# EDGAR Filing Document

**Accession Number:** 0001492074
**File Stem:** 0001193125-23-074408
**Filing Date:** 2023-3
**Character Count:** 797987
**Document Hash:** c559a90232c2a74403e3488f5c7422af
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-074408.hdr.sgml**: 20230320

**ACCESSION NUMBER**: 0001193125-23-074408

**CONFORMED SUBMISSION TYPE**: 20-F

**PUBLIC DOCUMENT COUNT**: 166

**CONFORMED PERIOD OF REPORT**: 20221231

**FILED AS OF DATE**: 20230320

**DATE AS OF CHANGE**: 20230320

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Abcam plc
- **CENTRAL INDEX KEY:** 0001492074
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **IRS NUMBER:** 980487031
- **STATE OF INCORPORATION:** X0
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 20-F
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39633
- **FILM NUMBER:** 23744920

**BUSINESS ADDRESS:**
- **STREET 1:** DISCOVERY DRIVE
- **STREET 2:** CAMBRIDGE BIOMEDICAL CAMPUS
- **CITY:** CAMBRIDGE
- **STATE:** X0
- **ZIP:** CB2 0AX
- **BUSINESS PHONE:** 44(0)1223696000

**MAIL ADDRESS:**
- **STREET 1:** DISCOVERY DRIVE
- **STREET 2:** CAMBRIDGE BIOMEDICAL CAMPUS
- **CITY:** CAMBRIDGE
- **STATE:** X0
- **ZIP:** CB2 0AX

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Abcam PLC
- **DATE OF NAME CHANGE:** 20100514

?xml version="1.0" encoding="utf-8" ? 20-F

##### [**Table of Contents**](#toc)
UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 20-F

(Mark One)

☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the year ended December 31, 2022

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

OR

☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of event requiring this shell company report<u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</u>

Commission file number 001-39633

## Abcam plc
(Exact name of Registrant as specified in its charter)

Not Applicable

(Translation of Registrant's name into English)

United Kingdom

(Jurisdiction of incorporation or organization)

Discovery Drive

Cambridge Biomedical Campus

Cambridge, CB2 0AX

United Kingdom

(Address of principal executive offices)

Alan Hirzel

Chief Executive Officer

Telephone: +44 (0) 1223 696000

Discovery Drive

Cambridge Biomedical Campus

Cambridge, CB2 0AX

United Kingdom

(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered, pursuant to Section 12(b) of the Act

---

| | |
|:---|:---|
| Title of each class | Name of each exchange on which registered |
| Ordinary shares, nominal value £0.002 per share\* ABCM | The Nasdaq Global Select Market |

---

\* The ordinary shares are represented by American Depositary Shares, which are exempt from registration under Section 12(b) of the Securities Exchange Act of 1934, as amended, pursuant to Rule 12a-8 thereunder.

Securities registered or to be registered pursuant to Section 12(g) of the Act: None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None

Indicate the number of outstanding shares of each of the issuer's classes of capital stock or common stock as of the close of the period covered by the annual report: 229,309,701 ordinary shares, nominal value of £0.002 per share.

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☒&nbsp;&nbsp;&nbsp;&nbsp;No ☐

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. Yes ☐&nbsp;&nbsp;&nbsp;&nbsp;No ☒

Note—Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 from their obligations under those Sections.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒&nbsp;&nbsp;&nbsp;&nbsp;No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒&nbsp;&nbsp;&nbsp;&nbsp;No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

☒ Large accelerated filer ☐ Accelerated filer ☐ Non-accelerated filer ☐ Emerging growth company

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act. ☐

† The term "new or revised financial accounting standard" refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

☐ U.S. GAAP ☒ International Financial Reporting Standards as issuedby the International Accounting Standards Board ☐ Other

If "Other" has been checked in response to the previous question indicate by check mark which financial statement item the registrant has elected to follow. Item 17 ☐ Item 18 ☐

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐&nbsp;&nbsp;&nbsp;&nbsp;No ☒

Auditor Firm Id: 876 Auditor Name: PricewaterhouseCoopers LLP Auditor Location: Cambridge, United Kingdom

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#### &nbsp;&nbsp;&nbsp;&nbsp;

---

| | |
|:---|:---|
|  [GENERAL INFORMATION](#tx433862_1) | 1 |
|  [PRESENTATION OF FINANCIAL AND OTHER INFORMATION](#tx433862_2) | 1 |
|  [MARKET AND INDUSTRY DATA](#tx433862_3) | 1 |
|  [TRADEMARKS, SERVICE MARKS AND TRADE NAMES](#tx433862_4) | 2 |
|  [CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS](#tx433862_5) | 2 |
|  [RISK FACTOR SUMMARY](#tx433862_6) | 2 |
|  [PART I](#tx433862_7) | 4 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 1. Identity of Directors, Senior Management and Advisers](#tx433862_8) | 4 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 2. Offer Statistics and Expected Timetable](#tx433862_9) | 4 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 3. Key Information](#tx433862_10) | 4 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[A. Reserved](#tx433862_11) | 4 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[B. Capitalization and Indebtedness](#tx433862_12) | 4 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[C. Reasons for the Offer and Use of Proceeds](#tx433862_13) | 4 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[D. Risk Factors](#tx433862_14) | 4 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 4. Information on the Company](#tx433862_15) | 42 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[A. History and Development of the Company](#tx433862_16) | 42 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[B. Business Overview](#tx433862_17) | 42 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[C. Organizational Structure](#tx433862_18) | 54 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[D. Property, Plant and Equipment](#tx433862_19) | 55 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 4A. Unresolved Staff Comments](#tx433862_20) | 55 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 5. Operating and Financial Review and Prospects](#tx433862_21) | 55 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[A. Operating Results](#tx433862_22) | 60 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[B. Liquidity and Capital Resources](#tx433862_23) | 66 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[C. Research and Development, Patents and Licenses, etc.](#tx433862_24) | 74 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[D. Trend Information](#tx433862_25) | 74 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 6. Directors, Senior Management and Employees](#tx433862_26) | 74 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[A. Directors and Senior Management](#tx433862_27) | 74 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[B. Compensation](#tx433862_28) | 76 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[C. Board Practices](#tx433862_29) | 86 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[D. Employees](#tx433862_30) | 88 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[E. Share Ownership](#tx433862_31) | 89 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[F. Disclosure of a Registrant's Action to Recover Erroneously Awarded Compensation](#tx433862_32) | 89 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 7. Major Shareholders and Related Party Transactions](#tx433862_33) | 89 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[A. Major Shareholders](#tx433862_34) | 89 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[B. Related Party Transactions](#tx433862_35) | 91 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[C. Interests of Experts and Counsel](#tx433862_36) | 92 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 8. Financial Information](#tx433862_37) | 92 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[A. Consolidated Statements and Other Financial Information](#tx433862_38) | 92 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[B. Significant Changes](#tx433862_39) | 92 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 9. The Offer and Listing](#tx433862_40) | 92 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[A. Offer and Listing Details](#tx433862_41) | 92 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[B. Plan of Distribution](#tx433862_42) | 92 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[C. Markets](#tx433862_43) | 92 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[D. Selling Shareholders](#tx433862_44) | 93 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[E. Dilution](#tx433862_45) | 93 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[F. Expenses of the Issue](#tx433862_46) | 93 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 10. Additional Information](#tx433862_47) | 93 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[A. Share Capital](#tx433862_48) | 93 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[B. Memorandum and Articles of Association](#tx433862_49) | 93 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[C. Material Contracts](#tx433862_50) | 93 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[D. Exchange Controls](#tx433862_51) | 93 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[E. Taxation](#tx433862_52) | 93 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[F. Dividends and Paying Agents](#tx433862_53) | 100 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[G. Statement by Experts](#tx433862_54) | 100 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[H. Documents on Display](#tx433862_55) | 100 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[I. Subsidiary Information](#tx433862_56) | 101 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[J. Annual Report to Security Holders](#tx433862_57) | 101 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 11. Quantitative and Qualitative Disclosures About Market Risk](#tx433862_58) | 101 |

---

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 12. Description of Securities Other than Equity Securities](#tx433862_59) | 102 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[A. Debt Securities](#tx433862_60) | 102 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[B. Warrants and Rights](#tx433862_61) | 102 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[C. Other Securities](#tx433862_62) | 102 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[D. American Depositary Shares](#tx433862_63) | 102 |
|  [PART II](#tx433862_64) | 105 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 13. Defaults, Dividend Arrearages and Delinquencies](#tx433862_65) | 105 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 14. Material Modifications to the Rights of Security Holders and Use of Proceeds](#tx433862_66) | 105 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 15. Controls and Procedures](#tx433862_67) | 105 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16. \[Reserved\]](#tx433862_68) | 108 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16A. Audit Committee Financial Expert](#tx433862_69) | 108 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16B. Code of Ethics](#tx433862_70) | 108 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16C. Principal Accountant Fees and Services](#tx433862_71) | 108 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16D. Exemptions from the Listing Standards for Audit Committees](#tx433862_72) | 109 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16E. Purchases of Equity Securities by the Issuer and Affiliated Purchasers](#tx433862_73) | 109 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16F. Change in Registrant's Certifying Accountant](#tx433862_74) | 109 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16G. Corporate Governance](#tx433862_75) | 109 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16H. Mine Safety Disclosure](#tx433862_76) | 110 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 16I. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections](#tx433862_77) | 110 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 17. Financial Statements](#tx433862_78) | 110 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 18. Financial Statements](#tx433862_79) | 110 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [Item 19. Exhibits](#tx433862_80) | 110 |
|  [SIGNATURES](#tx433862_81) | 113 |

---

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#### GENERAL INFORMATION
Except where the context otherwise requires or where otherwise indicated, all references in this Annual Report on Form 20-F (the "Annual Report") to the terms "Abcam," the "Company," the "Group," "we," "us," "our company" and "our business" refer to Abcam plc, together with its consolidated subsidiaries as a consolidated entity.

#### PRESENTATION OF FINANCIAL AND OTHER INFORMATION
Our audited consolidated financial statements have been prepared in accordance with International Financial Reporting Standards ("IFRS"), as issued by the International Accounting Standards Board ("IASB"). None of our financial statements were prepared in accordance with U.S. GAAP. Our financial information is presented in pounds sterling. For the convenience of the reader, in this Annual Report, unless otherwise indicated, translations from pounds sterling into U.S. dollars were made at the rate of £1.00 to $1.21, which was the noon buying rate of the Federal Reserve Bank of New York on December 30, 2022. Such U.S. dollar amounts are not necessarily indicative of the amounts of U.S. dollars that could have actually been purchased upon exchange of pounds sterling at the dates indicated. All references in this Annual Report to "$" mean U.S. dollars and all references to "£" and "GBP" mean pounds sterling.

Certain monetary amounts, percentages, and other figures included in this Annual Report have been subject to rounding adjustments. Accordingly, figures shown as totals in certain tables may not be the arithmetic aggregation of the figures that precede them, and figures expressed as percentages in the text may not total 100% or, as applicable, when aggregated may not be the arithmetic aggregation of the percentages that precede them.

#### MARKET AND INDUSTRY DATA
Within this Annual Report, we reference information and statistics regarding the industries in which we operate, including the life science industry. We are responsible for these statements included in this Annual Report. We have obtained industry, market and competitive position data from our own internal estimates, surveys and research as well as from publicly available information, industry and general publications and research, surveys and studies conducted by third parties, such as reports by CiteAb, a compiler and provider of citation data to the life science industry that uses its proprietary text mining technology and extensive human validation to search millions of scientific publications, EvaluatePharma, Pharmaprojects, Centers for Medicare and Medicaid Services and Pivotal Scientific.

Our estimates of our addressable market include several key assumptions based on our industry knowledge, industry publications, and third-party research, as well as other surveys. Moreover, these estimates of our addressable market are based on analyzing five specific markets, their current market size value<u>,</u> and their estimated growth rates. These markets include: (1) Immunohistochemistry (a type of tissue diagnostic), (2) Tissue Diagnostic, (3) Diagnostic Specialty Antibody Market, (4) Research Antibodies and (5) Therapeutic Antibodies. The information and data we have relied on in determining our estimates are obtained from: (i) MarketsandMarkets; (ii) Grand View Research; (iii) Market Data Forecast; (iv) Market Study Report; (v) Future Market Insight; (vi) Transparency Market Research; (vii) Mordor Intelligence; (viii) Nova One Advisor; (ix) Research and Markets; (x) Biospace; and (xi) Polaris Market Research. While we believe that our internal assumptions are reasonable, the sources we have relied on may be based on a small sample size and may fail to accurately reflect market opportunities. Moreover, no independent source has verified such assumptions, and we did not commission any of the market and industry data presented in this Annual Report. Industry publications, research, surveys, studies<u>,</u> and forecasts generally state that the information they contain has been obtained from sources believed to be reliable but that the accuracy and completeness of such information is not guaranteed.

Forecasts and other forward-looking information obtained from these sources are subject to the same qualifications and uncertainties as the other forward-looking statements in this Annual Report. We cannot guarantee the accuracy or completeness of any such information contained in this Annual Report. Forecasts and other forward-looking information are subject to uncertainty and risk due to a variety of important factors, including those described in this Annual Report. See Item 3.D. "Risk Factors*.*" These and other factors could cause results to differ materially from those expressed in the forecasts or estimates from independent third parties and us.

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#### TRADEMARKS, SERVICE MARKS AND TRADE NAMES
We have proprietary rights to trademarks used in this Annual Report that are important to our business, many of which are registered under applicable intellectual property laws. Solely for convenience, trademarks and trade names referred to in this Annual Report may appear without the "®"or "™" symbols, but such references are not intended to indicate, in any way, that we will not assert, to the fullest extent possible under applicable law, our rights or the rights of the applicable licensor to these trademarks and trade names. We do not intend our use or display of other companies' trademarks, trade names or service marks to imply a relationship with, or endorsement or sponsorship of us by, any other companies. Each trademark, trade name or service mark of any other company appearing in this Annual Report is the property of its respective holder.

#### CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS
This Annual Report contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. We intend such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in Section 27A of the Securities Act of 1933, as amended (the "Securities Act") and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). These forward-looking statements are contained principally in Item 3.D. "Risk Factors," Item 4. "Information on the Company" and Item 5. "Operating and Financial Review and Prospects." In some cases, you can identify forward-looking statements by the following words: "may," "might," "will," "could," "would," "should," "expect," "plan," "anticipate," "intend," "seek," "believe," "estimate," "predict," "potential," "continue," "contemplate," "possible" or the negative of these terms or other comparable terminology, although not all forward-looking statements contain these words. Forward-looking statements contained in this Annual Report include, but are not limited to, statements regarding our future results of operations and financial position, growth strategy and plans and objectives of management for future operations.

Our estimates and forward-looking statements are mainly based on our current expectations and estimates of future events and trends which affect or may affect our business, operations, and industry. Although we believe that these estimates and forward-looking statements are based upon reasonable assumptions, they are subject to numerous risks and uncertainties.

Many important factors could adversely impact our business and financial performance, including but not limited to those discussed under the caption "Risk Factor Summary" below and in Item 3.D. "Risk Factors" of this Annual Report. Moreover, we operate in an evolving environment. New risks and uncertainties emerge from time to time, and it is not possible for our management to predict all risks and uncertainties, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from estimates or forward-looking statements. We qualify all of our estimates and forward-looking statements by these cautionary statements.

The estimates and forward-looking statements contained in this Annual Report speak only as of the date of this Annual Report. Except as required by applicable law, we undertake no obligation to publicly update or revise any estimates or forward-looking statements whether as a result of new information, future events or otherwise, or to reflect the occurrence of unanticipated events.

#### RISK FACTOR SUMMARY
Our business is subject to numerous risks and uncertainties, including those described in Item 3.D. "Risk Factors" of this Annual Report. You should carefully consider these risks and uncertainties when investing in our ADSs. Principal risks and uncertainties affecting our business include the following:

• challenges in implementing our strategies for revenue growth in light of competitive challenges;

• the development of new products or the enhancement of existing products, and the need to adapt to significant technological changes or respond to the introduction of new products by competitors to remain competitive;

• our customers discontinuing or spending less on research, development, production or other scientific endeavors;

• failing to successfully identify or integrate acquired businesses or assets into our operations or fully recognize the anticipated benefits of businesses or assets that we acquire;

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• the ongoing COVID-19 pandemic, including variants, continues to affect our business, including impacts on our operations and supply chains;

• failing to successfully use, access and maintain information systems and implement new systems to handle our changing needs;

• cyber security risks and any failure to maintain the confidentiality, integrity and availability of our computer hardware, software and internet applications and related tools and functions;

• failing to successfully manage our current and potential future growth;

• any significant interruptions in our operations;

• our products fail to satisfy applicable quality criteria, specifications and performance standards;

• failing to maintain and enhance our brand and reputation;

• ability to react to unfavorable geopolitical or economic changes that affect life science funding;

• failing to deliver on transformational growth projects;

• our dependence upon management and highly skilled employees and our ability to attract and retain these highly skilled employees; and

• as a foreign private issuer, we are exempt from a number of rules under the U.S. securities laws and Nasdaq corporate governance rules and are permitted to file less information with the SEC than U.S. companies, which may limit the information available to holders of our American Depositary Shares ("ADS").

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#### PART I

#### Item 1. Identity of Directors, Senior Management and Advisers
Not applicable.

#### Item 2. Offer Statistics and Expected Timetable
Not applicable.

#### Item 3. Key Information
A. [Reserved]

B. Capitalization and Indebtedness

Not applicable.

C. Reasons for the Offer and Use of Proceeds

Not applicable.

D. Risk Factors

*An investment in our ADSs involves a high degree of risk. You should carefully consider the risks and uncertainties described below, together with all of the other information in this Annual Report, before deciding to invest in our ADSs. Additional risks not presently known to us or that we currently deem immaterial may also impair our business operations. Our business, financial condition or results of operations could be materially and adversely affected by any of these risks. This Annual Report also contains forward- looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in these forward-looking statements as a result of certain factors, including the risks and uncertainties faced by us described below and elsewhere in this Annual Report.* 

#### Risks Relating to Our Business and Industry

#### We may face challenges in implementing our strategies for revenue growth in light of competitive challenges.
We face significant competition from a diverse and fragmented base of competitors, many of whom focus on specific regions, customers and/or specific product segments. Competitors range from smaller, specialized companies (who may be able to respond more quickly to customers' specific needs), to large multinational companies (who provide a full suite of products to research labs, which may have greater financial, marketing, operational and research and development resources than we do). Such greater resources may allow our competitors to respond more effectively with new, alternative, or emerging technologies. In addition, consolidation trends in the pharmaceutical, biotechnology and diagnostics industries have created concentrated purchasing decisions for some customers, resulting in increased pricing pressure on us. Moreover, customers may believe that consolidated businesses are better able to compete as sole-source vendors and therefore, prefer to purchase from such businesses. New procurement channels, such as e-procurement and aggregators, may prove more attractive to customers through better delivery of products or blocking other channels where we have strength, and a failure by us to sufficiently engage and participate in these channels may lead to a loss of customer relationships. Failure to anticipate and respond to our competitors' actions may impact our future sales and earnings, in particular failure to react to competitors strengthening their brand, marketing or customer experience may negatively impact our ability to attract and retain customers.

We are pursuing a number of strategies to maintain and improve our revenue growth, including:

• increase usage of our research use only ("RUO") antibodies and grow sales over time;

• grow our product portfolio and expand within adjacent markets;

• expand our product offering for diagnostic and biopharmaceutical companies;

• enhance our digital platform and online presence;

• strengthen our teams, systems, and infrastructure to support our growth; and

• selectively pursue strategic acquisitions.

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We may not be able to successfully implement these strategies, and these strategies may not result in the expected growth of our business. Failure to anticipate and respond to our competitors' actions may adversely affect our business, financial condition, and results of operations.

***We must develop new products and enhance existing products, adapt to significant technological and innovative changes, and respond to introductions of new products by competitors to remain competitive.***

We sell our products in industries that are characterized by significant technological changes, frequent new product and technology introductions and enhancements and evolving industry standards. As a result, our customers' needs continue to evolve. If we do not appropriately innovate and invest in new products or technologies, our product offerings may become less desirable in the markets we serve, and our customers could move to new technologies offered by our competitors or even choose to make products themselves. Though we believe customers in our markets display a significant amount of loyalty to a particular product, we also believe that because of the initial time investment required by many of our customers to reach a purchasing decision for a new product, it may be difficult to regain that customer once the customer purchases a product from a competitor. In order to maintain positive relationships with and maintain the trust of our customers, it is crucial that we are able to continue to innovate and create new products that directly support our customers' research goals in a cost effective, timely and efficient manner. If our competitors are able react more directly and effectively to a customer's specific demand, this could harm our ability to retain our customers, even if we manufacture a product that is responsive to their needs.

There is also a risk that we may invest significant amounts of time and resources into a new product or product enhancement that fails to meet our high-quality standards or does not perform in the way that was intended, which could adversely affect our business. Without the timely introduction of new products, services, and enhancements to existing products or adequately meeting the changing demands of the industry, our offerings will likely become less competitive over time, in which case our competitive position, sales and operating results could suffer. Further, if a competitor were able to create a product or service that either eliminated or reduced the need for RUO antibodies and the related tools and solutions, or if there were an innovative development in the industry that made the use of antibodies no longer necessary for life science research, this could have a material adverse effect on our business and results of operations. Accordingly, we focus significant efforts and resources on the research, development and identification of new products and services that are attractive to our customers and gain acceptance in the markets we serve to further broaden our offerings. It can take significant time to identify an unmet customer need and develop a product to meet that need, and to the extent we fail to adequately anticipate or meet our customers' needs or fail to obtain desired levels of market acceptance, our business, financial condition, or results of operations could be adversely affected.

Our estimates of our addressable market include several key assumptions based on our industry knowledge, industry publications, third-party research, and other surveys, which may be based on a small sample size and may fail to accurately reflect market opportunities. While we believe that our internal assumptions are reasonable, no independent source has verified such assumptions. Industry publications, research, surveys, studies, and forecasts generally state that the information they contain has been obtained from sources believed to be reliable but that the accuracy and completeness of such information is not guaranteed. If any of our assumptions or estimates, or these publications, research, surveys, or studies prove to be inaccurate, then the actual market for our products may be smaller than we expect, and as a result, our product revenue may be limited and our business, financial condition or results of operations could be adversely affected.

#### Our business may be harmed if our customers discontinue or spend less on research, development, production, or other scientific endeavors.
A majority of our revenue is derived from consumers who are publicly funded through research grants. We have three primary categories of customers including: academic institutions, research institutions and pharmaceutical, biotechnology and diagnostic companies. Many factors, including public policy spending priorities, available resources and product and economic cycles, have a significant effect on the capital spending policies of these entities. For example, the United Kingdom's ("U.K.") withdrawal from the European Union ("E.U.") has caused, and may continue to cause, uncertainty in the European markets regarding the availability of public funding for research, which has had an indirect, but not significant, impact on our U.K. business. Furthermore, the potential U.S. statutory debt limit crisis could create uncertainty in the U.S. markets regarding availability of government grants and other public funding of scientific research. Fluctuations in the research and development budgets of our customers could have a significant effect on the demand for our products. Our

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customers determine their research and development budgets based on several factors, including the need to develop new products, continued availability of governmental and other funding, competition, and the general availability of resources. If research and development budgets are reduced, or if any funding source were to influence customer selection toward another supplier, the impact could adversely affect our business, financial condition, and results of operations.

***We may not successfully identify or integrate acquired businesses or assets into our operations or be able to fully recognize the anticipated benefits of businesses or assets that we acquire.***

A key element of our business strategy is to complement our organic growth with acquisitions. We routinely explore acquiring other businesses and assets, and we have completed six acquisitions in the last four years, including: BioVision, Inc. ("BioVision") in October 2021, Marker Gene Technologies, Inc. in March 2020, the gene editing platform and oncology product portfolio of Applied StemCell, Inc. in January 2020, the proteomics and immunology businesses from Expedeon AG in January 2020, the entire live cell line and lysates portfolio of EdiGene Inc. in July 2019, and Calico Biolabs Inc. in January 2019. In addition, we have acquired minority interests in SomaServe Limited and BrickBio Inc.

However, we may be unable to identify or complete promising acquisitions for many reasons, including any misjudgment of the key elements of an acquisition, competition among buyers, the high valuations of businesses in our industry, the need for regulatory and other approvals or certifications, lack of internal resources to actively pursue all attractive opportunities and availability of capital. When we do identify and complete acquisitions, we may face financial, managerial and operational challenges, including diversion of management attention and resources needed for existing operations, difficulty with integrating acquired businesses, acquiring business that are not consistent with our long-term strategies, integration of different corporate cultures, increased expenses, potential dilution of our brand, assumption of unknown liabilities, indemnities, potential disputes with the sellers and the need to evaluate the financial systems of and establish internal controls for acquired entities. Further, we seek out acquisitions of companies that maintain the same high quality standards that we maintain, and if we misjudge or overestimate a company's product quality standards, we may not be able to use these products or implement the strategies that were the primary reason for the acquisition, which would lead to a significant loss both financially and in time spent by our teams trying to integrate the product or implement the strategy. There can be no assurance that we will engage in any additional acquisitions or that we will be able to do so on terms that will result in any expected benefits.

In addition, our ability to realize the benefits we anticipate from our acquisition activities, including any anticipated sales growth, cost synergies and other anticipated benefits, will depend in large part upon whether we are able to integrate such businesses efficiently and effectively. Integration is an ongoing process, and we may not be able to fully integrate such businesses smoothly or successfully, and the process may take longer than expected. Further, the integration of certain operations and the differences in operational culture following such activity will continue to require the dedication of significant management resources, which may distract management's attention from day-to-day business operations. There may also be unasserted claims or assessments that we failed or were unable to discover or identify in the course of performing due diligence investigations of target businesses. If we are unable to successfully integrate the operations of acquired businesses into our business, we may be unable to realize the sales growth, cost synergies and other anticipated benefits of such transactions, and our business, results of operations and cash flow could be adversely affected.

***A regional or global health pandemic, including COVID-19 and its variants which have adversely affected elements of our business, and could severely affect our business, operating results and financial condition due to impacts on our operations and supply chains, as well as actions taken to contain the disease or treat its impact, and the speed and extent of the recovery.***

We engage in business globally, which subjects us to a number of unpredictable or unexpected risks and factors outside our control, including risks associated with public health crises such as epidemics and pandemics, including COVID-19 and its variants which have adversely affected global economies, financial markets and the overall environment in which we do business, and the extent to which it may impact our future results of operations and overall financial performance remains uncertain.

The COVID-19 pandemic has adversely affected, and may continue to adversely affect, elements of our business (including elements of our operations, supply chains and distribution systems) as a result of impacts associated with preventive and precautionary measures that we, other businesses, our communities and governments have taken and are taking. Throughout the COVID-19 pandemic, many employers in our primary

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locations of business, including the United States, United Kingdom, and China, temporarily closed sites and required their employees to work from home if they were able to do so. Further, as the research community began to focus on COVID-19, other types of research were put on hold, which resulted in many of our customers' research labs being forced to temporarily shut down or to operate at reduced capacity. These site closures included some of our customers' labs, which have caused and may continue to cause customers to delay or forego purchases of our products. While many of our customers' labs have reopened, such labs may be required to continue to operate at reduced capacity, and there can be no assurance that our customers will not be subject to further shutdowns or reductions in capacity in the future, which could have a material adverse effect on our business and results of operations. As a substantial majority of our catalogue revenue is purchased for research use only, these shutdowns and reductions in capacity have negatively impacted the global demand for our products, which resulted in slower than expected revenue growth. As the impact of the COVID-19 pandemic remains uncertain, we may continue to experience slower than normal sales activity.

In an effort to halt the outbreak of COVID-19, many countries throughout the world, including China, placed significant restrictions on travel, including business travel, closed their borders, imposed prolonged quarantines, and many jurisdictions, such as China, may continue to close borders, impose prolonged quarantines and further restrict travel and business activity, which has impacted and could significantly impact our ability to support our operations and customers, the ability of our employees to get to their workplaces to produce products and provide services, and the availability of materials for production of our products, as well as significantly hinder or increase the costs associated with our products from moving through the supply chain. Despite the roll out of vaccines in many of our countries in which we operate, due to uncertainties to be dictated by the length of time that the COVID-19 pandemic and related disruptions continue, there can be no assurance that our operations will not continue to be adversely impacted.

The duration and extent of the impact from the COVID-19 pandemic depends on future developments that cannot be accurately predicted at this time, such as continued vaccine and booster rollouts, impact of vaccine hesitancy, the severity and transmission rate of the virus and variants, and the extent and effectiveness of containment actions and the impact of these and other factors on our employees, customers, suppliers, and partners. Such impact on our business, cash flows and/or financial condition, and results of operations could be material.

To the extent the COVID-19 pandemic and associated preventive and precautionary measures adversely affects our business and financial results, it may also have the effect of heightening many of the other risks described in this "Risk Factors" section.

***Our business depends on our ability to use and access information systems as well as our public websites, and any failure to successfully maintain these systems or public websites or implement new systems or new public websites to handle our changing needs could materially harm our operations.***

We depend on standardized procedures and multiple information systems, including our online platform and distribution and Oracle Cloud ERP systems, for our operations, customer service and quality and safety procedures. Furthermore, we rely on information technology systems to process, transmit, store, and protect electronic information, including confidential customer, supplier, employee, or other business information. Through our online platform, we collect and store confidential information that customers provide in order to, among other things, purchase products and services and register on our website.

We are currently updating our systems and processes by implementing Oracle Cloud ERP and other software solutions to replace our legacy IT systems, such as Adminsite (an in house developed inventory system tracking sales order processing and finished goods), on a scale reflecting the increased size, scope and complexity of our operations. The process of migrating away from our legacy systems has disrupted and could continue to disrupt our ability to timely and accurately process information. In addition, we are also updating our public websites. Any significant delay, failure, increase in costs of these projects, any issues in transitioning from our legacy systems to new information systems (which have had and could continue to have a negative impact on our ability to upgrade our information systems) or any issues in transitioning from our current public websites to our new public websites, including those that are customer facing, may consequently adversely affect our business, financial condition, and results of operations, see Item 15. "Controls and Procedures".

We also utilize other commercially available third-party technology solutions, software, and software systems with some proprietary configurations. We also store data using third-party cloud services. Our information systems and our public websites are subject to damage or interruption from power outages, computer and telecommunications failures, computer viruses, security breaches, vandalism, catastrophic events, natural

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disasters, terrorist attacks, hackers, and other security issues as well as human error. Given the age and lack of support of some of our legacy systems, these risks may be greater. If our new or legacy information systems or our new or our current public websites are damaged, fail to work properly or otherwise become unavailable, we may incur substantial costs to repair or replace them, including inflation-related costs, and we may experience a loss of critical information, customer disruption and interruptions or delays in our ability to perform essential functions and implement new and innovative services. If the cloud service providers we use were to experience unplanned downtime, delays or other issues delivering data to our information technology systems or our public websites, including due to increased usage as a result of COVID-19 pandemic, it could significantly and adversely impact business operations. A compromise of our information systems or those with which we interact could harm our reputation and expose us to regulatory actions and claims from customers and other persons, any of which could adversely affect our business, financial condition, and results of operations.

In addition, we may not have the necessary resources to enhance existing information systems or implement new systems where necessary to handle our increasing volume and/or our changing needs, and as a result we may continue to experience unanticipated delays, complications, and expenses in implementing and integrating our systems. Any interruptions in operations would adversely affect our ability to properly allocate resources and timely deliver our products, which could result in customer dissatisfaction. For example, we implemented a new Oracle Cloud ERP system sales and distribution module, which in the second half of the year ended December 31, 2022 (predominately September and October) interrupted operations and resulted in delays in our ability to ship finished products and collect revenue, and there can be no assurance that we will not encounter such problems in the future. For more information, see Item 5. "Operating and Financial Review and Prospects—Results of Operations" Furthermore, as we currently still rely on certain legacy systems that are no longer supported by the manufacturers, with only a small number of current employees able to maintain these systems. Any failure of these systems could have a significant business impact. The failure to successfully implement and maintain information systems have had and could continue to have an adverse effect on our ability to obtain new business, retain existing business and maintain or increase our sales and profit margins, any of which could adversely affect our business, financial condition and results of operations.

***Cyber security risks and the failure to maintain the confidentiality, integrity and availability of our computer hardware, software and internet applications and related tools and functions, could result in damage to our reputation, data integrity and/or subject us to costs, fines or lawsuits under data privacy or other laws or contractual requirements.***

The integrity and protection of our own data, and that of our customers and employees, is critical to our business. The regulatory environment governing information, security and privacy laws is increasingly demanding and continues to evolve. Implementing and maintaining compliance with applicable security and privacy regulations may increase our operating costs and/or adversely impact our ability to market our products and services to customers. Although our computer and communications hardware are protected through physical and software safeguards, they are still vulnerable to fire, storm, flood, power loss, earthquakes, telecommunications failures, physical or software break-ins, software viruses, and similar events. Furthermore, the increase in remote working may also result in additional consumer privacy, IT security, and fraud-related risks. These events could lead to the unauthorized access, disclosure, and use of non-public information.

We could be subject to risks caused by misappropriation, misuse, leakage, falsification, system malfunction or intentional or accidental release or provision of access to or loss of information maintained in our information systems and networks and those of our third-party suppliers. The contractors, consultants, business partners, and/or other third parties that we work with may not maintain the same high-quality physical and software safeguards and information and technology systems and controls to prevent cyber security threats that we maintain. Further, these third parties may be vulnerable to breakdown, intrusions, or other damage or interruption from service interruptions, system malfunctions, natural disasters, terrorism, cyberattack, and telecommunication and electrical failures, as well as security breaches from their own inadvertent or intentional actions. For example, in the year ended December 31, 2022, one of our contractors mistakenly posted the application programming interface ("API") credentials of some of Abcam's commercial production and business environments in a public workspace. As a result, there was the potential for an unauthorized third party with knowledge of how to use such API credentials to gain access to sensitive information. While we reported the incident and notified those that could have been affected, we have no evidence to suggest that our systems or any such information was accessed by any unauthorized third party, but we cannot guarantee that such incidents will not have an impact in the future. Furthermore, any companies we acquire may not maintain the same high-quality physical and software safeguards and information and technology systems and controls to prevent cyber security threats that we maintain. There may also be pre-existing cybersecurity incidents or risks that we failed or were unable to

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discover or identify in the course of performing due diligence investigations of target businesses. In addition, the techniques used by criminal elements to attack computer systems are sophisticated, change frequently and may originate from less regulated and remote areas of the world. As a result, we may not be able to address these techniques proactively or implement adequate preventative measures. We are also reliant on the quality of our training of employees to allow them to spot and appropriately respond to cyber security threats.

We have been subject to a number of actual and attempted cyber-attacks such as through phishing scams and require employees to remain vigilant to ensure that such attempts are unsuccessful. Although none of these actual or attempted cyber-attacks has had a material adverse impact on our operations or financial condition, we cannot guarantee that any such incidents will not have such an impact in the future. If our computer systems are compromised, we could be subject to fines, damages, litigation and enforcement actions, customers could curtail or cease using its applications, and we could lose trade secrets, the occurrence of which could harm our business. If we are unable to maintain reliable information technology systems and appropriate controls with respect to global data privacy and security requirements and prevent data breaches, we may suffer regulatory consequences in addition to business consequences. As a global organization, we are subject to data privacy and security laws, regulations, and customer-imposed controls in numerous jurisdictions as a result of having access to and processing confidential, personal and/or sensitive data in the course of our business. There are numerous U.S. federal and state laws and regulations related to the privacy and security of personal information. In particular, regulations promulgated pursuant to the Health Insurance Portability and Accountability Act of 1996 ("HIPAA") establish privacy and security standards that limit the use and disclosure of individually identifiable health information (known as "protected health information") and require the implementation of administrative, physical and technological safeguards to protect the privacy of protected health information and ensure the confidentiality, integrity and availability of electronic protected health information. Determining whether protected health information has been handled in compliance with applicable privacy standards and our contractual obligations can require complex factual and statistical analyses and may be subject to changing interpretation. Although we take measures to protect sensitive data from unauthorized access, use or disclosure, our information technology and infrastructure may be vulnerable to attacks by hackers or viruses or breached due to employee error, malfeasance or other malicious or inadvertent disruptions. Any such breach or interruption could compromise our networks, and the information stored there could be accessed by unauthorized parties, manipulated, publicly disclosed, lost or stolen. Any such access, breach or other loss of information could result in legal claims or proceedings and liability under federal or state laws that protect the privacy of personal information, such as the HIPAA and the Health Information Technology for Economic and Clinical Health Act and may result in regulatory penalties. Notice of breaches must be made to affected individuals, the United States Department of Health and Human Services ("HHS"), and for extensive breaches, notice may need to be made to the media or state Attorneys General. Such a notice could harm our brand and reputation and adversely affect our ability to compete.

Additionally, the Gramm-Leach-Bliley Act of 1999 (along with its implementing regulations) (the "GLBA") restricts certain collection, processing, storage, use and disclosure by covered companies of certain personal information, requires notice to individuals of privacy practices and provides individuals with certain rights to prevent the use and disclosure of certain non-public or otherwise legally protected information. The GLBA also imposes requirements regarding the safeguarding and proper destruction of personal information through the issuance of data security standards or guidelines. In addition, many U.S. states in which we operate now or may operate in the future have laws that protect the privacy and security of sensitive and personal information. Certain U.S. state laws may be more stringent or broader in scope, or offer greater individual rights, with respect to sensitive and personal information than federal, international or other state laws, and such laws may differ from each other, which may complicate compliance efforts. For example, the California Consumer Privacy Act of 2018 (the "CCPA"), which went into effect on January 1, 2020, imposes stringent data privacy and security requirements and obligations with respect to the personal information of California residents and households. Among other things, it requires covered companies to provide new disclosures to California consumers and provide such consumers new data protection and privacy rights, including the ability to opt-out of certain sales of personal information. The CCPA provides for civil penalties for violations, as well as a private right of action for certain data breaches that result in the loss of personal information that may increase the likelihood of, and risks associated with, data breach litigation. It remains unclear how various provisions of the CCPA will be interpreted and enforced, and multiple states have enacted or are expected to enact similar laws. The effects of the CCPA and other similar state laws on our business are potentially significant and may require us to modify our data processing practices and policies and to incur costs and expenses in an effort to comply. State laws are changing rapidly, and there is discussion in U.S. Congress of a new federal data protection and privacy law to which we may be subject.

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In Europe, laws, regulations, and standards in many jurisdictions apply broadly to the collection, use, retention, security, disclosure, transfer and other processing of personal information. For example, in the European Economic Area (the "EEA"), the collection and use of personal data is governed by the provisions of the General Data Protection Regulation (the "GDPR"). The GDPR came into effect in May 2018, superseding the European Union Data Protection Directive and imposing more stringent data privacy and security requirements on companies in relation to the processing of personal data of European Union ("EU") data subjects. The GDPR, together with national legislation, regulations and guidelines of EU member states govern the processing of personal data, impose strict obligations and restrictions on the ability to collect, use, retain, protect, disclose, transfer, and otherwise process personal data. In particular, the GDPR includes obligations and restrictions concerning the consent and rights of individuals to whom the personal data relates; providing detailed disclosures about how personal data is collected and processed (in a concise, intelligible and easily accessible form); demonstrating that an appropriate legal basis is in place or otherwise exists to justify data processing activities; granting rights for data subjects in regard to their personal data (including data access rights, the right to be "forgotten" and the right to data portability); introducing the obligation to notify data protection regulators or supervisory authorities (and in certain cases, affected individuals) of significant data breaches; imposing limitations on retention of personal data; maintaining a record of data processing; and complying with the principle of accountability and the obligation to demonstrate compliance through policies, procedures, training and audit.

Fines for certain violations of the GDPR are significant. e.g., up to 4.0% of a company's global annual revenue or €20 million, whichever is greater. Such fines are in addition to any civil litigation claims by customers and data subjects. European data protection authorities may interpret the GDPR and national laws differently and` impose additional requirements, which contributes to the complexity of processing personal data in or from the EEA. Guidance on implementation and compliance practices is often updated or otherwise revised. From January 1, 2021, we are subject to the GDPR and also the UK GDPR, which, together with the amended UK Data Protection Act 2018, retains the GDPR in UK national law. The UK GDPR mirrors the fines under the GDPR, e.g. fines up to the greater of €20.0 million / £17.5 million or 4.0% of global turnover.

We are also subject to EU and United Kingdom rules with respect to cross-border transfers of personal data out of the EEA and the United Kingdom, respectively. Recent legal developments in Europe have created complexity and uncertainty regarding transfers of personal data from the EEA and the United Kingdom to the United States. Most recently, on July 16, 2020, the Court of Justice of the European Union ("CJEU") invalidated the EU-US Privacy Shield Framework ("Privacy Shield") under which personal data could be transferred from the EEA to US entities who had self-certified under the Privacy Shield scheme.

While the CJEU upheld the adequacy of the standard contractual clauses (a standard form of contract approved by the European Commission as an adequate personal data transfer mechanism, and potential alternative to the Privacy Shield), it made clear that reliance on them alone may not necessarily be sufficient in all circumstances. Use of the standard contractual clauses must now be assessed on a case-by-case basis taking into account the legal regime applicable in the destination country, in particular applicable surveillance laws and rights of individuals and additional measures and/or contractual provisions may need to be put in place. The European Commission has published revised standard contractual clauses for data transfers from the EEA: the revised clauses have been mandatory for relevant transfers since September 27, 2021; existing standard contractual clauses arrangements must be migrated to the revised clauses by December 27, 2022. The United Kingdom's Information Commissioner's Office has published new data transfer standard contracts for transfers from the UK under the UK GDPR. This new documentation will be mandatory for relevant data transfers from September 21, 2022; existing standard contractual clauses arrangements must be migrated to the new documentation by March 21, 2024.

Several other countries, such as China and Russia, have also passed laws that require personal data relating to their citizens to be maintained on local servers and impose additional data transfer restrictions, which could increase the cost and complexity of delivering our products and services.

We are also reliant on certain manual processes for collecting and processing data, and any failures in these processes or failure to handle the data collected in accordance with relevant regulations could lead to enforcement actions. Complying with all applicable laws, regulations, standards, and obligations relating to data privacy, security and transfers may cause us to incur substantial operational costs or require us to modify our data processing practices and processes. Government enforcement actions can be costly and interrupt the regular operation of our business, and data breaches or violations of data privacy laws can result in significant fines, reputational damage, and civil lawsuits, any of which may adversely affect our business, financial condition and

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results of operations. We may not be able to respond quickly or effectively to regulatory, legislative, and other developments, and these changes may in turn impair our ability to commercialize our products or increase our cost of doing business. In addition, if our practices are not consistent or viewed as not consistent with legal and regulatory requirements, including changes in laws, regulations and standards or new interpretations or applications of existing laws, regulations, and standards, we may become subject to audits, inquiries, whistleblower complaints, adverse media coverage, investigations, loss of export privileges, severe criminal or civil sanctions or reputational damage. Any of the foregoing could have an adverse effect on our competitive position, business, financial condition, results of operations and prospects.

#### Our business may suffer if we do not successfully manage our current and potential future growth.
We have rapidly expanded our operations and anticipate expanding further as we pursue our growth strategies. Such expansion increases the complexity of our business and places a significant strain on our management, operations, technical systems, financial resources, and internal control over financial reporting functions. Our current and planned personnel, systems, procedures, and controls may not be adequate to support and effectively manage our future operations, especially as we employ personnel and maintain manufacturing facilities and distribution networks in several geographic locations. Across a range of business areas, we currently use systems and processes that are overly manual and reaching the limit of their scalability, and as we continue to grow and expand our business, these systems and processes will become outdated and will need to be replaced with more automated and up-to-date systems to maintain our growth. These systems and processes also interact with our inventory management and demand planning, and any failure in these systems or in the transition to updated systems, may make it more likely we do not adequately anticipate and plan for business growth, which has resulted in increased times for order fulfilment or order backlogs, and potentially may reduce customer satisfaction and reduced order conversion. In addition, given the rapid growth of our business on these overly manual systems, there may be certain contractual terms, including royalties, that are not properly monitored. We may not be able to manage our expansion effectively, and failure to update and replace these systems and processes may adversely affect our reputation, business, financial condition, and results of operations.

We are also continuously expanding our product portfolio and establishing and developing these new products requires significant management time and attention. If these products do not achieve the anticipated success or require greater levels of time and investment to reach the expected levels, it could adversely affect our business, financial condition, and results of operations. Failure to appropriately integrate new products and business lines into our existing operations and systems can also affect the success of these products, and failure to adequately anticipate and plan for this integration could affect the success of these products and may also negatively impact our existing product offerings.

#### Significant interruptions in our operations could materially harm our business, financial condition and results of operations.
Manufacturing, distribution, service, and logistics problems can and do arise, including in light of the COVID-19 pandemic, and any such problems could have a significant impact on our business, financial condition and results of operations. Accordingly, any significant disruptions to the operations of our manufacturing or distribution centers or logistics providers for any reason, including labor relations issues, power interruptions, severe weather, fire or other circumstances beyond our control could cause our operating expenses to increase without coverage or compensation or seriously harm our ability to fulfill our customers' orders or deliver products on a timely basis, or both. We must also maintain sufficient production capacity in order to meet anticipated customer demand, which carries fixed costs that we may not be able to offset if orders slow, which would adversely affect our operating margins. If we are unable to manufacture or source our products consistently, in sufficient quantities and on a timely basis, our sales, gross margins and our other operating results will be materially and adversely affected. Prompt shipment of our products is also very important to our business. We have experienced problems with or delays in our production, shipping and logistics capabilities, including as a result of the COVID-19 pandemic, and implementation of new systems across a range of business areas to replace processes that are overly manual and reaching the limit of their scalability as we continue to grow and expand our business that resulted in delays in our ability to ship finished products, and there can be no assurance that we will not encounter such problems in the future. If we experience significant delays in our manufacturing, shipping, or logistics processes, this could cause disruption to our customers and damage our current and future customer relationships and may adversely affect our business. Such delays may also adversely impact our new product development. For example, if we were to lose one of our sites where new product development is undertaken, we may not be able to transfer or replicate that product development at another site, with the result of

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a loss of the time and financial costs of development of the new product. We also use small quantities of high-risk chemicals in the manufacture of certain of our products, which are subject to handling risks, and any disruption in our ability to source or appropriately store these chemicals could adversely affect our manufacturing operations.

In addition, as we are reliant on biological processes to manufacture many of our products, any loss or interruption to the systems that allow us to maintain optimal growth or storage conditions for our materials or products could lead to a loss of significant sections of our product portfolio, which may adversely affect our business, financial condition and results of operations. If a biological contaminant, such as bacteria, mold, yeasts, viruses or mycoplasma, were to affect our materials or our products, or if our materials or products were cross contaminated, it could affect the quality of our products, our inventory levels and disrupt our manufacturing and distribution processes, as well as those of our customers. We have quality control procedures in place to detect and correct such disruptions, but there can be no assurance that these procedures will always function properly. Any disruption to our manufacturing operations would disrupt our ability to serve our customers, which could have a material adverse effect on our reputation, business, financial condition and results of operations. Similarly, any contamination of our customers' laboratories caused by our products could have a material adverse effect on our reputation, business, financial condition and results of operations.

***Our offerings are highly complex, and, if our products do not satisfy applicable quality criteria, specifications, and performance standards, we could experience lost sales, delayed or reduced market acceptance of our products, increased costs and damage to our reputation.***

The products we offer are highly exacting and complex due to their biological nature and demanding customer specifications. Providing high-quality products in terms of specificity, sensitivity, and consistency, together with extensive product validation data is a fundamental driver of customer loyalty and our reputation with life science researchers. Our operating results depend on our ability to execute and, when necessary, improve our global quality control systems, including our ability to effectively train and maintain our employees with respect to quality control. A failure of our global quality control systems could result in problems with facility operations or preparation or provision of defective or non-compliant products. In each case, such problems could arise for a variety of reasons, including equipment malfunction, failure to follow specific protocols and procedures, problems with critical materials and components, or environmental factors and damage to, or loss of, manufacturing operations. Such problems could affect production of a particular batch or series of batches of products, requiring the destruction of such products or a halt of facility production altogether.

Our success depends on our customers' confidence that we can provide reliable, consistently high-quality products, which includes our ability to provide validated data to support our customers' use of our products. Our reputation and the public image of our products and technologies may be impaired if our products fail to perform as expected or fail to meet our or our customers' applicable quality criteria, specifications, or performance standards. High-quality reagents, for example, are necessary for critical research progress; unreliable reagents may impede researchers' ability to reproduce experiments and can lead to wasted time and money. If our products experience, or are perceived to experience, a material defect or error, this could result in loss or delay of sales, damaged reputation, diversion of development resources and increased insurance or warranty costs, any of which could harm our business. These risks are amplified in respect of our new product lines as we implement appropriate quality control criteria. We are reliant to an extent on customer feedback on the quality of our products, and it may take additional time for new products to meet the desired quality. Such defects or errors could also result in our inability to timely deliver products to our customers, which could in turn cause disruptions to our customers' ability to obtain results, narrowing the scope of the use of our products and ultimately hindering our or their success in relevant markets. Even after any underlying concerns or problems are resolved, any lingering concerns in our target markets regarding our technology, product defects or performance standards could continue to result in lost sales, delayed market acceptance and damaged reputation, among other things. If problems in preparation or manufacture of a product, or failures to meet required quality standards for that product, or other product defects are not discovered before such product is released to our customers, we may be subject to adverse legal or regulatory actions, including halting of manufacture and distribution, restrictions on our operations, civil sanctions, including monetary sanctions, and criminal actions. In addition, such problems or failures subject us to other litigation claims, including claims from our customers for reimbursement for the cost of lost or damaged materials. Our customers also require specific information regarding our products and their uses, and any inaccuracies in this information could lead to products being sold for the wrong uses and may result in our having to refund or replace the products in question. Any of the above problems may adversely affect our reputation, business, financial condition, and results of operations.

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#### If we fail to maintain and enhance our brand and reputation, our business, results of operations and prospects may be materially and adversely affected.
We believe that maintaining and enhancing our brand and reputation are of significant importance to the success of our business. We work to set a very high standard for the quality of our products and our ethical business practices, and we believe that this has been crucial to our success. We have employed and will continue to employ different types of consumer experience and interaction touchpoints designed to gauge consumer satisfaction with our products, including our customer website, e-sales and digital marketing, and we also engage in rigorous product validation in order to continue to improve our product quality. We cannot guarantee, however, that these activities will be successful or that we will be able to continue to maintain our brand and reputation as we expect. For example, in the year ended December 31, 2022, we implemented a new branding approach: "progress happens together," which includes articles and podcasts that are dedicated to bringing scientists together by telling their stories, highlighting the importance of teamwork and collaboration among scientists, and other scientific customer experiences. We cannot guarantee that our new branding approach will be successful or that we will be able to continue to maintain our brand and reputation as we expect. If our brand strength deteriorates, or if our brand is no longer associated with high-quality products, it could lead to fewer publication citations for our products, which could in turn further weaken our brand recognition and reputation. Customers often choose the most-cited brand or product, and if another brand were to overtake ours in frequency of citations, our business could be adversely affected. In addition, our competitors may increase the intensity of their consumer interactions or customer feedback processes, which may force us to increase our advertising spend to engage with our customer base and maintain brand and reputational awareness. Our ability to attract and retain customers is also influenced by our prominence in search engines. Any changes to our prominence in search engines, whether as a result of revised algorithms, improved search engine optimization by our competitors or failure to respond to changes in online activity may negatively impact our brand and reputation or to convert customer interactions into sales.

In addition, any negative publicity relating to our products or services, regardless of its veracity, could harm our brand and the perception of our brand in the market. With an increasing global focus on ethical business practices and good corporate behavior, and with such issues directly influencing consumer behavior, any failure to achieve or maintain the levels of corporate governance, social and environmental impact and corporate behaviors expected of us, including demonstrating dedication to the benefits of diversity, could negatively impact our brand and reputation. If our brand is harmed, we may not be able to gain new customers or continue to maintain positive relationships with our customers, and our business, prospects, financial condition, and results of operations could be materially and adversely affected.

Part of our growth strategy is to increase direct customer interactions in multiple countries. Failure to anticipate and react to particular geographic requirements and sensitivities may have a negative impact on our brand and reputation, which may result in a decrease in sales or sales growth in such countries, which may adversely affect our business, prospects, financial condition and results of operations.

***The loss of a significant number of customers or a reduction in orders from a significant number of customers could reduce our sales and harm our operating results.***

Our operating results could be negatively affected by the loss of revenue from a significant number of our customers. Our sales are widely distributed, and many of our customers typically place smaller value orders in high volumes. We have other customers with whom we maintain close business relationships, working closely to build the specific custom tools they need, which will then become part of our product portfolio. These relationships often present larger commercial opportunities, and our operating results could be adversely affected by the loss of a significant number of these customers, particularly during the product development phase. For the year ended December 31, 2022, no single customer accounted for more than 3% of our revenue.

Though we often offer pricing and volume incentives, our customers are generally not obligated to purchase any fixed quantities of products, and they may stop placing orders with us at any time. If a significant number of customers purchase fewer of our products, defer orders, or fail to place additional orders with us for any reason, our sales could decline, and our operating results may not meet our expectations. In addition, if those customers order our products, but fail to pay on time or at all, our liquidity and operating results could be adversely affected.

Our contracts generally do not contain minimum purchase requirements, and the majority of our sales are on a purchase order basis. Therefore, our sales are subject to changes in demand from our customers. The level and

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timing of orders placed by our customers vary for a number of reasons, including individual customer strategies, the introduction of new technologies, the desire of our customers to reduce their exposure to any single supplier and general economic conditions. If we are unable to anticipate and respond to the demands of our customers, if we have an inadequate supply of products, insufficient capacity in our sites or if we experience any disruptions to our supply chain or distribution network, we may lose customers. Alternatively, we may have excess inventory or excess capacity, and either of these factors may have a material adverse effect on our business, financial condition, and results of operations.

Though we do generate a portion of our sales from long-term contracts, the majority of these contracts are non-exclusive and do not require a minimum purchase volume. This makes it difficult to estimate our customers' demand for our products and our critical material and component needs. In addition, though we believe customers in our markets display a significant amount of loyalty to a particular product, we may not be able to renew a contract on favorable pricing terms if our competitors reduce their prices in order to procure business, or if a customer insists that we lower the price charged under the contract being renewed in order to retain the contract. In addition, if we enter into a contract with a customer on unfavorable terms, it may harm our ability to negotiate our future contracts with that customer or with other customers. The loss of sales obtained through long-term contracts, or the reduced profitability of such sales could adversely affect our business, financial position and results of operations.

#### Our business, financial condition and results of operations depend upon the availability of critical materials and components.
Our operations depend upon our ability to obtain high-quality third-party products and materials meeting our specifications and other requirements at reasonable prices, including various components, storage and growth media and other materials. Our ability to maintain an adequate supply of such critical materials and components could be impacted by the availability and price of those materials and maintaining relationships with suppliers. While we may seek to minimize the impact of price increases and potential shortages by, among other things, entering into long-term supply agreements, increasing our own prices and implementing cost-saving measures, our earnings and cash flows could be adversely affected in the event these measures are insufficient to cover our costs. Moreover, while we aim to maintain a large network of product suppliers, we are unable to predict any interruption or disruption in service from our key suppliers, due to for example health epidemics, pandemics, and other outbreaks, including the COVID-19 pandemic. Any interruption or disruption in service from particular suppliers of components and materials means that interruptions or stoppages in such deliveries could adversely affect our operations until arrangements with alternate suppliers, to the extent any alternate suppliers acceptable to us and, if applicable, to our customers, even exist. If this occurs, we could expend substantial expense and time in re-establishing relationships with third-party suppliers that meet the appropriate quality, cost and regulatory requirements needed for commercially viable manufacture of our products or in re-designing our products to incorporate different components and materials that are available from third-party suppliers. If we are unable to obtain the materials we need at reasonable prices or at all, we may not be able to produce certain of our products at a marketable price or at all. If our supply of materials and components is adversely affected, including among other reasons, as a result of the COVID-19 pandemic, we could impact our customers' ability to conduct their research, damage our relationship with current and prospective customers and our operating results and financial condition could be adversely affected.

Moreover, we are dependent upon the ability of our suppliers to provide materials and components that meet our specifications, quality standards, other applicable criteria and delivery schedules. Our suppliers' failure to provide expected materials or components that meet such criteria could adversely affect production schedules and contract profitability. The continued supply of high-quality third-party products and materials from our suppliers is subject to a number of risks, including:

• the destruction of or damage to our suppliers' facilities or their distribution infrastructure;

• work stoppages or strikes by our suppliers' employees;

• the failure of our suppliers to provide materials of the requisite quality or in compliance with strict specifications;

• the failure of essential equipment at our suppliers' plants;

• the failure of our suppliers to satisfy import and export control laws for goods that we purchase from them;

• the failure of our suppliers to meet regulatory standards where applicable;

• the failure, shortage or delay in the delivery of materials to our suppliers;

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• contractual amendments and disputes with our suppliers; and

• inability of our suppliers to perform as a result of the weakened global economy, the COVID-19 pandemic or otherwise.

If we experience problems with suppliers, we may not be able to find acceptable alternatives, and any such alternatives could result in increased costs for us and possible forward losses on certain contracts. Even if acceptable alternatives are found, the process of locating and securing such alternatives might be disruptive to our business, might lead to termination of our supply agreements with our customers and might disrupt the operations of our customers leading to potential claims, any of which could adversely affect our business, financial condition, and results of operations.

#### We are subject to risks associated with global operations.
We engage in business globally, with 64% and 57% of our catalogue revenue for the years ended December 31, 2021 and 2022, respectively, coming from outside the United States. Global operations subject us to a number of risks, some of which have been and could continue to be exacerbated by the COVID-19 pandemic, as well as international economic, political and labor conditions; currency fluctuations; any unstable banking systems; tax laws (including U.S. taxes on foreign subsidiaries); increased financial accounting and reporting burdens and complexities; unexpected changes in, or impositions of, legislative or regulatory requirements; failure of laws to protect intellectual property rights adequately; inadequate local infrastructure and difficulties in managing and staffing international operations; delays resulting from difficulty in obtaining import or export licenses; limitations on repatriation of funds; tariffs, quotas and other trade barriers and restrictions; transportation delays; operating in locations with a higher incidence of corruption and fraudulent business practices; limitations on our ability to enforce legal rights and remedies with third parties and other factors beyond our control, including terrorism, war (including in light of the continuing conflict between Russia and Ukraine which may divert governmental and other funding from life sciences to the Ukraine military effort), natural disasters, climate change and diseases. Overall demand for our products could be reduced as a result of a global economic recession or political unrest, especially in areas such as healthcare, education and research. In addition, geopolitical conflicts have had an impact on global economic conditions and has led to increased inflationary pressure and rising interest rates, which we expect will lead to an increase in rental payments we owe in connection with certain of our leases as they come up for renewal or rent review, including our headquarters located at Discovery Drive, Cambridge, United Kingdom, the rent for which is up for review during 2023, which may have a negative impact on our financial condition and results of operations. Customers or suppliers may experience cash flow problems, including in light of the COVID-19 pandemic and related response measures, and as a result, customers have and may continue to modify, delay or cancel plans to purchase our products. Any inability of current and/or potential customers to purchase and/or pay for our products due to, among other things, declining economic conditions as a result of inflation, rising interest rates, changes in spending patterns and the effects of governmental initiatives to manage economic conditions may have a negative impact on our financial condition and results of operations.

Changes in U.S. social, political (including as a result of the potential U.S. statutory debt limit standoff), regulatory and economic conditions or laws and policies governing banking and healthcare systems and drug prices, foreign trade, manufacturing and development and investment in the territories and countries where we or our customers operate could adversely affect our business and our operating results.

The application of laws and regulations implicating global transactions is often unclear and may at times conflict. Compliance with these laws and regulations may involve significant costs or require changes in our business practices that result in reduced revenue and profitability. For example, we may be exposed to any changes in national or international regulations governing the transport of biological products across borders. Non-compliance could also result in fines, damages, criminal sanctions, prohibited business conduct and damage to our reputation. We incur additional legal compliance costs associated with our global operations and could become subject to legal penalties in foreign countries if we do not comply with local laws and regulations, which may be substantially different from those in the United Kingdom or United States. Any such non-compliance, even if prohibited by our internal policies, could have an adverse effect on our business and result in significant fines or penalties.

#### Trade relations between China and the United States could materially and adversely affect our business.
Changes in political conditions in the United States and China and changes in the state of China-U.S. relations are difficult to predict and could adversely affect our business. We currently sell products in China and

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have invested, and will continue to invest, in providing localized product support, operations and technology to better serve customers in China, and if the Chinese government makes any changes to its laws or policy concerning foreign ownership of companies or assets located within China, or imposes any significant increases on tariffs on goods imported into or out of China, it could have a significant impact on our business and financial results.

In addition, because of our continuing focus on strategic investment into providing more products to the life science and academic research market in China, any deterioration in political or trade relations might cause a public perception in the United States or elsewhere that may cause our products to become less attractive. We cannot predict what effect any changes in China-U.S. relations may have on our ability to access capital or effectively operate in China, which could have a material adverse effect on our business and results of operations.

***Geopolitical conflicts have had an impact on global economic conditions and has led to increased inflationary pressure and rising interest rates, which may have a negative impact on our financial condition and results of operations.***

For example, the United States has recently experienced historically high levels of inflation. The annual inflation rate for the United States was approximately 6.5% for the year ended December 31, 2022. Similarly, the United Kingdom has recently experienced historically high levels of inflation. The annual inflation rate for the United Kingdom was approximately 9.2% for the year ended December 31, 2022 As inflation rates continue to increase or persist for a prolonged period of time, it may continue to affect our expenses, including, but not limited to, employee compensation expenses and benefits as well as increased general administrative costs, such as rents and utilities. In the event inflation continues to increase, we may have to consider increasing the prices of our products and services in order to maintain satisfactory margins. Any attempts to offset cost increases with price increases may result in reduced sales, increase customer dissatisfaction, or otherwise harm our reputation. Moreover, to the extent inflation has other adverse effects on the market, it may adversely affect our business, financial condition and results of operations.

#### As a multinational corporation, we are exposed to fluctuations in currency exchange rates, which could adversely affect our cash flows and results of operations.
International markets contribute a substantial portion of our revenue, and we intend to continue expanding our presence in these regions. The exposure to fluctuations in currency exchange rates takes on different forms. International revenue and costs are subject to the risk that fluctuations in exchange rates could adversely affect our reported revenue and profitability when translated into pounds sterling for financial reporting purposes. The majority of our revenue is denominated in U.S. dollars, and the majority of our costs and our borrowings under our revolving credit facility are in British pounds sterling. These fluctuations could also adversely affect the demand for products and services provided by us. As a multinational corporation, our businesses occasionally invoice third-party customers in currencies other than the one in which they primarily do business (the "functional currency"). Movements in the invoiced currency relative to the functional currency could adversely impact our cash flows and our results of operations. As our international sales grow, exposure to fluctuations in currency exchange rates could have a larger effect on our financial results. In the years ended December 31, 2021 and 2022, currency translation had a negative effect of £10.9 million and a positive effect of £19.0 million, respectively, on revenue due to the exchange rate between Pound Sterling and U.S. Dollar. See Item 11. "Quantitative and Qualitative Disclosures About Market Risk."

#### We are subject to product liability and other claims in the ordinary course of business.
Our business involves risk of product liability, claims related to providing incorrect product information at the time of purchase and other claims in the ordinary course of business arising from the products that we source from various manufacturers or produce ourselves. Furthermore, there may be product liability risks that are unknown, or which become known in the future. Substantial, complex, or extended litigation on any claim could cause us to incur significant costs and distract our management. For example, lawsuits by governmental authorities, employees, shareholders, suppliers, collaborators, distributors, customers, competitors, or others could be very costly and substantially disrupt our business. Our exposure to such claims may increase as we seek to increase the geographic scope of our sourcing and sales activities and to the extent that we expand our manufacturing operations. We maintain insurance policies and, in some cases, our suppliers, customers and predecessors of acquired companies have indemnified us against certain claims. We cannot assure you that our insurance coverage or indemnification agreements will be available in all pending or any future cases brought

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against us. Furthermore, our ability to recover under any insurance or indemnification arrangements is subject to the terms and conditions of such insurance or indemnification agreement, as well as the financial viability of our and such third parties' insurers, as well as legal enforcement under the local laws governing these arrangements. Insurance coverage in general or coverage for certain types of liabilities, such as product liability in developing markets, may not be readily available for purchase or cost-effective for us to purchase. Furthermore, many of our insurance policies are subject to deductibles and retentions. Accordingly, we could be subject to uninsured and unindemnified future liabilities requiring us to provide additional reserves to address such liabilities. An unfavorable result in a case for which adequate insurance or indemnification is not available could adversely affect our business, financial condition, and results of operations.

We are also involved in various disputes, litigation, and regulatory matters incidental to and in the ordinary course of our business, including employment matters, commercial disputes, government compliance matters, environmental matters, and other matters arising out of the normal conduct of our business. Where merited, we will vigorously defend ourselves in such matters. While the impact of this litigation has or may be immaterial, there can be no assurance that the impact of the pending and any future claims will not be material to our business, financial condition, or results of operations in the future.

#### Our business, financial condition and results of operations depend upon maintaining our relationships with suppliers.
Our ability to sustain our gross margins has been, and will continue to be, dependent in part upon our ability to obtain favorable terms from our suppliers. These terms may change from time to time, and such changes could adversely affect our gross margins over time. In addition, our results of operations and cash flows could be adversely impacted by the acceleration of payment terms to our suppliers and/or the imposition of more restrictive credit terms and other contractual requirements. Further, if for any reason we enter into a contract with a supplier on unfavorable terms, it may harm our ability to negotiate our future contracts with that supplier or with other suppliers.

Some of our competitors are increasing their manufacturing operations both internally and through acquisitions of manufacturers, including manufacturers that supply products to us. In addition, we manufacture certain products that may compete directly with products we source from our suppliers. To date, we have not experienced an adverse impact on our ability to continue to source products from manufacturers that have been vertically integrated or otherwise compete with us, although there is no assurance that we will not experience such an impact in the future.

The loss of one or more of our large suppliers, including as a result of consolidation, a material reduction in their supply of products or provision of services to us, extended disruptions or interruptions in their operations or material changes in the terms we obtain from them, could have a material adverse effect on our business, financial condition and results of operations.

***We are highly dependent on our management and employees. Competition for our employees is intense, and we may not be able to attract and retain the highly skilled employees that we need to support our business and our intended future growth.***

Our success largely depends on the skills, experience, and continued efforts of our management, including our Chief Executive Officer and our senior leadership. The replacement of certain members of our global leadership team would likely involve the expenditure of significant time and financial resources, and the loss of any such individual may significantly delay or prevent the achievement of our business objectives. As we continue to grow, our success also depends on our ability to attract, motivate, and retain highly qualified individuals who will also fit within the Abcam culture. Competition for senior management and other personnel in our industry is intense, and the pool of suitable candidates is limited. If qualified personnel become scarce or difficult to attract or retain in our industry for compensation-related or other reasons, we could experience higher labor, recruiting or training costs. Further, new hires may require significant training and time before they achieve full productivity and may not become as productive as we expect. The failure to attract, retain and properly motivate members of our senior management team and other employees, to find suitable replacements for them in the event of death, illness, or their desire to pursue other professional opportunities, or to maintain our corporate culture as we continue to grow, could have a negative effect on our operating results.

We are also reliant on contractors in certain key operational roles. While we are seeking to replace such contractors with permanent employees, until such appointments are made, we are subject to the risk inherent in

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the use of contractors, including the risk that they accept an alternative engagement or that they are not sufficiently motivated, incentivized or aligned to our commercial objectives.

#### We may be required to record a significant charge to earnings if our goodwill and other amortizable intangible assets or other investments become impaired.
We are required under IFRS to test goodwill for impairment at least annually and to review our goodwill, amortizable intangible assets and other investments, including those acquired through acquisition activity, for impairment when events or changes in circumstance indicate the carrying value may not be recoverable. Factors that could lead to impairment of goodwill, amortizable intangible assets, and other investments, including those acquired through acquisitions, include significant adverse changes in the business climate and actual or projected operating results and declines in the financial condition of our business.

During the year ended 31 December 2022, assets relating to Firefly BioWorks multiplex and assay technology, were actively marketed, and classified as held for sale. We were not successful in locating a buyer for these assets and a decision was made to discontinue our investment in these products and technology. As such we incurred an impairment charge of £18.3m for the assets classified as held for sale, of which £1.6m and £15.8m related to assets reclassified out of goodwill and amortizable intangibles respectively. For the year ended December 31, 2021, we experienced an impairment charge of £2.1 million as a result of a software asset developed as part of the Oracle Cloud ERP project that was no longer required. In this same period, we experienced an impairment charge of £1.1 million in internally developed technology assets related to AxioMx, Inc. for which the technology developed will not be used. The assets were capitalized in 2020. In addition, for the year ended June 30, 2020, we experienced an impairment charge of £14.9 million that was related to the full impairment of the acquisition intangible in respect of our *in vitro* monoclonal antibody production technology that we acquired from AxioMx, Inc. in 2015 and subsequent post-acquisition expenditures that were capitalized. This arose following an appraisal of the ability to utilize at scale this technology, whereby, although technical feasibility remains valid, the challenges to realize material commercial returns have resulted in the conclusion not to further pursue active development and substantive utilization of this specific acquired technology.

***Our reputation, ability to do business and results of operations may be impaired by improper conduct by any of our employees, agents, or business partners.***

We cannot provide assurance that our internal controls and compliance systems will always protect us from acts committed by employees, agents, or business partners of ours (including third-party suppliers, distributors or of businesses we acquire or partner with) that would violate U.S. and/or other national laws, including the laws governing payments to government officials, bribery, fraud, kickbacks and false claims, pricing, sales and marketing practices, conflicts of interest, competition, export and import compliance, money laundering and data privacy. In particular, the U.S. Foreign Corrupt Practices Act, the U.K. Bribery Act and similar anti-bribery laws in other jurisdictions generally prohibit companies and their intermediaries from making improper payments for the purpose of obtaining or retaining business, and we operate in many parts of the world that have experienced corruption to some degree. We may enter new jurisdictions and will need to abide by anti-bribery laws in those jurisdictions. All of our employees are required to undertake regular training on topics like anti-bribery, corruption and data protection legislation, among others. Additionally, we require our suppliers and distributors to sign up and abide by our Supplier and Distributor Codes of Conduct; however, there can be no assurance that our employees, suppliers, and distributors will not engage in improper actions. Any such improper actions or allegations of such acts could damage our reputation and subject us to civil or criminal investigations in the United States and in other jurisdictions, and any related shareholder lawsuits could lead to substantial civil and criminal, monetary and nonmonetary penalties and could cause us to incur significant legal and investigatory fees. In addition, a government may seek to hold us liable as a successor for violations committed by companies in which we invest or that we acquire. We also rely on our suppliers to adhere to our supplier standards of conduct, and material violations of such standards of conduct could occur that could have a material effect on our business, reputation, financial condition and results of operations.

***The indemnification provisions of acquisition agreements by which we have acquired companies or businesses may not fully protect us, and we may face unexpected liabilities.***

Certain of the acquisition agreements by which we have acquired companies or businesses require the former owners to indemnify us against certain liabilities related to the operation of the company or business before we acquired it. In most of these agreements, however, the liability of the former owners is limited, and certain former owners may be unable to meet their indemnification responsibilities. While we have limited

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escrow and retention agreements in place relating to our acquisitions, these may not be enough to cover our exposure if a significant liability arose in connection with any acquisition agreement. We cannot assure you that these indemnification provisions, escrow agreements and retention agreements will protect us fully or at all, and as a result we may face unexpected liabilities that adversely affect our business, financial condition and results of operations.

***Certain aspects of our business rely on relationships with collaborative partners, distributors and other third parties for development, supply and marketing of certain products and potential products, and such collaborative partners or other third parties could fail to perform sufficiently.***

We believe that success in penetrating certain geographic markets depends in part on our ability to develop and maintain relationships with key distributors. Relying on distribution relationships is risky because, among other things, our distributors may: not devote sufficient resources to the sales of our products; fail to obtain approvals necessary to distribute our products; be acquired by other companies and terminate our distribution agreements or become insolvent; or decline to renew existing agreements on acceptable terms. Because these and other factors may be beyond our control, the distribution of our products in certain jurisdictions may be delayed or otherwise adversely affected. If we or any of our distributors terminate a distribution agreement, we may be required to devote additional resources to commercialization and distribution, which could adversely affect our business, financial condition and results of operations.

***Changes in our tax rates, unavailability of certain tax credits or reliefs or exposure to additional tax liabilities or assessments could affect our profitability, and audits by tax authorities could result in additional tax payments for prior periods.***

We are affected by various U.S. and non-U.S. taxes, including direct and indirect taxes imposed on our global activities, such as corporate income, withholding, customs, excise, value-added, sales and other taxes. Significant judgment is required in determining our provisions for taxes, and there are many transactions and calculations where the ultimate tax determination is not fully certain, or an alternative calculation has been applied.

The amount of income tax we pay is subject to ongoing audits by U.S. federal, state and local tax authorities and by non-U.S. tax authorities. If audits result in payments or assessments different from our reserves, our future results may include unfavorable adjustments to our tax liabilities, and our financial statements could be adversely affected. Any further significant changes to the tax system and tax rates in the United States or in other jurisdictions (including changes in the taxation of international income as further described below) could adversely affect our business, financial condition and results of operations.

We carry out extensive research and development activities, and as a result, we benefit in the United Kingdom from HMRC's research and development expenditure credit ("RDEC"), which provides relief against U.K. corporation tax. Broadly, RDECs provide a tax credit currently equal to 13% of "qualifying research and development expenditure" (expected to increase to 20.0% for qualifying research and development expenditure incurred after April 1, 2023) by certain companies where certain criteria are met. Based on criteria established by HMRC, a portion of expenditures incurred in relation to our research and development and manufacturing development activities are eligible for RDEC relief. Our qualifying research and development expenditures largely consist of employment costs for research staff, consumables and certain internal overhead costs incurred as part of research projects for which we do not receive revenue and are loss generating. To the extent a company cannot utilize the RDEC against U.K. corporation tax, then certain rules apply that allow the RDEC to reduce the tax liability of certain specified taxes, and to the extent it is not possible to utilize the RDEC in full, then the net tax credit is repaid to the company by HMRC.

We also benefit from the U.K.'s "patent box" regime, which allows certain profits attributable to revenues from patented products (and other qualifying income) to be taxed at an effective corporation tax rate of 10%.

If, however, there are unexpected adverse changes in U.K. tax legislation governing the RDEC scheme or the "patent box" regime, or for any reason we are unable to qualify for such advantageous tax legislation, in full or in part, then our business, results of operations and financial condition may be adversely affected. In particular, HM Treasury and HMRC launched a consultation in January 2023 entitled "R&D Tax Reliefs Review, Consultation on a single scheme" which seeks views on the possible merger of the RDEC scheme and the "SME R&D Relief" scheme applicable to "small and medium" sized companies, the outcome of which is currently uncertain. If it is decided to merge the schemes, any new regime is expected to apply with effect from April 1, 2024.

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#### Changes in tax law relating to multinational corporations could adversely affect our tax position.
The U.S. Congress, government agencies in non-U.S. jurisdictions where we and our affiliates do business, and the Organization for Economic Cooperation and Development ("OECD") have recently focused on issues related to the taxation of multinational corporations. One example is in the area of "base erosion and profit shifting," where profits are claimed to be earned for tax purposes in low-tax jurisdictions, or payments are made between affiliates from a jurisdiction with high tax rates to a jurisdiction with lower tax rates. The OECD has released several components of its comprehensive plan to create an agreed set of international rules for addressing base erosion and profit shifting.

As we operate in numerous taxing jurisdictions, the application of tax laws can be subject to diverging and sometimes conflicting interpretations by tax authorities of these jurisdictions. It is not uncommon for taxing authorities in different countries to have conflicting views, for instance, with respect to, among other things, whether a permanent establishment exists in a particular jurisdiction, the manner in which the arm's length standard is applied for transfer pricing purposes, or with respect to the valuation of intellectual property. For example, if the taxing authority in one country where we operate were to reallocate income from another country where we operate, and the taxing authority in the second country did not agree with the reallocation asserted by the first country, we could become subject to tax on the same income in both countries, resulting in double taxation. If taxing authorities were to allocate income to a higher tax jurisdiction, subject our income to double taxation or assess interest and penalties, it could increase our tax liability, which could adversely affect our financial position and results of operations.

Due to the potential for changes to tax laws and regulations or changes to the interpretation thereof (including with respect to the Inflation Reduction Act which, among other changes, introduced a 15% corporate minimum tax on certain U.S. corporations and a 1% excise tax on certain stock redemptions by U.S. corporations, which the U.S. Treasury indicated may also apply to certain stock redemptions by a foreign corporation funded by certain United States affiliates), the ambiguity of tax laws and regulations, the subjectivity of factual interpretations, uncertainties regarding the geographic mix of earnings in any particular period, and other factors, our estimates of effective tax rate and income tax assets and liabilities may be incorrect and our financial statements could be adversely affected. The impact of the factors referenced in the first sentence of this paragraph may be substantially different from period-to-period.

#### The application of indirect taxes could adversely affect our business and results of operations.
The application of indirect taxes, such as sales and use tax, value-added tax, provincial taxes, goods and services tax, business tax and gross receipt tax, to our business is a complex and evolving issue. Significant judgment is required to evaluate applicable tax obligations. As a result, amounts recorded may be subject to adjustments by the relevant tax authorities. In many cases, the ultimate tax determination is not fully certain because it is not clear how new and existing statutes might apply to our business. A number of jurisdictions globally have introduced (or are looking to introduce) additional reporting, record-keeping or value-added tax (or similar taxes) calculation, collection and remittance obligations on businesses like ours that are engaged in ecommerce.

Further, in the United States, states are able to tax their residents on remote sales. Following the U.S. Supreme Court's decision in 2018 in South Dakota v. Wayfair, a U.S. state may require by way of "economic nexus laws" an online seller to collect sales taxes imposed by that state, even if the seller has no physical presence in that state, thus permitting a wider enforcement of such sales tax collection requirements against non-U.S. companies that have historically not been responsible for state or local tax collection unless they had physical presence in the U.S. customer's state. Such legislation could require us to incur substantial costs in order to comply, including costs associated with legal advice, tax calculation, collection, remittance and audit requirements, which could make selling in such markets less attractive and could adversely affect our business.

***We are required to comply with a wide variety of laws and regulations and are subject to regulation by various federal, state, and foreign agencies.***

The vast majority of our products are marketed and sold as being for research use only, and as such, they are not generally subject to the extensive laws and regulations that would apply if our products were to be marketed and sold for diagnostic or therapeutic use.

RUO products are regulated by the U.S. Food and Drug Administration (the "FDA") as medical devices, and include in vitro diagnostic products in the laboratory research phase of development that are being shipped or

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delivered for an investigation that is not subject to the FDA's investigational device exemption requirements. Although medical devices are subject to stringent FDA oversight, products that are intended for RUO and are labeled as RUO are exempt from compliance with most FDA requirements, including premarket clearance or approval, manufacturing requirements, and others. A product labeled RUO but which is actually intended for clinical diagnostic use may be viewed by the FDA as adulterated and misbranded under the Federal Food, Drug, and Cosmetic Act ("FDCA"), and subject to FDA enforcement action. The FDA has indicated that when determining the intended use of a product labeled RUO, the FDA will consider the totality of the circumstances surrounding distribution and use of the product, including how the product is marketed and to whom. The FDA could disagree with our assessment that our products are properly marketed as RUOs, or could conclude that products labeled as RUO are actually intended for clinical diagnostic use and could take enforcement action against us, including requiring us to stop distribution of our products until we are in compliance with applicable regulations, which would reduce our revenue, increase our costs and adversely affect our business, prospects, results of operations and financial condition. In the event that the FDA requires us to obtain marketing authorization of our RUO products in the future, there can be no assurance that the FDA will grant any clearance or approval requested by us in a timely manner, or at all.

In the event that the applicable laws and regulations were to change such that our products were subject to greater regulatory control, it could have a significant impact on our ability to market and sell our products and could require us to spend significant amounts to ensure and monitor compliance with such laws and regulations such that our business, financial condition and results of operations could be adversely affected. Similarly, if we fail to appropriately market and sell our products as being for research use only, we may be found to be selling products for diagnostic use and in breach of the appropriate laws and regulations. Though we are careful to ensure that our products are clearly identified as being for research use only and have processes in place to ensure we are not selling our products to customers who may intend to use our products other than for research, including for diagnostic use, we cannot be certain that our customers will not use our products for purposes other than those for which they are manufactured, identified and marketed.

Generally, we are subject to various local, state, federal, foreign, and transnational laws and regulations, which include the requirements of the FDA, the HHS and other comparable agencies and, in the future, any changes to such laws and regulations could adversely affect us. In particular, for a very small number of our products which are regulated as non-RUO medical devices, we are subject to laws and regulations concerning current good manufacturing practices and certain other requirements applicable to medical devices. We also maintain certain quality management systems accreditations at our facilities in Cambridge, United Kingdom, Hangzhou, China (ISO9001) and Fremont, California (ISO13485). Our subsidiaries may be required to register for permits and/or licenses with and may be required to comply with the laws and regulations of, the FDA, the HHS, foreign agencies and/or comparable state agencies as well as certain accrediting bodies depending upon the type of operations and location of product distribution, manufacturing, and sale. The manufacture, distribution, and marketing of certain of our products are subject to extensive ongoing regulation by the FDA and other equivalent local, state, federal and non-U.S. regulatory authorities. In addition, we are subject to inspections by these regulatory authorities and audits by notified bodies. Failure by us or by our customers to comply with the requirements of these regulatory authorities or quality accreditation agencies, including without limitation, remediating any inspectional observations to the satisfaction of these regulatory authorities, could result in warning letters, product recalls or seizures, monetary sanctions, injunctions to halt manufacture and distribution, restrictions on our operations, civil or criminal sanctions or withdrawal of existing or denial of pending approvals, or certifications including those relating to products or facilities. In addition, such a failure could expose us to contractual or product liability claims, contractual claims from our customers, as well as ongoing remediation and increased compliance costs, any or all of which could be significant.

Although we do not sell such products ourselves, a limited number of our products are classified as in vitro diagnostic medical devices ("IVD") in the E.U. The E.U. regulatory landscape concerning medical devices (including IVD) recently evolved.

Regulation (E.U.) 2017/746 of the European Parliament and of the Council on IVD and repealing Directive 98/79/EC and Commission Decision 2010/227/EU ("E.U. IVDR") IVDR became applicable on May 26, 2022. However, on October 14, 2021, the European Commission proposed a "progressive" roll-out of the E.U. IVDR to prevent disruption in the supply of IVD.

Subject to the transitional provisions (i.e., a tiered system extending the grace period for many IVD (depending on their risk classification) before they have to be fully compliant with the EU IVDR) and in order for our products to be sold in the E.U., our products must comply with the general safety and performance

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requirements of the E.U. IVDR. Compliance with these requirements is a prerequisite to be able to affix the European Conformity ("CE mark") to our products, without which they cannot be sold or marketed in the EU. All IVD placed on the market in the E.U. must meet the general safety and performance requirements laid down in Annex I to the EU IVDR including the requirement that an IVD must be designed and manufactured in such a way that, during normal conditions of use, it is suitable for its intended purpose. IVD must be safe and effective and must not compromise the clinical condition or safety of patients, or the safety and health of users and – where applicable – other persons, provided that any risks which may be associated with their use constitute acceptable risks when weighed against the benefits to the patient and are compatible with a high level of protection of health and safety, taking into account the generally acknowledged state of the art. To demonstrate compliance with the general safety and performance requirements manufacturers must undergo a conformity assessment procedure, which varies according to the type of IVD and its (risk) classification. Except for (general) IVD (i.e., all IVD other than those covered by Annex II to the EU IVDD and IVD for self-testing), where the manufacturer can self-assess the conformity of its products with the essential requirements, a conformity assessment procedure requires the intervention of a notified body. The notified body would typically audit and examine the technical file and the quality system for the manufacture, design and final inspection of our IVD. If satisfied that the relevant product conforms to the relevant general safety and performance requirements, the notified body issues a certificate of conformity, which the manufacturer uses as a basis for its own declaration of conformity. The manufacturer may then apply the CE mark to the IVD, which allows the IVD to be placed on the market throughout the E.U.

If we fail to comply with applicable laws and regulations, we would be unable to affix the CE mark to our products, which would prevent them from being sold within the E.U. The aforementioned E.U. rules are generally applicable in the EEA. Non-compliance with the above requirements would also prevent our IVD from being sold in these three countries.

We are also subject to a variety of federal, state, local and international laws and regulations that govern, among other things, the importation and exportation of products, animal welfare, the handling, transportation, and manufacture of substances that could be classified as hazardous, laws governing government contracts and our business practices such as anti-corruption and antitrust laws. Although we believe that we comply in all material respects with applicable laws and regulations, there can be no assurance that a regulatory agency or tribunal would not reach a different conclusion concerning the compliance of our operations with applicable laws and regulations. In addition, there can be no assurance that we will be able to maintain or renew existing permits, licenses or other regulatory approvals or obtain, without significant delay, future permits, licenses, or other approvals needed for the operation of our businesses. Furthermore, loss of a permit, license, or other approval in any one portion of our business may have indirect consequences in other portions of our business if regulators or customers, for example, cease doing business with such other portion due to fears that such loss is a sign of broader concerns about our ability to deliver products or services of sufficient quality.

Any noncompliance by us with applicable laws and regulations or the failure to maintain, renew or obtain necessary permits, certifications and licenses could have an adverse effect on our business, financial condition, and results of operations. Failure to comply with these laws and regulations can lead to agency action, including warning letters, product recalls, product seizures, monetary sanctions, injunctions to halt manufacturing or distribution, restrictions on our operations, withdrawal of existing or denial of future approvals, permits, certifications or registrations, including those relating to products or facilities and civil and criminal sanctions. To the extent these agencies were to take enforcement action, such action may be publicly available, and such publicity could harm our ability to sell these regulated products globally and may harm our reputation. In addition, such actions could limit the ability of our customers to obtain regulatory clearance, certifications or approval for their products in the United States or abroad and/or our customers may incur significant costs in obtaining or maintaining such regulatory clearances, certifications or approvals in the United States or abroad. In addition, any such failure relating to the products we provide exposes us to direct and third-party product liability claims as well as contractual claims from our customers, including claims for reimbursement for lost or damaged products, as well as potential recall liability, which could be significant. Customers may also claim loss of profits due to lost or delayed sales, although our direct contracts with end customers typically place limits on such claims. There can be no assurance that any such contractual limitation will be applicable or sufficient or fully enforced in any given situation.

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#### Risks Relating to our Intellectual Property
***If we are unable to obtain and maintain patent protection for our technology, products and potential products, or if the scope of the patent protection obtained is not sufficiently broad, we may not be able to compete effectively in our markets.***

We rely, and will continue to rely, upon a combination of patents, trade secret protection and confidentiality agreements to protect the intellectual property related to our proprietary technologies, products, and potential products. In the aggregate, these intellectual property assets are of material importance to our business. We believe, however, that no single patent, technology, trademark, trade secret, intellectual property asset or license is material in relation to Abcam's business as a whole. Our success depends, in part, on our ability to secure and maintain patent protection in the United States and other countries with respect to our technology, current products and potential products, and any future potential products and technology we may develop. We seek to protect our proprietary position by filing or collaborating with our licensors to file patent applications in the United States and abroad related to our proprietary technologies, products, and potential products. Our pending and future patent applications may not result in patents being issued which protect our technology or their intended uses or which effectively prevent others from commercializing competitive technologies or products.

The patent prosecution process is expensive, time consuming and complex, and we may not be able to file, prosecute, maintain, defend, enforce, or license all necessary or desirable patents at a reasonable cost or in a timely manner in all desirable jurisdictions. As a result, we may not be able to prevent competitors or other third parties from developing and commercializing competitive products in all such fields and jurisdictions.

It is possible that we will fail to identify patentable aspects of our research and development output or fail to take the necessary steps to seek patent protection before it is too late to obtain patent protection. We may not have the right to control the preparation, filing, and prosecution of patent applications, or to maintain the rights to patents licensed from third parties. Therefore, these patents and patent applications may not be prosecuted and enforced in a manner consistent with the best interests of our business. The patent applications that we own, or in-license may fail to result in issued patents with claims that cover our relevant proprietary products and technology, including current products, potential products, and any future potential products we may develop in the United States or in other foreign countries, in whole or in part. Our existing patents may have issues with claims that fail to cover our relevant proprietary products and technology, including current products, potential products, and any future potential products we may develop in the United States or in other foreign countries, in whole or in part. Alternately, our existing patents and any future patents we obtain may not be sufficiently broad to prevent others from using our technology or from developing competing products and technologies. Patents may not be granted for a number of reasons, including known or unknown prior art, deficiencies in the patent application or the lack of novelty of the underlying invention or technology. In addition, publications of discoveries in scientific literature often lag behind the actual discoveries, and patent applications in the United States and other jurisdictions are typically not published until 18 months after filing, or in some cases, not at all. Therefore, we cannot be certain that we or our licensors were the first to make the inventions claimed in our owned or licensed patents or pending patent applications or that we or our licensors were the first to file for patent protection of such inventions.

Even if patents do successfully issue and even if such patents cover our current products, current potential products, and any future potential products we may develop, third parties may challenge their validity, ownership, enforceability, or scope thereof, which may result in such patents being narrowed, invalidated, or held unenforceable or circumvented. We may become involved in proceedings challenging our owned or licensed patent rights, including, but not limited to, opposition, derivation, reexamination, inter partes review, post grant review or interference. Any successful challenge to these patents or any other patents owned by or licensed to us could deprive us of rights necessary for the successful commercialization of any of our products and may result in loss of patent rights or freedom to operate, loss of exclusivity, or patent claims being narrowed, invalidated or held unenforceable, any of which could limit our ability to stop others from using or commercializing similar or identical technology and products, or could limit the duration of the patent protection of our technology, products and potential products. Such proceedings also may result in substantial costs and require significant time from our management and employees, even if the eventual outcome is favorable to us. In addition, the issuance of a patent does not give us the right to practice the patented invention. Third parties may have blocking patents that could prevent us from marketing our products, if approved, or practicing our own patented technology. Our competitors may also be able to circumvent our patents by developing similar or alternative potential products in a non-infringing manner.

The patent position of life sciences companies can be uncertain, involves complex legal, scientific, and factual questions, and is characterized by the existence of large numbers of patents and litigation based on

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allegations of patent or other intellectual property infringement, misappropriation, violation, or invalidity. As a result, the issuance, scope, validity, enforceability, and commercial value of our patent rights are uncertain. If the patent applications we hold or have in-licensed with respect to our technology products and potential products fail to issue, if the validity, breadth or strength of protection of our patents and patent applications with respect to our technology, products and potential products is threatened or if they fail to provide meaningful exclusivity for any of our current or future technology products and potential products, it could dissuade companies from collaborating with us, encourage competitors to develop competing products or technologies and threaten our ability to commercialize future potential products. Any such outcome could harm our business.

In addition, although we seek to protect our ownership of intellectual property rights by ensuring that our agreements with our employees, consultants, collaborators, independent contractors and other third parties with whom we do business include provisions requiring such parties to assign rights in inventions to us, we may in the future be subject to claims by former employees, consultant, collaborators, independent contractors or other third parties asserting an ownership right in our owned or licensed patents or patent applications. An adverse determination in any such submission or proceeding may result in loss of exclusivity or freedom to operate or in patent claims being narrowed, invalidated or held unenforceable, in whole or in part, which could limit our ability to stop others from using or commercializing similar products, potential products or technology, without payment to us, or could limit the duration of the patent protection covering our products, potential products and technology. Such challenges may also result in our inability to develop, manufacture, or commercialize our products, potential products, and technologies without infringing third-party patent rights. In addition, if the breadth or strength of protection provided by our owned or licensed patents and patent applications is threatened, it could dissuade companies from collaborating with us to license, develop or commercialize current or future products, potential products, or technologies. Any of the foregoing could have an adverse effect on our competitive position, business, financial condition, results of operations and prospects.

***Variability and developments in patent laws or patent jurisprudence could diminish the value of patents in general, thereby impairing our ability to protect our products and potential products.***

As is the case with other companies in our industry, our success depends in part on obtaining, maintaining, enforcing, and defending intellectual property, particularly patents. Obtaining and enforcing patents in the life science industry involves technological and legal complexity, and obtaining and enforcing life science patents is costly, time-consuming, and inherently uncertain. Changes in either the patent laws or their interpretation in the United States or other jurisdictions may increase the uncertainties and costs surrounding the prosecution of our patents, diminish our ability to protect our inventions, obtain, maintain, defend, and enforce our intellectual property rights and, more generally, affect the value of our intellectual property or narrow the scope of our patent rights.

The Leahy-Smith America Invents Act (the "AIA"), which was passed in September 2011, resulted in significant changes to the U.S. patent system. An important change introduced by the AIA is that, as of March 16, 2013, the United States transitioned from a "first-to-invent" to a "first-inventor-to-file" system for deciding which party should be granted a patent when two or more patent applications are filed by different parties claiming the same invention. Under a "first-inventor-to-file" system, assuming the other requirements for patentability are met, the first inventor to file a patent application generally will be entitled to a patent on the invention regardless of whether another inventor had made the invention earlier. A third party that files a patent application in the United States Patent and Trademark Office (the "USPTO"), after March 16, 2013 but before us could therefore be awarded a patent covering an invention similar or identical to one of ours even if we made our invention before the third party made theirs. This will require us to be cognizant going forward of the time from invention to filing of a patent application and be diligent in filing patent applications, but circumstances could prevent us from promptly filing patent applications on our inventions.

Among some of the other changes introduced by the AIA are changes that limit where a patentee may file a patent infringement suit and provide additional opportunities for third parties to challenge any issued patent in the USPTO. This applies to all of our U.S. patents, even those issued before March 16, 2013. Because of a lower evidentiary standard in USPTO proceedings compared to the evidentiary standard in U.S. federal district courts necessary to invalidate a patent claim, a third party could potentially provide evidence in a USPTO proceeding sufficient for the USPTO to hold a claim invalid even though the same evidence would be insufficient to invalidate the claim if first presented in a district court action. Accordingly, a third party may attempt to use the USPTO procedures to invalidate our patent claims that would not have been invalidated if first challenged by the third party as a defendant in a district court action. It is not clear what, if any, impact the AIA will have on the operation of our business. However, the AIA and its implementation could increase the uncertainties and costs

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surrounding the prosecution of our or our licensors' patent applications and the enforcement or defense of our or our licensors' issued patents.

In addition, the United States federal government retains certain rights in inventions produced with its financial assistance under the Bayh-Dole Act. The federal government retains a "nonexclusive, nontransferable, irrevocable, paid-up license" for its own benefit. The Bayh-Dole Act also provides federal agencies with "march-in rights." March-in rights allow the government, in specified circumstances, to require the contractor or successors in title to the patent to grant a "nonexclusive, partially exclusive, or exclusive license" to a "responsible applicant or applicants." If the patent owner refuses to do so, the government may grant the license itself. Some of our licensed patents are subject to the provisions of the Bayh-Dole Act. If our licensors fail to comply with the regulations of the Bayh-Dole Act, they could lose title to any patents subject to such regulations, which could affect our license rights under the patents and our ability to stop others from using or commercializing similar or identical technology and products, or limit patent protection for our technology and products.

The United States and many other countries have adopted a doctrine of "patent exhaustion," which provides that once a patentee sells one of its products, it can no longer exercise control over the specific product. This could limit our ability to rely on our patents to prevent the import of products we have placed into the market in one jurisdiction into another jurisdiction.

Additionally, the U.S. Supreme Court has ruled on several patent cases in recent years either narrowing the scope of patent protection available in certain circumstances or weakening the rights of patent owners in certain situations, and there are other open questions under patent law that courts have yet to decisively address. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of events has created uncertainty with respect to the value of patents, once obtained. Depending on decisions by Congress, the federal courts and the USPTO, the laws and regulations governing patents could change in unpredictable ways and could weaken our ability to obtain new patents or to enforce our existing patents and patents that we might obtain in the future. In addition, European patent laws can be complex and uncertain, and there could be similar changes in the laws of foreign jurisdictions that may impact the value of our patent rights or our other intellectual property rights. Complying with these laws and regulations could limit our ability to obtain new patents in the future that may be important for our business, and changes in such laws may have an adverse effect on our patent rights and our ability to protect, defend and enforce our patent rights in the future, as well as on our competitive position, business, financial condition, results of operations and prospects.

***Obtaining and maintaining our patent protection depends on compliance with various procedural, document submission, fee payment and other requirements imposed by governmental patent agencies, and our patent protection could be reduced or eliminated for non-compliance with these requirements.***

The USPTO, European Patent Office ("EPO") and other patent agencies require compliance with a number of procedural, documentary, fee payment and other similar provisions during the patent application process. In addition, periodic maintenance and annuity fees on any issued patent are due to be paid to the USPTO, EPO and other patent agencies over the lifetime of the patent. While an inadvertent failure, including due to the effect of the COVID-19 pandemic on us or our patent maintenance vendors, to make timely payment of such fees or to comply with such provisions can in many cases within a reasonable timeframe be cured by additional payment of a late fee or by other means in accordance with the applicable rules, there are situations and time frames in which non-compliance with such provisions will result in the abandonment or lapse of the patent or patent application, and the partial or complete loss of patent rights in the relevant jurisdiction. Non-compliance events that could result in abandonment or lapse of a patent or patent application include failure to respond to official actions within prescribed time limits, non-payment of fees and failure to properly legalize and submit formal documents within prescribed time limits. If we or our licensors fail to maintain the patents and patent applications covering our products and potential products or if we or our licensors otherwise allow our patents or patent applications to be abandoned or lapse, it can create opportunities for competitors to enter the market, which would hurt our competitive position and could impair our ability to successfully commercialize our products.

***We enjoy only limited geographical protection with respect to certain patents, and we may not be able to protect our intellectual property rights throughout the world.***

Filing, prosecuting and defending patents covering our technology, products and potential products in all countries throughout the world would be prohibitively expensive, and even in countries where we have sought protection for our intellectual property, such protection can be less extensive than those in the United States. The

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requirements for patentability may differ in certain countries, particularly developing countries, and the breadth of patent claims allowed can be inconsistent. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state laws in the United States. In-licensing patents covering our products and potential products in all countries throughout the world may similarly be prohibitively expensive, if such opportunities are available at all. And in-licensing or filing, prosecuting, and defending patents even in only those jurisdictions in which we develop or commercialize our products and potential products may be prohibitively expensive or impractical. Competitors may use our and our licensors' technologies in jurisdictions where we have not obtained patent protection or licensed patents to develop their own products and, further, may export otherwise infringing products to territories where we and our licensors have patent protection, but where enforcement is not as strong as that in the United States or the European Union. These products may compete with our products, and our or our licensors' patents or other intellectual property rights may not be effective or sufficient to prevent them from competing.

Many jurisdictions have compulsory licensing laws under which a patent owner may be compelled to grant licenses to third parties. In addition, many jurisdictions limit the enforceability of patents against government agencies or government contractors. In these jurisdictions, the patent owner may have limited remedies, which could materially diminish the value of such patents. If we or any of our licensors are forced to grant a license to third parties with respect to any patents relevant to our business, our competitive position may be adversely impacted, which could have a material adverse effect on our business.

Europe's planned Unified Patent Court may in particular present uncertainties for our ability to protect and enforce our patent rights against competitors in Europe. In 2012, the European Patent Package, or E.U. Patent Package, regulations were passed with the goal of providing a single pan-European Unitary Patent and a new European Unified Patent Court, or UPC, for litigation involving European patents. Implementation of the E.U. Patent Package will likely occur in the first half of 2023. Under the UPC, all European patents, including those issued prior to ratification of the European Patent Package, will by default automatically fall under the jurisdiction of the UPC. The UPC will provide our competitors with a new forum to centrally revoke our European patents and allow for the possibility of a competitor to obtain pan-European injunctions. It will be several years before we will understand the scope of patent rights that will be recognized and the strength of patent remedies that will be provided by the UPC. Under the E.U. Patent Package as currently proposed, we will have the right to opt our patents out of the UPC over the first seven years of the court's existence, but doing so may preclude us from realizing the benefits of the new unified court.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The legal system in certain foreign jurisdictions, particularly those in certain developing countries, do not favor the enforcement of patents, trade secrets and other intellectual property protection which could make it difficult for us to stop the infringement, misappropriation or other violation of our patents or other intellectual property rights, or the marketing of competing products in violation of our proprietary rights in these jurisdictions. Proceedings to enforce our patent and other intellectual property rights in foreign jurisdictions could result in substantial costs and divert our efforts and attention from other aspects of our business, could put our patents and other intellectual property rights at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a commercial advantage from the intellectual property that we develop or license. Any of the foregoing could have an adverse effect on our competitive position, business, financial condition, results of operations and prospects.

#### Patent terms may be inadequate to protect our competitive position on our products and potential products for an adequate amount of time.
The term of any individual patent depends on applicable law in the country where the patent is granted. In the United States, provided all maintenance fees are timely paid, a patent generally has a term of 20 years from its application filing date or earliest claimed non-provisional filing date. Extensions and adjustments may be available under certain circumstances. For example, upon issuance, the life of a patent can be increased based on certain delays caused by the USPTO, but this increase can be concomitantly reduced or eliminated based on certain delays caused by the patent applicant during patent prosecution. Regardless, the life of a patent and, correspondingly, the protection it affords is limited. For example, in the United States, patent term extension based on regulatory delay may be available, but only a single patent can be extended for each marketing approval, and any patent can be extended only once, for a single product, and patent protection only extends to

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the scope of the single product as approved. Laws governing the ability to obtain multiple patents from a single patent family in foreign jurisdictions also varies widely. Additionally, we may not receive an extension if we fail to exercise due diligence during the testing phase or regulatory review process, apply within applicable deadlines, fail to apply prior to expiration of relevant patents or otherwise fail to satisfy applicable requirements. Even if we, or our licensors, obtain patents covering our products and potential products, when the terms of all patents covering a product or potential product expire, our business may become subject to competition with respect to that product. As a result, our owned and licensed patent portfolio may not provide us with sufficient rights to exclude others from commercializing products similar or identical to ours for an adequate amount of time.

#### We may not be able to rely on our patents to stop certain activities by third parties.
The United States and many other countries have provisions that exempt certain activities from patent infringement. For example, in the United States, "safe harbor" provisions shield infringement activities that are reasonably related to obtaining regulatory approval for certain medicinal products. This may limit our ability to stop others from using our technology, products, and potential products. Third parties might use our patented technology, make, and sell our patented products or otherwise perform an act that infringes one or more of our patents. We may not have sufficient financial or other resources to conduct appropriate litigation or other proceedings to stop such infringing acts. This could diminish the value of our patents.

***We depend on proprietary technology licensed from others. If we lose our existing licenses or are unable to acquire or license additional proprietary rights from third parties, we may not be able to continue developing our potential products.***

We are a party to certain license agreements for certain intellectual property and proprietary technology, and we may enter into additional agreements, including license agreements, with other parties in the future that impose diligence, development and commercialization timelines, milestone payments, royalties, insurance and other obligations on us. If we fail to comply with our obligations to our licensors or any of our other current or future collaborators, our counterparties may have the right to terminate these agreements, in which event we might not be able to develop, manufacture or market any product, potential product or other technology that is covered by these agreements, which could adversely affect the value of the potential product being developed under any such agreement, or we may face claims for monetary damages or other penalties under these agreements. Termination of these agreements or reduction or elimination of our rights under these agreements may result in us having to negotiate new or reinstated agreements with less favorable terms or cause us to lose our rights under these agreements, including our rights to important intellectual property or technology. In addition, such an event may cause us to experience significant delays in the development and commercialization of our products, potential products or technologies or incur liability for damages. If any such license is terminated, our competitors or other third parties could have the freedom to seek regulatory approval of, and to market, products and technologies identical or competitive to ours, and we may be required to cease our development and commercialization of certain of our products, potential products or technologies.

We may rely on third parties from whom we license proprietary technology to file and prosecute patent applications and maintain patents and otherwise protect the intellectual property we license from them. We may have limited control over these activities or any other intellectual property that may be related to our in-licensed intellectual property. For example, we cannot be certain that such activities by these licensors will be conducted in compliance with applicable laws and regulations or will result in valid and enforceable patents and other intellectual property rights. We may have limited control over the manner in which our licensors initiate an infringement proceeding against a third-party infringer of the intellectual property rights or defend certain of the intellectual property that may be licensed to us. It is possible that the licensors' infringement proceeding, or defense activities may be less vigorous than if we conduct them ourselves.

The growth of our business may depend in part on our ability to acquire or in-license additional proprietary rights. We may be unable to acquire or in-license any relevant third-party intellectual property rights that we identify as necessary or important to our business operations. We may fail to obtain any of these licenses at a reasonable cost or on reasonable terms, if at all, which would harm our business. In that event, we may be required to expend significant time and resources to redesign our products, potential products or technologies or the methods for manufacturing them or to develop or license replacement technology, all of which may not be feasible on a technical or commercial basis. If we are unable to do so, we may be unable to develop or commercialize the affected products, potential products or technologies, which could adversely impact our business, financial condition, results of operations and prospects. Even if we are able to obtain a license under

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such intellectual property rights, any such license may be non-exclusive, which may allow our competitors access to the same technologies licensed to us.

Disputes may arise regarding intellectual property subject to a license agreement, including:

• the scope of rights granted under the license agreement and other interpretation-related issues;

• our or our licensors' obligation to obtain, maintain and defend intellectual property and to enforce intellectual property rights against third parties;

• the extent to which our technology, potential products and processes infringe, misappropriate or otherwise violate intellectual property of the licensor that is not subject to the license agreement;

• the sublicensing of patent and other intellectual property rights under our license agreements;

• our diligence, financial or other obligations under the license agreement and what activities satisfy those diligence obligations;

• the inventorship and ownership of inventions and know-how resulting from the joint creation or use of intellectual property by our licensors and us and our partners; and the priority of invention of patented technology.

In addition, the agreements under which we license intellectual property or technology from third parties are, and any such future license agreements are likely to be, complex, and certain provisions in such agreements may be susceptible to multiple interpretations. The resolution of any contract interpretation disagreement that may arise could narrow what we believe to be the scope of our rights to the relevant intellectual property or technology, or increase what we believe to be our diligence, financial or other obligations under the relevant agreement, or we may face claims for monetary damages or other penalties under these agreements, any of which could have an adverse effect on our business, financial condition, results of operations, and prospects. Moreover, if disputes over intellectual property that we have licensed or any other dispute described above related to our license agreements prevent or impair our ability to maintain our licensing arrangements on commercially acceptable terms, we may be unable to successfully develop and commercialize the affected products, potential products or technologies. Any of the foregoing could have an adverse effect on our competitive position, business, financial condition, results of operations and prospects.

#### Our technology licensed from third parties may be subject to retained rights.
Any license we may enter into could provide for the retention by the licensor of certain rights under their agreements with us, including the right to use the underlying technology for non-commercial academic and research use, to publish general scientific findings from research related to the technology, and to make customary scientific and scholarly disclosures of information relating to the technology. It is difficult to monitor whether any future licensors will limit their use of the technology or their scholarly disclosures of information relating to the technology, and we may incur substantial expenses to enforce our rights to our licensed technology in the event of misuse.

***We may become involved in lawsuits to protect or enforce our intellectual property, which could be expensive, time consuming and unsuccessful and have an adverse effect on the success of our business.***

Competitors or other third parties may infringe, misappropriate, or otherwise violate our patents or other intellectual property. If we or one of our licensors were to initiate legal proceedings against a third party to enforce a patent covering one of our products or potential products, the defendant could counterclaim that our patent is invalid or unenforceable. In patent litigation in the United States and in European countries, defendant counterclaims alleging invalidity or unenforceability are commonplace. Third parties may initiate invalidity proceedings even in the absence of infringement proceedings. Grounds for a validity challenge could be an alleged failure to meet any of several statutory requirements, for example, lack of novelty, obviousness, lack of written description, non-enablement, or lack of entitlement. Third parties might allege unenforceability of our patents in the United States because during prosecution of the patent an individual connected with such prosecution withheld relevant information or made a misleading statement. Interference or derivation proceedings provoked by third parties or brought by us or declared by the USPTO may be necessary to determine the priority of inventions with respect to our patents or patent applications. The outcome of proceedings involving assertions of invalidity and unenforceability during patent litigation is unpredictable.

If a defendant were to prevail on a legal assertion of invalidity or unenforceability, we would lose at least part, and perhaps all, of the patent protection on our products, potential products and other technology, which

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may allow third parties to commercialize our technology or products and compete directly with us, without payment to us, or could require us to obtain license rights from the prevailing party in order to be able to manufacture or commercialize our products, potential products or technologies without infringing third-party patent rights. Even if a defendant does not prevail on a legal assertion of invalidity or unenforceability, our patent claims may be construed in a manner that would limit our ability to enforce such claims against the defendant and others. Furthermore, many of our current and potential competitors may have, or may gain, the ability to dedicate substantially greater resources to enforce and defend their intellectual property rights than we can. Accordingly, despite our efforts, we may not be able to prevent third parties from infringing upon, misappropriating or otherwise violating our intellectual property rights. Thus, even if we were to ultimately prevail, or to settle at an early stage, such litigation could burden us with substantial unanticipated costs. Our patents and other intellectual property rights also will not protect our technology, products, and potential products if competitors design around our protected technology, products and potential products without infringing our patents or other intellectual property rights.

***We may not identify relevant third-party patents or may incorrectly interpret the relevance, scope or expiration of a third-party patent, which might adversely affect our ability to develop and market our technology.***

We have not performed comprehensive searches or analyses of third-party patents that may be relevant to our technology. We may not be able to conduct complete and thorough searches, we may not be able to identify all relevant third-party patents, and we may not be able to fully predict the scope of the patent claims or the expiration of relevant third-party patent applications that may issue as patents. We cannot be certain that we are aware of all third-party patents and pending applications in the United States and abroad that are relevant to or necessary for the commercialization of our technology in any jurisdiction.

The scope of a patent claim is determined by an interpretation of the law, the written disclosure in a patent and the patent's prosecution history. Our interpretation of the relevance or the scope of a patent or a pending application may be incorrect, which may negatively impact our ability to market our technology. We may incorrectly determine that our technology is not covered by a third-party patent or may incorrectly predict whether a third-party's pending application will issue with claims of relevant scope. Our determination of the expiration date of any patent in the United States or abroad that we consider relevant may be incorrect, which may negatively impact our ability to develop and market our technology. Our failure to identify and correctly interpret relevant patents may negatively impact our ability to develop and market our technology.

***Third parties may assert claims against us alleging infringement, misappropriations or other violations of their patents and proprietary rights, or we may need to become involved in lawsuits to defend or enforce our patents, either of which could result in substantial costs or loss of productivity, delay or prevent the development and commercialization of our products and potential products or prohibit our use of proprietary technology or sale of products.***

Our commercial success depends, in part, upon our ability to develop, manufacture, market and sell our products and other technologies without alleged or actual infringement, misappropriation or other violation of the patents and proprietary rights of third parties. However, our research, development and commercialization activities may be subject to claims that we infringe, misappropriate, or otherwise violate patents or other intellectual property rights owned or controlled by third parties. Litigation relating to infringement or misappropriation of patent and other intellectual property rights in the life science industry is common, including patent infringement lawsuits, interferences, derivation, and administrative law proceedings, inter partes review and post-grant review before the USPTO, as well as oppositions and similar processes in foreign jurisdictions. The various markets in which we plan to operate can be subject to litigation regarding patents and other intellectual property rights. Our competitors in both the United States and abroad, many of which have substantially greater resources and have made substantial investments in patent portfolios and competing technologies, may have applied for or obtained or may in the future apply for or obtain, patents that will prevent, limit or otherwise interfere with our ability to make, use and sell our products. In addition, many companies in intellectual property-dependent industries, including the life science industry, have employed intellectual property litigation as a means to gain an advantage over their competitors. Some claimants may have substantially greater resources than we do and may be able to sustain the costs of complex intellectual property litigation to a greater degree and for longer periods of time than we could. In addition, patent holding companies that focus solely on extracting royalties and settlements by enforcing patent rights may target us.

We may be subject to third-party claims including infringement, interference or derivation proceedings, post-grant review and inter partes review before the USPTO or similar adversarial proceedings or litigation in

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other jurisdictions. Even if we believe such claims are without merit, a court of competent jurisdiction could hold that these third-party patents are valid, enforceable and infringed, and the holders of any such patents may be able to block our ability to commercialize the applicable product or potential product unless we obtained a license under the applicable patents, or until such patents expire or are finally determined to be invalid or unenforceable. Because patent applications can take many years to issue, there may be currently pending patent applications which may later result in issued patents that our products, potential products, or technologies may infringe. In addition, third parties may obtain patents in the future and claim that use of our technologies, products and potential products infringes upon these patents. If any third-party patents were held by a court of competent jurisdiction to cover aspects of our products, potential products or technologies, the holders of any such patents may be able to prohibit our commercialization of the applicable product, potential product or technology until such patent expires or is finally determined to be invalid or unenforceable or unless we obtained a license.

In addition, defending such claims would cause us to incur substantial expenses and, if successful, could cause us to pay substantial damages if we are found to be infringing a third party's patent rights. These damages potentially include royalties, increased damages (possibly treble damages) and attorneys' fees if we are found to have infringed such rights willfully. Further, if a patent infringement suit is brought against us, our development, manufacturing, or sales activities relating to the product, potential product or technology that is the subject of the suit may be delayed or terminated, as parties making claims against us may obtain injunctive or other equitable relief. As a result of patent infringement claims, or in order to avoid potential infringement claims, we may choose to seek, or be required to seek, a license from the third party, which may require payment of substantial royalties or fees, or require us to grant a cross-license under our intellectual property rights. These licenses may not be available on reasonable terms or at all. Even if a license can be obtained on reasonable terms, the rights may be nonexclusive, which would give our competitors access to the same intellectual property rights. If we are unable to enter into a license on acceptable terms, we could be prevented from commercializing one or more of our products, potential products or technologies, or forced to modify such products or potential products, or to cease some aspect of our business operations, which could harm our business significantly. We might also be forced to redesign or modify our products, potential products or technologies so that we no longer infringe the third-party intellectual property rights, which may result in significant cost or delay to us, or which redesign or modification could be impossible or technically infeasible.

Even if we were ultimately to prevail, any of these events could require us to divert substantial financial and management resources that we would otherwise be able to devote to our business. Intellectual property litigation, regardless of its outcome, may cause negative publicity, adversely impact prospective customers, cause product shipment delays, or prohibit us from manufacturing, importing, marketing or otherwise commercializing our products, potential products, services, and technology. In addition, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential information could be compromised by disclosure during this type of litigation. There could also be public announcements of the results of hearings, motions or other interim proceedings or developments, and if securities analysts or investors view these announcements in a negative light, the price of our common stock could be adversely affected. Such litigation or proceedings could substantially increase our operating losses and reduce our resources available for development activities. We may not have sufficient financial or other resources to adequately conduct such litigation or proceedings. Some of our competitors may be able to sustain the costs of such litigation or proceedings more effectively than we can because of their substantially greater financial resources. Uncertainties resulting from the initiation and continuation of patent litigation or other proceedings could have an adverse effect on our ability to compete in the marketplace.

***Our trade secrets may be misappropriated or disclosed, and confidentiality agreements with employees and third parties may not adequately prevent disclosure of trade secrets and protect other proprietary information.***

We consider proprietary trade secrets, confidential know-how and unpatented know-how to be important to our business. We may rely on trade secrets and confidential know-how to protect our technology, especially where patent protection is believed by us to be of limited value. However, trade secrets and confidential know-how are difficult to protect, and we have limited control over the protection of trade secrets and confidential know-how used by our licensors, collaborators, and suppliers.

To protect this type of information against disclosure or appropriation by competitors, our policy is to require our employees, consultants, contractors, and advisors to enter into confidentiality agreements and, if applicable, material transfer agreements, consulting agreements or other similar agreements with us prior to beginning research or disclosing proprietary information. These agreements typically limit the rights of the third

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parties to use or disclose our confidential information, including our trade secrets. However, current or former employees, consultants, contractors and advisers may unintentionally or willfully disclose our confidential information to competitors, and confidentiality agreements may not provide an adequate remedy in the event of unauthorized disclosure of confidential information. For example, one of our contractors mistakenly posted the API credentials of some our commercial production and business environments in a public workspace. As a result, there was the potential for an unauthorized third party with knowledge of how to use such API credentials to gain access to our confidential information. While we reported the incident and notified those that could have been affected, we have no evidence to suggest that our systems or any such information was accessed by any unauthorized third party, but we cannot guarantee that such incidents will not have an impact in the future. The need to share trade secrets and other confidential information increases the risk that such trade secrets become known by our competitors, are inadvertently incorporated into the technology of others, or are disclosed or used in violation of these agreements. Given that our competitive position is based, in part, on our know-how and trade secrets, a competitor's discovery of our trade secrets or other unauthorized use or disclosure would impair our competitive position and may have an adverse effect on our business and results of operations. Monitoring unauthorized uses and disclosures is difficult, and we do not know whether the steps we have taken to protect our proprietary technologies will be effective. Enforcing a claim that a third party obtained illegally and is using trade secrets and/or confidential know-how is expensive, time consuming and unpredictable, and the enforceability of confidentiality agreements may vary from jurisdiction to jurisdiction. Courts outside the United States are sometimes less willing to protect proprietary information, technology and know-how. Furthermore, if any of our trade secrets and confidential know-how were to be lawfully obtained or independently developed by a competitor or other third party, we would have no right to prevent them from using that technology or information to compete with us, and our competitive position would be harmed.

***We may be subject to claims that our employees, consultants, or independent contractors have wrongfully used or disclosed confidential information of their former employers or other third parties, and we may be subject to claims asserting ownership of what we regard as our own intellectual property.***

We do and may employ individuals who were previously employed at universities or other life science companies, including our licensors, competitors, or potential competitors. Although we seek to protect our ownership of intellectual property rights by ensuring that our agreements with our employees, consultants, collaborators, independent contractors and other third parties with whom we do business include provisions requiring such parties to assign rights in inventions to us and to not use the know-how or confidential information of their former employer or other third parties, we may be subject to claims that we or our employees, consultants, collaborators or independent contractors have inadvertently or otherwise used or disclosed know-how or confidential information of their former employers or other third parties. We may also be subject to claims that former employers or other third parties have an ownership interest in our patents. Litigation may be necessary to defend against these claims. There is no guarantee of success in defending these claims, and if we fail in defending any such claims, in addition to paying monetary damages, we may lose valuable personnel or intellectual property rights, such as exclusive ownership of, or right to use, valuable intellectual property, which could result in customers seeking other sources for the technology, or in ceasing from doing business with us. Such intellectual property rights could be awarded to a third party, and we could be required to obtain a license from such third party to commercialize our technology or potential product. Such a license may not be available on commercially reasonable terms or at all. Even if we are successful, litigation could result in substantial cost and reputational loss and be a distraction to our management and other employees. Moreover, any such litigation or the threat thereof may adversely affect our reputation, our ability to form strategic alliances, engage with scientific advisors or hire employees or consultants, each of which would have an adverse effect on our business, financial condition, and results of operations.

In addition, while we typically require our employees, consultants and contractors who may be involved in the conception or development of intellectual property to execute agreements assigning such intellectual property to us, we may be unsuccessful in executing such an agreement with each party who, in fact, conceives or develops intellectual property that we regard as our own. Furthermore, even when we obtain agreements assigning intellectual property to us, the assignment of intellectual property rights may not be self-executing, or the assignment agreements may be breached, each of which may result in claims by or against us related to the ownership of such intellectual property to determine the ownership of what we regard as our intellectual property. In addition, individuals executing agreements with us may have pre-existing or competing obligations to a third party, such as an academic institution, and thus an agreement with us may be ineffective in perfecting ownership of inventions developed by that individual. If we fail in prosecuting or defending any such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights. Even if we are

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successful in prosecuting or defending any of the foregoing claims, litigation could result in substantial costs and be a distraction to our management and employees.

***If our trademarks and trade names are not adequately protected, we may not be able to build name recognition in our markets of interest and our business may be adversely affected.***

If our trademarks and trade names are not adequately protected, we may not be able to build name recognition in our markets of interest and our business may be adversely affected. We currently own issued trademark registrations and have trademark applications pending, any of which may be the subject of a governmental or third-party objection, which could prevent the registration or maintenance of the same. We cannot assure you that any currently pending trademark applications or any trademark applications we may file in the future will be approved. During trademark registration proceedings, we may receive rejections and although we are given an opportunity to respond to those rejections, we may be unable to overcome such rejections. In addition, in proceedings before the USPTO and in proceedings before comparable agencies in many foreign jurisdictions, third parties are given an opportunity to oppose pending trademark applications and to seek to cancel registered trademarks. Opposition or cancellation proceedings may be filed against our trademarks, and our trademarks may not survive such proceedings. If we are unsuccessful in obtaining trademark protection for our primary brand, we may be required to change our brand name, which could adversely affect our business.

We may not be able to protect our rights to these trademarks and trade names, which we need to build name recognition among potential partners or customers in our markets of interest. At times, competitors may adopt trade names or trademarks similar to ours, thereby impeding our ability to build brand identity and possibly leading to market confusion. In addition, there could be potential trade name or trademark infringement claims brought by owners of other registered trademarks or trademarks that incorporate variations of our unregistered trademarks or trade names. Over the long term, if we are unable to successfully register our trademarks and trade names and establish name recognition based on our trademarks and trade names, then we may not be able to compete effectively, and our business may be adversely affected. Our efforts to enforce or protect our proprietary rights related to trademarks, trade secrets, domain names, copyrights or other intellectual property may be ineffective and could result in substantial costs and diversion of resources and could adversely impact our financial condition or results of operations.

#### Intellectual property rights do not necessarily protect us from all potential threats.
The degree of future protection afforded by our intellectual property rights is uncertain because intellectual property rights have limitations and may not adequately protect our business or permit us to maintain our competitive advantage. For example:

• others may be able to make products that are similar to any products and potential products we may develop or utilize similar technology that are not covered by the claims of the patents that we own or license now or in the future;

• we, our licensors or current or future collaboration partners might not have been the first to make the inventions covered by the issued patent or pending patent application that we license or may own in the future;

• we or our licensors or current or future collaboration partners, might not have been the first to file patent applications covering certain of our or their inventions;

• others may independently develop similar or alternative technologies or duplicate any of our technologies without infringing, misappropriating or otherwise violating our owned or licensed intellectual property rights;

• it is possible that our pending owned or licensed patent applications or those that we may own or license in the future will not lead to issued patents;

• issued patents that we hold rights to may not provide us with a competitive advantage, or may be held invalid or unenforceable, including as a result of legal challenges by our competitors or other third parties;

• our competitors or other third parties might conduct research and development activities in jurisdictions where we do not have patent rights and then use the information learned from such activities to develop competitive products for sale in our major commercial markets;

• we may not develop additional proprietary technologies that are patentable;

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• the patents of others may harm our business; and

• we may choose not to file a patent for certain trade secrets or know-how, and a third party may subsequently file a patent covering such intellectual property.

Should any of these events occur, they could have an adverse effect on our competitive position, business, financial condition, or results of operations.

#### Risks Relating to Our ADSs

#### The price of our ADSs may be volatile and may fluctuate due to factors beyond our control.
The initial public offering price for the ADSs was determined through negotiations between the underwriters and us. If you purchased at the initial public offering price, you may not be able to resell those ADSs at or above that price. The market price of our ADSs may fluctuate significantly due to a variety of factors, including:

• operating results that vary from our financial guidance or the expectations of securities analysts and investors;

• the financial performance of the major end markets that we target;

• the operating and securities price performance of companies that investors consider to be comparable to us;

• announcements of strategic developments, acquisitions and other material events by us or our competitors;

• failure to meet or exceed financial estimates and projections of the investment community or that we provide to the public;

• issuance of new or updated research or reports by securities analysts;

• changes in government regulations;

• financing or other corporate transactions;

• the loss of any of our key personnel;

• sales of our ADSs or ordinary shares by us, our executive officers and board members, holders of our ADSs or our shareholders in the future;

• price and volume fluctuations in the overall stock market, including as a result of trends in the economy as a whole;

• other events and factors, many of which are beyond our control; and

• the delisting of our ordinary shares from trading on AIM which was effective from December 14, 2022.

These and other market and industry factors may cause the market price and demand for our ADSs to fluctuate substantially, regardless of our actual operating performance, which may limit or prevent investors from readily selling their ADSs and may otherwise negatively affect the liquidity of our ADSs. In addition, the stock market in general, and pharmaceutical, biotechnology and diagnostics companies, in particular, have experienced extreme price and volume fluctuations that have often been unrelated or disproportionate to the operating performance of these companies. In the past, when the market price of a stock has been volatile, holders of that stock have sometimes instituted securities class action litigation against the issuer. If any of the holders of our ADSs were to bring such a lawsuit against us, we could incur substantial costs defending the lawsuit and the attention of our senior management would be diverted from the operation of our business. Any adverse determination in litigation could also subject us to significant liabilities.

***We cannot assure you that a market for our ADSs will be sustained to provide adequate liquidity, and public trading markets may experience volatility. Investors may not be able to resell their ADSs at or above the price they pay.***

We cannot assure you that an active trading market will be sustained for our ADSs. If a market is not sustained, it may be difficult for you to sell your ADSs. Public trading markets may also experience volatility and disruption. This may affect the pricing of the ADSs in the secondary market, the transparency and availability of

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trading prices, the liquidity of the ADSs and the extent of regulation applicable to us. We cannot predict the prices at which our ADSs will trade. It is possible that, in future quarters, our operating results may be below the expectations of securities analysts and investors. As a result of these and other factors, the price of our ADSs may decline.

***If securities or industry analysts initiate coverage and publish inaccurate or unfavorable research about our business, the price of our ADSs and our trading volume could decline.***

The trading market for our ADSs will depend in part on the research and reports that securities or industry analysts publish about us or our business. In the event securities or industry analysts initiate coverage, or if one or more of the analysts who cover us downgrade our ADSs or publish inaccurate or unfavorable research about our business, the price of our ADSs would likely decline. If one or more of these analysts cease coverage of us or fail to publish reports on us regularly, demand for our ADSs could decrease, which might cause the price of our ADSs and trading volume to decline.

#### There may be significant price volatility associated with ADSs representing our ordinary shares or lower liquidity given the AIM delisting.
Currently, our ADSs are trading on Nasdaq. Our ordinary shares were also listed on the AIM market of the London Stock Exchange until December 14, 2022, when the shares were delisted from AIM in an effort to enhance liquidity of trading by combining all transactions on Nasdaq and to reduce costs through removing duplicative listing and compliance fees. Following the AIM delisting, there is no trading market for our ordinary shares. As of December 31, 2022, 213,886,386 of our ordinary shares were converted into ADSs. Given that only those shares outstanding in the form of ADSs are tradeable on Nasdaq, the trading volume of our ADSs is uncertain and may be volatile, which may impact price volatility.

***We are a foreign private issuer and, as a result, we are not subject to U.S. proxy rules and are subject to Exchange Act reporting obligations that, to some extent, are more lenient and less frequent than those of a U.S. domestic public company.***

We report under the Exchange Act as a non-U.S. company with foreign private issuer status. Because we qualify as a foreign private issuer under the Exchange Act, we are exempt from certain provisions of the Exchange Act that are applicable to U.S. domestic public companies, including (i) the sections of the Exchange Act regulating the solicitation of proxies, consents or authorizations in respect of a security registered under the Exchange Act; (ii) the sections of the Exchange Act requiring insiders to file public reports of their stock ownership and trading activities and liability for insiders who profit from trades made in a short period of time; and (iii) the rules under the Exchange Act requiring the filing with the SEC of quarterly reports on Form 10-Q containing unaudited financial and other specified information, or current reports on Form 8-K, upon the occurrence of specified significant events. In addition, foreign private issuers are not required to file their annual report on Form 20-F until four months after the end of each year, while U.S. domestic issuers that are accelerated filers are required to file their annual report on Form 10-K within 60 days after the end of each year. Foreign private issuers also are exempt from Regulation Fair Disclosure, aimed at preventing issuers from making selective disclosures of material information. As a result of the above, our shareholders may not have the same protections afforded to shareholders of companies that are not foreign private issuers, some investors may find the ADSs less attractive, and there may be a less active trading market for the ADSs.

***As a foreign private issuer, we are permitted to adopt certain home country practices in relation to corporate governance matters that differ significantly from Nasdaq corporate governance listing standards. These practices may afford less protection to shareholders than they would enjoy if we complied fully with Nasdaq corporate governance listing standards.***

As a foreign private issuer listed on Nasdaq, we are subject to corporate governance listing standards. However, Nasdaq rules permit a foreign private issuer like us to follow the corporate governance practices of its home country in lieu of certain Nasdaq corporate governance listing standards, provided that we disclose which requirements that we have not complied with in any year and confirm the U.K. corporate governance practices we have complied with. Certain corporate governance practices in the United Kingdom, which is our home country, may differ significantly from Nasdaq corporate governance listing standards. For example, neither the laws of the United Kingdom nor our articles of association ("Articles of Association") have quorum requirements similar to Nasdaq Rule 5602(c). Although we voluntarily comply with the higher corporate governance standards of the U.K. Corporate Governance Code, we could include non-independent directors as members of our

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nomination and remuneration committee, and our independent directors would not necessarily hold regularly scheduled meetings at which only independent directors are present. We may in the future elect to follow home country practices in the United Kingdom with regard to other matters. Therefore, our shareholders may be afforded less protection than they otherwise would have under Nasdaq corporate governance listing standards applicable to U.S. domestic issuers. See Item 6.C. "Directors, Senior Management and Employees—Board Practices."

***We may lose our foreign private issuer status, which would then require us to comply with the Exchange Act's domestic reporting regime and cause us to incur significant legal, accounting, and other expenses.***

As discussed above, we are a foreign private issuer, and therefore we are not required to comply with all of the periodic disclosure and current reporting requirements of the Exchange Act applicable to U.S. domestic issuers. The determination of foreign private issuer status is made annually on the last business day of an issuer's most recently completed second quarter, and, accordingly, the next determination will be made with respect to us on June 30, 2023. In order to maintain our current status as a foreign private issuer, either (a) a majority of our ordinary shares must be either directly or indirectly owned of record by non-residents of the United States or (b)(i) a majority of our executive officers or directors cannot be U.S. citizens or residents, (ii) more than 50% of our assets must be located outside the United States and (iii) our business must be administered principally outside the United States. If we lose our status as a foreign private issuer, we would be required to comply with the Exchange Act reporting and other requirements applicable to U.S. domestic issuers, including the requirement to prepare our financial statements in accordance with U.S. generally accepted accounting principles, which are more detailed and extensive than the requirements for foreign private issuers. We may also be required to make changes in our corporate governance practices in accordance with various SEC and Nasdaq rules. The regulatory and compliance costs to us under U.S. securities laws if we are required to comply with the reporting requirements applicable to a U.S. domestic issuer may be significantly higher than the cost we would incur as a foreign private issuer. As a result, we expect that a loss of foreign private issuer status would increase our legal and financial compliance costs and would make some activities highly time consuming and costly. If we lose foreign private issuer status and are unable to comply with the reporting requirements applicable to a U.S. domestic issuer by the applicable deadlines, we would not be in compliance with applicable SEC rules or the rules of the Nasdaq, which could cause investors to lose confidence in our public reports and could have a material adverse effect on the trading price of our ADSs. We also expect that if we were required to comply with the rules and regulations applicable to U.S. domestic issuers, it would make it more difficult and expensive for us to obtain director and officer liability insurance, and we may be required to accept reduced coverage or incur substantially higher costs to obtain coverage. These rules and regulations could also make it more difficult for us to attract and retain qualified members of our board of directors.

***Failure to comply with requirements to design, implement and maintain effective internal control over financial reporting could have a material adverse effect on our business. We have identified material weaknesses in our internal control over financial reporting.***

As a public company in the United States, we are required to evaluate our internal control over financial reporting pursuant to Section 404 of the Sarbanes-Oxley Act. We must maintain effective internal control over financial reporting in order to report in an accurate and timely manner the results of our operations and financial condition. The process of designing and implementing effective internal control over financial reporting is a continuous effort that requires us to anticipate and react to changes in our business and the economic and regulatory environments and to expend significant resources to maintain a system of internal control that is adequate to satisfy our reporting obligations as a public company. If we are unable to maintain appropriate internal financial reporting controls and procedures, it could cause us to fail to meet our reporting obligations on a timely basis, result in material misstatements in our consolidated financial statements and harm our results of operations. In addition, we are required, pursuant to Section 404(a), to furnish a report by management on, among other things, the effectiveness of our internal control over financial reporting. This assessment must include disclosure of any material weaknesses identified by our management in our internal control over financial reporting. The rules governing the standards that must be met for our management to assess our internal control over financial reporting are complex and require significant documentation, testing and possible remediation. Testing and maintaining internal controls may divert our management's attention from other matters that are important to our business.

In connection with the implementation of the necessary procedures and practices related to our internal control over financial reporting, we may identify deficiencies that we may not be able to remediate.

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For the year ended December 31, 2021, we disclosed six material weakness in our internal control over financial reporting. As of December 31, 2022, three of those material weaknesses remain: Inventory (first disclosed in our Annual Report on Form 20-F in 2021), Revenue and Accounts Receivable (first disclosed in our Annual Report on Form 20-F in 2021), and Information Technology ("IT") General Controls ("ITGC"), including Adminsite (an in house developed sales order processing and finished goods inventory system) (first disclosed in our Registration Statement Form F-1 in 2020). See Item 15. "Controls and Procedures" for more information.

We cannot give assurance that the measures we are taking to remediate the aforementioned material weaknesses will be sufficient or that they will prevent future material weaknesses. As management continues to evaluate and work to improve our internal control over financial reporting, we may determine it necessary to take additional measures or modify the remediation measures. Obstacles including complexities in our operational environment, challenges in fully transitioning to the Oracle Cloud ERP system globally, and resource constraints to complete an effective risk assessment process and implement controls in a timely manner may require further remediation efforts, all of which individually and in aggregate may increase implementation time.

With respect to (i) Inventory, we plan to implement measures intended to improve incorporation of stock data and controls into the Oracle Cloud ERP environment, continuing to evaluate and refine the design, implementation, and documentation of the internal controls to help ensure controls address the relevant risks, and continue training to reenforce expectations regarding appropriate evidence of the performance of the controls, including proper evidence over the completeness and accuracy of data within key reports leveraged in the execution of internal controls; (ii) Revenue and Accounts Receivable, we plan to implement and roll out the final key pieces of our Oracle Cloud ERP system globally, specifically covering pricing, promotions, and discounts, and conduct a review of the current internal controls within this area to ensure the controls address the relevant risks and are properly designed and implement controls which incorporate the new process imposed by the system, including new reports; and (iii) ITGC, including Adminsite (an in house developed sales order processing and finished goods inventory system), we plan to enhance privileged access and change management reviews, globally implement and roll out the final key pieces of our Oracle Cloud ERP system (including those covering pricing, promotions, and discounts), to enable elimination of Adminsite as one of our information systems relevant to preparation of our financial statements, and design and implement new ITGC controls for the new Oracle Cloud ERP system components. See Item 15. "Controls and Procedures" for more information.

In undertaking complex system implementations across the inventory, revenue and accounts receivable, and our information technology and information technology general controls, we may have interruptions in our existing operational processes impacting critical data and information from being captured or reported on a timely basis if at all, which could have a material adverse effect on our business, reputation, results of operations. Furthermore, the operation of existing controls over financial reporting may be temporarily impacted as we implement new processes and controls. For example, it may take longer than anticipated to deploy the required integrations between various system components. During new system deployment initial data quality may be insufficient to allow the effective operation of internal controls over financial reporting. The development of system generated reports required for the operation of such controls may take longer than anticipated. Relatedly, as the deployment of new systems and processes will be phased in through the coming year and, as a result, we may not be able to operate the complete suite of internal controls over financial reporting, in particular IT general controls, across the whole of the year, if at all.

If our remedial measures are insufficient to address any of the material weaknesses we have identified, these will continue to be disclosed as material weaknesses. Additionally, if there is a change in conditions, or the degree of compliance with policies or procedure deteriorates, internal review of our internal control over financial reporting or the subsequent testing by our independent registered public accounting firm may reveal other deficiencies in our internal controls over financial reporting that are deemed material weaknesses. If this occurs, our consolidated financial statements or disclosures may contain material misstatements and we could be required to restate our financial results. In addition, if we are unable to successfully remediate any of these material weaknesses, we may not be able to conclude on an ongoing basis that we have effective internal control over financial reporting or our independent registered public accounting firm may not in future issue an unqualified opinion, each of which could lead to investors losing confidence in our reported financial information, which could have a material adverse effect on the trading price of our ADSs, and we may be unable to maintain compliance with applicable stock exchange listing requirements.

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***We continue to incur increased costs as a result of operating as a non-U.S. public company in the United States and loss of our status as an emerging growth company as of December 31, 2021, and our management is required to devote substantial time to new compliance initiatives and corporate governance practices.***

As a non-U.S. public company in the United States, we incur significant legal, accounting, and other expenses, and as a result of our ceasing to qualify as an emerging growth company as of December 31, 2021. The Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform and Consumer Protection Act, the listing requirements of Nasdaq and other applicable securities rules and regulations impose various requirements on non-U.S. reporting public companies, including the establishment and maintenance of effective disclosure and financial controls and corporate governance practices. Our management and other personnel devote a substantial amount of time to these compliance initiatives. Moreover, these rules and regulations have increased our legal and financial compliance costs and have made some activities more time consuming and costly. Moreover, these rules and regulations may make it more difficult and more expensive for us to obtain director and officer liability insurance.

These rules and regulations are often subject to varying interpretations, in many cases due to their lack of specificity, and, as a result, their application in practice may evolve over time as new guidance is provided by regulatory and governing bodies. This could result in continuing uncertainty regarding compliance matters and higher costs necessitated by ongoing revisions to disclosure and governance practices.

Pursuant to Section 404 of the Sarbanes-Oxley Act of 2002, we are required to furnish a report by our senior management on our internal control over financial reporting and are also required to include an attestation report on internal control over financial reporting issued by our independent registered public accounting firm.

As of December 31, 2021, we no longer qualified as an emerging growth company. To achieve compliance with Section 404 of the Sarbanes-Oxley Act of 2002 and as part of our efforts to remediate the material weaknesses we have identified, we have had to dedicate internal resources, engage outside consultants and adopt a detailed work plan to evaluate and document the adequacy of internal control over financial reporting, continue steps to improve control processes as appropriate, validate through testing that controls are functioning as documented and implement a continuous reporting and improvement process for internal control over financial reporting. Despite our efforts, we have not been able to conclude that our internal control over financial reporting is effective as required by Section 404 of the Sarbanes-Oxley Act of 2002. Any failure to implement and maintain effective remediations to our internal control over financial reporting and to mitigate the identified material weaknesses could continue to adversely affect the results of periodic management evaluations and annual independent registered public accounting firm attestation reports regarding the effectiveness of our internal control over financial reporting. If we identify any additional material weaknesses, or we are unable to remediate the existing material weaknesses, it could result in an adverse reaction in the financial markets due to a loss of confidence in the reliability of our financial statements. As a result, the market price of our shares could be negatively affected, and we could become subject to investigations by the SEC or other regulatory authorities, which could require additional financial and management resources.

***A significant portion of our total issued and outstanding ADSs are eligible to be sold into the market, which could cause the market price of our ADSs to drop significantly, even if our business is doing well.***

Sales of a substantial number of our ADSs in the public market, or the perception in the market that the holders of a large number of ADSs intend to sell, could reduce the market price of our ADSs. As of December 31, 2022, we had 229,309,701 ordinary shares (including those represented by ADSs) outstanding. All of our ADSs are freely tradable without restriction under the Securities Act, except for any of our ADSs that may be held by our directors, executive officers and other affiliates, as that term is defined in the Securities Act, which will be control or restricted securities under the Securities Act. Control or restricted securities may not be sold in the public market unless the sale is registered under the Securities Act or an exemption from registration is available.

In the future, we may also issue additional securities if we need to raise capital or make acquisitions, which could constitute a material portion of our then-issued and outstanding ADSs.

#### If we issue shares in future financings, shareholders may experience dilution and, as a result, our ADS price may decline.
We may from time-to-time issue additional shares at a discount from the trading price of our shares. As a result, our shareholders would experience immediate dilution upon the issuance of any of our shares at such

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discount. In addition, as opportunities present themselves, we may enter into financing or similar arrangements in the future, including the issuance of debt or equity securities. If we issue shares or securities convertible into shares of our share capital, our shareholders would experience additional dilution and, as a result, our ADS price may decline.

***Because we may not pay any cash dividends on our ADSs in the future, capital appreciation, if any, may be the sole source of gains and our ADS holders may never receive a return on your investment.***

Under current U.K. law, a company's accumulated realized profits, so far as not previously utilized by distribution or capitalization, must exceed its accumulated realized losses so far as not previously written off in a reduction or reorganization of capital duly made (on a non-consolidated basis), before dividends can be paid. Therefore, we must have distributable profits before issuing a dividend. In the future, our board of directors may decide, in its discretion, whether dividends may be declared and paid. As a result, capital appreciation, if any, on our ADSs may be the sole source of gains for ADS holders, and such ADS holders will suffer a loss on their investment if an ADS holder is unable to sell the ADSs that the ADS holder holds at or above the price the ADS holder acquired the ADSs the ADS holder holds. See Item 8.A. "Financial Information—Consolidated Statements and Other Financial Information—Dividend Policy."

#### Our ADS holders may not be able to exercise the right to vote their ordinary shares underlying the ADSs that the ADS holder holds.
ADS holders may only exercise voting rights with respect to the ordinary shares underlying their respective ADSs in accordance with the provisions of the deposit agreement, which provides that a holder may vote the ordinary shares underlying any ADSs for any particular matter to be voted on by our shareholders either by withdrawing the ordinary shares underlying the ADSs or, to the extent permitted by applicable law and as permitted by the depositary, by requesting a temporary registration as shareholder and authorizing the depositary to act as proxy. However, an ADS holder may not know about the meeting far enough in advance to withdraw those ordinary shares, and after such a withdrawal you would no longer hold ADSs, but rather would directly hold the underlying ordinary shares. An ADS holder also may not know about the meeting far enough in advance to request a temporary registration.

The depositary will try, as far as practical, to vote the ordinary shares underlying the ADSs as instructed by the ADS holders. In such an instance, if we ask for your instructions, the depositary, upon timely notice from us, will notify you of the upcoming vote and arrange to deliver our voting materials to our ADS holders. We cannot guarantee that ADS holders will receive the voting materials in time to ensure that our ADS holders can instruct the depositary to vote such ADS holder's ordinary shares or to withdraw such ADS holder's ordinary shares so that such holder can vote them directly. If the depositary does not receive timely voting instructions from an ADS holder, it may give a discretionary proxy to a person designated by us to vote the ordinary shares underlying the ADS holder's ADSs; provided, however, that no such discretionary proxy shall be given with respect to any matter to be voted upon as to which we inform the depositary that (i) we do not wish such proxy to be given, (ii) substantial opposition exists, or (iii) the rights of holders of ordinary shares may be adversely affected. Voting instructions may be given only in respect of a number of ADSs representing an integral number of ordinary shares or other deposited securities. In addition, the depositary and its agents are not responsible for failing to carry out voting instructions or for the manner of carrying out voting instructions. This means that an ADS holder may not be able to exercise any right to vote that the holder may have with respect to the underlying ordinary shares, and there may be nothing an ADS holder can do if the ordinary shares underlying the ADS holder's ADSs are not voted as such holder requested. In addition, the depositary is only required to notify ADS holders of any particular vote if it receives notice from us in advance of the scheduled meeting.

***Holders of the ADSs will not directly hold our ordinary shares, and as such will not be able to exercise the pre-emptive subscription rights related to the ordinary shares that they represent and may suffer dilution of their equity holding in the event of future issuances of our ordinary shares.***

English law generally provides shareholders with preemptive rights when new shares are issued for cash. Shareholders' preemptive subscription rights, in the event of issuances of ordinary shares against cash payment, may be disapplied by a special resolution of the shareholders at a general meeting of our shareholders. On November 13, 2019, our shareholders approved the exclusion of preemptive rights, with such authority expiring at the conclusion of our next annual general meeting or, if earlier, the date 15 months after the date of approval. Such exclusion will need to be renewed upon expiration on the conclusion of our next annual general meeting to remain effective but may be sought more frequently for additional five-year terms (or any shorter period). The absence of preemptive rights for existing equity holders may cause dilution to such holders.

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Furthermore, the ADS holders would not be entitled, even if such rights accrued to our shareholders in any given instance, to receive such preemptive subscription rights related to the ordinary shares that they represent.

Rather, the depositary is required to endeavor to sell any such subscription rights that may accrue to the ordinary shares underlying the ADSs and to remit the net proceeds therefrom to the ADS holders pro rata. In addition, if the depositary is unable to sell rights, the depositary will allow the rights to lapse, in which case you will receive no value for these rights. Further, if we offer holders of our ordinary shares the option to receive dividends in either cash or ordinary shares, under the deposit agreement, ADS holders will not be permitted to elect to receive dividends in ordinary shares or cash but will receive whichever option we provide as a default to shareholders who fail to make such an election.

***Purchasers of ADSs may not receive distributions on our ordinary shares in the form of ADSs or any value for them if it is illegal or impractical to make them available to holders of ADSs.***

The depositary for our ADSs has agreed to pay to purchasers of ADSs the cash dividends or other distributions it or the custodian receives on our ordinary shares or other deposited securities after deducting its fees and expenses. Purchasers of our ADSs will receive these distributions in proportion to the number of our ordinary shares their ADSs represent. However, in accordance with the limitations set forth in the deposit agreement, it may be unlawful or impractical to make a distribution available to holders of ADSs. We have no obligation to take any other action to permit the distribution of our ADSs, ordinary shares, rights, or anything else to holders of our ADSs, which means that purchasers of ADSs may not receive the distributions we make on our ordinary shares or any value from them if it is unlawful or impractical to make them available to them. These restrictions may have a material adverse effect on the value of a purchaser's ADSs.

#### Purchasers of ADSs may be subject to limitations on transfer of their ADSs.
ADSs are transferable on the books of the depositary. However, the depositary may close its transfer books at any time or from time to time when it deems expedient in connection with the performance of its duties. In addition, the depositary may refuse to deliver, transfer or register transfers of ADSs generally when our books or the books of the depositary are closed, or at any time if we or the depositary deems it advisable to do so because of any requirement of law or of any government or governmental body, or under any provision of the deposit agreement, or for any other reason in accordance with the terms of the deposit agreement.

***ADS holders may not be entitled to a jury trial with respect to claims arising under the deposit agreement, which could result in less favorable outcomes to the plaintiff(s) in any such action.***

The deposit agreement governing the ADSs representing our ordinary shares provides that, to the fullest extent permitted by applicable law, holders and beneficial owners of ADSs irrevocably waive the right to a jury trial of any claim that they may have against us or the depositary arising from or relating to our ordinary shares, our ADSs or the deposit agreement, including any claim under the U.S. federal securities laws. The waiver continues to apply to claims that arise during the period when a holder holds the ADSs, even if the ADS holder subsequently withdraws the underlying ordinary shares.

However, you will not be deemed, by agreeing to the terms of the deposit agreement, to have waived our or the depositary's compliance with U.S. federal securities laws and the rules and regulations promulgated thereunder. In fact, you cannot waive our or the depositary's compliance with U.S. federal securities laws and the rules and regulations promulgated thereunder. If we or the depositary opposed a demand for jury trial relying on above-mentioned jury trial waiver, it is up to the court to determine whether such waiver was enforceable considering the facts and circumstances of that case in accordance with the applicable state and federal law.

If this jury trial waiver provision is prohibited by applicable law, an action could nevertheless proceed under the terms of the deposit agreement with a jury trial. To our knowledge, the enforceability of a jury trial waiver under the federal securities laws has not been finally adjudicated by a federal court or by the United States Supreme Court. Nonetheless, we believe that a jury trial waiver provision is generally enforceable under the laws of the State of New York, which govern the deposit agreement, by a federal or state court in the City of New York. In determining whether to enforce a jury trial waiver provision, New York courts will consider whether the visibility of the jury trial waiver provision within the agreement is sufficiently prominent such that a party has knowingly waived any right to trial by jury. We believe that this is the case with respect to the deposit agreement and the ADSs. In addition, New York courts will not enforce a jury trial waiver provision in order to bar a viable setoff or counterclaim sounding in fraud or one which is based upon a creditor's negligence in failing to liquidate

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collateral upon a guarantor's demand, or in the case of an intentional tort claim, none of which we believe are applicable in the case of the deposit agreement or the ADSs. If an ADS holder or any other ADS holders or beneficial owners of ADSs bring a claim against us or the depositary relating to the matters arising under the deposit agreement or our ADSs, including claims under federal securities laws, such an ADS holder or such other ADS holder or beneficial owner may not have the right to a jury trial regarding such claims, which may limit and discourage lawsuits against us or the depositary. If a lawsuit is brought against us or the depositary according to the deposit agreement, it may be heard only by a judge or justice of the applicable trial court, which would be conducted according to different civil procedures and may have different outcomes compared to that of a jury trial, including results that could be less favorable to the plaintiff(s) in any such action.

Moreover, as the jury trial waiver relates to claims arising out of or relating to the ADSs or the deposit agreement, we believe that, as a matter of construction of the clause, the waiver would likely continue to apply to ADS holders who withdraw the ordinary shares from the ADS facility with respect to claims arising before the cancellation of the ADSs and the withdrawal of the ordinary shares, and the waiver would most likely not apply to ADS holders who subsequently withdraw the ordinary shares represented by ADSs from the ADS facility with respect to claims arising after the withdrawal. However, to our knowledge, there has been no case law on the applicability of the jury trial waiver to ADS holders who withdraw the ordinary shares represented by the ADSs from the ADS facility.

***ADS holders have limited choice of forum, which could limit an ADS holder's ability to obtain a favorable judicial forum for complaints against us, the depositary or our respective directors, officers or employees.***

The deposit agreement governing our ADSs provides that, (i) the deposit agreement and the ADSs will be interpreted in accordance with the laws of the State of New York, and (ii) as an owner of ADSs, the ADS holder irrevocably agrees that any legal action arising out of the deposit agreement and the ADSs involving us or the depositary may only be instituted in a state or federal court in the city of New York. Any person or entity purchasing or otherwise acquiring any our ADSs, whether by transfer, sale, operation of law or otherwise, shall be deemed to have notice of and have irrevocably agreed and consented to these provisions. This choice of forum provision may increase the ADS holder's cost and limit the ADS holder's ability to bring a claim in a judicial forum that the ADS holder finds favorable for disputes with us, the depositary or our and the depositary's respective directors, officers, or employees, which may discourage such lawsuits against us, the depositary and our and the depositary's respective directors, officers or employees. However, it is possible that a court could find such choice of forum provisions to be inapplicable or unenforceable. The enforceability of similar choice of forum provisions has been challenged in legal proceedings. It is possible that a court could find this type of provisions to be inapplicable or unenforceable.

#### The rights of our shareholders may differ from the rights typically offered to shareholders of a U.S. corporation.
We are incorporated under English law. The rights of holders of ordinary shares and, therefore, certain of the rights of holders of ADSs, are governed by English law, including the provisions of the U.K. Companies Act 2006 (the "Companies Act 2006"), and by our Articles of Association. These rights differ in certain respects from the rights of shareholders in typical U.S. corporations. See Exhibit 2.3 to this Annual Report for a description of the principal differences between the provisions of the Companies Act 2006 applicable to us and, for example, the Delaware General Corporation Law relating to shareholders' rights and protections.

#### Claims of U.S. civil liabilities may not be enforceable against us.
We are incorporated under English law. The majority of our assets are located outside the United States. The majority of our management and board of directors reside outside the United States. As a result, it may not be possible for investors to effect service of process within the United States upon such persons or to enforce

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judgments obtained in U.S. courts against them or us, including judgments predicated upon the civil liability provisions of the U.S. federal securities laws.

The United States and the United Kingdom do not currently have a treaty providing for recognition and enforcement of judgments (other than arbitration awards) in civil and commercial matters. Consequently, a final judgment for payment given by a court in the United States, whether or not predicated solely upon U.S. securities laws, would not automatically be recognized or enforceable in the United Kingdom. In addition, uncertainty exists as to whether U.K. courts would entertain original actions brought in the United Kingdom against us or our directors or senior management predicated upon the securities laws of the United States or any state in the United States. Any final and conclusive monetary judgment for a definite sum obtained against us in U.S. courts would be treated by the courts of the United Kingdom as a cause of action in itself and sued upon as a debt at common law so that no retrial of the issues would be necessary, provided that certain requirements are met. Whether these requirements are met in respect of a judgment based upon the civil liability provisions of the U.S. securities laws, including whether the award of monetary damages under such laws would constitute a penalty, is an issue for the court making such decision. If an English court gives judgment for the sum payable under a U.S. judgment, the English judgment will be enforceable by methods generally available for this purpose. These methods generally permit the English court discretion to prescribe the manner of enforcement.

As a result, U.S. investors may not be able to enforce against us or our executive officers, board of directors or certain experts named herein who are residents of the United Kingdom or countries other than the United States any judgments obtained in U.S. courts in civil and commercial matters, including judgments under the U.S. federal securities laws.

#### If we are classified as a passive foreign investment company for U.S. federal income tax purposes, U.S. Holders may incur adverse tax consequences.
Based on the nature and composition of our income, assets and operations and the income, assets and operations of our subsidiaries, we do not believe that we were a passive foreign investment company for U.S. federal income tax purposes (a "PFIC"), for the taxable year ending December 31, 2022, and we do not expect to be a PFIC in the foreseeable future. However, this is a factual determination that depends on, among other things, the nature and composition of our income and assets, and the market value of our shares and assets, including the nature and composition of income and assets and the market value of shares and assets of our subsidiaries, from time to time. Therefore, no assurance can be given that we were not a PFIC for the taxable year ended December 31, 2022, or will not be classified as a PFIC for the current taxable year or any future taxable year.

If we are considered a PFIC at any time that a U.S. Holder (as defined below under Item 10.E. "Material United States Tax Considerations") holds the ordinary shares or ADSs, U.S. Holders may suffer material adverse tax consequences, including with respect to any "excess distribution" received from us and any gain from a sale or other taxable disposition of the ordinary shares or ADSs. U.S. Holders should consult their tax advisors about the potential application of the PFIC rules to an investment in the ordinary shares or ADSs and the potential consequences related thereto. For further discussion, see Item 10.E. "Material United States Tax Considerations."

***If a United States person is treated as owning at least 10% of the ordinary shares or ADSs, such holder may be subject to adverse U.S. federal income tax consequences.***

If a United States person (as defined in the Internal Revenue Code of 1986, as amended) is treated as owning (directly, indirectly, or constructively) at least 10% of the value or voting power of the ordinary shares or ADSs, such person may be treated as a "United States shareholder" with respect to each "controlled foreign corporation" (a "CFC") in our group (if any). Under current law, if our group includes one or more U.S. subsidiaries, certain of our non-U.S. subsidiaries could be treated as CFCs regardless of whether or not we are treated as a CFC. A United States shareholder of a CFC may be required to report annually and include in its U.S. taxable income its pro rata share of "Subpart F income," "global intangible low-taxed income" and investments in U.S. property by CFCs, regardless of whether the Company makes any distributions. An individual that is a United States shareholder with respect to a CFC generally would not be allowed certain tax deductions or foreign tax credits that would be allowed to a United States shareholder that is a U.S. corporation. Failure to comply with these reporting obligations may subject a United States shareholder to significant monetary penalties and may prevent the statute of limitations with respect to such United States shareholder's U.S. federal income tax return for the year for which reporting was due from starting. We cannot provide any assurances that we will assist holders of the ordinary shares or ADSs in determining whether we or any of our

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non-U.S. subsidiaries are treated as a CFC or whether any holder of the ordinary shares or ADSs is treated as a United States shareholder with respect to any such CFC or furnish to any United States shareholders information that may be necessary to comply with the aforementioned reporting and tax paying obligations. The United States Internal Revenue Service has provided limited guidance on situations in which investors may rely on publicly available information to comply with their reporting and taxpaying obligations with respect to foreign-controlled CFCs. A U.S. Holder should consult its advisors regarding the potential application of these rules to an investment in the ordinary shares or ADSs.

#### Item 4. Information on the Company
A. History and Development of the Company

We were incorporated as a private limited company with the legal name Tayvin 103 Limited under the laws of England and Wales on February 12, 1998, with the company number 03509322. On March 26, 1998, we changed our company name to Abcam Limited, and on October 26, 2005, we reregistered as a public listed company with the name Abcam plc. Our principal office is located at Discovery Drive, Cambridge Biomedical Campus, Cambridge, United Kingdom, CB2 0AX, and our telephone number at this address is +(44) 1223 696000. We listed our American Depository Shares "ADSs" on the Nasdaq Global Select Market in October 2020, which trade under the symbol "ABCM." Our ordinary shares were also listed on the AIM market of the London Stock Exchange until December 14, 2022, when the shares were delisted from AIM in an effort to enhance liquidity of trading by combining all transactions on Nasdaq and to reduce costs through removing duplicative listing and compliance fees. Our website address is <u>www.corporate.abcam.com</u>. The information contained on, or that can be accessed from, our website does not form part of this Annual Report. The SEC maintains an internet website that contains reports, proxy and information statements, and other information regarding issuers, like us, that file electronically with the SEC. The address of that website is <u>www.sec.gov</u>. Our agent for service of process in the United States is Abcam Inc., 152 Grove Street, Suite 1100, Waltham, Massachusetts 02453, United States of America.

We have made, and intend to continue to make, strategic acquisitions in our existing and adjacent customer markets to solidify our current market presence and expand into new markets. In October 2021, we acquired BioVision, Inc., a leading innovator of biochemical and cell-based assays, and developer, producer, and seller of a wide portfolio of other products including recombinant proteins, antibodies, enzymes, and biochemical compounds, for cash consideration of $349.9 million, on a cash free, debt free basis, adding one of our largest suppliers to our in-house portfolio. In addition, we completed the following acquisitions:

• March 2020: Marker Gene Technologies, Inc., a company specializing in assay kits;

• January 2020: The proteomics and immunology businesses of Expedeon AG (the "Expedeon Acquisition") for £104.2 million;

• January 2020: certain business assets of Applied Stem Cell, Inc. ("Applied Stem Cell"), a gene editing platform and oncology product portfolio;

• July 2019: the entire live cell line and lysates portfolio of EdiGene; and

• January 2019: Calico Biolabs, Inc., a custom antibody company.

For a description of our principal capital expenditures and divestitures for the years ended December 31, 2022 and 2021 and for those currently in progress, see Item 5.B. "Operating and Financial Review and Prospects—Liquidity and Capital Resources."

B. Business Overview

We are a global life science company focused on identifying, developing, and distributing high quality reagents and tools for our customers at the forefront of life science research. Our products are used by researchers to study biological pathways, which is critical for scientific research, diagnostics, and drug discovery. Our mission is to provide life science researchers with highly validated products and services to advance biological research and achieve their goals faster. We do this by continuously innovating and providing our customers with high-quality tools, together with providing expert customer support. Our product offering includes an extensive portfolio of antibodies and related protein research tools that are fundamental to our customers' research and experimental workflow. Our customers are primarily scientists and researchers in academic institutions, research institutes and pharmaceutical, biotechnology and diagnostics companies.

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Headquartered in Cambridge, United Kingdom, we operate across 13 locations around the world, supported by our world-class team of approximately 1,800 employees (including day-rate contractors), including over 150 with PhDs, and have served customers in over 130 countries.

Our addressable market can be broadly classified into two categories, based on the application of our products and type of customer they serve:

• **Research use only ("RUO") proteomic tools**. These products include protein binding reagents, such as primary and secondary antibodies and singleplex immunoassays, and related reagents, such as conjugation kits, proteins, peptides, lysates, cell lines and biochemicals. Our research products are used to help detect, quantify, visualize, and modify proteins in scientific research experiments, and enable our customers to develop insights about targets and pathways of interest. Our customers include academic labs for scientific research and clinical labs in pharmaceutical and biotechnology companies working in the drug discovery and diagnostic markets. Our catalogue revenue, the substantial majority of which is purchased for RUO, accounted for 94% of our total revenue for the year ended December 31, 2022.

• **Antibody development for clinical application**. In recent years, through the custom development of new antibodies and the out licensing of our existing antibodies to biopharmaceutical and diagnostic companies, we have extended the commercial potential of our products into these markets. The substantial majority of our Custom Products and Licensing revenue, which includes custom development services, in vitro diagnostic medical devices ("IVD") sales and royalty and license income, is generated from these activities, and accounted for 6% of our total revenue for the year ended December 31, 2022.

We have developed an industry leading innovation platform that is informed by data analytics, research area specialists and the relationships we have built with our customers, enable us to anticipate and align our innovation efforts with our customers' research priorities. Today, nearly all of our primary antibody innovation pipeline is driven by our proprietary algorithms that interrogate a wide variety of internal and external data sources, including research literature and our web data, to predict product and market demand, which inform our development efforts. We leverage this data to anticipate which tools researchers will need in the future in order to help advance their research, as well as to identify breakthrough opportunities in areas where there is a lack of high-quality products or where we identify custom opportunities in collaboration with our customers.

We offer a large and differentiated portfolio of approximately 90,000 products as of December 31, 2022. Our flexible sourcing model enables us to grow our product offering in line with researchers' needs. This is achieved by developing and manufacturing in-house products, as well as sourcing products from our suppliers. We demand high product quality standards from our suppliers, and we enhance the utility of these products for our customers by providing additional data and product validation as well as by making them available through our global distribution platform and customer service. Over the last several years, we have increased focus on the development of in-house products for research areas we expect to be in high demand by our customers. Notably, our portfolio of proprietary recombinant monoclonal antibodies and immunoassays, which are recognized for their market leading high specificity, sensitivity, and consistency, approximates to over 29,000 of our products as of December 31, 2022. Alongside these highly validated protein binders, we offer additional related tools and reagents that customers require to study biological pathways and diseases. This focus has seen our proprietary portfolio grow to represent 67% of our total revenue for the year ended December 31, 2022, compared to 61% of our total revenue in the year ended December 31, 2021. We are continuously expanding our portfolio to provide our customers with additional solutions and further expand within our addressable markets.

We make our extensive product characterization and validation data available to our customers across our portfolio. This data is sourced by our in-house laboratories, our network of collaborators and independent consumer product reviews. Researchers use this to be able to select the right product for their highly specific needs. Stringent quality control and validation processes are carried out by our global laboratories to check the activity, stability, and performance of our products. Whether it is antibodies, kits, proteins or other products, the validation process is continuous, and the data obtained is made available on our product datasheets and in our protocols. We are continuing to invest in product validation in order to raise quality standards.

Since 2001, we have sold our products and services to customers in over 130 countries through a variety of channels, including our ecommerce sites, a network of distributors and a targeted field sales team. As of December 31, 2022, we estimate a global population of approximately one million life science researchers based within academic, research, government, and biopharmaceutical organizations that we aim to serve. As of

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December 31, 2022, we had seven manufacturing facilities and a global distribution network that enables prompt delivery to our customers, with orders generally shipped within 24 to 48 hours of ordering. Our multilingual scientific support team, which is mostly comprised of individuals with PhDs, together with our customer support team are available to help customers around the world with technical and order related queries.

We recorded revenue of £361.7 million, a loss after tax of £8.5 million and Adjusted Operating Profit of £76.3 million for the year ended December 31, 2022. For the year ended December 31, 2021, we recorded revenue of £315.4 million, a profit after tax of £4.4 million and Adjusted Operating Profit of £60.4 million. For the year ended December 31, 2022, our revenue grew by approximately 15% on a reported basis compared to the year ended December 31, 2021. For the definition of Adjusted Operating Profit and a reconciliation of Adjusted Operating Profit to profit for the year, please see Item 5.B. "Liquidity and Capital Resources."

#### Products and Services

#### Catalogue Products
In total, we offer approximately 90,000 products in our catalogue as of December 31, 2022. These catalogue products support the research of proteins in biological pathways. Ultimately, findings from this research can translate into treatments for diseases such as cancer and immune deficiency disorders.

In the year ended December 31, 2022, catalogue sales comprised 94% of our total revenue.

#### Principal catalogue product lines include the following:
**Primary and secondary antibodies** 

We provide antibodies intended for basic research, or those that are typically used in academic, pharmaceutical and biotechnology laboratories to investigate fundamental scientific questions. High quality research antibodies are critical to scientists' research and their ability to reproduce experiments, as unreliable research reagents lead to wasted time and money. We strive to offer high-quality antibodies that provide specificity, sensitivity, and consistency, which helps to increase confidence in research outcomes and reduce waste across the industry.

*Conjugated antibodies and conjugation kits* 

Conjugation is the process of attaching a label to an antibody to enable visualization and measurement. Labels come in many forms, such as enzymes, fluorescent molecules, and metals. We offer directly conjugated primary antibodies and antibody conjugation labelling kits which enable customers to conjugate their own antibodies.

*Singleplex immunoassays* 

An immunoassay is a test that uses one or more antibodies to detect and quantify a molecule of interest within a sample. We offer ELISA kits, which are based on reliable and optimized matched antibody pairs. Our matched antibody pairs are recombinant, monoclonal antibodies that are developed and optimized for use in relevant sample types like plasma and serum for reliable performance.

Our antibodies and antibody pairs are also made available to a range of third parties developing either novel multiplex platforms or upgrading their existing platforms.

**Proteins and peptides** 

We offer a range of peptides and proteins, which include cytokines (initiate an immune response), growth factors (used for culturing cells in a laboratory), and enzymes (catalyze reactions). Scientists use these proteins and peptides as part of more complex experiments to test how cells and organisms function.

**Edited cell lines and lysates** 

Cell lines and lysates are an important tool for antibody validation by both our customers and in our own labs. We offer a range of knockout cell lines and lysates, which are used for our in-house validation needs and are also made available to our customers for their own research.

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**Other products** 

We offer a wide variety of other products, including cellular activity kits, biochemicals and cell signaling pathway tools, which help researchers to find molecules needed for their research.

**Custom Products and Licensing** 

Alongside our catalogue offering we provide a comprehensive range of solutions for custom antibody, protein, and cell line development. Our custom antibody development incorporates initial evaluation and target identification through to the delivery of purified, fit for purpose antibodies for research, diagnostic or therapeutic application.

In other situations, antibodies that are already available on our online catalogue for research use purposes are requested for potential clinical use. In such case, we work with those customers to provide a license for commercial use on third-party platforms or within in vitro diagnostics. Antibody-based IVD assays are tools typically used in a clinical setting, such as a hospital or medical institute laboratory, to help diagnose a disease or condition. These tools are used on patient samples (such as blood, urine, or tissue) and help clinicians to diagnose or assess the progression of a disease. IVD assays can also provide information on the type of treatment to use and assist with disease prognosis.

For the year ended December 31, 2022, Custom Products and Licensing revenue comprised 6% of our total revenue.

#### Research & Development
We are constantly searching for new ways to bring more products in house and to improve our internal innovation capabilities through the use of data analytics. Especially where we see that customer needs are not being fulfilled or if there is demand for a higher quality alternative. We are engaged in ongoing research and development in all of our major product lines and believe that our future success depends, to a large extent, on our ability to continue to serve our customers' needs and keep pace with changing technologies. In the year ended December 31, 2022, we developed approximately 5,500 new products.

Underpinning our differentiated and innovative product development capability is a strong and dedicated team of experts, which we increased by sixteen after we acquired BioVision in October 2021. For more information about BioVision, see Item 10.C. "Additional Information—Material Contracts."

#### Manufacturing and Distribution
As of December 31, 2022, we have seven manufacturing facilities strategically located across four continents in close proximity to many of the largest clusters of life science research hubs. This enhances supply chain efficiency and ensures that, in most cases, our customers are able to have the product they require for their research within 24 to 48 hours of ordering. In October 2021, we acquired BioVision, which added a manufacturing facility in Milpitas, California. For more information about BioVision, see Item 10.C. "Additional Information—Material Contracts."

We have the expertise and government licenses to manage multiple controlled environments globally, enabling us to handle highly regulated chemicals and other materials in a compliant manner. We are committed to maintaining industry leading standards for our manufacturing processes at our global facilities in order to continue to provide our high-quality products to our customers. We follow strict global quality control procedures across all of our manufacturing facilities to ensure consistent lot-to-lot performance for our customers. We also impose the same quality standards on our third-party suppliers, to ensure that our customers receive a consistently high level of quality across products offered in our catalogue.

Our manufacturing site, based in Hangzhou, China, is ISO 9001:2015 certified and all other sites work to these standards. The facility of our IVD group, located in Fremont, California, is registered as a medical device establishment with the FDA and is subject to the FDA's Quality System Regulation ("QSR") and in compliance with ISO 13485:2016. This facility has a Device Manufacturing License granted by the California Department of Public Health.

#### Customers
We have three primary categories of customers including: academic institutions, research institutions, and pharmaceutical, biotechnology and diagnostic companies. While across all categories our end customers are life

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science researchers, customer orders are received from individual scientists ordering on their own behalf, laboratory managers ordering on behalf of their lab teams, purchasing managers ordering on behalf of several labs, or central procurement teams ordering on behalf of labs, divisions, or entire organizations. Orders can be received directly, through a variety of means, or via one of our distributors. As of December 31, 2022, 45% of our total revenue came from The Americas, with 55% of our total revenue originating from all other countries in which we operate.

As of December 31, 2022, we estimate a worldwide population of approximately one million life science researchers based within academic, research, government, and biopharmaceutical organizations that we aim to serve. For the year ended December 31, 2022, excluding sales through our distribution partners, approximately 61% of our catalogue revenue was derived from academic institutions, and the remaining approximately 39% was derived from our other customers including research institutes and biopharmaceutical, biotechnology, and diagnostics companies. Our sales are widely distributed, and no single customer accounted for more than 3% of our revenue for the ended December 31, 2022.

#### Sales Channels
Since 2001, we have sold our products and services to customers in over 130 countries through a variety of channels, including our ecommerce sites, a network of distributors and a targeted field sales team. These channels provide customers the flexibility to purchase our products quickly and from any location in the world. We continue to focus on ways to improve the ease and efficiency with which customers are able to find and access the products and services they need. In addition to our digital platform, we have an extensive range of offline channels, which include our global sales and customer and scientific support teams and Abcam and other industry hosted conferences, among others. In the year ended December 31, 2022, approximately 70% of our total revenue was sold through our direct channels, with approximately 30% sold through our global network of distributors.

#### Suppliers
We maintain a large network of product suppliers and collaborators. We select suppliers that adhere to high-quality and ethical standards, and we monitor their performance through audits, reviewing the progress of any corrective action plans and measuring of key performance indicators. If any of our suppliers do not comply with our high quality and ethical standards or underperform on key performance indicators, we reassess our relationship with such supplier. In some cases, we delist a noncomplying third-party product from our platform and supply channels. Our product suppliers benefit from our global distribution network, digital platform, and recognized brand to support the sales of their products. Our suppliers are widely distributed, with no single third-party supplier accounting for more than 2% of our revenue for the year ended December 31, 2022.

We are transparent about how we work in terms of ethics, quality, the environment, and general business principles, and aim to build long-term collaborative relationships based on trust.

#### Competition
We operate in a highly competitive environment with a diverse and fragmented base of competitors, many of whom focus on specific regions, customers and/or specific product segments. While many customers weigh and balance competitive factors differently in our industry, many focus upon consistency of product quality and performance, service and delivery, breadth of product line, consistency across products, price, customer support, online capabilities, and the ability to meet the special and local needs of our customers. Market success is primarily dependent upon product innovation and quality, selection of products, price and reputation. For certain customers, competition is driven not only by the product quality across our industry, but also by the adaptability of the supplier as a developmental and commercial partner. We rely on our scale, expertise, deep customer access, depth of product offering, marketing strategies and sales force, acquisition strategy, financial profile, and management team to deliver superior solutions to our customers and provide extensive market channel access to our suppliers.

Although only a few competitors have significant global scale and liquidity, the marketplace for reagents and biological tools, including RUO antibody suppliers, is fragmented and competitive, reflecting the wide range of technologies and applications that use these products and the unregulated status of the market. For a discussion of risks related to competition, see "Item 3.D. Risk Factors."

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#### Intellectual Property and Licenses
Our success depends in part upon our ability to protect our core technologies and intellectual property. We own significant intellectual property, including patents, patent applications, technology, trade secrets, know-how, copyrights and trademarks in the United States and other countries. Abcam is also licensed under domestic and foreign patents, patent applications, technology, trade secrets, know-how, copyrights and trademarks owned by others. In the aggregate, these intellectual property assets and licenses are of material importance to our business. We believe, however, that no single patent, technology, trademark, intellectual property asset or license is material in relation to Abcam's business.

#### Patents
As of December 31, 2022, we owned approximately 71 issued U.S. patents, we had 3 pending U.S. patent applications, we issued 191 foreign patents, and we had 16 pending foreign patent applications.

As of December 31, 2022, we exclusively licensed from MIT, through our acquisition of Firefly Bioworks Inc., five issued U.S. patents and 15 issued foreign patents. We also have non-exclusive patent licenses with the Broad Institute, Inc., ERS Genomics Limited, and Sigma-Aldrich Co. LLC, allowing us to use certain patented CRISPR technology to manufacture and sell CRISPR modified cell lines for research use.

*Antibodies*

Through our acquisition of Epitomics Inc., as of December 31, 2022, we own several patent families related to the generation of antibodies, including, for example: (i) a patent family consisting of six issued U.S. patents related to a fusion partner and the generation of monoclonal rabbit antibodies therefrom. Patents in this family are expected to expire in June 2026, exclusive of possible patent term adjustments or extensions or other forms of exclusivity; (ii) a patent family consisting of one issued U.K. patent, one issued Australian patent, and four pending patent applications in Europe, Canada, China and the United States, related to the method of producing a recombinant allotype specific rabbit monoclonal antibody, with the issued U.K. patent expected to expire in December 2034 and any patents issuing from the pending applications (including a U.K. patent which may be obtained through the pending European application) expected to expire in December 2035, exclusive of possible patent term adjustments or extensions or other forms of exclusivity; and (iii) a patent family consisting of one issued U.S patent and a pending application in Europe, related to methods of generating rabbit monoclonal antibodies by B cell panning and proliferation (without using any fusion partner), with the issued patent and any patents issuing from the pending applications are expected to expire in March 2036, exclusive of possible patent term adjustments or extensions or other forms of exclusivity.

Through our acquisition of AxioMx, Inc., as of December 31, 2022, we own several patent families related to the generation of recombinant antibodies, including, for example, a patent family consisting of two issued U.S. patents, an issued patent in Australia, an issued patent in China and an issued patent in five European countries, together with three pending applications in China, Canada, and Europe, all related to methods and compositions for producing a chimeric polypeptide, such as converting single-chain variable fragment to properly folded immunoglobulin. The issued patents and any patents issuing from the pending applications are expected to expire in June 2036, exclusive of possible patent term adjustments or extensions or other forms of exclusivity.

*Assays*

Through our acquisition of Firefly Bioworks, Inc., as of December 31, 2022, we have rights to, through ownership and exclusive license, several patent families related to our Fireplex product, consisting of nine issued U.S. patents, one pending U.S. patent application, 45 issued foreign patents, and one pending foreign patent applications, of which five issued U.S. patents and 15 issued foreign patents are exclusively licensed from MIT. The issued patents and any patents issuing from the pending applications in those families are expected to expire between 2026 and 2035, exclusive of possible patent term adjustments or extensions or other forms of exclusivity.

Through the Expedeon Acquisition, as of December 31, 2022, we own two patent families related to the CaptSure technology utilized in our SimpleStep ELISA kits, consisting of four issued U.S. patents, 10 issued foreign patents in France, Germany, Netherlands, Switzerland, and the United Kingdom, and one pending foreign patent application in Europe. The issued patents and any patents issuing from the pending applications in those families are expected to expire between 2030 and 2036, exclusive of possible patent term adjustments or extensions or other forms of exclusivity.

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*Conjugation*

Through the Expedeon Acquisition, as of December 31, 2022, we own four patent families related to our conjugation products, consisting of four issued U.S. patents, and 39 issued foreign patents. The issued patents are expected to expire between 2026 and 2034, exclusive of possible patent term adjustments or extensions or other forms of exclusivity.

Individual patents have terms for varying periods depending on the date of filing of the patent application or the date of patent issuance and the legal term of patents in the countries in which they are obtained. Generally, utility patents issued for applications filed in the United States are granted a term of 20 years from the earliest effective filing date of a non-provisional patent application. The duration of foreign patents varies in accordance with provisions of applicable local law, but typically is also 20 years from the earliest effective filing date. All taxes, annuities, or maintenance fees for a patent, as required by the USPTO and certain foreign jurisdictions, must be timely paid in order for the patent to remain in force during this period of time.

The actual protection afforded by a patent may vary on a product-by-product basis, from country to country and can depend upon many factors, including the type of patent, the scope of its coverage, the availability of regulatory-related extensions and the availability of legal remedies in a particular country and the validity and enforceability of the patent. Our patents and patent applications may be subject to procedural or legal challenges by others. We may be unable to obtain, maintain and protect the intellectual property rights necessary to conduct our business, and we may be subject to claims that we infringe or otherwise violate the intellectual property rights of others, which could materially harm our business. For more information, see the "Item 3.D. Risk Factors—Risks Relating to our Intellectual Property."

#### Trademarks
As of December 31, 2022, we own trademark registrations or registration applications including ABCAM, RABMAB, FIREPLEX, SIMPLESTEP ELISA, and LIGHTNING LINK in the United States and in other foreign jurisdictions, such as in Europe and China.

#### Trade Secrets and Proprietary Information
In addition to patents and trademarks, we rely upon unpatented trade secrets and know-how and continuing technological innovation to develop and maintain our competitive position. However, trade secrets and know-how can be difficult to protect. We seek to protect our proprietary information, in part, by executing confidentiality agreements with our collaborators and scientific advisors, and non-competition, non-solicitation, confidentiality, and invention assignment agreements with our employees, consultants, and independent contractors. We have also executed agreements requiring assignment of inventions with selected scientific advisors and collaborators. The confidentiality agreements we enter into are designed to protect our proprietary information and the agreements or clauses requiring assignment of inventions to us are designed to grant us ownership of technologies that are developed through our relationship with the respective counterparty. We cannot guarantee, however, that we have executed such agreements with all applicable counterparties, such agreements will not be breached, or that these agreements will afford us adequate protection of our intellectual property and proprietary rights. See "Item 3.D. Risk Factors—Risks Relating to our Intellectual Property."

#### People and Culture
We employed approximately 1,800 full-time and part-time employees (including day-rate contractors)

as of December 31, 2022.

#### Our Employees by Geography
The table below sets out the number of employees by geography (excluding day-rate contractors) as of December 31, 2022, 2021 and 2020:

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| | | | |
|:---|:---|:---|:---|
| **Geography** | **As of<br>December 31,<br>2022** | **As of<br>December 31,<br>2021** | **As of<br>December 31,<br>2020** |
|  United States | 475 | 405 | 402 |
|  EMEA<sup>(1)</sup> | 746 | 762 | 691 |
|  APAC<sup>(2)</sup> | 539 | 515 | 462 |
|  **Total**  | **1760** | **1682** | **1555** |

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(1) The significant majority of our EMEA employees are in Cambridge, United Kingdom.

(2) APAC includes employees in Shanghai, Beijing and Hangzhou in China, Tokyo, Japan, Singapore, Taiwan and Australia.

Our people are guided by our purpose, to serve life scientists to achieve their mission faster, and our culture. Attracting, developing, and retaining talented people in research and development, marketing, sales, digital, manufacturing and logistics and other positions is crucial to executing our strategy and our ability to compete effectively in a highly competitive industry. Our ability to recruit and retain such talent depends on several factors, including compensation and benefits, talent development and career opportunities, and our unique culture. To that end, we continually invest in our people in order to create an exceptional workplace and be an employer of choice.

#### Engagement, Diversity, and Inclusion
We aim to create an exceptional work environment where people feel valued, respected, and engaged. We encourage open, frequent dialogue through a number of channels, including our group-wide intranet, "town hall" meetings and global updates from our CEO and other members of the Leadership Team. In March 2020, we implemented a new employee insights tool to track engagement and better understand how our people feel. The tool, which includes access to global comparative data, enables managers to receive real-time, actionable insights.

For our business to succeed and effectively serve our global customers, we believe it is vital that our business includes people from diverse backgrounds and a culture of inclusion, which is free from bias and discrimination. During the year ended December 31, 2021, we launched our first Diversity and Inclusion strategy, which was focused on providing a welcoming working environment for all employees, continued education, a broadening of our recruitment pools and implementing and sustaining inclusion programs. Our active Employee Resource Groups ("ERGs") offer mentorship, support, and engagement to help our employees, including those from underrepresented groups, succeed and thrive.

In December 2022, we launched a new two-year Diversity and Inclusion action plan that superseded our 2021 strategy. As of December 31, 2022, we had seven ERGs operating globally. Furthermore, as of December 31, 2022, 57% of our total employee population was female, 52% of our managerial employees were female, and 46% of our employees graded as leaders were female. In our latest U.K. Gender Pay Gap Report, covering the 12-month period ended April 2022, our median and mean hourly pay gap were 20.5% and 25.4%, respectively, a decrease of 0.3% and 2.0%, respectively, compared to the 12-month period ended April 2021. During the year ended December 31, 2022, 70% of promotions to senior leadership graded positions were women. In recent years we have increased our effort to recruit and develop women through our organization by, for example: (i) introducing Diversity and Inclusion targets that form part of the Environmental, Social and Governance (ESG) rating that impacts senior leadership remuneration and (ii) increasing our recruitment target of at least two women on every shortlist for all vacancies.

#### Training and Development
We offer a range of online and offline development opportunities to support personal and provisional growth. For the year ended December 31, 2022, approximately 2,000 internal courses were delivered online and offline, and over 17,500 digital content items were delivered via our curated learning platform, Abcampus. In the year ended December 31, 2022, we offered 11 different apprenticeship standards at levels two to seven in the United Kingdom and had 24 active apprentices including 13 senior leader's masters apprenticeships and 6 digital and technology solutions degree apprenticeships. We aim to create a positive, collaborative culture, and we want to ensure everyone is aware of the contribution they can make across our business. We recognize that the work environment has an impact on productivity, innovation, and collaboration, which is why we have dedicated resources to building new facilities. We want employees to be engaged and motivated and have opportunities to develop and progress.

#### Compensation and Benefits
We believe rewarding employees fairly, equitably, and competitively is crucial to attracting, retaining, and maintaining a motivated workforce. To that end, we believe we offer a comprehensive and wide-ranging compensation and benefits program (which varies by region) including market competitive pay, broad-based share awards and bonuses, healthcare benefits, pension contributions, paid time off and family leave, flexible

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work schedules, employee well-being education and resources. With an emphasis on flexibility and personalization, each year we review and implement enhancements with the goal of offering benefits that are inclusive and meet the needs of our people.

In particular, we are focused on fostering an 'owner mindset' throughout the organization through greater share ownership. A central initiative of this effort was our AbShare scheme, an all-employee share plan. The scheme vested in November 2021, with over 90% of our global employees becoming shareholders as a result. Two subsequent successor plans, the "Profitable Growth Incentive Plan" for senior leaders, and the "Abcam Growth Plan" for all other employees, have since been launched.

Currently, none of our employees are represented by a trade or labor union other than one employee labor union in Hangzhou, China. Employee turnover has not had a material impact on our operations to date. In certain countries in which we operate, we are subject to local labor law requirements, which may automatically make our employees subject to industry-wide collective bargaining agreements. We have not experienced any work stoppages and we consider our relationship with our employees to be good.

#### Information Technology

#### Data Privacy and Security
We may also be subject to data privacy and security regulations by state, federal and foreign governments in which we conduct our business. Numerous state, federal and foreign laws, including consumer protection laws and regulations, govern the collection, dissemination, use, access to, confidentiality and security of critical or sensitive personal information. In the United States, numerous federal and state laws and regulations, including state data breach notification laws, federal and state consumer protection laws and regulations (for example, Section 5 of the Federal Trade Commission Act and the Health Insurance Portability and Accountability Act ("HIPAA")), govern the collection, use, disclosure, and protection of personal information could apply to our operations or the operations of our partners. In particular, regulations promulgated pursuant to HIPAA establish privacy and security standards that limit the use and disclosure of individually identifiable health information (known as "protected health information" or "PHI") and require the implementation of administrative, physical and technological safeguards to protect the privacy of protected health information and ensure the confidentiality, integrity and availability of electronic protected health information. Determining whether protected health information has been handled in compliance with applicable privacy standards and our contractual obligations can require complex factual and statistical analyses and may be subject to changing interpretation. State laws may be more stringent, broader in scope or offer greater individual rights with respect to PHI than HIPAA, and state laws may differ from each other, which may complicate compliance efforts. Entities that are found to be in violation of HIPAA as the result of a breach of unsecured PHI, a complaint about privacy practices, or an audit by the HHS, may be subject to significant civil, criminal and administrative fines and penalties and/or additional reporting and oversight obligations, as well as significant reputational harm, if required to enter into a resolution agreement and corrective action plan with HHS to settle allegations of HIPAA noncompliance.

In addition, state laws govern the privacy and security of health information in specified circumstances, many of which differ from each other in significant ways and may not have the same effect, thus complicating compliance efforts. Five U.S. states have now enacted data privacy legislation: California, Colorado, Connecticut, Utah, and Virginia. For example, California recently enacted the California Consumer Privacy Act (the "CCPA"), which creates new individual privacy rights for California consumers, as defined in the law, and places increased privacy and security obligations on entities handling certain personal data of consumers or households. The CCPA requires covered companies to provide new disclosures to consumers about such companies' data collection, use and sharing practices, provide such consumers new ways to opt out of certain sales or transfers of personal information. The CCPA also provides for civil penalties for violations, as well as a private right of action for certain data breaches that result in the loss of personal information that may increase the likelihood of, and risks associated with, data breach litigation. Additionally, a new privacy law, the California Privacy Rights Act ("CPRA"), was approved by California voters on November 3, 2020. When it goes into effect on January 1, 2023, the CPRA will modify significantly the CCPA, potentially resulting in further uncertainty and requiring us to incur additional costs and expenses in an effort to comply. Both the CCPA and CPRA could impact our business activities depending on how they are interpreted and exemplifies the vulnerability of our business to not only cyber threats but also the evolving regulatory environment related to personal data and protected health information.

E.U. member states, Switzerland, China, Russia, and other countries, have also adopted data protection laws and regulations that impose significant compliance obligations. For instance, the collection and use of personal

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health data in the EEA is governed by the provisions of the General Data Protection Regulation ("GDPR"). The GDPR became effective on May 25, 2018, and imposes strict obligations and restrictions on the ability to collect, analyze, and transfer personal data. In particular, these obligations and restrictions concern the consent of the individuals to whom the personal data relates, the information provided to the individuals, rights for data subjects in regard to their personal data (including data access rights, the right to be "forgotten" and the right to data portability), limitations on retention of personal data, the principle of accountability and the obligation to demonstrate compliance through policies, procedures, training and audit, demonstrating that an appropriate legal basis is in place or otherwise exists to justify data processing activities, the transfer of personal data out of the EEA, security breach notifications, security and confidentiality of the personal data, and the imposition of substantial potential fines for breaches of the data protection obligations. Data protection authorities from the different E.U. member states may impose additional requirements, which add to the complexity of processing personal data in the E.U. From January 1, 2021, we are subject to the GDPR and also the U.K. GDPR, which, together with the amended UK Data Protection Act 2018, retains the GDPR in U.K. national law. The U.K. GDPR mirrors the fines under the GDPR, e.g., fines up to the greater of €20.0 million / £17.5 million or 4.0% of global turnover. The European Commission has adopted an adequacy decision in favor of the United Kingdom, enabling data transfers from E.U. member states to the United Kingdom without additional safeguards. However, the U.K. adequacy decision will automatically expire in June 2025 unless the European Commission reassesses and renews/ extends that decision and remains under review by the Commission during this period. In September 2021, the U.K. government launched a consultation on its proposals for wide-ranging reform of U.K. data protection laws following Brexit. There is a risk that any material changes which are made to the U.K. data protection regime could result in the Commission reviewing the U.K. adequacy decision, and the U.K. losing its adequacy decision if the Commission deems the U.K. to no longer provide adequate protection for personal data. These changes will lead to additional costs and increase our overall risk exposure.

We are also subject to E.U. rules with respect to cross-border transfers of personal data out of the E.U. and EEA; for example, in July 2020, the Court of Justice of the European Union limited how organizations could lawfully transfer personal data from the EEA to the United States by invalidating the E.U.-U.S. Privacy Shield and imposing further restrictions on use of the standard contractual clauses, which could increase our costs and our ability to efficiently process personal data from the EEA. We are subject to the supervision of local data protection authorities in those E.U. jurisdictions where we are established or otherwise subject to the GDPR. Fines for certain breaches of the GDPR are significant: up to the greater of €20 million or 4% of total global annual turnover. In addition to the foregoing, a breach of the GDPR or other applicable privacy and data protection laws and regulations could result in regulatory investigations, reputational damage, orders to cease/change our use of data, enforcement notices, or potential civil claims including class action type litigation.

Compliance with these and any other applicable privacy and data security laws and regulations is a rigorous and time-intensive process, and we may be required to put in place additional mechanisms to ensure compliance with the new data protection rules. See "Risk Factors—Risks Relating to our Business and Industry—Cyber security risks and the failure to maintain the confidentiality, integrity and availability of our computer hardware, software and internet applications and related tools and functions, could result in damage to our reputation, data integrity and/or subject us to costs, fines or lawsuits under data privacy or other laws or contractual requirements."

On August 20, 2021, China passed the Personal Information Protection Law ("PIPL"), effective on November 1, 2021. Notably, the PIPL, similar to the GDPR, applies extraterritorially. The PIPL is intended to clarify the scope of application, the definitions of personal information and sensitive personal information (which includes medical and health information), the legality of personal information processing and the basic requirements of notice and consent, among other things. The PIPL also sets out data localization requirements for operators of critical information infrastructure ("CIIOs") and personal information processors who process personal information above a certain threshold prescribed by the relevant authorities. The PIPL also includes a list of rules which must be complied with prior to the transfer of personal information outside of China, such as compliance with a security assessment or certification by an agency designated by the relevant authorities or entering into standard form model contracts approved by the relevant authorities with the overseas recipient. Failure to comply with PIPL can result in fines of up to RMB 50.0 million or 5.0% of the prior year's total annual revenue for the personal information processor and/or a suspension of services or data processing activities. Other potential penalties include a fine of up to RMB one million on the person in charge or directly responsible personnel and, in serious cases, individuals and entities may be exposed to criminal liabilities under other local Chinese law, such as the Criminal Law of the People's Republic of China. The PIPL also prohibits responsible personnel for violations of the PIPL from holding high level management or data protection officer positions in relevant enterprises.

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#### Regulatory Matters

#### U.S. Regulation
Our products and operations are subject to regulation by the FDA and other federal, state, or local authorities, as well as foreign regulatory authorities. The FDA regulates, among other things, the research, development, testing, manufacturing, clearance, approval, labeling, storage, recordkeeping, advertising, promotion, marketing, distribution, postmarket monitoring, and reporting, and import and export of medical devices. The vast majority of our products are currently marketed as research use only medical devices.

Pursuant to its authority under the FDCA, the FDA has jurisdiction over medical devices, which are defined to include, among other things, IVD devices. IVD devices that are marketed as RUO are not intended for use in a clinical investigation or for clinical diagnostic use outside an investigation and must be labeled "For Research Use Only. Not for use in diagnostic procedures." Products that are intended for RUO and are properly labeled as RUO are exempt from compliance with the FDA's requirements applicable to medical devices more generally, including the requirements for clearance or approval and compliance with manufacturing requirements known as the QSR. A product labeled RUO but intended to be used diagnostically may be viewed by the FDA as adulterated and misbranded under the FDCA and is subject to FDA enforcement. The FDA may consider the totality of the circumstances surrounding distribution and use of an RUO product, including how the product is marketed, when determining its intended use.

RUO products cannot make any claims related to safety, effectiveness or diagnostic utility, and they cannot be intended for human clinical diagnostic use. In November 2013, the FDA issued a final guidance on products labeled RUO, which, among other things, reaffirmed that a company may not make any clinical or diagnostic claims about an RUO product. If the FDA were to determine, based on the totality of circumstances, that our products labeled and marketed for RUO are intended for diagnostic purposes, they would be considered medical devices that could require clearance or approval prior to commercialization.

#### Regulation of In Vitro Diagnostic Medical Devices in the European Union
A limited number of our products are classified as IVD in the European Union ("E.U."). The E.U. has adopted specific directives and regulations regulating the design, manufacture, clinical investigations, conformity assessment, labeling and adverse event reporting for medical devices (including IVD).

Until May 25, 2022, IVD were regulated by Directive 98/79/EC ("E.U. IVDD"), which has been repealed and replaced by Regulation (E.U.) No 2017/746 ("E.U. IVDR"). Our current certificates have been granted under the E.U. IVDD whose regime is described below. However, as of May 26, 2022, some of the E.U. IVDR requirements apply in place of the corresponding requirements of the E.U. IVDD with regard to registration of economic operators and of IVD, post-market surveillance and vigilance requirements. Pursuing marketing of IVD in the E.U. will notably require that our IVD be certified under the new regime set forth in the E.U. IVDR when our current certificates expire.

*In Vitro Diagnostic Medical Devices Directive*

Under the E.U. IVDD, all IVD placed on the market in the E.U. must meet essential requirements laid down in Annex I of the E.U. IVDD including the requirement that an IVD must be designed and manufactured in such a way that it will not compromise the clinical condition or safety of patients, or the safety and health of users and others. In addition, the IVD must achieve the performances intended by the manufacturer and be designed, manufactured, and packaged in a suitable manner. The European Commission has adopted various standards applicable to IVD. There are also harmonized standards relating to design and manufacture. While not mandatory, compliance with these standards is viewed as the easiest way to satisfy essential requirements as a practical matter as it creates a rebuttable presumption that the IVD satisfies that essential requirement.

To demonstrate compliance with the essential requirements laid down in Annex I of the E.U. IVDD and IVD manufacturers must undergo a conformity assessment procedure, which varies according to the type of IVD and its (risk) classification. As a general rule, demonstration of conformity of IVD and their manufacturers with essential requirements must be based, among other things, on the evaluation of clinical data supporting the safety and performance of the products during normal conditions of use. Specifically, a manufacturer must demonstrate that the IVD achieves its intended performance during normal conditions of use, that the known and foreseeable risks, and any adverse events, are minimized and acceptable when weighed against the benefits of its intended performance, and that any claims made about the performance and safety of the IVD are supported by suitable

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evidence. Except for (general) IVD (i.e., all IVD other than those covered by Annex II to the E.U. IVDD and IVD for self-testing), where the manufacturer can self-assess the conformity of its products with essential requirements, a conformity assessment procedure requires the intervention of a notified body. Notified bodies are independent organizations designated by E.U. member states to assess the conformity of devices before being placed on the market. A notified body would typically audit and examine a product's technical dossiers and the manufacturer's quality system (the notified body must presume that quality systems which implement the relevant harmonized standards – which is ISO 13485:2016 for Medical Devices Quality Management Systems – conform to these requirements). If satisfied that the relevant product conforms to the relevant essential requirements, the notified body issues a certificate of conformity, which the manufacturer uses as a basis for its own declaration of conformity. The manufacturer may then apply the CE mark to the IVD, which allows the IVD to be placed on the market throughout the E.U.

Throughout the term of the certificate of conformity, the manufacturer will be subject to periodic surveillance audits to verify continued compliance with the applicable requirements. In particular, there will be a new audit by the notified body before it will renew the relevant certificate(s).

*In Vitro Diagnostic Medical Devices Regulation*

The E.U. regulatory landscape concerning IVD recently evolved. On April 5, 2017, E.U. IVDR was adopted with the aim of ensuring better protection of public health and patient safety. The E.U. IVDR establishes a uniform, transparent, predictable, and sustainable regulatory framework across the E.U. for IVD and ensure a high level of safety and health while supporting innovation. Unlike the E.U. IVDD, the IVDR is directly applicable in all E.U. member states without the need for member states to implement into national law. This aims at reducing the risk of discrepancies in interpretation across the different European markets.

The E.U. IVDR became applicable on May 26, 2022, but there is a tiered system extending the grace period for many IVD (depending on their risk classification) before they have to be fully compliant with the regulation. However, even in this case, manufacturers must comply with a number of new or reinforced requirements set forth in the E.U. IVDR, in particular, the obligations described below.

The E.U. IVDR requires that before placing an IVD on the market, manufacturers (as well as other economic operators such as authorized representatives and importers) must register by submitting identification information to the electronic system (Eudamed), unless they have already registered. The information to be submitted by manufacturers (and authorized representatives) also includes the name, address and contact details of the person or persons responsible for regulatory compliance. The new Regulation also requires that before placing an IVD on the market, manufacturers must assign a unique identifier to the IVD and provide it along with other core data to the unique device identifier ("UDI") database. These new requirements aim at ensuring better identification and traceability of the IVD. Each IVD – and as applicable, each package – will have a UDI composed of two parts: a device identifier ("UDI-DI"), specific to an IVD, and a production identifier ("UDI-PI") to identify the unit producing the IVD. Manufacturers are also notably responsible for entering the necessary data on Eudamed, which includes the UDI database, and for keeping it up to date. The obligations for registration in Eudamed will become applicable at a later date (as Eudamed is not yet fully functional). Until Eudamed is fully functional, the corresponding provisions of the EU IVDD continue to apply for the purpose of meeting the obligations laid down in the provisions regarding exchange of information, including, and in particular, information regarding registration of IVD and economic operators.

All manufacturers placing IVD on the market in the E.U. must comply with the E.U. medical device vigilance system which has been reinforced by the E.U. IVDR. Under this system, serious incidents and Field Safety Corrective Actions ("FSCAs") must be reported to the relevant authorities of the E.U. member states. These reports will have to be submitted through Eudamed – once functional – and aim to ensure that, in addition to reporting to the relevant authorities of the EU member states, other actors such as the economic operators in the supply chain will also be informed. Until Eudamed is fully functional, the corresponding provisions of the E.U. IVDD continue to apply. Manufacturers are required to take FSCAs, which are defined as any corrective action for technical or medical reasons to prevent or reduce a risk of a serious incident associated with the use of an IVD that is made available on the market. A serious incident is any malfunction or deterioration in the characteristics or performance of an IVD on the market (e.g., inadequacy in the information supplied by the manufacturer, undesirable side-effect), which, directly or indirectly, might lead to either the death or serious deterioration of the health of a patient, user, or other persons, or to a serious public health threat. An FSCA may include the recall, modification, exchange, destruction or retrofitting of the IVD. FSCAs must be communicated by the manufacturer or its legal representative to its customers and/or to the end users of the IVD through Field

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Safety Notices. For similar serious incidents that occur with the same IVD or IVD type and for which the root cause has been identified or a FSCA implemented or where the incidents are common and well documented, manufacturers may provide periodic summary reports instead of individual serious incident reports.

The advertising and promotion of IVD are subject to some general principles set forth in E.U. legislation. According to the E.U. IVDR, only IVD that are CE marked may be marketed and advertised in the E.U. in accordance with their intended purpose. Directive 2006/114/EC concerning misleading and comparative advertising and Directive 2005/29/EC on unfair commercial practices, while not specific to the advertising of IVD, also apply to the advertising thereof and contain general rules, for example, requiring that advertisements are evidenced, balanced and not misleading. Specific requirements are defined at a national level. E.U. member states' laws related to the advertising and promotion of IVD, which vary between jurisdictions, may limit or restrict the advertising and promotion of products to the general public and may impose limitations on promotional activities with healthcare professionals.

Many E.U. member states have adopted specific anti-gift statutes that further limit commercial practices for IVD, in particular vis-à-vis healthcare professionals and organizations. Additionally, there has been a recent trend of increased regulation of payments and transfers of value provided to healthcare professionals or entities and many E.U. member states have adopted national "Sunshine Acts" which impose reporting and transparency requirements (often on an annual basis), similar to the requirements in the United States, on IVD manufacturers. Certain countries also mandate implementation of commercial compliance programs.

In the E.U., regulatory authorities have the power to carry out announced and, if necessary, unannounced inspections of companies, as well as suppliers and/or sub-contractors and, where necessary, the facilities of professional users. Failure to comply with regulatory requirements (as applicable) could require time and resources to respond to the regulatory authorities' observations and to implement corrective and preventive actions, as appropriate. Regulatory authorities have broad compliance and enforcement powers and if such issues cannot be resolved to their satisfaction can take a variety of actions, including untitled or warning letters, fines, consent decrees, injunctions, or civil or criminal penalties.

The aforementioned E.U. rules are generally applicable in the European Economic Area ("EEA") which consists of the 27 E.U. member states plus Norway, Liechtenstein and Iceland.

#### Regulation of Medical Devices in the United Kingdom
Since the end of the Brexit transition period on January 1, 2021, Great Britain (England, Scotland and Wales) has not been directly subject to E.U. laws, however under the terms of the Ireland/Northern Ireland Protocol, E.U. laws, including the E.U. IVDR, generally apply to Northern Ireland. Since January 1, 2021, the Medicines and Healthcare Products Regulatory Agency ("MHRA") has become the sovereign regulatory authority responsible for Great Britain. New regulations require all medical devices (including IVD) to be registered with the MHRA, and since January 1, 2022, manufacturers based outside the U.K. have been required to appoint a U.K. responsible person that has a registered place of business in the U.K. to register devices with the MHRA.

On June 26, 2022, the MHRA published its response to a 10-week consultation on the post-Brexit regulatory framework for medical devices and diagnostics. Regulations implementing the new regime were originally scheduled to come into force in July 2023, but the Government has recently confirmed that this date has been postponed until July 2024. Devices which have valid certification issued by E.U. notified bodies under the E.U. IVDR or E.U. IVDD are subject to transitional arrangements. Following these transitional periods, it is expected that all medical devices will require a U.K. Conformity Assessment ("UKCA") mark.

#### Insurance
We maintain commercial insurance programs with third parties in the areas of property and business interruption, employers' liability, product liability and cyber security, among others. We self-insure certain risks inherent in our business which, taken together with the deductible levels and exclusions contained within our third-party programs, results in our recording of accruals for incurred claims. Our ultimate exposure may be mitigated by amounts we expect to recover from third parties associated with such claims.

C. Organizational Structure

The legal name of our company is Abcam plc and we are incorporated under the laws of England and Wales. We have 27 wholly-owned subsidiaries. Please refer to Note 16 to our audited consolidated financial

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statements included elsewhere in this Annual Report for a listing of our significant subsidiaries, including name, country of incorporation, and proportion of ownership interest.

D. Property, Plant and Equipment

#### Corporate Offices
Our headquarters is located at Discovery Drive, Cambridge Biomedical Campus, Cambridge, CB2 0AX United Kingdom, housing central support functions, and is leased for a term of 20 years expiring in 2038. The lease covers an aggregate of approximately 100,000 square feet, divided over three floors. We also operate from a property in Waltham, Massachusetts. Our Waltham, Massachusetts office is our main corporate facility in the United States, housing U.S. support functions, and is leased for a term of 12 years expiring in 2032. The lease currently covers 75,000 square feet with the option to extend square footage over the course of the lease to 98,985 square feet. We also operate from properties in Shanghai, China and Singapore.

#### Sales and Distribution
Our major sales and distribution offices are located in Beijing, Hangzhou and Shanghai, China; Tokyo, Japan; Singapore; Cambridge, United Kingdom; Amsterdam, Netherlands; and the United States including Waltham, Massachusetts; and Eugene, Oregon.

#### Research and Development, Supply Chain Operations and Manufacturing
Our research and development, supply chain operations and manufacturing sites are located in Adelaide, Australia; Hangzhou, China; Cambridge, United Kingdom and the United States including Branford, Connecticut; Eugene, Oregon; Fremont California; and Waltham, Massachusetts.

During the year ended December 31, 2022, to accommodate anticipated future growth and the relocation of activities from Milpitas, California in 2023, we continued the expansion of our new and existing leased office spaces in Waltham, Massachusetts. We believe that our existing facilities are adequate to meet current requirements and that suitable additional or substitute space will be available as needed to accommodate any further physical expansion of operations and for any additional offices.

#### IT Development hub
Our IT development hubs are located in Shanghai, China; Amsterdam, Netherlands; and Cambridge, United Kingdom.

#### Financing
We are financing expansions and improvements to our property portfolio in part through our operations and other sources of liquidity, primarily our Revolving Credit Facility ("RCF"). We expect to continue to use these sources to fund our continued expansion and improvements.

#### Item 4A. Unresolved Staff Comments
None.

#### Item 5. Operating and Financial Review and Prospects
*You should read the following discussion together with consolidated financial statements and the related notes included elsewhere in this Annual Report. The statements contained in this discussion regarding industry outlook, our expectations regarding our future performance, liquidity and capital resources and other non-historical statements in this discussion are forward-looking statements. These forward-looking statements are subject to numerous risks and uncertainties, including, but not limited to, the risks and uncertainties described in "Risk Factors," "Risk Factor Summary," and "Cautionary Statement Regarding Forward-Looking Statements." Our actual results may differ materially from those contained in or implied by any forward-looking statements.*

*Certain information called for by this Item 5, including a discussion of the 12-months ended December 31, 2020, as well a comparison of the fiscal year ended December 31, 2021 against the 12-months ended December 31, 2020, has been reported previously in our Annual Report on Form 20-F for the year ended December 31, 2021 filed on March 14, 2022 under Item 5. "Operating and Financial Review and Prospects.* 

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#### Overview
We are a global life science company focused on identifying, developing, and distributing high-quality reagents and tools for our customers at the forefront of life science research. Our products are used by researchers to study biological pathways, which is critical for scientific research, diagnostics, and drug discovery. Our mission is to provide life science researchers with highly validated products and services to advance biological research and achieve their goals faster. We have increased our emphasis on continuous innovation and providing our customers with high-quality tools, together with expert customer support. Our product offering includes an extensive portfolio of antibodies and related protein research tools that are fundamental to our customers' research and experimental workflow. Our customers are primarily scientists and researchers in academic institutions, research institutes and pharmaceutical, biotechnology and diagnostics companies. Headquartered in Cambridge, United Kingdom, we operate across 13 locations around the world, supported by our world class team of approximately 1,800 employees (including day-rate contractors), comprised of individuals, including over 400 in our Research & Development area, with over 150 employees holding a PhD. We serve our customers in over 130 countries.

We believe that our product portfolio enables breakthrough proteomics discovery by our customers and partners. Our customers and partners are working to innovate and discover proteomic mechanisms such as the role of signaling and regulatory proteins in biological pathways—ultimately leading to diagnostics and treatments for diseases such as cancer and immune deficiency disorders. Their success depends on rigorous product performance and reliability, and it is these factors that continue to guide our innovation efforts.

As part of our strategy to serve our customers with best-in-class in-house products, we have put more resources into innovating antibodies and immunoassays, and we have complemented these areas with extensions to conjugation kits, proteins/cytokines, engineered cell lines, and now a range of BioVision cellular and biochemical assays. In-house sales, including Custom Products and Licensing ("CP&L") and BioVision, represent approximately 67% of our total sales and achieved approximately 18% CER revenue growth, and approximately 26% reported growth for the year ended December 31, 2022. Third-party product sales represent approximately 33% of our total sales and declined approximately 9% on a CER basis and approximately 4% on a reported basis.

In total, we launched approximately 5,500 new products in 2022. Since 2019, our cadence of new product introductions has resulted in over 28,000 products that contributed over 10% of our total revenues for the year ended December 31, 2022. We believe that our emphasis on customer data insights and our approach to innovation and marketing underly this strong growth driver from internal innovation.

In the year ended December 31, 2022, our teams continued to develop over 3,000 high-quality antibody products including recombinant RabMAb antibodies, antibody pairs, SimpleStep ELISA kits and new formulations that enable faster labelling and assay development. These new product introductions combined to meet two objectives for our new product development: fill unmet needs in research and increase product quality. Our focus on product quality has led us to validate developed products using a biopharmaceutical process and quality control thereby enabling higher standards of out-of-box quality for our customers. Together, these actions have substantially improved Abcam's quality and our overall brand preference. As a global supplier of critical life science research reagents and tools, we are focused on strengthening our position as a partner of choice for organizations that are looking to access high-quality antibodies and antibody expertise for commercial use within their products and assays, a philosophy we refer to as "Abcam Inside."

For the year ended December 31, 2022, CP&L have resulted in several customers and partners adopting our products for use on their third-party platforms or development of clinical products. Reported revenues were £21.9 million and grew approximately 5% on a CER basis and approximately 15% on a reported revenue basis for the year ended December 31, 2022.

In total, we entered into 33 new or expanded existing agreements with such organizations, including WuXi Diagnostics, NanoString, Twist Biosciences, Alamar Biosciences, Inc., and Roche Holding AG. In 2022, over 1,200 of our antibodies have been commercialized through these partners, for use on third-party platforms or as diagnostic tools. The total number of Abcam antibody clones commercialized to date is over 2,000. We believe that these areas present significant long-term opportunities for the Group. Note that revenues from these agreements appear in both catalogue and CP&L revenues.

We recorded revenue of £361.7 million, a loss after tax for the year of £8.5 million and adjusted operating profit of £76.3 million for the year ended December 31, 2022. Revenue grew approximately 8% on a CER basis

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and reported revenues grew by approximately 15% for the year ended December 31, 2022, as compared to the year ended December 31, 2021. During the year, two factors impacted revenue growth. First, the implementation of the new Oracle Cloud ERP system disrupted revenues in September and October. Second, China revenues were impacted by COVID-19 controls and outbreaks. Based on the differences between forecasts and actual results we estimate the aggregate impact to sales was approximately £30m. We estimate this headwind negatively impacted revenue growth by approximately 10% on a reported and 9% on our CER growth rates.

From a geographic basis, total CER and reported revenue growth by region of total catalogue sales is as follows:

• Americas +16% CER / +28% Reported

o Excluding Distributors, Americas sales were driven by high-single digit CER revenue growth in Academia, and high-teens CER growth in Biopharma. Excluding the disruption on our revenues, Americas grew over 20% on a CER basis.

• EMEA +6% CER / +6% Reported

o Excluding Distributors, EMEA sales were driven by high-teens digit CER revenue growth in Biopharma, and low-single digit CER growth in Academia. Excluding the disruption on our revenues, EMEA grew low teens on a CER basis.

• China -2% CER / +5% Reported

o Excluding the disruption on our revenues, China grew mid-teens on a CER basis.

• Rest of Asia Pacific including Japan +5% CER / +7% Reported

o Excluding Japan which experienced flat CER growth, the rest of Asia-Pacific grew high-single digit CER growth.

From a served end markets basis, total CER and reported revenue growth of total catalogue sales is as follows:

• Academia +4% CER / +11% Reported

• Biopharma +10% CER / +18% Reported

• Distributors +12% CER / +18% Reported

We present our results of operations in the same way that we manage our business, evaluate our performance, and allocate our resources. We have determined that we only have one reportable segment, which is the sale of antibodies and related products.

#### Factors Affecting Our Performance
Our financial condition and results of operations have been, and will continue to be, affected by a number of important factors, including the following:

**Product Mix, Growth, and Innovation** 

We offer a variety of products, and the products in our portfolio are sold at different prices and in different volumes. In any particular period, changes in the volume of particular products sold across our various markets and the prices of those products relative to other products will impact our cost of sales, our gross profit and our gross margin. We continue to increase our focus on our innovation platform to extend and improve our in-house proprietary product offering, which we believe will continue to expand our market share in research use only markets. Sales of in-house products generate a substantially higher gross margin than third-party product sales, and we also believe that in-house products will support continued market share expansion in research use markets while also enabling us to extend our product offering, through industry partners, to clinical applications. We expect to continue to devote significant resources to developing innovative new products, both as part of our existing portfolio and in complementary and adjacent markets. The acceptance and growth of such new products may vary. The volume of our products sold during a given period in any particular market will depend in part on successfully introducing new products that generate additional demand as well as the extent to which new products may impact our sales of existing products.

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**Seasonality** 

We experience modest seasonal customer demand, generally as a result of vacation and academic schedules of our worldwide customer base. We typically see minor slowdowns around the summer and winter holidays and a slight increase during the academic year. We believe that this is caused by factors unique to those particular product markets such as customer manufacturing schedules, inventory levels in the supply chain and government approval processes. As a result, we may see fluctuations across periods as the timing of our customers' demand for certain products may change.

**Currency Exchange Rates** 

We have substantial global operations whose financial condition and results of operations have been, and will continue to be, impacted by changes in the exchange rate of pound sterling into other currencies.

**Strategic Acquisitions** 

We have made, and intend to continue to make, strategic acquisitions in our existing and adjacent customer markets to supplement our organic growth, solidify our current market presence and expand into new markets. In October 2021, we acquired BioVision, Inc. ("BioVision"), a leading innovator of biochemical and cell-based assays, and developer, producer, and seller of a wide portfolio of other products including recombinant proteins, antibodies, enzymes, and biochemical compounds.

Our strategic acquisitions may affect our business growth and the comparability of our financial results. Following the successful integration of BioVision we generated £32.1 million in sales in 2022. The incremental impact on revenues was approximately 4% on a CER basis and 5% on a reported revenue growth basis.

We intend to continue to selectively pursue strategic acquisitions to further strengthen our competitiveness. We will evaluate and execute opportunities that complement and scale our business, optimize our profitability, help us expand into adjacent markets and add new capabilities to our business.

**Impact of the COVID-19 Pandemic** 

The spread of the COVID-19 pandemic, including variants, has adversely affected, and has continued to adversely affect elements of our business and could continue to do so. Revenues in China were impacted by COVID-19, and the related preventative and precautionary measures, during the year ended December 31, 2022.

Global supply chains have faced significant challenges and delays. These additional pressures have largely been resolved by additional investment in manufacturing equipment and processes, while also introducing additional shift patterns in order to achieve better utilization of our resources. Further progress is expected as we pursue changes to our processes including quality control, kit development and logistics as well as benefits expected from our integrated business planning process.

#### Operating Expenses
We have been investing in sales and distribution, manufacturing and logistics, research and development and profit margins have been suppressed by the effects of both COVID-19 and the implementation of our five year-growth plan to 2024. Many of our major investment plans are now substantially complete, and as we look forward, we expect to see the rate of investment reduce and the resultant delivery of operational leverage as the value of our investments are realized.

For the year ended December 31, 2021 and the year ended December 31, 2022, our operating profit margin was 2.3% and an operating margin of (2.8%), respectively, and our adjusted operating profit margins were 19.2%, and 21.1%, respectively.

As we look forward, we expect that anticipated growth of our in-house products coupled with slower operating expense growth will enable significant operating leverage. We are confident in our ability to achieve >30% adjusted operating profit margin in 2024 consistent with our five-year growth plan.

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#### Key Indicators of Performance and Financial Condition
The following table sets forth our key indicators of performance and financial condition for the years ended December 31, 2021 and 2022.

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| | | |
|:---|:---|:---|
|  | **Year ended<br>December 31,<br>2021** | **Year ended<br>December 31,<br>2022** |
|  | **(in millions unless otherwise stated)** | **(in millions unless otherwise stated)** |
|  Total CER revenue growth<sup>(1)</sup> | 22.3% | 7.8% |
|  Net cash inflow from operating activities | £62.9 | £28.7 |
|  Free Cash Flow<sup>(2)</sup> | £6.0 | £(25.7) |
|  Profit / (loss) for the year | £4.4 | £(8.5) |
|  Adjusted Operating Profit<sup>(3)</sup> | £60.4 | £76.3 |
|  Adjusted Operating Profit Margin<sup>(4)</sup> | 19.2% | 21.1% |
|  ROCE<sup>(5)</sup> | 7.6% | 8.9% |
|  Diluted earnings per share | £0.019 | £(0.037) |
|  Adjusted Diluted earnings per share<sup>(6)</sup> | £0.206 | £0.249 |

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(1) Total Constant Exchange Rates ("CER") revenue growth is our total revenue growth from one year to the next on a constant exchange rate basis. We measure CER revenue growth by applying the prior year's actual exchange rates for each month to the current year's equivalent monthly results. We use this measure to identify the relative period on year-on-year performance of the business by removing the impact of currency movements that are outside of management's control. Please see "Non-IFRS Financial Measures" for a reconciliation of Total CER revenue growth to the most directly comparable IFRS financial performance measure and why we consider it useful.

(2) Free Cash Flow is defined as net cash inflow from operating activities less net capital expenditure, transfer of cash from/(to) escrow in respect of future capital expenditure and the principal and interest elements of lease obligations and lease incentives received. Free Cash Flow provides an indication of the amount of cash available for discretionary investing or financing after removing capital related items. Free Cash Flow may not be comparable to other similarly titled metrics of others. Please see "Non-IFRS Financial Measures" for a reconciliation of Free Cash Flow to the most directly comparable IFRS financial performance measure and why we consider it useful.

(3) Adjusted Operating Profit is defined as profit for the year before taking account of finance income, finance costs, tax, exceptional items, share-based payments, and amortization of acquisition intangibles. Exceptional items consist of certain cash and non-cash items that we believe are not reflective of the normal course of our business. We identify and determine items to be exceptional based on their nature and incidence or by their significance. As a result, the composition of exceptional items may vary from year to year. Exceptional items currently consist of the impairment of intangible assets, systems and process improvement costs, acquisition costs, integration and reorganization costs, amortization of acquisition intangibles, amortization of fair value adjustments and share-based payments. Adjusted Operating Profit may not be comparable to other similarly titled metrics of others. Please see "Non-IFRS Financial Measures" for a reconciliation of Adjusted Operating Profit to the most directly comparable IFRS financial performance measure and why we consider it useful.

(4) Adjusted Operating Profit Margin is defined as Adjusted Operating Profit calculated as a percentage of revenue. Adjusted Operating Profit Margin may not be comparable to other similarly titled metrics of others. Please see "Non-IFRS Financial Measures" for a reconciliation of Adjusted Operating Profit Margin to the most directly comparable IFRS financial performance measure and why we consider it useful.

(5) Return On Capital Employed ("ROCE") is defined as Adjusted Operating Profit divided by capital employed, which is defined as total assets less current liabilities. We believe that ROCE is a key tool in measuring our financial efficiency and ability to create future growth in value. We aim to maintain ROCE at a level above our estimated cost of capital. ROCE may not be comparable to other similarly titled metrics of others. Please see "Non-IFRS Financial Measures" for a reconciliation of Adjusted Operating Profit, from which ROCE is derived, to the most directly comparable IFRS financial performance measure and why we consider it useful.

(6) Adjusted Diluted earnings per share is defined as Adjusted profit for the year divided by the weighted average number of ordinary shares for the purposes of diluted earnings per share. Adjusted profit for the year used in this calculation is defined as profit for the year less exceptional items: (i) amortization of fair value adjustments, (ii) impairment of intangible assets, (iii) system and process improvement costs, (iv) acquisition costs, (v) amortization costs of acquired intangibles, (vi) integration and reorganization costs, (vii) share-based payment costs and employer tax contributions thereon, (viii) impairment of assets held for

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sale, and (ix) the tax effect of items (i) to (viii). Adjusted Diluted earnings per share is calculated with an adjustment to the weighted average number of shares outstanding to assume conversion of all potentially dilutive ordinary shares. We use Adjusted Diluted earnings per share to measure underlying profitability and to reflect the other adjusted performance measures used. Adjusted Diluted earnings per share may not be comparable to other similarly titled metrics of others. Please see "Non-IFRS Financial Measures" for a reconciliation of Adjusted Diluted earnings per share to the most directly comparable IFRS financial performance measure and why we consider it useful.

A. Operating Results

#### Components of Our Results of Operations

#### Revenue
Our revenue primarily consists of catalogue product sales. Revenue from sales of goods, including revenue generated from products sold from our catalogue and 'IVD' products, and which represents the significant majority of our revenue, is recognized upon the earlier of delivery to the customer or the point at which the customer takes control of the goods, if this is sooner. We also earn revenue from custom products and licensing, which we call our Custom Products and Licensing revenue. Custom product and service revenue, which can be the provision of a service or the development of products for customers, is recognized at the point at which a milestone, as defined in the contract, has been completed. Every milestone is typically aligned to a customer deliverable. For example, the amount of services provided, a deliverable arising from the services or the number of products successfully developed and provided to the customers, and accordingly is considered to be a performance obligation. Each milestone has a defined transaction price. If it is identified that the costs will be in excess of the contract revenue, the expected loss is recognized as an expense immediately. License fee income is recognized upon delivery of the licensed technology where our continued performance or future research and development services are not required. Royalty revenue is recognized on an accruals basis based on the contractual terms and the substance of the agreements with the counterparty, provided that the amount can be reliably measured and it is probable that the economic benefit will flow to us.

**Cost of sales** 

Cost of sales primarily consists of:

• product costs, which are the costs of inventory associated with a sale, including manufacturing costs;

• costs incurred in bringing goods into a position where they can be sold, for example: shipping costs that are necessarily incurred to bring the inventory to be ready for distribution to customers or distributors as well as those shipping costs incurred for onward distribution to customers; packaging costs incurred on sales; and expenses incurred in moving inventory from one of our locations to another one of our locations;

• other components, such as: inventory provisioning and write off expenses; free of charge replacements, which are provided to customers if any problems with the products they ordered were identified; service costs, which are incurred in the provision of custom products or services and are recognized in line with service revenue. Service costs vary depending on whether revenue is recognized at a point in time or over a period of time; if revenue is recognized over time, the costs are recognized as incurred, and when a performance obligation exists and any costs that were deferred have been fulfilled, then these are recognized in cost of sales; and royalty fees payable for products under license; and

• amortization of fair value adjustments in inventory as a result of acquisitions.

#### Gross profit and gross margin
Our gross profit and gross margin are influenced by changes in product mix and changes in foreign currency exchange rates. Gross margin is impacted by the mix of our products growing at different rates or differing growth rates within different geographic territories, as well as future acquisitions and productivity improvements to our manufacturing sites as we introduce more automation.

#### Selling, general and administrative expenses
Selling, general and administrative expenses primarily consist of salaries and related benefits. Other general and administrative costs include marketing expenses, facility related costs and professional services fees for

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auditing, tax, and general legal services, as well as expenses associated with the requirements of being a listed public company on Nasdaq. We expect that our general and administrative costs will modestly increase in the future as our business expands and we increase our headcount to support the expected growth in our operating activities. These increases will likely include increased costs related to the hiring of additional personnel and fees to outside consultants, lawyers, and accountants, among other expenses.

#### Research and Development expenses
Research activities, which are the early stages of product development, are expensed as incurred up until products reach commercial feasibility, after which point such development costs are capitalized and amortized over the anticipated commercial life of the asset. Such research and development expenses, which are expected to increase in the future, consist of salary related benefits, costs of related facilities, materials and equipment, costs associated with obtaining and maintaining patents and other intellectual property, depreciation of research and development specific assets and amortization of capitalized research and development projects, and include an offset in respect of research and development tax credits as described further below. Development activities generally relate to creating new products, creating variations of existing products, modifying existing products to meet new applications, or developing new technology platforms from which to derive new products, but these costs are only capitalized once commercial feasibility is attained whereby this category of capitalized cost is described as Internally Developed Technology ("IDT").

We carry out extensive research and development activities, and as a result, we benefit in the United Kingdom from HMRC's Research and Development Expenditure Credit ("RDEC"), which provides relief against UK corporation tax. Broadly, RDECs provide a tax credit currently equal to 13% of "qualifying research and development expenditure" made by certain companies where certain criteria are met. Based on criteria established by HMRC, a portion of expenditures incurred in relation to our research and development and manufacturing development activities are eligible for RDEC relief. Our qualifying research and development expenditures largely consist of employment costs for research staff, consumables and certain internal overhead costs incurred as part of research projects for which we do not receive revenue and are loss generating. To the extent a company cannot utilize the RDEC against UK corporation tax, then certain rules apply that allow the RDEC to reduce the tax liability of certain specified taxes, and to the extent it is not possible to utilize the RDEC in full, then the net tax credit is repaid to the company by HMRC.

#### Exceptional items, share-based payments, and amortization of acquisition intangibles
Exceptional items, share-based payments and amortization of acquisition intangibles is comprised of certain cash and non-cash items that we believe are not reflective of the normal course of our business and where the separate disclosure of such items enables a reader to isolate and evaluate the impact of such items on results and allows for a fuller understanding of underlying performance of the business. We identify and determine items to be exceptional based on their nature and incidence or by their significance. As a result, the composition of exceptional items may vary from period to period and from year to year.

Current components consist of impairment of intangible assets including technology and software assets, systems and process improvement costs associated with our Oracle Cloud ERP system project that commenced in 2016, acquisition costs and integration and reorganization costs, impairment of assets held for sale, and costs related to a number of our share-based payment schemes offered to our employees and executives.

Costs associated with our share-based compensation schemes are non-cash charges and are determined using several factors, including expectations surrounding future performance, employee forfeiture rates, and the share price for employee payroll related tax items. These factors are beyond our direct control and generally unrelated to operational decisions and our performance in any particular period. Further, costs associated with our share-based compensation schemes are not reflective of the value ultimately received by the recipients of the awards. See Note 27 to our audited consolidated financial statements, which are included elsewhere in this Annual Report, for further discussion of our costs related to our share-based payment schemes.

Amortization of acquisition intangibles includes the amortization of intangible assets brought onto the balance sheet at a fair value in accordance with IFRS 3 Business Combinations and arising specifically from acquisition activity and the amortization of fair value adjustments to the balance sheet arising at the time of the acquisition.

**Finance income** 

Finance income is comprised of interest received or receivable on cash deposits.

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**Finance costs** 

Finance costs consist mainly of interest expense on our revolving credit facility ("RCF") that was drawn down during the year ended December 31, 2022 and is treated as short term debt. Finance costs additionally include the amortization of upfront fees incurred in setting up our RCF and other related facility fees, such as those for non-utilization. We have no other borrowings upon which interest could be incurred. Finance costs also include interest expense representing the unwinding of discounted lease liabilities in respect of right-of-use assets now presented on our balance sheet in accordance with IFRS 16, which became effective on July 1, 2019.

#### Tax
Our tax expense or credit consists of income taxes, with U.K. income being taxed at the U.K. rate of tax and taxation for other jurisdictions calculated at the rates prevailing in each respective jurisdiction. Tax also includes the unwinding of temporary differences caused mainly by the manner in which intangible assets related to acquisitions are recognized, and therefore amortized, in our consolidated financial statements compared to the individual entity financial statements, which is the basis upon which taxation is calculated.

We also benefit from the U.K. "Patent Box" regime that allows profits attributable to revenue from patents registered in the United Kingdom or E.U. or patented products to be taxed at an effective rate of 10.0%, rather than the current U.K. statutory rate of 19.0%. The U.K. statutory rate of Corporation Tax is increasing to 25.0% with effect from April 1, 2023.

#### Segment Reporting
We present our results of operations in the same way that we manage our business, evaluate our performance, and allocate our resources. We have concluded that we have only one core business activity, and there are no separately identifiable business segments that provide individual products or services or a group of related products and services that would be subject to separate risks and returns. The financial information reported to our Chief Executive Officer, who is considered our chief operating decision maker, for the purposes of resource allocation and assessment of performance is based wholly on our overall activities. Therefore, we have determined that we only have one reportable segment, which is the sale of antibodies and related products.

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#### Results of Operations
The following tables set forth our results of operations in pounds sterling and as a percentage of revenue for the years ended December 31, 2021 and 2022.

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| | | | |
|:---|:---|:---|:---|
|  | **Year<br>Ended<br>December 31,<br>2021** | **Year<br>Ended<br>December 31,<br>2022** | **Change** |
|  | **(in millions)** | **(in millions)** | **(in millions)** |
|  Revenue | £315.4 | £361.7 | 46.3 |
|  Cost of sales |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Before exceptional items, share-based payments and amortization of acquisition intangibles | (87.7) | (88.5) | (0.8) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Exceptional items, share-based payments and amortization of acquisition intangibles | (3.1) | (2.7) | 0.4 |
|  **Gross Profit**  | **224.6** | **270.5** | **45.9** |
|  Selling, general and administrative expenses: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Before exceptional items, share-based payments and amortization of acquisition intangibles | (150.6) | (176.3) | (25.7) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Exceptional items, share-based payments and amortization of acquisition intangibles | (39.1) | (48.2) | (9.1) |
|  Research and development expenses |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Before exceptional items, share-based payments and amortization of acquisition intangibles | (16.7) | (20.6) | (3.9) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Exceptional items, share-based payments and amortization of acquisition intangibles | (11.1) | (35.5) | (24.4) |
|  **Operating profit/(loss)** | **7.1** | **(10.1)** | **(17.2)** |
|  Finance income | 0.3 | 0.4 | 0.1 |
|  Finance costs | (2.7) | (5.9) | (3.2) |
|  **Profit / (loss) before tax**  | **4.7** | **(15.6)** | **(20.3)** |
|  Tax credit / (charge) | (0.3) | 7.1 | 7.4 |
|  **Profit / (loss) for the period**  | £**4.4** | £**(8.5)** | **(12.9)** |

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| | | |
|:---|:---|:---|
|  | **Year Ended<br>December 31,<br>2021** | **Year Ended<br>December 31,<br>2022** |
|  | **(as a % of revenue)** | **(as a % of revenue)** |
|  Revenue | 100.0 | 100 |
|  Cost of sales: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Before exceptional items, share-based payments and amortization of acquisition intangibles | (27.8) | (24.5) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Exceptional items, share-based payments and amortization of acquisition intangibles | (1.0) | (0.7) |
|  **Gross Profit** | 71.2 | 74.8 |
|  Selling, general and administrative expenses: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Before exceptional items, share-based payments and amortization of acquisition intangibles | (47.7) | (48.7) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Exceptional items, share-based payments and amortization of acquisition intangibles | (12.4) | (13.3) |
|  Research and development expenses: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Before exceptional items, share-based payments and amortization of acquisition intangibles | (5.3) | (5.7) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Exceptional items, share-based payments and amortization of acquisition intangibles | (3.5) | (9.8) |
|  **Operating profit/(loss)** | **2.3** | **(2.8)** |
|  Finance income | 0.1 | 0.1 |
|  Finance costs | (0.9) | (1.6) |
|  **Profit / (loss) before tax**  | **1.5** | **(4.3)** |
|  Tax credit / (charge) | (0.1) | 2.0 |
|  **Profit / (loss) for the period**  | **1.4** | **(2.4)** |

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*Revenue* 

Revenue was £315.4 million for the year ended December 31, 2021, compared to £361.7 million for the year ended December 31, 2022, representing total CER revenue growth of approximately 8% and reported revenue growth of approximately 15%.

Revenue growth was driven by organic sales of our in-house products, the positive impact from the BioVision acquisition, which contributed approximately 5% to our reported revenue growth, and the favorable impact of foreign exchange rates of 7% as the U.K. pound weakened against several of our major trading currencies including the U.S. Dollar, Euro, and Japanese Yen.

Our revenue is broken down into the following geographical components:

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|:---|:---|:---|:---|:---|
|  | **Year ended <br>December 31,<br>2021** | **Year ended <br>December 31,<br>2021** | **Year ended <br>December 31,<br>2022** | **Year ended <br>December 31,<br>2022** |
|  | **(in millions)** | **% of<br>revenue** | **(in millions)** | **% of<br>revenue** |
|  The Americas | £130.4 | 41.3% | £162.5 | 45.0% |
|  EMEA | 84.3 | 26.7% | 90.1 | 24.9% |
|  China | 58.2 | 18.6% | 62.9 | 17.4% |
|  Japan | 18.7 | 5.9% | 17.9 | 4.9% |
|  Rest of Asia Pacific | 23.8 | 7.5% | 28.3 | 7.8% |
|  **Total revenue**  | £**315.4** | **100.0%** | £**361.7** | **100.0%** |

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Revenue by type can be further broken down as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year Ended<br>December 31,<br>2021** | **Year Ended<br>December 31,<br>2021** | **Year Ended<br>December 31,<br>2022** | **Year Ended<br>December 31,<br>2022** |
|  | **(in millions)** | **% of<br>revenue** | **(in millions)** | **% of<br>revenue** |
|  **Catalogue revenue**  | £296.4 | 94.0% | £339.8 | 93.9% |
|  Custom products and services | 5.7 |  | 6.8 |  |
|  IVD | 6.3 |  | 6.1 |  |
|  Royalties and licenses | 7.0 |  | 9.0 |  |
|  **Custom Products and Licensing revenue sub-total** | 19.0 | 6.0% | 21.9 | 6.1% |
|  **Total revenue**  | £**315.4** | **100%** | **361.7** | **100%** |

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Total catalogue revenue can be further broken down as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year Ended<br>December 31,<br>2021** | **Year Ended<br>December 31,<br>2021** | **Year Ended<br>December 31,<br>2022** | **Year Ended<br>December 31,<br>2022** |
|  | **(in millions)** | **% of<br>revenue** | **(in millions)** | **% of<br>revenue** |
|  In house products | £174.1 | 58.7% | £222.0 | 65.3% |
|  Third-party products | 122.3 | 41.3% | 117.8 | 34.7% |
|  **Catalogue revenue sub-total**  | £**296.4** | **100.0%** | £**339.8** | **100.0%** |

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*Catalogue Revenue* 

Catalogue revenue was £296.4 million for the year ended December 31, 2021, compared to £339.8 million for the year ended December 31, 2022, representing approximately 8% CER revenue growth and approximately 15% reported revenue growth respectively. In-house catalogue revenue was £174.1 million for the year ended December 31, 2021, compared to £222.0 million for the year ended December 31, 2022, representing CER revenue growth, including BioVision, of approximately 20% and approximately 28% reported revenue growth. During the year, two factors impacted revenue growth. First, the implementation of the new Oracle Cloud ERP system disrupted revenues in September and October. Second, China revenues were impacted by COVID-19 controls and outbreaks. Based on the differences between forecasts and actual results we estimate the aggregate impact to sales was approximately £30m. We estimate this headwind negatively impacted revenue growth by approximately 10% on a reported and 9% on our CER growth rates.

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Custom Products & Licensing ("CP&L") revenue rose approximately 5% on a CER revenue growth basis and approximately 15% on a reported basis. Within CP&L, royalty and license sales grew 17% on a CER revenue basis as the number of out-licensed products and commercial deals continued to grow, and custom projects grew approximately 9% on a CER revenue basis as customer activity levels improved, while IVD declined.

*Cost of sales*

Cost of sales increased by £0.4 million to £91.2 million for the year ended December 31, 2022 compared to £90.8 million for the year ended December 31, 2021. Cost of sales before exceptional items, share-based payments and amortization of acquisition intangibles increased by £0.8 million, or approximately 1%, to £88.5 million for the year ended December 31, 2022 compared to £87.7 million for the year ended December 31, 2021.

*Gross profit*

Gross profit increased by £45.9 million, to £270.5 million for the year ended December 31, 2022 compared to £224.6 million for the year ended December 31, 2021. Gross profit before exceptional items, share-based payments and amortization of acquisition intangibles, increased by £45.5 million, to £273.2 million for the year ended December 31, 2022 compared to £227.7 million for the year ended December 31, 2021. This increase predominantly reflects the favorable movement in product mix towards high margin in-house revenues, and the favorable impact of the BioVision acquisition.

*Selling, general and administrative expenses*

Selling, general and administrative expenses increased by £34.8 million, to £224.5 million for the year ended December 31, 2022 compared to £189.7 million for the year ended December 31, 2021. Selling, general and administrative expenses before exceptional items, share-based payments and amortization of acquisition intangibles, increased by £25.7 million, to £176.3 million for the year ended December 31, 2022 compared to £150.6 million for the year ended December 31, 2021. The overall increase was due to an increase in salaries, IT systems and licenses, higher travel costs off a lower COVID base, and increased headcount for our in-house teams and the inclusion of BioVision.

*Research and development expenses*

Research and development expenses increased by £28.3 million, to £56.1 million for the year ended December 31, 2022 compared to £27.8 million for the year ended December 31, 2021. Research and Development expenses before exceptional items, share-based payments and amortization of acquisition intangibles increased by £3.9 million, to £20.6 million, for the year ended December 31, 2022 compared to £16.7 million for the year ended December 31, 2021. The overall increase was due to increases in salary, and related costs associated related to the BioVision acquisition.

*Exceptional items, share-based payments, and amortization of acquisition intangibles*

Exceptional items, share-based payments and amortization of acquisition intangibles were £86.4 million for the year ended December 31, 2022, compared to £53.3 million for the year ended December 31, 2021. This primary increase was driven by the impairment of assets held for sale. During the year ended December 31, 2022, the assets relating to Firefly BioWorks multiplex and assay technology were actively marketed and classified as held for sale on our balance sheet during the year. We were not successful in locating a buyer and a decision was made to discontinue our investment in these products and technology resulting in an impairment charge of £18.3 million. Acquisitions, integration and reorganization costs of £15.7 million for the year ended December 31, 2022 compared to £13.0 million for the year ended December 31, 2021, primarily related to the integration of BioVision, which was acquired in 2021, and expenses related to the delisting of our ordinary shares from trading on AIM which was effective from December 14, 2022.

Share-based payment expenses, as well as the associated employment taxes, of £26.2 million are included within this category in the year ended December 31, 2022 compared to £20.0 million for the year ended December 31, 2021. This was driven by the full year impact of a new share-based payment scheme under which grants were made mid-way through 2021. Other expenses consisted of amortization of fair value adjustments of £2.7 million relating to the fair value of the inventory acquired in connection with our integration of BioVision, compared to £3.1 million in the year ended December 31, 2021; systems process improvement costs of £6.6 million compared to £7.0 million for the year ended December 31, 2021, related to the work performed on

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the Oracle Cloud ERP project in upgrading our IT systems that did not qualify to be capitalized and an impairment of a software asset developed as part of the Oracle Cloud ERP project that was no longer required; and amortization of acquisition intangibles of £16.9 million for the year ended December 31, 2022, compared to £9.1 million for the year ended December 31, 2021.

*Net finance expense* 

Net finance expense for the year ended December 31, 2022 increased by £3.1 million to £5.5 million compared to £2.4 million for the year ended December 31, 2021. This comprised lease liability costs of £2.1 million compared to £1.7 million for the year ended December 31, 2021, representing the unwinding of discounted lease liabilities; interest payable on drawings of our RCF of £3.0 million compared to £0.7 million in the year ended December 31, 2021; and the amortization of arrangement fees of £0.4 million in line with the prior period. Interest payable on the RCF is £2.3 million higher than the prior year ended December 31, 2021. The primary increase in finance costs was driven by higher interest rates and a full year RCF drawdown for year ended December 31, 2022 as compared to only three months in 2021.

*Tax expense* 

Tax expense for the year ended December 31, 2022 was £7.1 million credit compared to a charge of £0.3 million for the year ended December 31, 2021.

In March 2021, the U.K. government announced that the U.K. Corporation Tax rate would increase from 19.0% to 25.0% commencing April 1, 2023. As a result, the deferred tax balances on those timing differences which originate in the U.K. and which are expected to reverse after April 1, 2023 were restated at the higher tax rate of 25.0%. We anticipate that our effective tax rate will increase towards the U.K. corporate rate and remain subject to further changes to the U.K. Corporation Tax rate, as well as equivalent changes that may occur in other jurisdictions in which we operate, as various governments take actions to address deficits caused by the COVID-19 pandemic.

*Operating profit* 

Operating profit decreased by £17.2 million resulting in an operating loss of £10.1 million for the year ended December 31, 2022. Continued gross profit margin improvement from the move to in-house products was offset by increases in selling, general and administration expenses driven by the planned investments in our platform and team, share-based payments, and the impairment of the Firefly Bioworks, a multiplex platform, asset held for sale.

Operating Profit before exceptional items, share-based payments and amortization of acquisition intangibles ("Adjusted Operating Profit") increased by £15.9 million to £76.3 million for the year ended December 31, 2022, representing an Operating Profit Margin before exceptional items, share-based payments and acquisition intangibles ("Adjusted Operating Profit Margin") of 21.1%, compared to £60.4 million for the year ended December 31, 2021, representing an Adjusted Operating Profit Margin of 19.2%. Adjusted Operating Profit was primarily driven by the factors affecting operating profit, with the exception of exceptional items, share-based payments and amortization of acquisition intangible assets, which are excluded from Adjusted Operating Profit.

B. Liquidity and Capital Resources

Since our inception, we have financed our operations primarily through cash generated by our operating activities. Our primary requirements for liquidity and capital are to finance working capital, capital expenditures, and general corporate purposes. We believe that our sources of liquidity and capital will be sufficient to meet our existing business needs for at least the next 12 months. However, because we are in the growth stage of our business, we expect to continue to invest in our business. We may require additional capital to respond to technological advancements, competitive dynamics or technologies, customer demands, business opportunities, challenges, acquisitions, or unforeseen circumstances. In addition, we may, in the short term or long term, require equity or debt financing or enter into new or additional credit facilities for other reasons.

Our primary sources of liquidity are our cash and cash equivalents and our RCF. As of December 31, 2022, we had cash and cash equivalents of £89.0 million with drawings of £119.6 million as at the year ended December 31, 2022.

In February 2019, we entered into an RCF with a syndicate of banks for £200.0 million, with an additional £100.0 million accordion option, providing us with additional financial flexibility for future acquisitions. We

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drew down £120.0 million on the RCF during the year ended December 31, 2021 to fund the BioVision acquisition in October 2021, and our RCF remained drawn in this amount as of December 31, 2022. The term of this RCF was to expire on January 31, 2024, but it was terminated by us in connection with our entry into the new RCF as discussed below.

On March 7, 2023, we entered into a new RCF with a syndicate of banks for £300.0 million with no accordion option. The new RCF has a term of 4 years, with the option to extend for one further year. The amount of £120.0 million drawn down on our initial facility was rolled forward into the new facility.

The interest rate on our initial RCF since January 2022 was based on the Sterling Overnight Index Average ("SONIA") risk free rate, a risk rated adjustment to the SONIA risk free rate and a margin between 0.75% and 1.45%, dependent upon a debt cover ratio. The interest rate on the new RCF is also based on the risk free rate, a risk rated adjustment to the SONIA risk free rate and a margin between 1.0% and 1.8%. Borrowings under both our initial facility and the new facility are unsecured but are guaranteed by certain of our material subsidiary companies.

Our capital expenditure consists of property, plant and equipment and intangible assets. Our total capital expenditures were £41.3 million during the year ended December 31, 2022 compared to £59.8 million for the year ended December 31, 2021. Major areas of capital expenditure included £16.8 million for property, plant and equipment for the year ended December 31, 2022 compared to £34.5 million for property, plant and equipment (of which £25.4m was footprint related) for the year ended December 31, 2022. Capital expenditure of £24.5 million was incurred on intangible assets in the year ended December 31, 2022 compared to £25.3 million for the year ended December 31, 2021, which included £8.2 million in respect of our Oracle Cloud ERP system implementation project and £8.5 million of internally developed technology relating to new in-house products for the year ended December 31, 2022, compared to £8.3 million in respect of our Oracle Cloud ERP project and £7.5 million related to internally developed technology for the year ended December 31, 2021. Other significant items included £8.0 million related to laboratory equipment during the year December 31, 2022, with an equivalent amount of £5.9 million for the year ended December 31, 2021.

We assess our liquidity, in part, through an analysis of our working capital together with our other sources of liquidity. As of December 31, 2022, our working capital balance, which is comprised of inventories, trade and other receivables and trade and other payables, was £84.2 million, an increase of £34.5 million from £49.7 million for the year ended December 31, 2021. The increase in working capital during the year ended December 31, 2022, was impacted by two factors: (i) the implementation of the new Oracle Cloud ERP system that disrupted revenues in the second half of the year ended December 31, 2022 (predominantly September and October), and (ii) the impact that the COVID-19 pandemic in China, and the related preventative and precautionary measures, had on our business. Specifically, the increases in inventory and accounts receivables were driven by our inability to ship and invoice product sales and collect cash on a timely basis.

The following table presents the summary consolidated cash flow information for the periods presented.

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| | | |
|:---|:---|:---|
|  | **Year<br>Ended<br>December 31,<br>2021** | **Year<br>Ended<br>December 31,<br>2022** |
|  | **(in millions)** | **(in millions)** |
|  Net cash inflow from operating activities | £62.9 | £28.7 |
|  Net cash outflow from investing activities | (291.5) | (24.4) |
|  Net cash inflow / (outflow) from financing activities | 111.4 | (15.5) |
|  **Increase / (decrease) in cash and cash equivalents** | £**(117.2)** | £**(11.2)** |

---

#### Net cash inflow from operating activities
*Year ended December 31, 2022 compared to the year ended December 31, 2021* 

Net cash inflow from operating activities was £28.7 million for the fiscal year ended December 31, 2022 compared to £62.9 million for the year ended December 31, 2021. This outflow was primarily driven by (i) increases in working capital, specifically an increase in inventories of £7.4 million, and (ii) an increase in receivables of £33.3 million. This was related to the implementation challenges from our new Oracle Cloud ERP system that resulted in deferred shipments of manufactured inventory and slower collections driven by our inability to ship and invoice product sales on a timely basis.

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#### Net cash outflow from investing activities
*Year ended December 31, 2022 compared to the year ended December 31, 2021* 

Net cash outflow from investing activities was £24.4 million for the year ended December 31, 2022 compared to £291.5 million for the year ended December 31, 2021, which primarily resulted from the acquisition of BioVision for £245.1 million. Outflows in 2022 were primarily from £41.3 million in capital expenditures partially offset by £16.2 million of escrow payment true-up related to the BioVision acquisition.

#### Net cash inflow from financing activities
*Year ended December 31, 2022 compared to the year ended December 31, 2021*

Net cash outflow from financing activities was £15.5 million for the year ended December 31, 2022 compared to inflows of £111.4 million for the year ended December 31, 2021. Outflows were related to lease repayments and cash interest. The inflows for the year ended December 31, 2021 primarily comprise £120.0 million arising from the drawdown of the Group's RCF to fund the BioVision acquisition partially offset by £8.8 million of amounts classified as lease principal payments and £2.2 million of interest payments including £1.5 million of amounts classified as lease interest payments.

#### Material Cash Requirements for Known Contractual and Other Obligations
We are a party to many contractual obligations involving commitments to make payments to third parties. These obligations impact our short-term and long-term liquidity and capital resource needs. Certain contractual obligations are reflected on the consolidated balance sheet as of December 31, 2022, while others are considered future commitments. Our contractual obligations primarily consist of long-term property leases and commitments to purchase items of capital expenditure. For information regarding our other contractual obligations, refer to Note 14 Property, Plants and Equipment, Note 15 Leases, and Note 26, Financial Instruments.

#### Non-IFRS Financial Measures
We collect and analyze operating and financial data to evaluate the health of our business and assess our performance. In addition to revenue, profit before tax and other results under IFRS, we assess our performance using a number of financial measures that are not defined under IFRS. We use Total CER revenue growth, Free Cash Flow, Adjusted Operating Profit, Adjusted Operating Profit Margin, ROCE and Adjusted Diluted earnings per share, each of which is described below, to evaluate our business, and we have included these non-IFRS financial measures in this Annual Report because they are key measures used by our management to evaluate our operating performance. Accordingly, we believe that these non-IFRS financial measures provide useful information to investors and others in understanding and evaluating our operating results in the same manner as our management team. These non-IFRS performance measures exclude certain cash and non-cash items that we believe are not reflective of the normal course of our business. Our calculation of these non-IFRS financial measures may differ from similarly titled non-IFRS measures, if any, reported by other companies. These non-IFRS financial measures should not be considered in isolation from, or as substitutes for, financial information prepared in accordance with IFRS.

#### Total CER Revenue Growth
Total CER revenue growth is our total revenue growth from one year to the next on a constant exchange rate basis. We measure CER revenue growth by applying the prior year's actual exchange rates for each month to the current year's equivalent monthly results. We use this measure to identify the relative year-on-year performance of the business by removing the impact of currency movements that are outside of management's control. Total CER revenue growth is included in this Annual Report because it is a key metric used internally to assess our financial performance. We also believe that Total CER revenue growth is useful to investors, analysts, and others in assessing our performance. Management believes that Total CER revenue growth is an appropriate measure of operating performance because it eliminates the impact of currency movements.

Total CER revenue growth is not an IFRS measure of our financial performance and should not be considered as an alternative to profit for the year as a measure of financial performance or as an alternative to any other performance measure derived in accordance with IFRS. Total CER revenue growth should not be construed as an inference that our future results will be unaffected by unusual or other items. Management compensates for these limitations by relying on our IFRS results in addition to using Total CER revenue growth as a supplemental measure. Our measure of Total CER revenue growth is not necessarily comparable to similarly titled captions of other companies due to different methods of calculation.

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The following tables present a reconciliation of revenue, the most directly comparable IFRS financial measure, to Total CER revenue growth for the periods indicated:

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| | |
|:---|:---|
|  | **(in millions)** |
|  Year ended December 31, 2021 revenue | £315.4 |
|  Year ended December 31, 2022 revenue at actual exchange rates | £361.7 |
|  Effect of foreign exchange | £(21.7) |
|  Year ended December 31, 2022 revenue at prior period's exchange rates | £340.0 |
|  **Total CER revenue growth**  | **7.8%** |

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#### Free Cash Flow
Free Cash Flow is net cash inflow from operating activities less net capital expenditure, transfer of cash from/(to) escrow in respect of future capital expenditure and the principal and interest elements of lease obligations. Free Cash Flow provides an indication of the amount of cash available for discretionary investing or financing after removing capital related items. Free Cash Flow is included in this Annual Report because it is a key metric used internally to measure our liquidity. We also believe that Free Cash Flow is useful to investors, analysts, and others in assessing our liquidity.

Free Cash Flow is not an IFRS measure of our financial performance and should not be considered as an alternative to net cash inflow from operating activities as a measure of liquidity, or as an alternative to any other performance measure derived in accordance with IFRS. Free Cash Flow should not be construed as an inference that our future results will be unaffected by unusual or other items. Management compensates for these limitations by relying on our IFRS results in addition to using Free Cash Flow as a supplemental measure. Our measure of Free Cash Flow is not necessarily comparable to similarly titled captions of other companies due to different methods of calculation.

The following table presents a reconciliation of net cash inflow from operating activities, the most directly comparable IFRS financial measure, to Free Cash Flow for the periods indicated:

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| | | |
|:---|:---|:---|
|  | **Year Ended<br>December 31,<br>2021** | **Year Ended<br>December 31,<br>2022** |
|  Net cash inflow from operating activities | £62.9 | £28.7 |
|  Purchase of property, plant and equipment | (34.5) | (16.8) |
|  Purchase of intangible assets | (25.3) | (24.5) |
|  Transfer of cash from / (to) escrow in respect of future capital expenditure |  | 0.3 |
|  Reimbursement of leasehold improvement costs | 13.2 |  |
|  Principal element of lease obligations | (8.8) | (11.3) |
|  Interest element of lease obligations | (1.5) | (2.1) |
|  **Free Cash Flow**  | £**6.0** | £**(25.7)** |

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#### Adjusted Operating Profit / Adjusted Operating Profit Margin
We define Adjusted Operating Profit as profit for the year before taking account of finance income, finance costs, tax, exceptional items, share-based payments and amortization of acquisition intangibles. Exceptional items consist of certain cash and non-cash items that we believe are not reflective of the normal course of our business. We identify and determine items to be exceptional based on their nature and incidence or by their significance. As a result, the composition of exceptional items may vary from year to year. Exceptional items currently consist of the impairment of intangible assets, systems and process improvement costs, acquisition costs, integration, and reorganization costs, share-based payments, amortization of acquisition intangibles and fair value adjustments. Adjusted Operating Profit is included in this Annual Report because it is a key metric used internally to assess our financial performance. We also believe that Adjusted Operating Profit is useful to investors, analysts, and others in assessing our performance. We believe that disclosing Adjusted Operating Profit enables a reader to isolate and evaluate the impact of such items on results and allows for a fuller understanding of performance from year to year. Management believes that Adjusted Operating Profit is an appropriate measure of operating performance because it eliminates the impact of expenses that do not relate directly to the performance of the underlying business.

Adjusted Operating Profit Margin is calculated as Adjusted Operating Profit as a percentage of revenue. Adjusted Operating Profit Margin is included in this Annual Report because it is a key metric used internally to

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assess our financial performance. We also believe that Adjusted Operating Profit Margin is useful to investors, analysts, and others in assessing our performance. Adjusted Operating Profit Margin is an appropriate measure of operating performance, as it reflects our ability to turn revenue into profits and because it eliminates the impact of expenses that do not relate directly to the performance of the underlying business.

Adjusted Operating Profit and Adjusted Operating Profit Margin are not IFRS measures of our financial performance and should not be considered as an alternative to profit for the year, or as an alternative to any other performance measure derived in accordance with IFRS. Adjusted Operating Profit and Adjusted Operating Profit Margin should not be construed as an inference that our future results will be unaffected by unusual or other items. Management compensates for these limitations by relying on our IFRS results in addition to using Adjusted Operating Profit and Adjusted Operating Profit Margin as supplemental measures. Our measure of Adjusted Operating Profit and Adjusted Operating Profit Margin are not necessarily comparable to similarly titled captions of other companies due to different methods of calculation.

The following table presents a reconciliation of profit for the year, the most directly comparable IFRS financial measure, to Adjusted Operating Profit and includes the calculation of the Adjusted Operating Profit Margin for the years indicated:

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| | | |
|:---|:---|:---|
|  | **Year Ended<br>December 31,<br>2021** | **Year Ended<br>December 31,<br>2022** |
|  | **(in millions)** | **(in millions)** |
| (Loss) / profit for the year | £4.4 | £(8.5) |
|  Tax (credit) / charge | 0.3 | (7.1) |
|  Finance income | (0.3) | (0.4) |
|  Finance costs | 2.7 | 5.9 |
|  Impairment of intangible assets and assets held for sale<sup>(a)</sup> | 1.1 | 18.3 |
|  System and process improvement costs<sup>(b)</sup> | 7.0 | 6.6 |
|  Acquisition costs<sup>(c)</sup> | 8.3 |  |
|  Integration and reorganization costs<sup>(d)</sup> | 4.7 | 15.7 |
|  Amortization of acquired fair value adjustments<sup>(e)</sup> | 3.1 | 2.7 |
|  Amortization of acquisition intangibles<sup>(f)</sup> | 9.1 | 16.9 |
|  Share-based payments<sup>(g)</sup> | 20.0 | 26.2 |
|  **Adjusted Operating Profit**  | £**60.4** | £**76.3** |
|  Revenue | 315.4 | 361.7 |
|  **Adjusted Operating Profit Margin**  | **19.2%** | **21.1%** |

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(a) During the year ended 31 December 2022, the assets relating to Firefly BioWorks multiplex and assay technology were actively marketed, along with other assets relating to this technology and product range. Accordingly, these assets were classified as held for sale on the Group's balance sheet, which included an allocation of goodwill (£1.6m). The group was not successful in locating a buyer and a decision was made by the directors, in the second half of 2022, to discontinue the group's investment in these products and technology. As such an impairment charge of £18.3m has been recognised within R&D expenses within the income statement, with the carrying amount of the assets classified as held for sale written down to £nil. Further, associated deferred tax liabilities of £4.1m and other liabilities of £0.2m were also released to the income statement, as well as other costs associated with this decision of £0.2m. Details can be found in note 8. The impairment charge is included within research and development expenses. During the year ended 31 December 2021 this charge comprises an impairment of internally developed technology assets relating to AxioMx, following an assessment of the work performed and costs capitalised to date. Following the review, it was concluded that as a result of changes in the scope and nature of the project to which the costs related, and the corresponding usability of historical work performed, £1.1m of internally developed technology assets were impaired. The impairment charge is included within research and development expenses.

(b) Comprises costs of the strategic ERP implementation which do not qualify for capitalisation and, for the year ended 31 December 2022, impairment charges of £0.7m (year ended 31 December 2021: £2.1m), as a result of a software asset developed as part of the ERP project that was no longer required. Such costs are included within selling, general and administrative expenses.

(c) Year ended 31 December 2021: Comprises legal and other professional fees associated with the acquisition of BioVision and other aborted acquisitions. Such costs are included within selling, general and administrative expenses.

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(d) Year ended 31 December 2022: Integration and reorganisation costs relate to the integration of the acquired BioVision business as described in note 29 of £8.6m, the accelerated depreciation of a property lease that is no longer in use of £2.9m and de-listing and other set-up costs associated with having a sole listing on Nasdaq of £4.2m. £0.1m of integration and reorganisation costs are included within research and development expenses and the remaining £15.6m is included within selling, general and administrative expenses.

For the year ended December 31, 2021, the costs related to the integration of the acquired BioVision business of £1.0 million and costs in the U.S. and Asia Pacific, relating to the ongoing reorganization of the Group's property portfolio of £3.0 million. <br>

(e) For the years ended December 31, 2022 and 2021, costs were related to the amortization of fair value of inventory assets relating to the BioVision acquisition, included within cost of sales.

(f) For the years ended December 31, 2022 and 2021, costs consisted of amortization of acquisition intangibles included within research and development expenses of £14.5 million and £6.8 million, respectively, with the remaining £2.4 million and £2.3 million over the same respective periods included within selling, general and administrative expenses.

(g) Comprises share-based payment charges and employers tax contributions thereon. For the years ended December 31, 2022 and 2021, costs consisted of charges included in research and development expenses of £2.6 million and £3.1 million, respectively, with the remaining £23.6 million and £16.8 million over the same respective periods included within selling, general and administrative expense.

#### Return On Capital Employed ("ROCE")
We define ROCE as Adjusted Operating Profit divided by capital employed, which is defined as total assets less current liabilities. We believe that ROCE is a key tool in measuring our financial efficiency and ability to create future growth in value. We attempt to maintain ROCE at a level well above our estimated cost of capital. ROCE is included in this Annual Report because it is a key metric used internally to assess our financial performance. We also believe that ROCE is useful to investors, analysts, and others in assessing our performance.

ROCE is not an IFRS measure of our financial performance and should not be considered as an alternative to profit for the year or as an alternative to any other performance measure derived in accordance with IFRS. ROCE should not be construed as an inference that our future results will be unaffected by unusual or other items. Management compensates for these limitations by relying on our IFRS results in addition to using ROCE as a supplemental measure. Our measure of ROCE is not necessarily comparable to similarly titled captions of other companies due to different methods of calculation.

The following table presents a reconciliation of profit for the year, the most directly comparable IFRS financial measure, to ROCE for the periods indicated:

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| | | |
|:---|:---|:---|
|  | **Year Ended<br>December 31,<br>2021** | **Year Ended<br>December 31,<br>2022** |
|  | **(in millions)** | **(in millions)** |
| (Loss) / profit for the year | £4.4 | £(8.5) |
|  Tax (credit) / charge | 0.3 | (7.1) |
|  Finance income | (0.3) | (0.4) |
|  Finance costs | 2.7 | 5.9 |
|  Impairment of intangible assets and assets held for sale<sup>(a)</sup> | 1.1 | 18.3 |
|  System and process improvement costs<sup>(b)</sup> | 7.0 | 6.6 |
|  Acquisition costs<sup>(c)</sup> | 8.3 |  |
|  Integration and reorganization costs<sup>(d)</sup> | 4.7 | 15.7 |
|  Amortization of acquired fair value adjustments<sup>(e)</sup> | 3.1 | 2.7 |
|  Amortization of acquisition intangibles<sup>(f)</sup> | 9.1 | 16.9 |
|  Share-based payments<sup>(g)</sup> | 20.0 | 26.2 |
|  **Adjusted Operating Profit**  | £**60.4** | £**76.3** |
|  Total Assets | 1000.9 | 1056.6 |
|  Current liabilities | (202.0) | (201.8) |
|  Capital Employed | 798.9 | 854.8 |
|  **ROCE**  | **7.6%** | **8.9%** |

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(a) During the year ended 31 December 2022, the assets relating to Firefly BioWorks multiplex and assay technology were actively marketed, along with other assets relating to this technology and product range.

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Accordingly, these assets were classified as held for sale on the Group's balance sheet, which included an allocation of goodwill (£1.6m). The group was not successful in locating a buyer and a decision was made by the directors, in the second half of 2022, to discontinue the group's investment in these products and technology. As such an impairment charge of £18.3m has been recognised within R&D expenses within the income statement, with the carrying amount of the assets classified as held for sale written down to £nil. Further, associated deferred tax liabilities of £4.1m and other liabilities of £0.2m were also released to the income statement, as well as other costs associated with this decision of £0.2m. Details can be found in note 8. The impairment charge is included within research and development expenses. During the year ended 31 December 2021 this charge comprises an impairment of internally developed technology assets relating to AxioMx, following an assessment of the work performed and costs capitalised to date. Following the review, it was concluded that as a result of changes in the scope and nature of the project to which the costs related, and the corresponding usability of historical work performed, £1.1m of internally developed technology assets were impaired. The impairment charge is included within research and development expenses.

(b) Comprises costs of the strategic ERP implementation which do not qualify for capitalisation and, for the year ended 31 December 2022, impairment charges of £0.7m (year ended 31 December 2021: £2.1m), as a result of a software asset developed as part of the ERP project that was no longer required. Such costs are included within selling, general and administrative expenses.

(c) For the year ended December 31, 2021, costs consisted of legal and other professional fees associated with our acquisition of BioVision.

(d) Year ended 31 December 2022: Integration and reorganisation costs relate to the integration of the acquired BioVision business as described in note 29 of £8.6m, the accelerated depreciation of a property lease that is no longer in use of £2.9m and de-listing and other set-up costs associated with having a sole listing on Nasdaq of £4.2m. £0.1m of integration and reorganisation costs are included within research and development expenses and the remaining £15.6m is included within selling, general and administrative expenses.

For the year ended December 31, 2021, the costs related to the integration of the acquired BioVision business of £1.0 million and costs in the U.S. and Asia Pacific, relating to the ongoing reorganization of the Group's property portfolio of £3.0 million. <br>

(e) For the years ended December 31, 2022 and 2021, costs were related to the amortization of fair value of inventory assets relating to the BioVision acquisition, included within cost of sales.

(f) For the years ended December 31, 2022 and 2021, costs consisted of amortization of acquisition intangibles included within research and development expenses of £14.5 million and £6.8 million, respectively, with the remaining £2.4 million and £2.3 million over the same respective periods included within selling, general and administrative expenses.

(g) Comprises share-based payment charges and employers tax contributions thereon. For the years ended December 31, 2022 and 2021, costs consisted of charges included in research and development expenses of £2.6 million and £3.1 million, respectively, with the remaining £23.6 million and £16.8 million over the same respective periods included within selling, general and administrative expense.

#### Adjusted Diluted Earnings per Share
We define Adjusted Diluted earnings per share as Adjusted Profit for the year divided by the weighted average number of ordinary shares for the purposes of diluted earnings per share. Adjusted Profit for the year used in this calculation is defined as profit for the year plus adjusting items (impairment of intangible assets, system and process improvement costs, acquisition costs, integration and reorganization costs, net of tax effects) for the year ended December 31, 2022 and December 31, 2021. Adjusted Diluted earnings per share is calculated with an adjustment to the weighted average number of shares outstanding to assume conversion of all potentially dilutive ordinary shares. We use Adjusted Diluted earnings per share to measure underlying profitability and to reflect the other adjusted performance measures used.

We measure Adjusted Diluted earnings per share because it is a key metric used internally to assess our financial performance. We also believe that Adjusted Diluted earnings per share is useful to investors, analysts, and others in assessing our performance. Management believes that Adjusted Diluted earnings per share is an appropriate measure of operating performance because it eliminates the impact of expenses that do not relate directly to the performance of the underlying business. Adjusted Diluted earnings per share has limitations as a financial measure, should be considered as supplemental in nature, and is not meant as a substitute for earnings per share measures prepared in accordance with IFRS. Adjusted Diluted earnings per share may not be comparable to other similarly titled metrics of others.

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The following table presents a reconciliation of profit for the year/ period, the most directly comparable IFRS financial measure, to Adjusted profit for the year / period for the years/ periods indicated, which is used in the calculation of Adjusted Diluted earnings per share:

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| | | |
|:---|:---|:---|
|  | **Year Ended<br>December 31,<br>2021<sup>1</sup>** | **Year Ended<br>December 31,<br>2022<sup>1</sup>** |
|  | **(in millions)** | **(in millions)** |
| (Loss) / profit for the year | £4.4 | £(8.5) |
|  Weighted average ordinary shares for the purposes of diluted earnings per share | 228.9 | 231.3 |
|  Diluted earnings per share | 0.019 | (0.037) |
| (Loss) / profit for the year | 4.4 | (8.5) |
|  Impairment of intangible assets and assets held for sale<sup>(a)</sup> | 1.1 | 18.3 |
|  System and process improvement costs<sup>(b)</sup> | 7.0 | 6.6 |
|  Acquisition costs<sup>(c)</sup> | 8.3 |  |
|  Integration and reorganization costs<sup>(d)</sup> | 4.7 | 15.7 |
|  Amortization of acquisition fair value adjustments<sup>(e)</sup> | 3.1 | 2.7 |
|  Amortization of acquisition intangibles<sup>(f)</sup> | 9.1 | 16.9 |
|  Share-based payments<sup>(g)</sup> | 20.0 | 26.2 |
|  Tax effect of items<sup>(a) to (g)</sup> | (10.5) | (20.2) |
|  Adjusted profit for the year | £47.2 | £57.7 |
|  Weighted average ordinary shares for the purposes of diluted earnings per share | 228.9 | 231.3 |
|  Adjusted diluted earnings per share | £0.206 | £0.249 |

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| | |
|:---|:---|
| 1 | Amounts are in millions, except per share data  |

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(a) During the year ended 31 December 2022, the assets relating to Firefly BioWorks multiplex and assay technology were actively marketed, along with other assets relating to this technology and product range. Accordingly, these assets were classified as held for sale on the Group's balance sheet, which included an allocation of goodwill (£1.6m). The group was not successful in locating a buyer and a decision was made by the directors, in the second half of 2022, to discontinue the group's investment in these products and technology. As such an impairment charge of £18.3m has been recognised within R&D expenses within the income statement, with the carrying amount of the assets classified as held for sale written down to £nil. Further, associated deferred tax liabilities of £4.1m and other liabilities of £0.2m were also released to the income statement, as well as other costs associated with this decision of £0.2m. Details can be found in note 8. The impairment charge is included within research and development expenses. During the year ended 31 December 2021 this charge comprises an impairment of internally developed technology assets relating to AxioMx, following an assessment of the work performed and costs capitalised to date. Following the review, it was concluded that as a result of changes in the scope and nature of the project to which the costs related, and the corresponding usability of historical work performed, £1.1m of internally developed technology assets were impaired. The impairment charge is included within research and development expenses.

(b) Comprises costs of the strategic ERP implementation which do not qualify for capitalisation and, for the year ended 31 December 2022, impairment charges of £0.7m (year ended 31 December 2021: £2.1m), as a result of a software asset developed as part of the ERP project that was no longer required. Such costs are included within selling, general and administrative expenses.

(c) For the year ended December 31, 2021, costs consisted of legal and other professional fees associated with our acquisition of BioVision.

(d) Year ended 31 December 2022: Integration and reorganisation costs relate to the integration of the acquired BioVision business as described in note 29 of £8.6m, the accelerated depreciation of a property lease that is no longer in use of £2.9m and de-listing and other set-up costs associated with having a sole listing on Nasdaq of £4.2m. £0.1m of integration and reorganisation costs are included within research and development expenses and the remaining £15.6m is included within selling, general and administrative expenses.

For the year ended December 31, 2021, the costs related to the integration of the acquired BioVision business of £1.0 million and costs in the U.S. and Asia Pacific, relating to the ongoing reorganization of the Group's property portfolio of £3.0 million.

(e) For the years ended December 31, 2022 and 2021, costs were related to the amortization of fair value of inventory assets relating to the BioVision acquisition, included within cost of sales.

(f) For the years ended December 31, 2022 and 2021, costs consisted of amortization of acquisition intangibles included within research and development expenses of £14.5 million and £6.8 million, respectively, with the remaining £2.4 million and £2.3 million over the same respective periods included within selling, general and administrative expenses.

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(g) Comprises share-based payment charges and employers tax contributions thereon. For the years ended December 31, 2022 and 2021, costs consisted of charges included in research and development expenses of £2.6 million and £3.1 million, respectively, with the remaining £23.6 million and £16.8 million over the same respective periods included within selling, general and administrative expense.

C. Research and Development, Patents and Licenses, etc.

See Notes 4 and 6 to our consolidated financial statements included in elsewhere in this Annual Report.

D. Trend Information

Other than as disclosed elsewhere in this Annual Report, we are not aware of any trends, uncertainties, demands, commitments or events since December 31, 2022 that are reasonably likely to have a material adverse effect on our revenues, income, profitability, liquidity or capital resources, or that would cause the disclosed financial information to be not necessarily indicative of future operating results or financial conditions.

E. Critical Accounting Estimates

Our consolidated financial statements are prepared in conformity with IFRS, as issued by the IASB. In preparing our consolidated financial statements, we make judgements, estimates and assumptions about the application of our accounting policies which affect the reported amounts of assets, liabilities, revenue, and expenses. Our critical accounting judgements and sources of estimation uncertainty are described in Note 4 to our consolidated financial statements, which are included elsewhere in this Annual Report.

#### Item 6. Directors, Senior Management and Employees
A. Directors and Senior Management

#### Executive Officers and Board Members
The following table presents information about our current executive officers and board members, including their ages as of the date of this Annual Report:

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| | | |
|:---|:---|:---|
| **Name** | **Age** | **Position** |
|  *Executive officers* |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Alan Hirzel | 55 | Chief Executive Officer and Director |
| &nbsp;&nbsp;&nbsp;&nbsp; Michael Baldock | 59 | Chief Financial Officer and Director |
|  *Non-executive board members* |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Peter Allen<sup>(2)(3)</sup> | 66 | Chairman of the Board |
| &nbsp;&nbsp;&nbsp;&nbsp; Mara Aspinall<sup>(1)(2)(3)</sup> | 60 | Director |
| &nbsp;&nbsp;&nbsp;&nbsp; Mark Capone<sup>(2)</sup> | 59 | Director |
| &nbsp;&nbsp;&nbsp;&nbsp; Sally Crawford<sup>(1)(2)</sup> | 68 | Director |
| &nbsp;&nbsp;&nbsp;&nbsp; Giles Kerr<sup>(1)(2)(3)</sup> | 63 | Director |
| &nbsp;&nbsp;&nbsp;&nbsp; Bessie Lee | 56 | Director |
| &nbsp;&nbsp;&nbsp;&nbsp; Luba Greenwood | 43 | Director |

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(1) Audit and Risk Committee member

(2) Remuneration Committee member

(3) Nomination Committee member

The current business address for our executive officers and board members is c/o Abcam plc, Discovery Drive, Cambridge Biomedical Campus, Cambridge CB2 0AX, United Kingdom.

#### Executive Officers
The following is a brief summary of the business experience of our executive officers.

*Alan Hirzel* has served as our Chief Executive Officer since September 2014 and as a member of our board since January 2014. Prior to joining Abcam, Mr. Hirzel was a partner at Bain & Company where he advised global executives and private equity investors on growth strategy, performance improvement and acquisitions. Early in his career, Mr. Hirzel worked in a variety of roles from life science researcher at Cornell University to new product development research at Kraft Foods. Mr. Hirzel holds BS, MS, and MBA degrees from Cornell University.

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*Michael Baldock* has served as our Chief Financial Officer since February 2020 and as a member of our board since February 2020. From November 2008 to January 2020, Mr. Baldock was a founding partner at Ondra Partners, an independent financial advisory firm. Prior to that, from 2004 to 2007, he was a Managing Director, Global Head of Healthcare and Head of Investment Banking, Americas for HSBC plc, a global universal bank. From 2000 to 2004, he was a Partner of Lazard Frères & Co. LLC, a financial advisory and asset management firm. Mr. Baldock received an A.B. in Social Studies from Harvard College.

#### Non-executive Board Members
The following is a brief summary of the business experience of our non-executive board members.

*Peter Allen* has served as a member of our board since June 2018. Mr. Allen is also currently Non-Executive Chairman of Advanced Medical Solutions plc. He is a Non-Executive Director of Istesso Ltd. Mr. Allen has nearly 30 years' experience as an executive director, non-executive director and chairman in a wide range of life science companies. From 2012 to 2021, Mr. Allen served as the Chairman of Clinigen plc. From 2011 to 2022, Mr. Allen served as a non-executive director and then the Chairman of Oxford Nanopore Technologies plc. From 2015 to 2020, Mr. Allen served as the Chairman of Diurnal Group plc. From 2009 to 2012, Mr. Allen served as Chairman of Proximagen Neurosciences plc, from 2005 to 2013 he served as Chairman of ProStrakan Group plc, including as interim CEO from 2010 to 2011, and he served as CFO and Deputy CEO of Celltech Group plc from 1992 to 2004. Mr. Allen holds a BA in Accountancy and Law from the University of Kent.

*Mara Aspinall* has served as a member of our board since September 2015. Ms. Aspinall is a co-founder and Managing Director of BlueStone Venture Partners, the President and CEO of Health Catalyst Group, part-time Professor of Practice, Diagnostics, College of Health Solutions, a Director of Blue Cross Blue Shield Arizona Inc., Castle Biosciences Inc., DA32, OraSure Technologies Inc. Previously, Ms. Aspinall was President and CEO of Ventana Medical Systems/Roche Tissue Diagnostic. Ms. Aspinall spent twelve years at Genzyme Corporation (now part of Sanofi) as President of Genzyme Genetics and Genzyme Pharmaceuticals. Ms. Aspinall is co-founder of the Biomedical Diagnostics program at Arizona State University, the only institution dedicated to the study of diagnostics as an independent discipline. Ms. Aspinall is also a Fellow of the American Institute for Medical and Biological Engineering. Ms. Aspinall holds a B.A. in International Relations from Tufts University and an M.B.A. from Harvard Business School. Ms. Aspinall is certified in board oversight of cybersecurity from Carnegie Mellon University.

*Mark Capone* has served as a member of our board since January 2021. Mr. Capone is an accomplished life sciences executive. He spent over 17 years with Myriad Genetics, of which he served as CEO and President for five years and helped Myriad Genetics grow into a leading global precision medicine company. Prior to this Mr. Capone spent 17 years with Eli Lilly and Company in positions across the entire value chain. Mr. Capone is currently CEO of Precision Medicine Advisors, a consultancy for molecular diagnostics, pharmaceuticals, and biotechnology organizations, which he founded in 2020. In addition, he is a Non-Executive Director and member of the Compensation Committee for of Owlstone Medical Ltd, a breath biopsy diagnostic company focused on early detection of cancer and precision medicine, and a Non-Executive Director and member of the Audit Committee and Financing Committee of DermTech, a U.S. based company focused on early melanoma detection and other skin applications. Mr. Capone holds a B.Sc in Chemical Engineering from Pennsylvania State University and a M.Sc. in Management and a M.Sc.in Chemical Engineering from Massachusetts Institute of Technology.

*Sally W. Crawford* has served as a member of our board since August 2021. Ms. Crawford has held a number of senior leadership and board positions in the healthcare industry spanning more than three decades. She served as Chief Operating Officer of Healthsource Inc., a publicly held managed care organization, from its founding in April 1985 until January 1997. Ms. Crawford has extensive board experience, and currently serves on the Board of Directors of Hologic, Inc., Insulet Corporation and Prolacta Bioscience. She is also the Lead Independent Director at Hologic, Inc., the current Compensation Chair at ZimVie and Prolacta Bioscience and the former Compensation Chair at Hologic, Inc and Insulet Corporation. Ms. Crawford holds a B.A. in English from Smith College and an M.S. in Communications and Media Studies from Boston University.

*Giles Kerr* has served as a member of our board since December 2018. Mr. Kerr is currently a Non-Executive Director of Arix Bioscience plc, Senior plc and Oxford Science Enterprises (formerly known as Oxford Sciences Innovation) and is the Chairman of Paypoint plc. Since 1990, Mr. Kerr has served in a variety of increasingly senior roles at Amersham plc, including Chief Financial Officer and a board member from 1997 to 2004, when the company was acquired by GE Healthcare. Prior to his role at Amersham, Mr. Kerr was a National Partner with Arthur Andersen & Co. Mr. Kerr was Director of Finance of the University of Oxford from

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2005 until 2018 and was previously a Director of Victrex plc, BTG plc, Quanta Dialysis Technologies and Elan Corporation Inc. Mr. Kerr holds a B.A. in Economics from the University of York.

*Bessie Lee* has served as a member of our board since January 2021. Ms. Lee is based in China and is the CEO, Greater China of JonesLangLaSalle and Founder of Withinlink (Shanghai) Investment Management Co Ltd, a China-based venture capital firm and start-up incubator focused on marketing technology. Prior to this Ms. Lee spent almost three decades at WPP plc and served as CEO, China from 2013 to 2017. In addition, Ms. Lee served as CEO for Mindshare and GroupM. Ms. Lee is currently a Non-Executive Director of Electrocomponents plc, Homeplus Digital Co Ltd (formerly China Networks Systems Co Ltd) and Shanghai Fuge Information Technology Co Ltd. Ms. Lee holds a B.A. in German and English, from Wen Tzao Ursula Foreign Language College, a B.Sc. in Mass Communications and a M.S. in Communications both from Illinois State University.

*Luba Greenwood* has served as a member of our board since September 2022. Ms. Greenwood has held a number of leadership and board positions in the healthcare, biotech, and digital health industries. Currently, Ms. Greenwood is the managing partner of the Dana Farber Cancer Institute Venture Fund, Binney Street Capital ("BSC"), a venture fund she has built and launched, and she is also the CEO of Kojin Therapeutics, a BSC portfolio company. In addition she is a Non-Executive Director of Massachusetts Biotechnology Council, Inc., BenchSci, and In8Bio Inc. Ms. Greenwood has held leadership positions at Google Life Sciences and at F. Hoffman-La Roche, from 2018 to 2019 and 2015 to 2018, respectively. She is currently a lecturer in engineering sciences at Harvard University, since 2019. Ms. Greenwood holds a law degree from Northeastern University School of Law.

#### Board Diversity
The table below provides certain information regarding the diversity of our board of directors as of the date of this Annual Report.

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Board Diversity Matrix** | **Board Diversity Matrix** | **Board Diversity Matrix** | **Board Diversity Matrix** | **Board Diversity Matrix** |
|  Country of Principal Executive Offices | England | England | England | England |
|  Foreign Private Issuer | Yes | Yes | Yes | Yes |
|  Disclosure Prohibited under Home Country Law | No | No | No | No |
|  Total Number of Directors | 9 | 9 | 9 | 9 |
|  | **Female** | **Male** | **Non-**<br>**Binary** | **Did Not<br>Disclose<br>Gender** |
|  **Part I: Gender Identity** |  |  |  |  |
|  Directors | 4 | 5 |  |  |
|  **Part II: Demographic Background** |  |  |  |  |
|  Underrepresented Individual in Home Country Jurisdiction |  |  |  |  |
|  LGBTQ+ |  |  |  |  |
|  Did Not Disclose Demographic Background |  |  |  |  |

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B. Compensation

#### Executive Officer Remuneration
The following table presents the individual compensation and benefits provided to our current executive officers during the fiscal year ended December 31, 2022:

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| | | | | |
|:---|:---|:---|:---|:---|
| **Name** | **Salary** | **Bonus<sup>(1)</sup>** | **All Other<br>Compensation<sup>(2)</sup>** | **Total<sup>(3)</sup>** |
|  | **(in £)** | **(in £)** | **(in £)** | **(in £)** |
|  *Executive officers* |  |  |  |  |
|  Alan Hirzel | 629760 | 2316462 | 70796 | 3017018 |
|  Michael Baldock | 408000 | 747853 | 123472 | 1279325 |

---

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(1) Amounts shown reflect bonuses awarded, both in cash and shares, following the achievement of performance goals. The figures included under Bonus in the table above reflect the total bonus award for performance during the year ended December 31, 2022 and the 2019 Long Term Incentive Plan award for Alan Hirzel and the 2020 Long Term Incentive Plan award for Michael Baldock which vested in November 14, 2022, as well as the second tranche of Michael Baldock's Recruitment Award which vested on February 3, 2022.

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(2) Amounts shown represent the value of benefits paid by us, including health benefit payments and pension contributions over the fiscal year ended December 31, 2022.

(3) Total compensation set out in this table does not include the value of options to acquire our ordinary shares or awards granted in 2022 to or held by our current executive officers during 2022, which is described below in "—Equity Compensation Arrangements."

#### Executive Officer Service Agreements

#### Alan Hirzel
We entered into a service agreement with Alan Hirzel, which became effective on September 9, 2014. This agreement entitles Mr. Hirzel to receive an initial annual base salary of £320,000 (which, following a number of increases, was increased to £629,760 on July 1, 2020 and increased to £654,950 on January 1, 2023) and an opportunity to earn an annual discretionary performance-based bonus of up to 150% of his annual base salary (with an initial target of 75% of his annual base salary), subject to the achievement of performance goals determined in accordance with our annual bonus plan. Of any bonus earned, at least 30% of such bonus amount will be paid in the form of a deferred share award that is expected to vest in full on the second anniversary of the date of grant.

Mr. Hirzel is also enrolled in our defined contribution pension scheme at a contribution rate of at least 8% of his annual base salary, with at least 5% of which Mr. Hirzel must contribute and at least 3% of which we will contribute on Mr. Hirzel's behalf. However, we provide Mr. Hirzel with an allowance equal to 5% of his annual base salary, which will be applied to Mr. Hirzel's contribution to the pension scheme or may instead be applied towards other benefits within our flexible benefits scheme. If the annual and/or lifetime ceiling for pension contributions has already been reached, Mr. Hirzel can take this allowance as additional compensation. Additionally, Mr. Hirzel is entitled to the following benefits: (i) eligibility to participate in our life insurance scheme with coverage equal to at least five times his annual base salary, (ii) private medical insurance coverage for himself, his partner and his children (while under age 18 or pursuing full-time education) at our expense, (iii) an annual health screening and (iv) annual tax compliance support for his statutory filings in the United Kingdom or United States.

Either party may terminate the service agreement by giving the other party at least 12 months' written notice, unless Mr. Hirzel is terminated for cause (as described in Mr. Hirzel's service agreement) or we terminate Mr. Hirzel and make a payment in lieu of notice equal to his base salary and any benefits to which he would otherwise be entitled for any remaining notice period. Mr. Hirzel is obliged to seek alternative income during this period (subject to the restrictive covenants referenced below), and such payment in lieu of notice will be reduced by the amount of any alternative income Mr. Hirzel receives. Mr. Hirzel's service agreement also contains restrictive covenants pursuant to which he has agreed to refrain from competing with us or soliciting our key employees or customers for a period of six months following his termination of employment.

#### Michael Baldock
We entered into a service agreement with Michael Baldock, which became effective on February 3, 2020 and continued in effect throughout 2022. This agreement entitled Mr. Baldock to receive an initial annual base salary of £400,000 (which was subsequently increased to £408,000 on July 1, 2020) and an opportunity to earn an annual discretionary performance-based bonus of up to 150% of his annual base salary (with an initial target of 75% of his annual base salary), subject to the achievement of performance goals determined in accordance with our annual bonus plan. Of any bonus earned, at least 30% of such bonus amount would be paid in the form of a deferred share award that is expected to vest in full on the second anniversary of the date of grant.

During 2022, Mr. Baldock continued to be enrolled in our defined contribution pension scheme at a contribution rate of at least 8.0% of his annual base salary, with at least 5.0% of which Mr. Baldock was required to contribute and at least 3.0% of which we would contribute on Mr. Baldock's behalf. However, we provided Mr. Baldock with an allowance equal to 5.0% of his annual base salary, which would be applied to Mr. Baldock's contribution to the pension scheme or may instead be applied towards other benefits within our flexible benefits scheme. If the annual and/or lifetime ceiling for pension contributions has already been reached, Mr. Baldock can take this allowance as additional compensation. Additionally, Mr. Baldock was entitled to the following benefits: (i) eligibility to participate in our life insurance scheme with coverage equal to at least five times his annual base salary, (ii) private medical insurance coverage for himself, his partner and his children (while under age 18 or pursuing full-time education) at our expense, (iii) certain relocation expenses, (iv) an annual health screening and (v) annual tax compliance support for his U.K. and U.S. statutory filings.

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Effective January 1, 2023, we entered into a new at-will service agreement with Mr. Baldock in connection with his relocation to the U.S. This agreement entitles Mr. Baldock to receive an initial annual base salary of $610,000, which is inclusive of director's fees to which he may be entitled as a director of Abcam plc or of any other positions he may hold on behalf of Company, and an opportunity to earn an annual discretionary performance based bonus of up to 150% of his annual base salary, subject to the exceeding performance goals determined in accordance with our annual bonus plan (with an initial target of 75% of his annual base salary), subject to the achievement of performance goals determined in accordance with our annual bonus plan. Of any bonus earned, 30% of such bonus amount would be paid in the form of a deferred share award that is expected to vest in full on the second anniversary of the date of grant. Mr. Baldock is also entitled to participate in certain health and welfare programs maintained by us in accordance with their terms. Furthermore, in the event that the Company terminates Mr. Baldock's employment without cause, he is entitled to receive (i) 12 months of base salary continuation, (ii) vesting of deferred shares issued in respect of prior year bonuses on the relevant vesting date, (iii) continued eligibility to vest in certain awards granted under the Company's Long-Term Incentive Plan upon the attainment of the relevant performance conditions (with awards that were not granted in respect of Mr. Baldock's appointment as a director being subject to pro-ration) and (iv) up to 12 months of COBRA continuation. The Company will also consider Mr. Baldock fairly and reasonably for a pro-rated annual bonus for the year of termination. Mr. Baldock has also agreed not to compete with us or solicit our employees or customers for a period of 6 months after his resignation or termination by the Company for cause.

#### Equity Compensation Arrangements
We maintain the following share schemes under which equity-based awards are outstanding or could be issued: (i) the Annual Bonus Plan; (ii) the Share Incentive Plan; (iii) the Long-Term Incentive Plan and (iv) the Share Option Scheme; (v) the Profitable Growth Incentive Plan; (vi) the Abcam Growth Plan (as defined below). As a foreign private issuer, we may follow our home country corporate governance rules instead of certain corporate governance requirements of Nasdaq, and we intend to be exempt from Nasdaq regulations that require a listed U.S. company to seek shareholder approval for the implementation of certain equity compensation plans and issuances of ordinary shares.

#### Annual Bonus Plan
Our board of directors adopted The Abcam plc Annual Bonus Plan (the "Annual Bonus Plan") on September 18, 2012, which has been subsequently amended.

*Eligibility, Awards, and Administration* 

All employees who devote substantially all of their working hours to us are eligible to receive awards under the Annual Bonus Plan. However, we typically only grant Annual Bonus Plan awards to employees in executive and senior management positions. Under the Annual Bonus Plan, each participant has a target bonus that is based on a percentage of the employee's base salary. The extent to which target bonus amounts are paid out depends on whether certain performance targets are achieved. These performance targets currently involve financial, strategic and individual criteria, and bonuses awarded under the Annual Bonus Plan can be up to twice the target bonus amounts. Under the Annual Bonus Plan, our Remuneration Committee may pay bonuses in the form of cash awards and/or deferred share awards. Our current policy is to grant 70% of each bonus as a cash award and 30% of each bonus as a deferred share award. Deferred share awards may be in the form of either a conditional right to acquire our ordinary shares or nil cost options, which convey a right to acquire a certain number of our ordinary shares for no payment or nominal payment. We may not grant awards under the Annual Bonus Plan if such awards would cause the number of ordinary shares committed under the Annual Bonus Plan and any other Company employee share plan in the preceding 10 year period to exceed 10% of our ordinary shares. The Annual Bonus Plan is administered by our Remuneration Committee, which may make, amend, or rescind regulations for the administration of the Annual Bonus Plan.

*Vesting, Exercise, and Clawback* 

Cash awards granted under the Annual Bonus Plan are fully vested upon grant. Deferred share awards generally vest on the second anniversary of the date that is ten business days from the date on which we announce our preliminary results for the relevant fiscal year, subject to applicable share dealing restrictions and the achievement of performance targets. Our Remuneration Committee may, in its discretion, settle any deferred share awards in cash instead of ordinary shares. Furthermore, our Remuneration Committee may require the forfeiture of any unpaid cash award or the reduction or cancellation of certain deferred share awards in the event

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there is (i) a material adverse adjustments to our audited consolidated accounts for any accounting period ending before the vesting of the award or (ii) reasonable evidence of fraud or other gross misconduct or, for awards granted after July 1, 2015, material dishonesty, risk management failure or material wrongdoing on the part of the award recipient.

Upon termination of employment, all unvested awards and unexercised nil cost options shall lapse, unless such termination of employment is due to illness, permanent disability, redundancy retirement (by way of mutual agreement with us), certain changes to the employee's employing entity or any other reason our Remuneration Committee may determine. Upon such a termination and unless our Remuneration Committee determines otherwise, deferred shares awards shall remain outstanding with vested nil cost options remaining exercisable for 12 months following such termination, unless the award recipients are U.S. tax residents, in which case deferred share awards shall become fully vested.

*Certain Transactions* 

Upon certain change in control events such as takeovers, compulsory acquisitions, reconstructions, amalgamations and wind-ups, all deferred share awards that are not substituted shall fully vest on the date of the applicable event. Furthermore, if our Remuneration Committee becomes aware that we will be affected by a demerger, distribution (other than an ordinary dividend) or other transaction, it may accelerate vesting of all or a portion of unvested and outstanding deferred share awards.

*Amendment and Termination* 

Our Remuneration Committee may, at any time, amend the Annual Bonus Plan, except that no amendment may be made that would adversely affect the existing rights of award recipients, unless the affected award recipients have approved such amendment.

#### Company Share Option Plan
Our board of directors adopted the Company Share Option Plan 2009 (the "CSOP") on November 5, 2009, which was subsequently amended. As of June 30, 2019 and 2020, we had no ordinary shares authorized for issuance under the CSOP. We do not intend to grant equity awards under the CSOP in the future.

#### Long-Term Incentive Plan
Our board of directors adopted the Long-Term Incentive Plan (the "LTIP") on November 3, 2008, which was subsequently amended.

*Eligibility, Awards, and Administration* 

All our employees are eligible to participate in the LTIP. Under the LTIP, our Remuneration Committee may grant share-based incentive awards to attract, motivate and retain the talent for which we compete. LTIP awards can be in the form of conditional rights to acquire our ordinary shares (typically for non-U.K. tax residents), or nil cost options (typically for U.K. tax residents), which convey a right to acquire a certain number of our ordinary shares for no payment or nominal payment. LTIP awards vest based on achievement of certain performance targets, which may involve financial and strategic criteria. We may not grant awards under the LTIP if such awards would cause the number of ordinary shares committed under the LTIP and any other Company employee share plan in the preceding 10 year period to exceed 10% of our ordinary shares. The LTIP is administered by our Remuneration Committee, which may make and amend regulations for the implementation and administration of the LTIP.

The current Executive Directors will not receive awards under the LTIP while the Profitable Growth Incentive Plan ("PGIP") described below is in operation. One-off recruitment-related LTIP awards may be granted to any new Executive Directors hired during the plan period.

*Vesting, Exercise, and Clawback* 

LTIP awards typically vest on the third anniversary of the date on which they are granted. The portion of the LTIP award that vests depends on how we perform as a company over a three-year performance period (starting with the year in which the LTIP award is granted), as measured against predefined performance requirements.

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Upon vesting, shares are immediately transferred to employees who hold conditional rights to acquire our ordinary shares and nil cost options become exercisable. Nil cost options generally remain exercisable until the tenth anniversary of the grant date, subject to earlier termination upon a cessation of employment. Our Remuneration Committee may impose post-exercise retention requirements on shares received by a participant. Our Remuneration Committee may reduce or cancel any unvested LTIP award in the event there is a material adverse adjustment to our audited consolidated accounts for any accounting period ending before the vesting of the award. Additionally, our Remuneration Committee may reduce or reclaim any LTIP award in the event there is a material adverse adjustment to our audited consolidated accounts due to fraud or other gross misconduct, material dishonesty, material failure of risk management or material wrongdoing on the part of the employee for a period of two years following the vesting of the award or throughout any period that the employee is subject to a work related criminal investigation.

Upon termination of employment, all unvested awards and unexercised nil cost options shall lapse, unless our Remuneration Committee determines otherwise for reasons including illness, disability, injury, death, redundancy or retirement. Upon such a termination and unless our Remuneration Committee determines otherwise, LTIP awards shall vest as to a prorated portion of the award based on the time elapsed between the grant date and the termination date and the achievement of the predefined performance requirements as of the termination date.

*Certain Transactions* 

Upon certain change in control events described in the LTIP plan rules, our Remuneration Committee will notify each LTIP participant of the event and determine, in its absolute discretion, what portion of the LTIP awards will become vested, taking into account considerations such as the time elapsed from the grant date and the achievement level of the predetermined performance requirements. Alternatively, LTIP awards may be cancelled and substituted with replacement awards of equivalent value covering shares of the new controlling entity. In the event of our voluntary winding up, all LTIP awards will fully vest. Upon a merger or demerger that does not constitute a change in control, our Remuneration Committee will have discretion regarding whether to vest or adjust any portion of outstanding LTIP awards. Our Remuneration Committee has the discretion to adjust the exercise period for nil cost options in light of the previously described events.

*Amendment and Termination* 

Our Remuneration Committee may, at any time, amend the regulations for implementing and administering the LTIP, except that no amendment may be made that would materially affect the subsisting rights of award recipients unless a majority of affected award recipients have consented to and sanctioned such amendment. Certain amendments to the LTIP rules require our approval in a general meeting, including the limit on the aggregate number of shares over which awards can be made and the price at which shares may be acquired under an award. The LTIP will terminate on the earlier of the fifth anniversary of the LTIP's adoption or renewal or another termination date determined by our Remuneration Committee.

#### Share Incentive Plan
We adopted the Abcam plc Share Incentive Plan (the "SIP") on September 26, 2008, which was subsequently amended.

*Eligibility, Awards, and Administration* 

The SIP is an HMRC approved plan, which we maintained until October 2018 and under which all U.K.-based employees were eligible to participate and purchase our ordinary shares. These shares are referred to as "partnership shares" and are held in trust on behalf of the employees. For every partnership share bought by the employee up to a limit of £1,800 per tax year, we award the employee one matching share, provided the employee remained employed with us for a period of at least three years. Additionally, until October 2018, we awarded "free shares" to employees with a value of up to £3,600 per tax year, and we also awarded "dividend shares" to employees that were equivalent to the cash dividends paid in respect of shares held on behalf of SIP participants.

We do not intend to make awards under the SIP in the future (with the exception of dividend reinvestments). The SIP is administered by our board of directors, which may make and amend regulations for the implementation and administration of the SIP.

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*Vesting and Holding* 

Partnership shares that are purchased with employee contributions are fully vested upon acquisition by the employee. Matching shares and free shares that we grant are subject to a holding period of at least three years (but no more than five years). At our board of directors' discretion, granting of free shares may be conditioned upon the achievement of certain performance targets that it specifies.

Upon a termination of employment, any shares held on behalf of such employee will be removed from the SIP and all contributions made by such employee will be returned as soon as practicable following the termination date. Any matching shares or free shares held on behalf of such employee (whether during the accumulation period or the holding period) shall be forfeited upon such employee's termination, unless such termination is due to death, injury, disability, retirement, redundancy, certain changes to the participant's employing entity, or certain transferences. Upon such a termination, the participant is entitled to retain any matching shares and free shares held on his or her behalf.

*Amendment and Termination* 

Our board of directors may, at any time, amend the SIP plan rules, except that no amendment may be made which would materially affect the subsisting rights of award recipients unless a majority of affected award recipients have consented to and sanctioned such amendment and except in other limited circumstances (including where such amendment would cause the SIP to cease to be a qualified share incentive plan under applicable U.K. law).

#### Share Option Scheme
Our board of directors adopted the 2005 Share Option Scheme, which was subsequently amended, and 2015 Share Option Plan (ISO/Unapproved) (together, the "Share Option Scheme" or "SOS") on October 31, 2005 and November 5, 2015, respectively. We do not intend to grant equity awards under the SOS in the future, however there are vested but unexercised stock options outstanding from previous awards granted.

#### Profitable Growth Incentive Plan
Our board of directors adopted the PGIP on June 1, 2021 and it was approved by shareholders on July 1, 2021. The current executive directors' awards under the PGIP were granted on July 14, 2021, and no further awards will be made to them under the PGIP during the remainder of the plan period. PGIP awards may be granted to any new executive director hires during the remainder of the plan period, and to any other eligible employee of the Company.

*Eligibility, Awards, and Administration* 

Under the PGIP, our Remuneration Committee may grant share-based incentive awards to attract, motivate and retain the talent for which we compete. PGIP awards are in the form of conditional rights to acquire our ordinary shares. PGIP awards vest based on achievement of revenue growth targets, underpinned by ROCE. All of our employees are eligible to participate in the PGIP. However, we typically only grant PGIP awards to employees in executive and senior management positions.

We may not grant an award that would cause the number of shares allocated under the Plan to exceed such number as represents 3.5% of the ordinary share capital of the Company then in issue. No eligible employee may be granted an Award that would, at the time it is granted, exceed such number of shares as represents 0.6% of the ordinary share capital of the Company. We also must not grant an Award that would cause the number of Shares allocated under the Plan and under any other employee share plan adopted by the Company to exceed such number as represents 10% of the ordinary share capital of the Company then in issue. The PGIP is administered by our Remuneration Committee, which may make and amend regulations for the implementation and administration of the PGIP.

*Vesting, Exercise, and Clawback* 

PGIP awards currently outstanding vest subject to a three and a half year performance period from July 1, 2021 to December 31, 2024, or, for a newly appointed executive director, such other period set by the Remuneration Committee in its discretion. The portion of PGIP awards that vests depends on how we perform as

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a company over the performance period, as measured against predefined performance requirements. Upon vesting, shares are generally immediately transferred to employees. PGIP awards for the executive directors include a post-vesting holding period. Our Remuneration Committee may reduce or cancel any unvested PGIP award in the event there is a material adverse adjustment to our audited consolidated accounts for any accounting period ending before the vesting of the award. Additionally, our Remuneration Committee may reduce or reclaim any PGIP award in the event there is a material adverse adjustment to our audited consolidated accounts due to fraud or other gross misconduct, material dishonesty, material failure of risk management or material wrongdoing on the part of the employee during the period ending on the fifth anniversary of the grant date or throughout any period that the employee is subject to a work-related criminal investigation.

Awards will be subject to a cap at vesting. No Award will vest at a value that exceeds the initial value of the award, calculated by multiplying the number of shares under award by three times the average closing share price over the 30 dealing days leading up to the date of the General Meeting (the 'Cap'). If the value of any vested shares exceeds the Cap then awards will be reduced accordingly.

The value at vesting is calculated by multiplying the number of shares that are due to vest by the average closing price of shares over the 30 dealing days prior to the vesting date (or such other averaging period as the Remuneration Committee determines).

Upon termination of employment, all unvested awards shall generally lapse, unless in the event of certain changes to the participant's employing entity, or certain transferences or if our Remuneration Committee determines otherwise for reasons including illness, disability, injury, redundancy, or retirement. Upon such a termination the Remuneration Committee may determine, in its discretion, that up to 50% of the unvested awards held by a participant will lapse. The award, or the balance of the award, will usually continue until the normal vesting and release dates. In determining the extent to which the award, or balance of the award, vests the Remuneration Committee will, in its discretion, apply the following: the extent to which the performance condition has been satisfied, any downwards discretion, and the Cap. The vested award will also be reduced to reflect the proportion of the vesting period that has elapsed on cessation. The holding period will continue to apply.

Where a participant dies, the award will vest and be released at the time of the participant's death. The extent to which an award vests will be determined by the Remuneration Committee in its discretion by applying the following: the extent to which the performance condition has been satisfied, any downwards discretion, and the Cap. The vested award will also be reduced to reflect the proportion of the vesting period that has elapsed on death.

If an award that does not lapse was subject to a restriction, the restriction will continue to apply following cessation of employment unless the participant ceases by reason of death. If a participant is dismissed for gross misconduct during a restricted period, the shares may be forfeited on the date of cessation.

*Certain Transactions* 

In the event of a change of control of the Company, unvested PGIP awards will vest to the extent determined by the Remuneration Committee, by applying the following: the extent to which the performance condition has been satisfied at the time of the change of control including consideration of any other performance factors that the Remuneration Committee considers relevant, any downwards discretion and the Cap. The vested award will also be reduced to reflect the proportion of the vesting period that has elapsed at the date of the change of control. Awards will be released immediately following vesting.

Alternatively, the Remuneration Committee may permit awards to be exchanged for shares in the acquiring company. If the change of control is an internal re-organization of the Group or if the Remuneration Committee so decides, participants will be required to exchange their awards (rather than awards vesting and being released as part of the transaction).

If other corporate events occur such as a winding-up of the Company, a variation of share capital, demerger, delisting, special dividend or other event which, in the opinion of the Remuneration Committee, may affect the current or future value of shares, the Remuneration Committee may determine that awards will vest or lapse. The extent to which an award vests will be determined by the Remuneration Committee by applying the following: the extent to which the performance condition has been satisfied, any downwards discretion, and the Cap. The vested award will also be reduced to reflect the proportion of the vesting period that has elapsed at the date of the change of control. Awards will be released immediately following vesting.

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*Amendment and Termination* 

Our Remuneration Committee may, at any time, amend the regulations for implementing and administering the PGIP, except that no amendment may be made that would materially affect the subsisting rights of award recipients unless a majority of affected award recipients have consented to and sanctioned such amendment. Certain amendments to the PGIP rules require approval in a general meeting, including the limit on the aggregate number of shares over which awards can be made and the price at which shares may be acquired under an award. The PGIP will terminate on the earlier of December 31, 2024 or another termination date determined by our Remuneration Committee.

#### Abcam Growth Plan
Our Remuneration Committee adopted the Abcam Growth Plan ("AGP") on September 10, 2021. The AGP is the successor equity plan to AbShare described above. It aims to build on AbShare's success by incentivizing and rewarding employees globally in shares on the achievement of annual and long-term goals.

*Eligibility, Awards, and Administration* 

The AGP provides for the grant of fully paid ordinary shares to employees who are employed on a permanent contract or equivalent basis, except participants in the PGIP. Participants in PGIP are not eligible to participate in the AGP.

The AGP is a three year performance-based equity plan which awards 60% of base salary in conditional shares across two components: (i) annual incentive with a face value of 10% of salary per annum released after each year subject to operational and financial performance; and (ii) strategic incentive released in April 2025 subject to the same financial performance conditions as the PGIP described above. Vesting of any AGP award is subject to participants being employed on the respective vesting date. The AGP is administered by our board of directors who has authority to adopt any regulations necessary for administering the AGP and has final authority to interpret and construe AGP provisions.

*Vesting and Holding* 

Awards vest at the end of their respective performance period to the extent that our board of directors has determined the financial performance criteria has been met. Each Annual Incentive award vests subject to a 12 month performance period (Jan 1 to Dec 31). Strategic Incentive awards vest subject to a three-and-a-half-year performance period from July 1, 2021 to December 31, 2024. The portion of AGP awards that vest depends on how we perform as a company over each performance period, as measured against predefined performance requirements. Upon vesting, shares are generally immediately transferred to employees.

Our Remuneration Committee may reduce or cancel any unvested AGP award in the event there is a material adverse adjustment to our audited consolidated accounts for any accounting period ending before the vesting of the award. Additionally, our Remuneration Committee may reduce or reclaim any AGP award in the event there is a material adverse adjustment to our audited consolidated accounts due to fraud or other gross misconduct, material dishonesty, material failure of risk management or material wrongdoing on the part of the employee during the period ending on the first anniversary of the vesting date or throughout any period that the employee is subject to a work-related criminal investigation.

*Leavers* 

Upon a termination of employment, AGP awards will lapse, unless such termination of employment is due to death, illness, injury, retirement, disability, redundancy, certain changes to the participant's employing entity, certain transferences or any other reason our board of directors may determine. Upon such a termination and unless our Remuneration Committee determines otherwise, AGP awards shall vest as to a prorated portion of the award based on the time elapsed between the grant date and the termination date and the achievement of the predefined performance requirements as of the termination date.

*Certain Transactions* 

In the event of a change of control of the Company, unvested AGP awards will vest to the extent determined by the Remuneration Committee, by applying the following: the extent to which the performance condition has

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been satisfied at the time of the change of control including consideration of any other performance factors that the Remuneration Committee considers relevant, and any downwards discretion. The vested award will also be reduced to reflect the proportion of the vesting period that has elapsed at the date of the change of control. Awards will be released immediately following vesting.

Alternatively, the Remuneration Committee may permit awards to be exchanged for shares in the acquiring company. If the change of control is an internal re-organization of the Group or if the Remuneration Committee so decides, participants will be required to exchange their awards (rather than awards vesting and being released as part of the transaction).

If other corporate events occur such as a winding-up of the Company, a variation of share capital, demerger, delisting, special dividend, or other event which, in the opinion of the Remuneration Committee, may affect the current or future value of shares, the Remuneration Committee may determine that awards will vest or lapse. The extent to which an award vests will be determined by the Remuneration Committee by applying the following: the extent to which the performance condition has been satisfied and any downwards discretion. The vested award will also be reduced to reflect the proportion of the vesting period that has elapsed at the date of the change of control. Awards will be released immediately following vesting.

*Amendment and Termination* 

Our board of directors may, at any time, amend the AGP plan rules, except that no amendment may be made that would disadvantage the existing rights of participants, unless consent from a majority of the affected participants is obtained. Additionally, our board of directors may pass a resolution at any time terminating AGP, provided such termination does not prejudice the existing rights of participants.

The following table summarizes the number of outstanding shares and options granted to executive officers and non-employee directors, as of December 31, 2022:

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Name** | **Ordinary<br>Shares** | **Ordinary<br>Shares<br>Underlying<br>Options** | **Exercise<br>Price Per<br>Ordinary<br>Share (in £)** | **Grant Date** | **Expiration<br>Date (if<br>applicable)** | **Plan Name** |
|  *Executive officers* |  |  |  |  |  |  |
|  Alan Hirzel | 44575 |  |  |  |  |  |
|  |  | 1360486 |  | 07/14/2021 | 04/14/2025 | PGIP |
|  | 27445 |  |  | 11/04/2014 |  | LTIP |
|  | 31666 |  |  | 11/06/2015 |  | LTIP |
|  | 28484 |  |  | 11/04/2016 |  | LTIP |
|  | 21809 |  |  | 11/04/2017 |  | LTIP |
|  | 61502 |  |  | 11/07/2018 |  | LTIP |
|  | 77275 |  |  | 11/14/2019 |  | LTIP |
|  |  | 178832 |  | 12/07/2020 | 12/07/2023 | LTIP |
|  | 10538 |  |  | 11/04/2014 |  | ABP |
|  | 16937 |  |  | 10/26/2015 |  | ABP |
|  | 9169 |  |  | 10/26/2016 |  | ABP |
|  | 8502 |  |  | 10/26/2017 |  | ABP |
|  | 10308 |  |  | 10/26/2018 |  | ABP |
|  | 6888 |  |  | 10/25/2019 |  | ABP |
|  | 4389 |  |  | 10/26/2020 |  | ABP |
|  |  | 15401 |  | 10/26/2021 | 09/23/2023 | ABP |
|  |  | 8279 |  | 03/25/2022 | 03/28/2024 | ABP |
|  | 1459 |  |  | *<sup>(1</sup> <sup>)</sup>* |  | SIP Partnership |
|  | 2867 |  |  | *<sup>(1</sup> <sup>)</sup>* |  | SIP Free |
|  | 1459 |  |  | *<sup>(1</sup> <sup>)</sup>* |  | SIP Matching |
|  | 344 |  |  | *<sup>(1</sup> <sup>)</sup>* |  | SIP Dividend |
|  |  | 19 |  | 04/17/2020 | 04/17/2023 | SIP Dividend |
|  **Total** | **365616** | **1563017** |  |  |  |  |
|  Michael Baldock | 10910 |  |  |  |  |  |

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Name** | **Ordinary<br>Shares** | **Ordinary<br>Shares<br>Underlying<br>Options** | **Exercise<br>Price Per<br>Ordinary<br>Share (in £)** | **Grant Date** | **Expiration<br>Date (if<br>applicable)** | **Plan Name** |
|  |  | 680243 |  | 07/14/2021 | 04/14/2025 | PGIP |
|  |  | 57928 |  | 12/07/2020 | 12/07/2023 | LTIP |
|  | 20236 |  |  | 03/09/2020 |  | LTIP |
|  | 4976 |  |  | 03/09/2020 |  | LTIP |
|  | 3301 |  |  | 03/09/2020 |  | LTIP |
|  |  | 13758 |  | 03/09/2020 | 03/02/2023 | LTIP |
|  |  | 5364 |  | 03/25/2022 | 03/28/2024 | ABP |
|  |  | 10189 |  | 10/26/2021 | 09/23/2023 | ABP |
|  | 1157 |  |  | 10/26/2020 |  | ABP |
|  **Total** | **40580** | **767482** |  |  |  |  |
|  *Non executive board members* |  |  |  |  |  |  |
|  Peter Allen | 23247 |  |  |  |  |  |
|  Mara Aspinall | 17582 |  |  |  |  |  |
|  Mark Capone | 1584 |  |  |  |  |  |
|  Sally Crawford | 15609 |  |  |  |  |  |
|  Luba Greenwood |  |  |  |  |  |  |
|  Giles Kerr | 3204 |  |  |  |  |  |
|  Bessie Lee | 1019 |  |  |  |  |  |

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(1) CEO has partnership shares under SIP each year from 2013 – 2017, with free and matching shares released after 3 years over 2016 – 2020, and dividend reinvestment shares released after a further 3 years over 2016 – 2023.

#### Non-Employee Director Remuneration
The following table presents the individual compensation and benefits provided to our current non-employee directors during the year ended December 31, 2022:

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| | | | |
|:---|:---|:---|:---|
|  | **Fees Delivered<br>in Cash (in £)** | **Fees Delivered<br>in Shares (in £)** | **Total Fees<br>(in £)** |
|  *Non-executive board members<sup>(1)</sup>* |  |  |  |
|  Peter Allen | 190000 | 95000 | 285000 |
|  Mara Aspinall<sup>(2)</sup> | 53639 | 25000 | 78639 |
|  Mark Capone<sup>(2)</sup> | 52151 | 25000 | 77151 |
|  Sally Crawford<sup>(3)</sup> | 60000 | 30000 | 90000 |
|  Luba Greenwood | 15577 | 7788 | 23365 |
|  Giles Kerr | 60000 | 30000 | 90000 |
|  Bessie Lee<sup>(2)</sup> | 57235 | 25000 | 82235 |

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(1) Shares will be awarded at the beginning of the first open period following the announcement of our annual results in March 2023.

(2) Mara Aspinall, Mark Capone and Bessie Lee received tax compliance support in the preparation of tax returns relating to their fee from Abcam for which £3,639, £2,151 and £7,235 was paid by Abcam and is included in each of the applicable total fee figures.

(3) Sally Crawford began receiving a £15,000 supplemental fee following her appointment as Chair of the Remuneration Committee on 1 December 2021.

#### Non-Employee Director Letter Agreements
We review our fee structure for non-executive directors on an annual basis and determine remuneration based on, among other things, a review of current practices in other companies. We have entered into letter agreements with our non-employee directors for their services, which are subject to a one-month notice period, provided that, following a change in control of the Company, we may only terminate Mr. Allen upon three months' prior notice.

In 2016, we introduced a fee structure whereby a portion of non-employee director fees would be delivered as a fixed number of fully paid ordinary shares. These shares are not granted under any of our equity incentive

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plans. Currently, one-third of non-employee director fees are delivered as fully paid ordinary shares and the remainder of such fees are delivered as cash. Shares delivered to non-employee directors are awarded at the beginning of the first open period following the announcement of the annual results. Applicable taxes are deducted from the share component of the annual fees and the net amount is used to purchase the actual shares delivered to each non-employee director. Each non-employee director has committed not to sell or transfer these shares during the term of their directorship. Effective as of July 1, 2018, our non-executive directors receive a supplemental allowance for service as chair of the Audit and Risk Committee and chair of the Remuneration Committee, which is currently set at £15,000 per annum.

#### Pension, Retirement or Similar Benefits
We operate a flexible benefits scheme, which includes a defined contribution pension plan, in which all of our employees are eligible to participate. We generally make payments of up to 8% of annual base salary for all U.K. participants. Our executive officers also receive a range of other benefits such as life insurance, private medical cover and annual health screens, as described in "—Executive Officer Service Agreements" above.

The total amount set aside or accrued by us in respect of pension, retirement or similar benefits to our current directors and our executive officers in the year ended December 31, 2022 was £83,021 which represents contributions made by us in respect of a defined contribution scheme in which our executive officers who served throughout the year ended December 31, 2022 participated.

#### Insurance and Indemnification
To the extent permitted by the Companies Act 2006, we are empowered to indemnify our directors against any liability they incur by reason of their directorship. We maintain directors' and officers' insurance to insure such persons against certain liabilities. We expect to enter into a deed of indemnity with each of our directors and executive officers.

In addition to such indemnification, we provide our directors and executive officers with directors' and officers' liability insurance.

Insofar as indemnification of liabilities arising under the Securities Act may be permitted to our board, executive officers or persons controlling us pursuant to the foregoing provisions, we have been informed that, in the opinion of the SEC, such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

C. Board Practices

#### Composition of our Board of Directors
Our board of directors currently consists of nine directors, all of whom, other than Mr. Hirzel and Mr. Baldock, have been determined by our board of directors to not have a relationship that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director and to be "independent" as that term is defined under the rules of Nasdaq. In addition, there are no family relationships among any of our directors or executive officers.

Our articles of association provide that our board of directors must not have less than three and not more than 12 directors. In accordance with our articles of association, at each annual general meeting, the following directors will retire from office and be eligible for re-election:

• any director who was not elected or re-elected at either of the two preceding annual general meetings and any director who wishes to retire and offer himself for re-election (whether by reason of the U.K. Corporate Governance Code or for any other reason); and

• such number of the directors (excluding any director who is required to retire under our articles of association) as would, when added to the number of directors (if any) retiring in accordance with (i) above represent one third of the directors. If one third is not a whole number then the number of directors to retire is the number nearest to one third.

We intend to continue to comply with the requirements of provision 18 of the U.K. Corporate Governance Code that all directors be subject to annual re-election. Retiring directors are eligible for re-election. For more information on the length of time each director has served, see Item 6.A. "Directors and Senior Management."

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Our directors may be removed by special resolution or in accordance with and subject to the provisions of the Companies Act 2006 by ordinary resolution at a meeting of which special notice has been given. See Item 10.B. "Memorandum and Articles of Association."

#### Committees of our Board of Directors
Our board has three standing committees: an Audit and Risk Committee, a Remuneration Committee and a Nomination Committee. Each of these committees is governed by a charter that is consistent with applicable U.K. law and SEC and Nasdaq corporate governance rules and is available on the Investors section of our website at coprorate.abcam.com. The information contained on our website is not incorporated by reference in this Annual Report.

#### Audit and Risk Committee
Our Audit and Risk Committee consists of Mara Aspinall, Sally Crawford and Giles Kerr. Mr. Kerr serves as the chair of the Audit and Risk Committee. Our board has determined that that all members of our Audit and Risk Committee meet the requirements for financial literacy under the applicable rules and regulations of the Nasdaq corporate governance rules, as well as the additional independence requirements applicable to the members of an audit committee under the Nasdaq rules. Our board has determined that that Mr. Kerr is an audit committee financial expert as defined by the SEC rules and has the requisite financial experience as defined by the Nasdaq corporate governance rules.

The board has determined that each member of our audit committee is "independent" as such term is defined in Rule 10A-3(b)(1) under the Exchange Act, which is different from the general test for independence of board and committee members.

The Audit and Risk Committee is responsible for, among other things:

• monitoring the integrity of our financial statements, and any formal announcements relating to our financial performance and review significant financial reporting judgements contained in them;

• making recommendations to the board in relation to the appointment, re-appointment, evaluation and removal of the independent auditor and to approve the remuneration and terms of engagement of the independent auditor;

• pre-approving the audit services and non-audit services to be provided by our independent auditor unless the engagement is entered into pursuant to an appropriate pre-approval policy established by the Audit and Risk Committee or if such service falls within available exceptions under the rules of the SEC;

• assessing annually the qualifications, expertise and resources of the independent auditor and the effectiveness of the audit process, which shall include a report from the external auditor on their own internal quality procedures;

• reporting its views to the board where it disagrees with any aspect of our proposed financial reporting;

• approving or ratifying "related party transactions" (as defined in our related party transaction policy) in accordance with our related party transaction policy;

• reviewing and overseeing the adequacy and effectiveness of our financial reporting and internal control policies and systems, covering all material controls, including financial, operational and compliance controls, and the procedures for the identification, assessment, management and reporting of risks; and

• periodically reviewing and discussing with management and the independent auditor our code of conduct and reviewing and reassessing the procedures in place to enforce the code of conduct, and consider and discuss and, as appropriate, grant requested waivers from the code of conduct.

The Audit and Risk Committee meets at least four times per year and at such other times as the chair of the Audit and Risk Committee shall think fit. The Audit and Risk Committee will meet at least once per year with our independent auditor, without our management being present.

#### Remuneration Committee
Our Remuneration Committee consists of Sally Crawford, Peter Allen, Mara Aspinall, Giles Kerr and Mark Capone. Ms. Crawford serves as chair of the committee. Our board has determined that each member of our Remuneration Committee is independent under the Nasdaq corporate governance rules, including the additional independence requirements applicable to the members of a remuneration committee.

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The Remuneration Committee is responsible for, among other things:

• identifying, reviewing and proposing policies relevant to, and setting of individual remuneration packages for, the Chairman, the executive members of the board and senior management (the remuneration of non-executive directors shall be a matter for Chairman and the executive members of the board);

• exercising oversight over the level and structure of remuneration for the workforce and related policies and to ensure the alignment of incentives and reward with our culture;

• approving the design of, and determining targets for any performance related pay schemes and recommending that the board, when appropriate, seek shareholder approval for any long-term incentive arrangements and approve the total annual payments made under such schemes; and

• determining the policy for and scope of pension arrangements, for executive directors.

The Remuneration Committee meets at least twice each year, and at such other times as the chair of the Remuneration Committee shall think fit.

#### Nomination Committee
Our Nomination Committee consists of Peter Allen, Mara Aspinall, and Giles Kerr. Mr. Allen serves as chair of the committee.

The Nomination Committee is responsible for, among other things:

• reviewing, on a regular basis, the structure, size and composition of the board and making recommendations to the board with regard to any adjustments that are deemed necessary or advisable;

• identifying and nominating, for the approval of our board, candidates to fill vacancies on the Board and its corresponding committees;

• ensuring that appointments and succession plans are based on merit and objective criteria and, within that context, promoting diversity of gender, social and ethnic backgrounds, cognitive and personal strengths;

• ensuring plans are in place for an orderly succession to the board and senior management positions; and

• keeping under review the leadership needs of the Company, both executive and non-executive, with a view to ensuring that we are able to compete effectively in the marketplace.

The Nomination Committee meets at least once each year, and at such other times as the chair of the Nomination Committee shall think fit.

#### Service Agreements
For a description of directors' service contracts providing for benefits upon termination of employment, please see Item 6.B. "Directors, Senior Management and Employees—Compensation—Executive Officer Service Agreements."

D. Employees

The table below sets out the number of employees (excluding day-rate contractors) by geography as of December 31, 2022, 2021 and 2020:

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| | | | |
|:---|:---|:---|:---|
| **Geography** | **As of<br>December 31,<br>2022** | **As of<br>December 31,<br>2021** | **As of<br>December 31,<br>2020** |
|  United States | 475 | 405 | 402 |
|  EMEA<sup>(1)</sup> | 746 | 762 | 691 |
|  APAC<sup>(2)</sup> | 539 | 515 | 462 |
|  **Total** | **1760** | **1682** | **1555** |

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(1) The significant majority of our EMEA employees are in Cambridge, United Kingdom.

(2) APAC includes employees in Shanghai, Beijing and Hangzhou in China, Tokyo, Japan, Singapore, Taiwan and Australia.

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The table below sets out the number of employees (excluding day-rate contractors) by category as of December 31, 2022, 2021 and 2020:

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| | | | |
|:---|:---|:---|:---|
| **Geography** | **As of<br>December 31,<br>2022** | **As of<br>December 31,<br>2021** | **As of<br>December 31,<br>2020** |
|  Management, administrative, marketing and distribution<sup>(1)</sup> | 1341 | 1254 | 1119 |
|  Laboratory | 419 | 428 | 436 |
|  **Total** | 1760 | 1682 | 1555 |

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(1) Other employees include departments such as Regional Sales and Marketing, Data & Analytics, Scientific Support, In-House Manufacturing, Core Finance and Facilities Health & Safety.

Currently, none of our employees are represented by a trade or labor union other than one employee labor union in Hangzhou, China. Employee turnover has not had a material impact on our operations to date. In certain countries in which we operate, we are subject to local labor law requirements, which may automatically make our employees subject to industry-wide collective bargaining agreements. We have not experienced any work stoppages and we consider our relationship with our employees to be good.

E. Share Ownership

For information regarding the share ownership of directors and officers, see Item 7.A. "Major Shareholders and Related Party Transactions—Major Shareholders." For information regarding our equity compensation arrangements, see Item 6.B. "Director, Senior Management and Employees—Compensation—Equity Compensation Arrangements."

F. Disclosure of a Registrant's Action to Recover Erroneously Awarded Compensation

Not applicable.

#### Item 7. Major Shareholders and Related Party Transactions
A. Major Shareholders

The following table sets forth information relating to the beneficial ownership of our ordinary shares as of February 15, 2023 by:

• each person, or group of affiliated persons, known by us to beneficially own 5% or more of our outstanding ordinary shares;

• each of our board members and executive officers individually; and

• all of our board members and executive officers as a group.

The number of ordinary shares beneficially owned by each entity, person, executive officer or board member is determined in accordance with the rules of the SEC, and the information is not necessarily indicative of beneficial ownership for any other purpose. Under such rules, beneficial ownership includes any shares over which the individual has sole or shared voting power or investment power as well as any shares that the individual has the right to acquire within 60 days of February 15, 2023 through the exercise of any option. Except as otherwise indicated, and subject to applicable community property laws, the persons named in the table have sole voting and investment power with respect to all ordinary shares held by that person.

Unless otherwise indicated below, the address for each beneficial owner listed is c/o Abcam plc, Discovery Drive, Cambridge Biomedical Campus, Cambridge CB2 0AX, United Kingdom.

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For further information regarding material transactions between us and principal shareholders, see Item 7.B. "Major Shareholders and Related Party Transactions—Related Party Transactions."

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| | | |
|:---|:---|:---|
| **5% or greater shareholders** | **Number of<br>ordinary shares** | **%** |
|  Durable Capital Partners LP<sup>(1)</sup> | 17460597 | 7.6 |
| T. Rowe Price Associates, Inc.<sup>(2)</sup> | 16772000 | 7.3 |
|  Wellington Management Group LLP<sup>(3)</sup> | 15066586 | 6.6 |
|  Jonathan Milner<sup>(4)</sup> | 14685202 | 6.4 |
|  Harding Loevner<sup>(5)</sup> | 13506166 | 5.9 |
|  Baillie Gifford & Co. Ltd<sup>(6)</sup> | 12163749 | 5.3 |

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| | | |
|:---|:---|:---|
| **Name of beneficial owner** | **Number of<br>ordinary shares** | **%** |
|  **Executive officers and board members** |  |  |
|  Alan Hirzel<sup>(7)</sup> | 283895 | \* |
|  Michael Baldock<sup>(8)</sup> | 9976 | \* |
|  Peter Allen<sup>(9)</sup> | 18563 | \* |
|  Mara Aspinall<sup>(10)</sup> | 14545 | \* |
|  Giles Kerr<sup>(11)</sup> | 1485 | \* |
|  Sally Crawford<sup>(12)</sup> |  |  |
|  Mark Capone<sup>(13)</sup> |  |  |
|  Bessie Lee<sup>(14)</sup> |  |  |
|  Luba Greenwood<sup>(15)</sup> |  |  |
|  All executive officers and board members as a group (9 persons) | 328464 | \* |

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\* Indicates ownership of less than 1%.

(1) Based on information reported on a Schedule 13G/A filed on February 10, 2023, Durable Capital Partners LP ("Durable LP") has sole voting and dispositive power over 17,460,597 of our ordinary shares held directly by Durable Capital Master Fund LP ("Durable Master Fund"). Durable LP is the investment adviser to Durable Master Fund. Durable Capital Partners GP LLC ("Durable GP") is the general partner of the Durable LP, and Henry Ellenbogen is the chief investment officer of Durable LP and the managing member of Durable GP. The business address of Durable LP is 5425 Wisconsin Avenue, Suite 802, Chevy Chase, MD 20815.

(2) Represents 6,314,000 ordinary shares held by T. Rowe Price Associates, Inc., 6,090,000 ordinary shares held by T. Rowe Price Investment Management and 4,368,000 ordinary shares held by T. Rowe Price International Ltd. T. Rowe Price International Ltd. may be deemed to have beneficial ownership over the ordinary shares held by T. Rowe Price Associates, Inc., and the address for T. Rowe Price Associates Inc. is 100 East Pratt Street Baltimore, Maryland 21202, United States.

(3) Based on information reported on a Schedule 13G filed on February 6, 2023, each of Wellington Management Group LLP, Wellington Group Holdings LLP and Wellington Investment Advisors Holdings LLP has shared voting power over 14,171,709 of our ordinary shares and shared dispositive power over 15,066,586 of our ordinary shares. The respective business addresses of Wellington Management Group LLP, Wellington Group Holdings LLP, Wellington Investment Advisors Holdings LLP and Wellington Management Company LLP is 280 Congress Street, Boston, Massachusetts 02210.

(4) The percentage ownership of Mr. Milner decreased from 6.78% in February 2022. to 6.40% in March 2023.

(5) Based on information reported on a Schedule 13G filed on February 14, 2023, Harding Loevner L.P. has sole voting and dispositive power over 13,506,166 of our American Depository Receipt shares. The business address for Harding Loevner L.P. is 400 Crossings Blvd, Fourth Floor, Bridgewater, NJ 08807.

(6) Based on information reported on a Schedule 13G filed on January 18, 2023, Baillie Gifford & Co. Ltd. has sole voting power of 8,283,216 of our ordinary shares and sole dispositive power of 12,163,749 of our American Depository Shares. The respective business address for Baillie Gifford & Co. Ltd. is Calton Square, 1 Greenside Row, Edinburgh, EH1 3AN, United Kingdom.

(7) Represents for Mr. Hirzel (i) 283,895 ordinary shares and (ii) nil underlying options or awards that are currently vested and exercisable or that vest within sixty days of February 15, 2023.

(8) Represents for Mr. Baldock (i) 9,976 ordinary shares and (ii) nil underlying options or awards that are currently vested and exercisable or that vest within sixty days of February 15, 2023.

(9) Represents for Mr. Allen (i) 18,563 ordinary shares and (ii) nil underlying options or awards that are currently vested and exercisable or that vest within sixty days of February 15, 2023.

(10) Represents for Ms. Aspinall (i) 14,545 ordinary shares and (ii) nil underlying options or awards that are currently vested and exercisable or that vest within sixty days of February 15, 2023.

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(11) Represents for Mr. Kerr (i) 1,485 ordinary shares and (ii) nil underlying options or awards that are currently vested and exercisable or that vest within sixty days of February 15, 2023.

(12) Represents for Ms. Crawford (i) nil ordinary shares and (ii) nil underlying options or awards that are currently vested and exercisable or that vest within sixty days of February 15, 2023.

(13) Represents for Mr. Capone (i) nil ordinary shares and (ii) nil underlying options or awards that are currently vested and exercisable or that vest within sixty days of February 15, 2023.

(14) Represents for Ms. Lee (i) nil ordinary shares and (ii) nil underlying options or awards that are currently vested and exercisable or that vest within sixty days of February 15, 2023.

(15) Represents for Ms. Greenwood (i) nil ordinary shares and (ii) nil underlying options or awards that are currently vested and exercisable or that vest within sixty days of February 15, 2023.

#### Significant Changes in Ownership
To our knowledge, other than as disclosed in the table above, our other filings with the SEC, public disclosure, including without limitation Schedule 13 filings, and this Annual Report, there has been no significant change in the percentage ownership held by any major shareholder, with a holding of 5% or greater, since January 1, 2020.

#### Voting Rights
No major shareholders listed above have voting rights with respect to their ordinary shares that are different from the voting rights of other holders of our ordinary shares.

#### Change in Control Arrangements
We are not aware of any arrangement that may at a subsequent date, result in a change of control of the Company.

#### Registered Holders
According to the depositary, as of February 15, 2023, of the 68 registered holders of the Company's ADSs, excluding any of its ADSs held by Cede & Co. as a nominee for the Depository Trust Company, there were 8 registered holders with addresses in the United States representing approximately 0.02% of our outstanding ADSs as of that date.

According to our registrar, as of February 15, 2023, of the 474 registered holders of our shares, excluding any of its ordinary shares held by Citibank N.A as depositary, there were 65 registered holders with addresses in the United States representing approximately 0.2% of our outstanding ordinary shares as of that date. Because some of the Company's ADSs and ordinary shares are held through brokers or other nominees, the number of record holders of the Company's ADSs or ordinary shares with addresses in the United States may be fewer than the number of beneficial owners of ADSs and ordinary shares in the United States.

B. Related Party Transactions

The following includes, among other information, a description of related party transactions, as defined under Item 7.B of Form 20-F, since January 1, 2022.

#### Agreements with Board Members and Executive Officers
For a description of our other agreements with our board members and executive officers, please see Item 6.B. "Directors, Senior Management and Employees."

#### Indemnification Agreements
We have indemnification provisions in the letters of appointment and employment agreements with our board members and executive officers. Our Articles of Association allow us to indemnify our board members and executive officers to the fullest extent permitted by law, subject to certain exceptions. See "Management—Insurance and Indemnification" for a description of these indemnification agreements.

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#### Related Party Transaction Policy
Our board has adopted a written related party transaction policy to set forth the policies and procedures for the review and approval or ratification of related party transactions. Under our related party transaction policy, any related party transaction, including all relevant facts and circumstances, must be reviewed and approved or ratified by the audit committee. Such review shall assess whether if the transaction is on terms comparable to those that could be obtained in arm's length dealings with an unrelated third party, the extent of the related party's interest in the transaction and shall also take into account the conflicts of interest and/or corporate opportunity provisions of our organizational documents and Code of Conduct and, where the related party involves a director or director nominee, whether the related party transaction will impair the director or director nominee's independence under the rules and regulations of the SEC and Nasdaq.

C. Interests of Experts and Counsel

Not applicable.

#### Item 8. Financial Information
A. Consolidated Statements and Other Financial Information

*Consolidated Financial Statements* 

See Item 18. "Financial Statements."

*Legal and Arbitration Proceedings* 

From time to time, we may be involved in various claims and legal proceedings related to claims arising out of our operations. We are not currently a party to any material legal proceedings, including any such proceedings that are pending or threatened, of which we are aware.

*Dividend Policy* 

In the future, our board of directors may decide, in its discretion, whether dividends may be proposed (in respect of final dividends) or declared and paid (in respect of interim dividends). Under English law, among other things, we may only pay dividends if we have sufficient distributable reserves (on a non-consolidated basis), which are our accumulated realized profits that have not been previously distributed or capitalized less our accumulated realized losses, so far as such losses have not been previously written off in a reduction or reorganization of capital.

For the year ended December 31, 2020, we declared and paid dividends in an aggregate amount of £25.0 million, for the years ended December 31, 2021 and December 31, 2022, we did not declare or pay dividends.

B. Significant Changes

Not applicable.

#### Item 9. The Offer and Listing
A. Offer and Listing Details

Our ADSs commenced trading on the Nasdaq Global Select Market on October 22, 2020. Our ordinary shares were also listed on the AIM market of the London Stock Exchange until December 14, 2022, when the shares were delisted from AIM in an effort to enhance liquidity of trading by combining all transactions on Nasdaq and to reduce costs through removing duplicative listing and compliance fees.

B. Plan of Distribution

Not applicable.

C. Markets

Our ADSs commenced trading on the Nasdaq Global Select Market on October 22, 2020 under the symbol "ABCM."

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D. Selling Shareholders

Not Applicable.

E. Dilution

Not applicable.

F. Expenses of the Issue

Not applicable.

#### Item 10. Additional Information
A. Share Capital

Not applicable.

B. Memorandum and Articles of Association

A copy of our articles of association is attached as Exhibit 1.1 to this Annual Report. The information called for by this Item is set forth in Exhibit 2.3 to this Annual Report and is incorporated by reference into this Annual Report.

C. Material Contracts

Except as disclosed below or otherwise disclosed in this Annual Report (including the Exhibits), we are not currently, nor have we been for the past two years immediately preceding this Annual Report, party to any material contract, other than contracts entered into in the ordinary course of business.

#### BioVision
On August 1, 2021, we, through our wholly-owned Delaware subsidiary, Abcam U.S. Group Holdings Inc., entered into a share purchase agreement (the "Share Purchase Agreement") with Boai NKY Medical Holdings Ltd. ("NKY") and Boai NKY Biotech Co., Ltd. ("NKY Seller") to acquire NKY Biotech US, Inc. ("Biotech") and its wholly owned subsidiary, BioVision, Inc. ("BioVision"), a producer of bio-chemical and cell-based assays, and developer, producer and seller of a wide portfolio of other products including recombinant proteins, antibodies, enzymes, and biochemical compounds, and one of our existing third-party suppliers. On October 26, 2021, we completed the acquisition of Biotech and BioVision pursuant to the Share Purchase Agreement, for total cash consideration of approximately $349.9 million, on a cash-free, debt-free basis, of which approximately $27 million was deposited into an escrow account held by a third-party financial institution in support of NKY and NKY Seller's indemnification obligations related to their respective representations, warranties and covenants set forth in the Share Purchase Agreement. The Share Purchase Agreement contains customary representations, warranties, covenants and other agreements by and among the parties, including customary representations, warranties and indemnities by and from NKY and NKY Seller in favor of Abcam plc, Abcam U.S. Group Holdings Inc. and certain of their respective affiliates as well as a customary post-closing purchase price adjustment mechanism.

D. Exchange Controls

Other than specific sanctions legislation against a limited list of countries and organizations, there are no governmental laws, decrees, regulations or other legislation in the United Kingdom that affect the import or export of capital, including the availability of cash and cash equivalents for use by us, or that may affect the remittance of dividends, interest or other payments by us to non-resident holders of our ordinary shares or ADSs, other than withholding tax requirements, where applicable. There are no general limitations imposed by English law or in our Articles of Association on the right of non-residents to hold shares or vote at our shareholders meetings.

E. Taxation

*The following summary contains a description of certain United Kingdom and U.S. federal income tax consequences of the acquisition, ownership and disposition of ADSs, but it does not purport to be a* 

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 *comprehensive description of all the tax considerations that may be relevant to a decision to purchase ADSs. The summary is based upon the tax laws of the United Kingdom and regulations thereunder and on the tax laws of the United States and regulations thereunder as of the date hereof, which are subject to change.* 

#### Material United Kingdom Tax Considerations
The following statements are of a general nature and do not purport to be a complete analysis of all potential U.K. tax consequences of acquiring, holding and disposing of the ADSs. They are based on current U.K. tax law and on the current published practice of HMRC (which may not be binding on HMRC), as of the date of this Annual Report, all of which are subject to change, possibly with retrospective effect. They are intended to address only certain U.K. tax consequences for holders of ADSs who are tax resident in (and only in) the United Kingdom, and in the case of individuals, domiciled in (and only in) the United Kingdom (except where expressly stated otherwise) who are the absolute beneficial owners of the ADSs and any dividends paid on them and who hold the ADSs as investments (other than in an individual savings account or a self-invested personal pension). They do not address the U.K. tax consequences which may be relevant to certain classes of ADS holders such as traders, brokers, dealers, banks, financial institutions, insurance companies, investment companies, collective investment schemes, tax-exempt organizations, trustees, persons connected with the Company or the Group, persons holding their ADSs as part of hedging or conversion transactions, ADS holders who have (or are deemed to have) acquired their ADSs by virtue of an office or employment, and ADS holders who are or have been officers or employees of the Company or a company forming part of the Group. The statements do not apply to any ADS holder who either directly or indirectly holds or controls 10% or more of the Company's share capital (or class thereof), voting power or profits.

The following is intended only as a general guide and is not intended to be, nor should it be considered to be, legal or tax advice to any particular prospective subscriber for, or purchaser of, any ADSs. Accordingly, prospective subscribers for, or purchasers of, any ADSs who are in any doubt as to their tax position regarding the acquisition, ownership or disposition of any ADSs or who are subject to tax in a jurisdiction other than the United Kingdom should consult their own tax advisers.

#### U.K. Taxation of Dividends
*Withholding tax* 

The Company will not be required to withhold U.K. tax at source when paying dividends. The amount of any liability to U.K. tax on dividends paid by the Company will depend on the individual circumstances of an ADS holder.

*Income tax* 

An individual ADS holder who is resident for tax purposes in the United Kingdom may, depending on his or her particular circumstances, be subject to U.K. tax on dividends received from the Company. An individual ADS holder who is not resident for tax purposes in the United Kingdom should not be chargeable to U.K. income tax on dividends received from the Company unless he or she carries on (whether solely or in partnership) any trade, profession or vocation in the United Kingdom through a branch or agency to which the ADSs are attributable. There are certain exceptions for trading in the United Kingdom through independent agents, such as some brokers and investment managers.

All dividends received by a U.K. tax resident individual holder of any ADSs from the Company or from other sources will form part of the ADS holder's total income for income tax purposes and will constitute the top slice of that income. For dividends received from April 6, 2023, a nil rate of income tax will apply to the first £1,000 of total taxable dividend income received by the ADS holder in a tax year. Income within the nil rate band will be taken into account in determining whether income in excess of the nil rate band falls within the basic rate, higher rate or additional rate tax bands. Where the total dividend income is above the £1,000 dividend allowance, the first £1,000 of the dividend income will be charged at the nil rate and any excess amount will be taxed at 8.75% to the extent that the excess amount falls within the basic rate tax band, 33.75% to the extent that the excess amount falls within the higher rate tax band and 39.35% to the extent that the excess amount falls within the additional rate tax band. From April 6, 2024, the dividend allowance in the United Kingdom will decrease to £500.

*Corporation tax* 

Corporate ADS holders which are resident for tax purposes in the United Kingdom should not be subject to U.K. corporation tax on any dividend received from the Company so long as the dividends qualify for exemption

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(as is likely) and certain conditions are met (including anti-avoidance conditions). If the conditions for exemption are not met or cease to be satisfied, or such an ADS holder elects for an otherwise exempt dividend to be taxable, the ADS holder will be subject to U.K. corporation tax on dividends received from the Company, at the rate of corporation tax applicable to that ADS holder (the main rate of U.K. corporation tax is currently 19.0% and will increase to 25.0% with effect from April 1, 2023).

Corporate ADS holders who are not resident in the United Kingdom will not generally be subject to U.K. corporation tax on dividends unless they are carrying on a trade, profession or vocation in the United Kingdom through a permanent establishment in connection with which the ADSs are used, held, or acquired.

A Shareholder who is resident outside the United Kingdom may be subject to non-U.K. taxation on dividend income under local law.

#### U.K. Taxation of capital gains
*U.K. resident ADS holders* 

A disposal or deemed disposal of ADSs by an individual or corporate ADS holder who is tax resident in the United Kingdom may, depending on the ADS holder's circumstances and subject to any available exemptions or reliefs, give rise to a chargeable gain or allowable loss for the purposes of U.K. taxation of chargeable gains.

Any chargeable gain (or allowable loss) will generally be calculated by reference to the consideration received for the disposal of the ADSs less the allowable cost to the ADS holder of acquiring any such ADSs.

The applicable tax rates for individual ADS holders realizing a gain on the disposal of ADSs is, broadly, 10% for basic rate taxpayers and 20% for higher and additional rate taxpayers. For corporate ADS holders, Corporation tax is generally charged on chargeable gains at the rate applicable to the relevant corporate ADS holder (the main rate of U.K. corporation tax is currently 19.0% and will increase to 25.0% with effect from April 1, 2023).

*Non-U.K. ADS holders* 

ADS holders who are not resident in the United Kingdom and, in the case of an individual ADS holder, not temporarily non-resident, should not be liable for U.K. tax on capital gains realized on a sale or other disposal of ADSs unless (i) such ADSs are used, held or acquired for the purposes of a trade, profession or vocation carried on in the United Kingdom through a branch or agency or, in the case of a corporate ADS holder, through a permanent establishment or (ii) where certain conditions are met, the Company derives 75% or more of its gross value from U.K. land (which is not expected to be the case). ADS holders who are not resident in the United Kingdom may be subject to non-U.K. taxation on any gain under local law.

Generally, an individual ADS holder who has ceased to be resident in the United Kingdom for U.K. tax purposes for a period of five years or less and who disposes of any ADSs during that period may be liable on their return to the United Kingdom to U.K. taxation on any capital gain realized (subject to any available exemption or relief).

#### U.K. Stamp Duty ("stamp duty") and U.K. Stamp Duty Reserve Tax ("SDRT")
*The following statements apply to all ADS holders, regardless of their jurisdiction of tax residence.* 

No stamp duty or SDRT should be payable on paperless transfers of, or agreements to transfer, the ADSs through the facilities of DTC.

No stamp duty should be payable on a written instrument transferring, or a written agreement to transfer, ADSs provided the instrument or agreement is executed and remains at all times outside the U.K. No SDRT should be payable in respect of agreements to transfer ADSs.

If ordinary shares (or interests therein) are transferred into a clearance service or depositary receipt system, stamp duty or SDRT may be payable at the rate of 1.5% of the amount or value of the consideration given or, in certain circumstances, the value of the shares (save to the extent that an election has been made under section 97A of the UK Finance Act 1986). This liability for stamp duty or SDRT will strictly be accountable by the clearance service or depositary receipt system, as the case may be, but will, in practice, generally be reimbursed by participants in the clearance service or depositary receipt system.

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#### Material United States Federal Income Tax Considerations
The following summary describes certain material U.S. federal income tax considerations generally applicable to U.S. Holders (as defined below), and solely to the extent described below under the heading "U.S. Foreign Account Tax Compliance Act," to persons other than U.S. Holders, of an investment in the ordinary shares or ADSs. This summary applies only to U.S. Holders that hold the ordinary shares or ADSs as capital assets within the meaning of Section 1221 of the Internal Revenue Code of 1986, as amended (the "Code"), that have the U.S. dollar as their functional currency.

This discussion is based on the tax laws of the United States, including the Code, as in effect on the date hereof and on U.S. Treasury regulations as in effect or, in some cases, as proposed, on the date hereof, as well as judicial and administrative interpretations thereof available on or before such date. All of the foregoing authorities are subject to change or differing interpretations, which change or differing interpretation could apply retroactively and could affect the tax consequences described below. No ruling will be requested from the Internal Revenue Service (the "IRS") regarding the tax consequences acquiring our ADSs and there can be no assurance that the IRS will agree with the discussion set out below. This summary does not address any estate or gift tax consequences, the alternative minimum tax, the Medicare tax on net investment income or any state, local or non-U.S. tax consequences.

This summary also does not address the tax consequences that may be relevant to persons in special tax situations such as:

• banks;

• certain financial institutions;

• insurance companies;

• regulated investment companies;

• real estate investment trusts;

• individual retirement accounts and other tax-deferred accounts;

• broker-dealers;

• traders that elect to mark to market;

• U.S. expatriates;

• tax-exempt entities;

• persons that own the ordinary shares or ADSs as part of a "straddle," "hedge," "conversion transaction" or integrated transaction;

• persons that actually or constructively own 10% or more of the Company's share capital (by vote or value);

• persons that are resident or ordinarily resident in or have a permanent establishment in a jurisdiction outside the United States;

• persons who acquired the ordinary shares or ADSs pursuant to the exercise of any employee share option or otherwise as compensation;

• persons subject to special tax accounting rules as a result of any item of gross income with respect to the ordinary shares or ADSs being taken into account in an applicable financial statement; or

• pass-through entities or arrangements, or persons holding ordinary shares or ADSs through pass-through entities or arrangements.

**THE SUMMARY OF U.S. FEDERAL INCOME TAX CONSIDERATIONS SET OUT BELOW IS FOR GENERAL INFORMATION ONLY. U.S. HOLDERS SHOULD CONSULT THEIR TAX ADVISORS AS TO THE APPLICATION OF THE U.S. FEDERAL TAX RULES TO THEIR PARTICULAR CIRCUMSTANCES AS WELL AS THE STATE, LOCAL, NON-U.S. AND OTHER TAX CONSEQUENCES TO THEM OF THE OWNERSHIP AND DISPOSITION OF THE ORDINARY SHARES OR ADSS.**

As used herein, the term "U.S. Holder" means a beneficial owner of the ordinary shares or ADSs that is, for U.S. federal income tax purposes:

• an individual who is a citizen or resident of the United States;

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• a corporation (or other entity taxable as a corporation for U.S. federal income tax purposes) created or organized in the United States or under the laws of the United States, any state thereof or the District of Columbia;

• an estate, the income of which is subject to U.S. federal income taxation regardless of its source; or

• a trust that (1) is subject to the primary supervision of a court within the United States and the control of one or more U.S. persons for all substantial decisions or (2) has a valid election in effect under applicable U.S. Treasury regulations to be treated as a U.S. person.

If an entity or other arrangement treated as a partnership for U.S. federal income tax purposes holds ordinary shares or ADSs, the tax treatment of a partner will generally depend upon the status of the partner and the activities of the partnership and certain determinations made at the partnership level. A person that would be a U.S. Holder if it held ordinary shares or ADSs directly and that is a partner of a partnership holding ordinary shares or ADSs is urged to consult its tax advisor.

The discussion below assumes that the representations contained in the deposit agreement are true and that the obligations in the deposit agreement and any related agreement will be complied with in accordance with their terms. Generally, a holder of an ADS should be treated for U.S. federal income tax purposes as holding the ordinary shares represented by the ADS. Accordingly, no gain or loss will generally be recognized upon an exchange of ADSs for ordinary shares.

#### Taxation of Dividends and Other Distributions on the Ordinary Shares or ADSs
Subject to the passive foreign investment company rules discussed below, the gross amount of any distributions the Company makes to a U.S. Holder (including the amount of any tax withheld) with respect to the ordinary shares or ADSs generally will be includible in a U.S. Holder's gross income as dividend income on the date of receipt, but only to the extent the distribution is paid out of the Company's current or accumulated earnings and profits (as determined under U.S. federal income tax principles). The dividends will not be eligible for the dividends-received deduction allowed to corporations in respect of dividends received from other U.S. corporations. To the extent the amount of the distribution exceeds the Company's current and accumulated earnings and profits (as determined under U.S. federal income tax principles), such excess amount will be treated first as a tax-free return of a U.S. Holder's tax basis in the ordinary shares or ADSs, and then, to the extent such excess amount exceeds such holder's tax basis in such ordinary shares or ADSs, as capital gain. The Company currently does not, and it does not intend to, calculate its earnings and profits under U.S. federal income tax principles. Therefore, a U.S. Holder should expect that a distribution will generally be reported as a dividend even if that distribution would otherwise be treated as a non-taxable return of capital or as capital gain under the rules described above.

With respect to certain non-corporate U.S. Holders, including individual U.S. Holders, dividends may be taxed at the lower capital gain rates applicable to "qualified dividend income," provided that (i) the ordinary shares or ADSs, as applicable, are readily tradable on an established securities market in the United States, (ii) certain holding period and at-risk requirements are met and (iii) the Company is not a passive foreign investment company (as discussed below) with respect to the relevant U.S. Holder for either the taxable year in which the dividend was paid or the preceding taxable year. In this regard, the ordinary shares or ADSs will generally be considered to be readily tradable on an established securities market in the United States if they are listed on Nasdaq, as it is expected that the ADSs will be. However, based on existing guidance, it is not entirely clear whether any dividends a U.S. Holder receives with respect to the ordinary shares will be taxed as qualified dividend income, because the ordinary shares will not themselves be listed on a securities market in the United States for trading purposes. U.S. Holders should consult their tax advisors regarding the availability of the reduced tax rate on dividends with respect to distributions on the ordinary shares or ADSs in light of their particular circumstances.

The amount of any distribution paid in foreign currency that will be included in the gross income of a U.S. Holder will be the U.S. dollar value of the distribution payment based on the exchange rate in effect on the date such distribution is included in such holder's income, whether or not the payment is converted into U.S. dollars at that time. The amount of any distribution of property other than cash will be the fair market value of such property on the date of distribution.

Any dividends paid by the Company with respect to the ordinary shares or ADSs will constitute foreign source income for foreign tax credit limitation purposes. If the dividends are taxed as qualified dividend income

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(as discussed above), the amount of the dividend taken into account for purposes of calculating the foreign tax credit limitation will, in general, be limited to the gross amount of the dividend, multiplied by the reduced tax rate applicable to qualified dividend income and divided by the highest tax rate normally applicable to dividends. The limitation on foreign taxes eligible for credit is calculated separately with respect to specific classes of income. Dividends paid by the Company with respect to the ordinary shares or ADSs will generally constitute "passive category income" for purposes of the foreign tax credit.

#### Taxation of Disposition of the Ordinary Shares or ADSs
Subject to the passive foreign investment company rules discussed below, upon a sale or other taxable disposition of the ordinary shares or ADSs, a U.S. Holder will generally recognize capital gain or loss for U.S. federal income tax purposes in an amount equal to the difference between the amount realized (including the amount of any tax withheld) and such holder's adjusted tax basis in such ordinary shares or ADSs.

If the consideration received upon the sale or other taxable disposition of the ordinary shares or ADSs is paid in foreign currency, the amount realized will be the U.S. dollar value of the payment received, translated at the spot rate of exchange on the date of taxable disposition. If the ordinary shares or ADSs are treated as traded on an established securities market for U.S. federal income tax purposes and the relevant U.S. Holder is either a cash-basis taxpayer or an accrual-basis taxpayer who has made a special election (which must be applied consistently from year to year and cannot be changed without the consent of the IRS), such holder will determine the U.S. dollar value of the amount realized in foreign currency by translating the amount received at the spot rate of exchange on the settlement date of the taxable disposition. An accrual-basis taxpayer that does not make the special election will recognize exchange gain or loss to the extent attributable to the difference between the exchange rates on the date of disposition and the settlement date, and such exchange gain or loss generally will constitute U.S.-source ordinary income or loss.

A U.S. Holder's initial tax basis in the ordinary shares or ADSs generally will equal the cost of such ordinary shares or ADSs. If a U.S. Holder used foreign currency to purchase the ordinary shares or ADSs, the cost of such ordinary shares or ADSs will be the U.S. dollar value of the foreign currency purchase price on the date of purchase, translated at the spot rate of exchange on that date. If the ordinary shares or ADSs are treated as traded on an established securities market for U.S. federal income tax purposes and the relevant U.S. Holder is either a cash-basis taxpayer or an accrual-basis taxpayer who has made the special election described above, the U.S. Holder will determine the U.S. dollar value of the cost of such ordinary shares or ADSs by translating the amount paid at the spot rate of exchange on the settlement date of the purchase.

Any gain or loss on the sale or other taxable disposition of the ordinary shares or ADSs will generally be treated as U.S. source income or loss and treated as long-term capital gain or loss if the U.S. Holder's holding period in the ordinary shares or ADSs at the time of the disposition exceeds one year. Accordingly, in the event any United Kingdom tax (including withholding tax) is imposed upon the sale or other taxable disposition, a U.S. Holder may not be able to utilize foreign tax credits unless such holder has foreign source income or gain in the same category from other sources. Long-term capital gain of non-corporate U.S. Holders generally will be subject to U.S. federal income tax at reduced tax rates. The deductibility of capital losses is subject to significant limitations.

#### Passive Foreign Investment Company Considerations
The Company will be classified as a PFIC for any taxable year if either: (i) at least 75 per cent of its gross income is "passive income" for purposes of the PFIC rules or (ii) at least 50 per cent of the value of its assets (determined on the basis of a quarterly average) is attributable to assets that produce or are held for the production of passive income. For this purpose, the Company will be treated as owning a proportionate share of the assets and earning a proportionate share of the income of any other entity treated as a corporation for U.S. federal income tax purposes in which the Company owns, directly or indirectly, 25% or more (by value) of the stock.

Under the PFIC rules, if the Company were considered a PFIC at any time that a U.S. Holder holds the ordinary shares or ADSs, the Company would continue to be treated as a PFIC with respect to such investment unless (i) it ceased to be a PFIC and (ii) the U.S. Holder made a "deemed sale" election under the PFIC rules. If such election is made, a U.S. Holder will be deemed to have sold its ordinary shares or ADSs at their fair market value on the last day of the last taxable year in which the Company is classified as a PFIC, and any gain from such deemed sale would be subject to the consequences described below. After the deemed sale election, the

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ordinary shares or ADSs with respect to which the deemed sale election was made will not be treated as shares in a PFIC unless the Company subsequently becomes a PFIC.

Based on the nature and composition of the Company's income, assets and operations and the income, assets and operations of the Company's subsidiaries, the Company does not believe that it is was a PFIC for the taxable year ended December 31, 2022, and it does not expect to be a PFIC for the current taxable year or in the foreseeable future. However, this is a factual determination that depends on, among other things, the nature and composition of the Company's income and assets, and the market value of the Company's shares and assets, including the nature and composition of income and assets and the market value of shares and assets of the Company's subsidiaries, from time to time. Therefore, no assurance can be given that the Company was not a PFIC for the taxable year ended December 31, 2022, or will not be classified as a PFIC for the current taxable year or any future taxable year.

If the Company is considered a PFIC at any time that a U.S. Holder holds the ordinary shares or ADSs, any gain recognized by the U.S. Holder on a sale or other disposition of the ordinary shares or ADSs, as well as the amount of any "excess distribution" (as defined below) received by the U.S. Holder, would be allocated ratably over the U.S. Holder's holding period for the ordinary shares or ADSs. The amounts allocated to the taxable year of the sale or other disposition (or the taxable year of receipt, in the case of an excess distribution) and to any year before the Company became a PFIC would be taxed as ordinary income. The amount allocated to each other taxable year would be subject to tax at the highest rate in effect for individuals or corporations, as appropriate, for that taxable year, and an interest charge would be imposed. For the purposes of these rules, an excess distribution is the amount by which any distribution received by a U.S. Holder on the ordinary shares or ADSs exceeds 125% of the average of the annual distributions on the ordinary shares or ADSs received during the preceding three years or the U.S. Holder's holding period, whichever is shorter. In addition, if the Company is a PFIC and any of the Company's subsidiaries is also a PFIC, a U.S. Holder may also be subject to the adverse tax consequences described above with respect to any gain or "excess distribution" realized or deemed realized in respect of such subsidiary PFIC.

Certain elections may be available that would result in alternative treatments (such as mark-to-market treatment or treatment as a qualified electing fund ("QEF")) of the ordinary shares or ADSs if the Company is considered a PFIC. However, the Company does not expect to furnish U.S. Holders of the ordinary shares or ADSs with the tax information necessary to enable a U.S. Holder to make a QEF election. In addition, an election for mark-to-market treatment is unlikely to be available to mitigate any adverse tax consequences with respect to a subsidiary that is also a PFIC. If the Company is considered a PFIC, a U.S. Holder will also be subject to annual information reporting requirements. U.S. Holders should consult their tax advisors about the potential application of the PFIC rules to an investment in the ordinary shares or ADSs and the potential consequences related thereto.

#### Information Reporting and Backup Withholding
Distributions on the ordinary shares or ADSs and proceeds from the sale, exchange or redemption of the ordinary shares or ADSs may be subject to information reporting to the IRS and possible U.S. backup withholding. Backup withholding will not apply, however, to a U.S. Holder that furnishes a correct taxpayer identification number and certifies that it is not subject to backup withholding or that is otherwise exempt from backup withholding. U.S. Holders that are required to establish their exempt status generally must provide such certification on IRS Form W-9.

Backup withholding is not an additional tax. Amounts withheld as backup withholding may be credited against a U.S. Holder's U.S. federal income tax liability, and such holder may obtain a refund of any excess amounts withheld under the backup withholding rules by filing the appropriate claim for refund with the IRS and furnishing any required information in a timely manner. U.S. Holders should consult their tax advisors regarding the application of the U.S. information reporting and backup withholding rules.

#### Foreign Financial Asset Reporting
Certain U.S. Holders may be required to report information relating to an interest in the ordinary shares or ADSs, subject to certain exceptions (including an exception for ordinary shares or ADSs held in accounts maintained by certain financial institutions). Penalties can apply if U.S. Holders fail to satisfy such reporting requirements. U.S. Holders should consult their tax advisors regarding the effect, if any, of this requirement on their ownership and disposition of the ordinary shares or ADSs.

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#### U.S. Foreign Account Tax Compliance Act
Certain provisions of the Code and U.S. Treasury regulations (commonly collectively referred to as "FATCA") generally impose 30.0% withholding on certain "withholdable payments" and, in the future, may impose such withholding on "foreign pass thru payments" made by a "foreign financial institution" (as defined under FATCA) (an "FFI") that has entered into an agreement with the IRS to perform certain diligence and reporting obligations with respect to the FFI's U.S.-owned accounts. If the Company were to be treated as an FFI, (i) such withholding may be imposed on such payments to any other FFI (including an intermediary through which an investor may hold the ordinary shares or ADSs) that is not a "participating FFI" (as defined under FATCA) or any other investor who does not provide information sufficient to establish that the investor is not subject to withholding under FATCA, unless such other FFI or investor is otherwise exempt from FATCA and (ii) the Company may be required to report certain information regarding investors to the relevant tax authorities, which information may be shared with taxing authorities in the United States. Under current guidance, the term "foreign pass thru payment" is not defined, and it is therefore not clear whether or to what extent payments on the ordinary shares or ADSs would be considered foreign pass thru payments. Withholding on foreign pass thru payments would not be required with respect to payments made before the date that is two years after the date of publication in the Federal Register of final U.S. Treasury regulations defining the term "foreign pass thru payment." The United States has entered into an intergovernmental agreement, or IGA, with the United Kingdom (the "U.K. IGA"), which modifies the FATCA withholding regime described above. If the Company was treated as an FFI under the U.K. IGA, it would be subject to these diligence, withholding and reporting obligations under FATCA. Prospective investors should consult their tax advisors regarding the potential impact of FATCA, the U.K. IGA and any non-U.S. legislation implementing FATCA on the investment in the ordinary shares or ADSs.

**THE SUMMARY OF U.S. FEDERAL INCOME TAX CONSIDERATIONS SET OUT ABOVE IS FOR GENERAL INFORMATIONAL PURPOSES ONLY. INVESTORS ARE URGED TO CONSULT THEIR TAX ADVISORS ABOUT THE APPLICATION OF THE U.S. FEDERAL TAX RULES TO THEIR PARTICULAR CIRCUMSTANCES AS WELL AS THE STATE, LOCAL, NON-U.S. AND OTHER TAX CONSEQUENCES TO THEM OF THE PURCHASE, OWNERSHIP AND DISPOSITION OF THE ORDINARY SHARES OR ADSS.**

F. Dividends and Paying Agents

Not applicable.

G. Statement by Experts

Not applicable.

H. Documents on Display

We are subject to the informational requirements of the Exchange Act. Accordingly, we will be required to file reports and other information with the SEC, including annual reports on Form 20-F and reports on Form 6-K. The SEC maintains an internet website that contains reports and other information about issuers, like us, that file electronically with the SEC. The address of that website is www.sec.gov.

As a foreign private issuer, we are exempt under the Exchange Act from, among other things, the rules prescribing the furnishing and content of proxy statements, and our officers, directors and principal shareholders are exempt from the reporting and short swing profit recovery provisions contained in Section 16 of the Exchange Act. In addition, we will not be required under the Exchange Act to file periodic reports and financial statements with the SEC as frequently or as promptly as U.S. companies whose securities are registered under the Exchange Act. However, we will file with the SEC, within four months after the end of each subsequent fiscal year, or such applicable time as required by the SEC, an annual report on Form 20-F containing financial statements audited by an independent registered public accounting firm. We also intend to furnish certain other material information to the SEC under cover of Form 6-K.

We maintain a corporate website at coprorate.abcam.com. Information contained on, or that can be accessed through, our website does not constitute a part of this Annual Report. We also make available on the Investors section of our website, free of charge, our Annual Report and the text of our reports on Form 6-K, including any amendments to these reports, as well as certain other SEC filings, as soon as reasonably practicable after they are electronically filed with or furnished to the SEC. The information contained on our website is not incorporated by reference in this Annual Report.

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I. Subsidiary Information

Not applicable.

J. Annual Report to Security Holders

Not applicable.

#### Item 11. Quantitative and Qualitative Disclosures About Market Risk
We are exposed to a variety of risks in the ordinary course of our business, including, but not limited to, currency risk, liquidity risk and credit risk, as discussed below. We regularly assess each of these risks to minimize any adverse effects on our business as a result of those factors. See Note 26 to our consolidated financial statements, which are included elsewhere in this Annual Report, for further discussion of our exposure to these risks.

#### Currency Risk
We have transactions denominated in various currencies, with the principal currency exposure being fluctuations in U.S. Dollars ("USD"), Euros, Japanese Yen, and Chinese Renminbi ("RMB"). Collectively, these currencies make up approximately 90% of our revenue and cash inflows. While a large portion of our manufacturing and research and development costs are USD and RMB, giving a natural offset against the currency inflows, the majority of administration costs remain as pound sterling, leaving an overall net currency inflow in our cash flows.

This remaining currency exposure is centrally managed with the objective being to secure a level of certainty of pound sterling value for up to 50.0% of our future net exposure based on forecast cash flows expected to occur up to 12 months ahead. We use forward currency contracts to achieve this objective and apply hedge accounting where applicable. Foreign currency forward contracts are valued using quoted forward exchange rates and yield curves matching maturities of the contracts.

A decrease of 10.0% in the USD/pound sterling exchange rate would have resulted in a decrease of our other comprehensive income by £1.4 million for the year ended December 31, 2022. A decrease of 10.0% in the Euro/pound sterling exchange rate would have resulted in a decrease of our other comprehensive income by £1.8 million for the year ended December 31 2022. If the pound sterling fluctuates significantly against the USD or Euro, it may have a negative impact on our results of operations.

#### Liquidity Risk
Liquidity risk is our risk of not having sufficient funds available in the right currency to settle its obligations as they fall due. As of December 31, 2021 and 2022, we held cash and cash equivalents of £95.1 million and £89.0 million, respectively, with drawings of £119.6 million as at the year ended December 31, 2022, £119.6 million in the prior year. As of December 31, 2022 we also had access to further loan funding from the RCF of £180.0 million. On March 7, 2023, we replaced our existing RCF due to expire on January 31, 2024 with a new £300.0 million RCF having a minimum term of 4 years, with the option to extend for one further year, and no accordion option. The amount of £120.0m drawn down on the previous RCF was rolled forward into the new facility.

We generate funds from operational activities in excess of our operational requirements and have substantial cash balances available for our current investment activities. The Board reviews our funding requirement as part of the budgeting and long-term planning processes and considers as necessary alternative possible sources of funding where the requirement is not satisfied by our forecast operational cash generation.

We manage liquidity risk by maintaining an adequate level of easily accessible cash reserves, in a currency profile representative of our cost base and matching customer and supplier terms where possible. We also have access to daily currency trading facilities, which provides the ability to convert currency within the agreed settlement limits as required.

#### Credit Risk
We are exposed to credit risk on our financial assets; however, there is not deemed to be a significant exposure due to the nature of our customer base and the types of transaction that are undertaken. Exposure to

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counterparty default risk is managed by limiting the concentration of funds and contracts held with individual financial institutions and ensuring funds are only placed with institutions or in products rated BBB or above by Standard & Poor's.

#### Item 12. Description of Securities Other than Equity Securities
A. Debt Securities

Not applicable.

B. Warrants and Rights

Not applicable.

C. Other Securities

Not applicable.

D. American Depositary Shares

#### Fees and Charges
ADS holders are required to pay the following fees under the terms of the deposit agreement:

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| | |
|:---|:---|
| **Service** | **Fees** |
| • Issuance of ADSs (*e.g.*, an issuance of ADS upon a deposit of ordinary shares, upon a change in the ADS(s) to ordinary share(s) ratio, or for any other reason, excluding ADS issuances as a result of distributions of ordinary shares) | Up to U.S. 5¢ per ADS issued |
| • Cancellation of ADSs (*e.g.*, a cancellation of ADSs for delivery of deposited property, upon a change in the ADS(s) to ordinary share(s) ratio, or for any other reason) | Up to U.S. 5¢ per ADS cancelled |
| • Distribution of cash dividends or other cash distributions (e.g., upon a sale of rights and other entitlements) | Up to U.S. 5¢ per ADS held |
| • Distribution of ADSs pursuant to (i) stock dividends or other free stock distributions, or (ii) exercise of rights to purchase additional ADSs | Up to U.S. 5¢ per ADS held |
| • Distribution of securities other than ADSs or rights to purchase additional ADSs (*e.g.*, upon a spin off) | Up to U.S. 5¢ per ADS held |
| • ADS Services | Up to U.S. 5¢ per ADS held on the applicable record date(s) established by the depositary |
| • Registration of ADS transfers (*e.g.*, upon a registration of the transfer of registered ownership of ADSs, upon a transfer of ADSs into DTC and vice versa, or for any other reason) | Up to U.S. 5¢ per ADS (or fraction thereof) transferred |
| • Conversion of ADSs of one series for ADSs of another series (*e.g.*, upon conversion of Partial Entitlement ADSs for Full Entitlement ADSs, or upon conversion of Restricted ADSs (each as defined in the Deposit Agreement) into freely transferable ADSs, and *vice versa*). | Up to U.S. 5¢ per ADS (or fraction thereof) converted |

---

ADS holders are also responsible to pay certain charges such as:

• taxes (including applicable interest and penalties) and other governmental charges;

• the registration fees as may from time to time be in effect for the registration of ordinary shares on the share register and applicable to transfers of ordinary shares to or from the name of the custodian, the depositary or any nominees upon the making of deposits and withdrawals, respectively;

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• certain cable, telex and facsimile transmission and delivery expenses;

• the fees, expenses, spreads, taxes and other charges of the depositary and/or service providers (which may be a division, branch or affiliate of the depositary) in the conversion of foreign currency;

• the reasonable and customary out-of-pocket expenses incurred by the depositary in connection with compliance with exchange control regulations and other regulatory requirements applicable to ordinary shares, ADSs and ADRs; and

• the fees, charges, costs and expenses incurred by the depositary, the custodian, or any nominee in connection with the ADR program.

ADS fees and charges for (i) the issuance of ADSs, and (ii) the cancellation of ADSs are charged to the person for whom the ADSs are issued (in the case of ADS issuances) and to the person for whom ADSs are cancelled (in the case of ADS cancellations). In the case of ADSs issued by the depositary into DTC, the ADS issuance and cancellation fees and charges may be deducted from distributions made through DTC, and may be charged to the DTC participant(s) receiving the ADSs being issued or the DTC participant(s) holding the ADSs being cancelled, as the case may be, on behalf of the beneficial owner(s) and will be charged by the DTC participant(s) to the account of the applicable beneficial owner(s) in accordance with the procedures and practices of the DTC participants as in effect at the time. ADS fees and charges in respect of distributions and the ADS service fee are charged to the holders as of the applicable ADS record date. In the case of distributions of cash, the amount of the applicable ADS fees and charges is deducted from the funds being distributed. In the case of (i) distributions other than cash and (ii) the ADS service fee, holders as of the ADS record date will be invoiced for the amount of the ADS fees and charges and such ADS fees and charges may be deducted from distributions made to holders of ADSs. For ADSs held through DTC, the ADS fees and charges for distributions other than cash and the ADS service fee may be deducted from distributions made through DTC and may be charged to the DTC participants in accordance with the procedures and practices prescribed by DTC and the DTC participants in turn charge the amount of such ADS fees and charges to the beneficial owners for whom they hold ADSs. In the case of (i) registration of ADS transfers, the ADS transfer fee will be payable by the ADS Holder whose ADSs are being transferred or by the person to whom the ADSs are transferred, and (ii) conversion of ADSs of one series for ADSs of another series, the ADS conversion fee is payable by the Holder whose ADSs are converted or by the person to whom the converted ADSs are delivered.

In the event of refusal to pay the depositary fees, the depositary may, under the terms of the deposit agreement, refuse the requested service until payment is received or may set off the amount of the depositary fees from any distribution to be made to the ADS holder. Certain depositary fees and charges (such as the ADS services fee) may become payable shortly after acquiring our ADSs. Note that the fees and charges that ADS holders may be required to pay may vary over time and may be changed by us and by the depositary. ADS holders receive prior notice of such changes. The depositary may reimburse us for certain expenses incurred by us in respect of the ADR program, by making available a portion of the ADS fees charged in respect of the ADR program or otherwise, upon such terms and conditions as we and the depositary agree from time to time.

#### Payment of Taxes
ADS holders are responsible for the taxes and other governmental charges payable on the ADSs and the securities represented by the ADSs. We, the depositary and the custodian may deduct from any distribution the taxes and governmental charges payable by holders and may sell any and all property on deposit to pay the taxes and governmental charges payable by holders. ADS holders are liable for any deficiency if the sale proceeds do not cover the taxes that are due.

The depositary may refuse to issue ADSs, to deliver, transfer, split and combine ADRs or to release securities on deposit until all taxes and charges are paid by the applicable holder. The depositary and the custodian may take reasonable administrative actions to obtain tax refunds and reduced tax withholding for any distributions on your behalf. However, ADS holders may be required to provide to the depositary and to the custodian proof of taxpayer status and residence and such other information as the depositary and the custodian may require to fulfill legal obligations. ADS holders are required to indemnify us, the depositary and the custodian for any claims with respect to taxes based on any tax benefit obtained for their behalf.

#### Foreign Currency Conversion
The depositary will arrange for the conversion of all foreign currency received into U.S. dollars if such conversion is practical, and it will distribute the U.S. dollars in accordance with the terms of the deposit agreement. ADS holders may have to pay fees and expenses incurred in converting foreign currency, such as fees and expenses incurred in complying with currency exchange controls and other governmental requirements.

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If the conversion of foreign currency is not practical or lawful, or if any required approvals are denied or not obtainable at a reasonable cost or within a reasonable period, the depositary may take the following actions in its discretion:

• Convert the foreign currency to the extent practical and lawful and distribute the U.S. dollars to the holders for whom the conversion and distribution is lawful and practical.

• Distribute the foreign currency to holders for whom the distribution is lawful and practical.

• Hold the foreign currency (without liability for interest) for the applicable holders.

The remainder of the information called for by this Item is set forth in Exhibit 2.3 to this Annual Report and is incorporated by reference into this Annual Report.

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#### PART II

#### Item 13. Defaults, Dividend Arrearages and Delinquencies
None.

#### Item 14. Material Modifications to the Rights of Security Holders and Use of Proceeds

#### Use of Proceeds
On October 21, 2020, the SEC declared effective our registration statement on Form F1 (File No. 333249526), as amended, filed in connection with our IPO (the "Registration Statement"). Pursuant to the Registration Statement, we registered the offer and sale of 10,287,000 of our ADSs, representing the same number of ordinary shares with a proposed maximum aggregate offering price of approximately $180 million. We offered 8,945,218 ADSs and provided the underwriters the option to purchase an additional 1,341,782 ADSs. Morgan Stanley & Co. LLC and BofA Securities, Inc LLC acted as representatives of the underwriters for the offering.

On October 26, 2020, we issued and sold 10,287,000 ADSs (including 1,341,782 ADSs that were subject to underwriters option to purchase additional ADS), representing the same number of our ordinary shares at a price to the public of $17.50 per share. The aggregate offering price of the shares sold was approximately $180 million. Upon completion of the IPO on October 26, 2020, we received net proceeds of $164.7 million, after deducting underwriting discounts and commissions of $15.3 million and offering expenses of $2.8 million. No payments for such expenses were made directly or indirectly to (i) any of our officers or directors or their associates, (ii) any persons owning 10% or more of any class of our equity securities or (iii) any of our affiliates.

The offering terminated after the sale of all securities registered pursuant to the Registration Statement. As of December 31, 2022, there has been no material change in the expected use of the net proceeds from our initial public offering as described in our final prospectus, dated October 21, 2020, filed with the SEC on October 22, 2020 pursuant to Rule 424(b) relating to our Registration Statement.

#### Item 15. Controls and Procedures

#### Evaluation of Disclosure Controls and Procedures
Our management, including our Chief Executive Officer ("CEO") and our Chief Financial Officer ("CFO"), evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the "Exchange Act")) as of December 31, 2022. Based on that evaluation, our CEO and CFO concluded that, as a result of the material weaknesses in our internal control over financial reporting ("ICFR") as described below, as of December 31, 2022, our disclosure controls and procedures were not effective to provide reasonable assurance that the information required to be disclosed by us in the reports that we file or submit under the Exchange Act was being recorded, processed, summarized and reported within the time periods specified in the SEC rules and forms, and that such information was being communicated to our management, including our CEO and CFO, as appropriate, to allow for timely decisions regarding the required disclosures under the Exchange Act.

#### Management's Annual Report on Internal Control over Financial Reporting
Our management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act). Under Sarbanes Oxley Act of 2002 ("SOX") framework, our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of consolidated financial statements for external purposes in accordance with International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board. Our internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of consolidated financial statements in accordance with IFRS, and that our receipts and expenditures are being made only in accordance with authorizations of our management and directors; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the consolidated financial statements.

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Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of the effectiveness of internal controls to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Our management, under the supervision of the CEO and CFO, and under the oversight of the Board of Directors, assessed the effectiveness of our internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Based on this assessment, our management concluded that, as of December 31, 2022, our internal control over financial reporting was not effective because of the material weaknesses described below. A material weakness, as defined in SOX, is a control deficiency, or combination of control deficiencies, in internal control over financial reporting such that there is a reasonable possibility that a material misstatement of the annual or interim consolidated financial statements will not be prevented or detected on a timely basis.

Notwithstanding the identified material weaknesses, the CEO and CFO have concluded that the consolidated financial statements included in this Annual Report fairly represent in all material respects our financial condition, operational results, and cash flows for the period.

#### Material Weaknesses in Internal Control Over Financial Reporting
As of December 31, 2022, the following material weaknesses remain within our environment:

**Inventory:** As previously disclosed on our fiscal year 2021 Form 20-F (File No. 001-39633), we identified that we did not design and maintain effective controls over inventory. Specifically, we did not design and maintain effective controls over the completeness, accuracy, existence, and valuation of inventory. System limitations within our legacy system, Adminsite, required our complex inventory processes to operate manually. As of December 31, 2022, inadequate or ineffective controls within the inventory cycle remained, leading to a material weakness.

**Revenue and Accounts Receivable:** As previously disclosed on our fiscal year 2021 Form 20-F (File No. 001-39633), we identified inadequate or ineffective controls within our revenue cycle, resulting in a material weakness. As Adminsite is unable to enforce segregation of duties or produce detailed audit logs, we were unable to design or implement controls to adequately mitigate the potential for risk of unauthorized changes being made to purchase order pricing, quantities, or discount rates. In addition, we did not have robust, established, and documented review procedures in place to effectively compensate for the system limitations and did not maintain effective manual controls over the review and approval of manual invoices. Furthermore, in September 2022, as a result of implementing a sales and distribution module within our Oracle ERP system management was forced to suspend the execution of key controls and activities within accounts receivable ("AR") including credit checks and timely invoice distribution. As a result, as of December 31, 2022 we still had inadequate or ineffective controls within our revenue cycle extending to the receivables cycle, resulting in a material weakness.

**Information Technology ("IT") General Controls ("ITGC"), including Adminsite (***an in house developed sales order processing and finished goods inventory system)***:** As previously disclosed, (first disclosed in the Company's Registration Statement Form F-1 in 2020 and later in the fiscal year 2021 Form 20-F, File No. 001-39633) we did not design and maintain effective controls over ITGC for all information systems relevant to the preparation of our financial statements, including Adminsite. During 2022 Management began the process of remediation to address the control deficiencies that led to this material weakness. Significant progress was made in all areas of ITGCs, including: (i) user access and segregation of duties, (ii) computer operations to ensure that critical batch jobs are monitored, and data backups are authorized and monitored, (iii) system-generated reports used in the execution of manual controls, and (iv) Service Organization monitoring (SOC 1). Additionally, management significantly improved the overall quality of supporting documentation and increased standardization. Although we have made significant progress in remediating the aforementioned deficiencies, management maintains a material weakness in ITGC as of December 31, 2022 because remaining control activities are still required as discussed in the section Management's Planned Remediation Activities. In addition, our business process controls (automated and manual) that are dependent on the affected ITGC were also deemed ineffective because they could have been adversely impacted.

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#### Management's Planned Remediation Activities
In order to address the material weaknesses in internal control over financial reporting at December 31, 2022, management has commenced remediation efforts, which include:

**Inventory:** Management has already made progress over inventory counts, including standardizing the documentation, process, and frequency of inventory counts. Management plans to remediate the remaining material weakness by:

• Improving incorporation of stock data and controls into the ERP environment.

• Continuing to evaluate and refine the design, implementation, and documentation of the internal controls to ensure controls address the relevant risks.

• Continuing training once the systems are live to reinforce expectations regarding appropriate evidence of the performance of the controls, including proper evidence over the completeness and accuracy of data within key reports leveraged in the execution of internal controls.

**Revenue and Accounts Receivable:** Management reinstated key AR activities as of the date of this Annual Report and plans to remediate the material weakness by:

• Implementing and rolling out new systems globally, specifically covering pricing, promotions, and discounts. The new systems will enable management to secure system access, enforce segregation of duties, formally track audit trails/logs, and leverage standard system reports to enhance data validation procedures, documentation, and evidence in key areas, such as revenue and accounts receivable.

• Conducting a review of the current internal controls within this area to ensure the controls address the relevant risks and are properly designed; and implementing controls which incorporate the new process imposed by the system, including new reports.

**Information Technology ("IT") General Controls ("ITGC"), including Adminsite** *(an in house developed sales order processing and finished goods inventory system)***:**

Remediations are underway; Management plans to remediate the material weakness by:

• Enhancing privileged access and change management reviews.

• Globally implementing and rolling out new systems covering pricing, promotions, and discounts, thereby eliminating Adminsite as one of our information systems relevant to preparation of our financial statements.

• Designing and implementing ITGC controls for the new systems.

#### Remediation of Previously Disclosed Material Weaknesses
The following captures the activities made by management related to the material weaknesses that were previously identified and which have been remediated at December 31, 2022.

**Goods Received Not Invoiced ("GRNI"):** As first disclosed in September 2021 (File No. 001-39633), management identified ineffective and insufficient completeness and accuracy of records in the transactional activity reporting used in the performance of review and variance analysis for the Goods Received Not Invoiced account. Management began the process of remediation to address the control deficiency which led to the material weakness. Specifically, we designed suitable reports to streamline data compilation, enhanced procedures to validate the completeness and accuracy of key reports utilized in the execution of GRNI controls, standardized the documentation and enhanced and implemented new controls and procedures.

Based on the results of our testing, management has concluded that the controls are adequately designed and have operated effectively for a sufficient period of time as of December 31, 2022. Accordingly, the material weakness related to GRNI is remediated.

**Payroll:** As first disclosed in December 2021 (File No. 001-39633), management identified effective controls over the preparation and review of payroll because we did not retain sufficient documentation evidencing a detailed review of key data inputs for completeness and accuracy. Management began the process of remediation to address the control deficiencies which led to the material weakness. Specifically, we implemented segregation of duties of incompatible roles, formalized and implemented reviews which included

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validation and documentation procedures over the completeness and accuracy of data.

Based on the results of our testing, management has concluded that the controls are adequately designed and have operated effectively for a sufficient period of time during 2022. Accordingly, the material weakness related to Payroll is remediated.

**Manual Journal Entries:** As first disclosed in December 2021 (File No. 001-39633), management identified ineffective controls over the review of manual journal entries because we did not retain sufficient documentation evidencing a detailed review of key data inputs for completeness and accuracy. Management began the process of remediation to address the control deficiencies which led to the material weakness. We implemented reviews of all journal entries with required supervisory reviews of larger value journal entries; these measures provide more checks to our accounts in a way that is measured and commensurate with the associated risk. We built, tested, and deployed system workflow solutions and reporting solutions. Additionally, we enhanced documentation, and review procedures, and built templates to aid in the execution of controls.

Based on the results of our testing, management has concluded that the controls are adequately designed and have operated effectively for a sufficient period of time during 2022. Accordingly, the material weakness related to manual journal entries is remediated.

#### Attestation Report of Independent Registered Public Accounting Firm
PricewaterhouseCoopers LLP, an independent registered public accounting firm, has audited the effectiveness of our internal control over financial reporting as of December 31, 2022, as stated in their report which appears on page F-2 herein.

#### Changes in Internal Control Over Financial Reporting
Other than the remediation efforts described above taken to address the material weaknesses during the period covered by this Annual Report, there were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act) that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

#### Item 16. [Reserved]

#### Item 16A. Audit Committee Financial Expert
Our board of directors has determined that Giles Kerr, a member of our audit committee, is a "financial expert," as defined in Item 16A of Form 20-F. Mr. Kerr is "independent," as defined in Rule 10A-3 under the Exchange Act. For a description of Mr. Kerr's experience, see Item 6.A. "Directors, Senior Management and Employees—Executive Officers and Board Members."

#### Item 16B. Code of Ethics
We have adopted a Code of Conduct, which covers a broad range of matters including the handling of conflicts of interest, compliance issues and other corporate policies such as equal opportunity and non-discrimination standards. This Code of Conduct applies to all of our executive officers, board members and employees. Our Code of Conduct is intended to meet the definition of "code of ethics" under Item 16B of 20-F under the Exchange Act.

We will disclose on our website any amendment to, or waiver from, a provision of our Code of Conduct that applies to our directors or executive officers to the extent required under the rules of the SEC or Nasdaq. A current copy of the Code of Conduct is available on the Investors section of our website at corporate.abcam.com. The information contained on our website is not incorporated by reference in this Annual Report. We granted no waivers under our Code of Business Conduct and Ethics in the year ended December 31, 2022.

#### Item 16C. Principal Accountant Fees and Services
The consolidated financial statements of Abcam plc at December 31, 2021 and December 31, 2022 that appear in this Annual Report have been audited by PricewaterhouseCoopers LLP, independent registered public accounting firm, as set forth in their report thereon appearing elsewhere herein, and are included in reliance upon

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##### [**Table of Contents**](#toc)
such report given on the authority of such firm as experts in accounting and auditing. The registered business address of PricewaterhouseCoopers LLP is The Maurice Wilkes Building, St John's Innovation Park, Cowley Road, Cambridge, CB4 0DS, United Kingdom. The table below sets out the total amount billed to us by PricewaterhouseCoopers LLP for services performed in the years ended December 31, 2021 and 2022, and breaks down these amounts by category of service:

---

| | | |
|:---|:---|:---|
|  | **Year Ended**<br>**December 31, 2021** | **Year Ended<br>December 31, 2022** |
|  | **£'000** | **£'000** |
|  Audit Fees | 1315 | 1484 |
|  All Other Fees | 6 |  |
|  **Total** | **1321** | **1484** |

---

#### Audit Fees
Audit fees for the year ended December 31, 2021 and the year ended December 31, 2022 were related to the audit of our consolidated financial statements, subsidiary the companies pursuant to legislation and interim review services provided in connection with statutory and regulatory filings or engagements.

#### All Other Fees
All other fees in the year ended December 31, 2021 were related to services provided in connection with the Abcam being listed on the Nasdaq Global Select Market. There were no other fees in the year ended December 31, 2022.

#### Pre-Approval Policies and Procedures
The advance approval of the Audit Committee or members thereof, to whom approval authority has been delegated, is required for all audit and non-audit services provided by our auditors.

All services provided by our auditors are approved in advance by either the Audit Committee or members thereof, to whom authority has been delegated, in accordance with the Audit Committee's pre-approval policy.

#### Item 16D. Exemptions from the Listing Standards for Audit Committees
Not applicable.

#### Item 16E. Purchases of Equity Securities by the Issuer and Affiliated Purchasers
None.

#### Item 16F. Change in Registrant's Certifying Accountant
None.

#### Item 16G. Corporate Governance
As a public company incorporated in England and Wales that has its ADSs listed on Nasdaq, we are not required to have regard to the U.K. Corporate Governance Code. Our board is, however, committed to maintaining high standards of corporate governance.

We are a "foreign private issuer." As a "foreign private issuer," as defined by the SEC, we are permitted to follow home country corporate governance practices instead of certain corporate governance practices required by Nasdaq applicable to U.S. domestic issuers. We intend to voluntarily follow most Nasdaq corporate governance rules. However, we intend to follow U.K. corporate governance practices in lieu of the Nasdaq corporate governance rules as follows:

• We do not intend to follow Nasdaq Rule 5620(c) regarding quorum requirements applicable to meetings of shareholders. Such quorum requirements are not required under English law. In accordance with generally accepted business practice, our Articles of Association provide alternative quorum requirements that are generally applicable to meetings of shareholders.

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##### [**Table of Contents**](#toc)
• We do not intend to follow Nasdaq Rule 5605(b)(2), which requires that independent directors regularly meet in executive session, where only independent directors are present. Our independent directors may choose to meet in executive session at their discretion.

• We do not intend to follow Nasdaq Rule 5635(c), which requires shareholder approval for the establishment of or any material amendments to equity compensation or purchase plans or other equity compensation arrangements. We will follow English law with respect to any requirement to obtain shareholder approval in connection with equity compensation or purchase plans or other equity compensation arrangements.

• We do not intend to follow Nasdaq Rule 5635(d), which requires shareholder approval in order to enter into any transaction, other than a public offering, involving the sale, issuance or potential issuance by the Company of ordinary shares (or securities convertible into or exercisable for ordinary shares) equal to 20% or more of the outstanding share capital of the Company or 20% or more of the voting power outstanding before the issuance for less than the greater of book or market value of the ordinary shares. We will follow English law with respect to any requirement to obtain shareholder approval in connection with any private placements of equity securities.

We may in the future decide to rely on other foreign private issuer exemptions with respect to some or all of the other Nasdaq corporate governance rules.

Although we may rely on certain home country corporate governance practices, we are required to comply with the Notification of Noncompliance requirement (Nasdaq Rule 5625) and the Voting Rights requirement (Nasdaq Rule 5640). Further, we are required to have an audit committee that satisfies Nasdaq Rule 5605(c)(3), which addresses audit committee responsibilities and authority, and consists of committee members that meet the independence requirements of Nasdaq Rule 5605(c)(2)(A)(ii).

If we cease to be a "foreign private issuer" under the Nasdaq rules and the Exchange Act, as applicable, we will take all action necessary to comply with applicable Nasdaq corporate governance rules.

Because we are a foreign private issuer, our directors and senior management are not subject to short-swing profit and insider trading reporting obligations under Section 16 of the Exchange Act. They are, however, subject to the obligations to report changes in share ownership under Section 13 of the Exchange Act and related SEC rules.

#### Item 16H. Mine Safety Disclosure
Not applicable.

#### Item 16I. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections
Not applicable.

#### Item 17. Financial Statements
We have provided financial statements pursuant to Item 18.

#### Item 18. Financial Statements
The audited consolidated financial statements as required under Item 18 are attached hereto starting on page F-1 of this Annual Report. The audit report of PricewaterhouseCoopers LLP, an independent registered public accounting firm, is included herein preceding the audited consolidated financial statements.

#### Item 19. Exhibits

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| <br>**Exhibit No.** | <br>**Description** |<br>**Form** | **File No.** | **Exhibit<br>No.** | **Filing Date** | **Filed /<br>Furnished** |
| 1.1 | [Articles of Association of the Registrant](http://www.sec.gov/Archives/edgar/data/1492074/000119312520262444/d930102dex31.htm) | F-1 | 333-249263 | 3.1 | 10/02/2020 |  |
| 2.1 | [Deposit Agreement](http://www.sec.gov/Archives/edgar/data/1492074/000119312522074104/d267980dex21.htm) | 20-F | 001-39633 | 2.1 | 03/14/2022 |  |
| 2.2 | [Form of American Depositary Receipt (included in Exhibit 2.1)](http://www.sec.gov/Archives/edgar/data/1492074/000119312522074104/d267980dex21.htm) | 20-F | 001-39633 | 2.2 | 03/14/2022 |  |

---

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##### [**Table of Contents**](#toc)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | | | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| <br>**Exhibit No.** | <br>**Description** |<br>**Form** | **File No.** | **Exhibit<br>No.** | **Filing Date** | **Filed /<br>Furnished** |
| 2.3 | [Description of Securities](d433862dex23.htm) |  |  |  |  | \* |
| 4.1† | [Abcam plc Long Term Incentive Plan](http://www.sec.gov/Archives/edgar/data/1492074/000119312520262444/d930102dex101.htm) | F-1 | 333-249263 | 10.1 | 10/02/2020 |  |
| 4.2† | [AbShare](http://www.sec.gov/Archives/edgar/data/1492074/000119312520262444/d930102dex102.htm) | F-1 | 333-249263 | 10.2 | 10/02/2020 |  |
| 4.3† | [Abcam plc Share Incentive Plan](http://www.sec.gov/Archives/edgar/data/1492074/000119312520262444/d930102dex103.htm) | F-1 | 333-249263 | 10.3 | 10/02/2020 |  |
| 4.4† | [The Abcam plc Annual Bonus Plan](http://www.sec.gov/Archives/edgar/data/1492074/000119312520262444/d930102dex104.htm) | F-1 | 333-249263 | 10.4 | 10/02/2020 |  |
| 4.5† | [Rules of the Abcam plc Company Share Option Plan 2009](http://www.sec.gov/Archives/edgar/data/1492074/000119312520262444/d930102dex105.htm) | F-1 | 333-249263 | 10.5 | 10/02/2020 |  |
| 4.6† | [Rules of the Abcam 2005 Share Option Scheme](http://www.sec.gov/Archives/edgar/data/1492074/000119312520262444/d930102dex106.htm) | F-1 | 333-249263 | 10.6 | 10/02/2020 |  |
| 4.7† | [Rules of the Abcam 2015 Share Option Plan](http://www.sec.gov/Archives/edgar/data/1492074/000119312520262444/d930102dex107.htm) | F-1 | 333-249263 | 10.7 | 10/02/2020 |  |
| 4.8† | [Abcam Plc Profitable Growth Incentive Plan](http://www.sec.gov/Archives/edgar/data/1492074/000119312521215217/d90207dex991.htm) | S-8 | 333-257893 | 99.1 | 07/14/2021 |  |
| 4.9† | [Abcam Plc Growth Plan](http://www.sec.gov/Archives/edgar/data/1492074/000119312522088153/d314461dex991.htm) | S-8 | 333-263946 | 99.1 | 03/29/2022 |  |
| 8.1 | [List of Subsidiaries of the Registrant](http://www.sec.gov/Archives/edgar/data/1492074/000119312522074104/d267980dex81.htm) | 20-F | 001-39633 | 8.1 | 03/14/2022 |  |
| 12.1 | [Principal Executive Officer Certification Pursuant to Section 302 of the Sarbanes Oxley Act of 2002.](d433862dex121.htm) |  |  |  |  | \* |
| 12.2 | [Principal Financial Officer Certification Pursuant to Section 302 of the Sarbanes Oxley Act of 2002.](d433862dex122.htm) |  |  |  |  | \* |
| 13.1 | [Principal Executive Officer Certification Pursuant to Section 906 of the Sarbanes Oxley Act of 2002.](d433862dex131.htm) |  |  |  |  | \*\* |
| 13.2 | [Principal Financial Officer Certification Pursuant to Section 906 of the Sarbanes Oxley Act of 2002.](d433862dex132.htm) |  |  |  |  | \*\* |
| 15.1 | [Consent of PricewaterhouseCoopers LLP](d433862dex151.htm) |  |  |  |  | \* |
| 101.INS | Inline XBRL Instance Document |  |  |  |  | # |
| 101.SCH | Inline XBRL Taxonomy Extension Schema Document |  |  |  |  | # |
| 101.PRE | Inline XBRL Taxonomy Presentation Linkbase Document |  |  |  |  | # |
| 101.CAL | Inline XBRL Taxonomy Calculation Linkbase Document |  |  |  |  | # |
| 101.LAB | Inline XBRL Taxonomy Label Linkbase Document |  |  |  |  | # |
| 101.DEF | Inline XBRL Taxonomy Extension Definition Linkbase Document |  |  |  |  | # |
| 104 | Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101) |  |  |  |  | # |

---

The following are filed as exhibits hereto:

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\* Filed herewith.

\*\* Furnished herewith.

† Indicates management contract or compensatory plan or arrangement.

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##### [**Table of Contents**](#toc)
Certain agreements filed as exhibits to this Annual Report contain representations and warranties that the parties thereto made to each other. These representations and warranties have been made solely for the benefit of the other parties to such agreements and may have been qualified by certain information that has been disclosed to the other parties to such agreements and that may not be reflected in such agreements. In addition, these representations and warranties may be intended as a way of allocating risks among parties if the statements contained therein prove to be incorrect, rather than as actual statements of fact. Accordingly, there can be no reliance on any such representations and warranties as characterizations of the actual state of facts. Moreover, information concerning the subject matter of any such representations and warranties may have changed since the date of such agreements.

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##### [**Table of Contents**](#toc)

#### SIGNATURES
The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this annual report on its behalf.

---

| | |
|:---|:---|
| **ABCAM PLC** | **ABCAM PLC** |
| Date: March 20, 2023 | Date: March 20, 2023 |
| By: | /s/ Alan Hirzel |
| Name: | Alan Hirzel |
| Title: | Chief Executive Officer |

---

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##### [**Table of Contents**](#toc)
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

---

| | |
|:---|:---|
| [Report of Independent Registered Public Accounting Firm (PCAOB ID 876)](#fin433862_1) | F-2 |
| [Consolidated income statements](#fin433862_2) | F-5 |
| [Consolidated statements of comprehensive income](#fin433862_3) | F-6 |
| [Consolidated balance sheets](#fin433862_4) | F-7 |
| [Consolidated statements of changes in equity](#fin433862_5) | F-8 |
| [Consolidated cash flow statements](#fin433862_6) | F-9 |
| [Notes to the consolidated financial statements](#fin433862_7) | F-10 |

---

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#### **Table of Contents**
Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of Abcam plc

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Abcam plc and its subsidiaries (the "Group") as of December 31, 2022 and 2021, and the related consolidated income statements, consolidated statements of comprehensive income, consolidated statements of changes in equity and consolidated cash flow statements for the years ended December 31, 2022 and December 31, 2021, the six-months ended December 31, 2020 and the year ended June 30, 2020, including the related notes (collectively referred to as the "consolidated financial statements"). We also have audited the Group's internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Group as of December 31, 2022 and 2021, and the results of its operations and its cash flows for the years ended December 31, 2022 and December 31, 2021, the six-months ended December 31, 2020 and the year ended June 30, 2020 in conformity with International Financial Reporting Standards as issued by the International Accounting Standards Board. Also in our opinion, the Group did not maintain, in all material respects, effective internal control over financial reporting as of December 31, 2022, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO because material weaknesses in internal control over financial reporting existed as of that date related to (i) lack of controls over information technology systems that are relevant to the preparation of the consolidated financial statements, (ii) ineffective controls in pricing, quantities and discount rates in the revenue and receivables cycle including review and approval of manual invoices and (iii) ineffective controls over the completeness, accuracy and valuation of inventory.

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the annual or interim financial statements will not be prevented or detected on a timely basis. The material weaknesses referred to above are described in Management's Annual Report on Internal Control over Financial Reporting appearing under Item 15. We considered these material weaknesses in determining the nature, timing, and extent of audit tests applied in our audit of the 2022 consolidated financial statements, and our opinion regarding the effectiveness of the Group's internal control over financial reporting does not affect our opinion on those consolidated financial statements.

Basis for Opinions

The Group's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in management's report referred to above. Our responsibility is to express opinions on the Group's consolidated financial statements and on the Group's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Group in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material

------

weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that (i) relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Provision for Expected Credit Losses of Trade Receivables in Abcam Inc.

As described in Note 4 to the consolidated financial statements, accounts receivable and the provision for expected credit losses ('ECL') of trade receivables in Abcam Inc. was $54.8 million and $2.2 million, respectively, as of December 31, 2022. Management assesses the requirement for a provision of expected credit losses in line with the lifetime expected credit loss for trade receivables. The ECL is based upon the Group's historical credit loss experience that is then adjusted to account for factors that are specific to the individual customer balances, the general economic conditions and the forecast conditions at the balance sheet date. In September of 2022, a new sales and distribution module within the ERP system was implemented which interrupted operations and resulted in delays in the Group's (in particular Abcam Inc's) ability to perform credit checks and distribute invoices timely. Amounts collected may be less than amounts billed due to untimely invoice distribution, prolonged delays in collection, and other reasons unrelated to credit risk. Management applied complex and subjective judgment in estimating the provision for ECL of trade receivables.

The principal considerations for our determination that performing procedures relating to the provision for ECL of trade receivables in Abcam Inc. is a critical audit matter are (i) the significant judgment by management when developing the provision and (ii) a high degree of auditor judgement, subjectivity, and effort in performing procedures and evaluating the audit evidence obtained related to the relevance of historical credit loss experience given prolonged delays in collection caused by interrupted operations. As described in the "Opinions on the Financial Statements and Internal Control over Financial Reporting" section, a material weakness was identified in relation to this matter.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included, among others, (i) testing management's process for developing the estimate of the provision for ECL of trade receivables, (ii) evaluating the relevance and use of historical experience data as an input into the estimate, (iii) testing the completeness and accuracy of underlying data used in the estimate, (iv) testing, on a sample basis, the existence and accuracy of invoicing transactions and cash collections from the billing and collection data used in management's estimate (v) understanding management's plans for collecting outstanding accounts receivable

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and evaluating the ability to carry out those plans and (vi) performing subsequent cash receipt testing by comparing actual cash collections received subsequent to year-end to related accounts receivable outstanding as of year-end to evaluate the reasonableness of management's estimate.

/s/ PricewaterhouseCoopers LLP

Cambridge, United Kingdom

March 20, 2023

We have served as the Group's auditor since 2013.

------

Consolidated income statements

For the years ended 31 December 2022 and 2021, the six months ended 31 December 2020 and the year ended 30 June 2020

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | Note | Year ended<br> 31 December<br> 2022<br> £m | Year ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year ended<br> 30 June<br> 2020<br> £m |
|  Revenue | 5 | 361.7 | 315.4 | 147.5 | 260.0 |
|  Cost of sales |  | (91.2) | (90.8) | (42.9) | (79.8) |
|  Gross profit |  | 270.5 | 224.6 | 104.6 | 180.2 |
|  Selling, general and administrative expenses |  | (224.5**)** | (189.7) | (73.6) | (131.5) |
|  Research and development expenses |  | (56.1**)** | (27.8) | (13.7) | (38.3) |
|  Operating (loss) / profit | 6 | (10.1**)** | 7.1 | 17.3 | 10.4 |
|  Finance income | 9 | 0.4 | 0.3 | 0.2 | 0.7 |
|  Finance costs | 9 | (5.9) | (2.7) | (1.9) | (2.8) |
| (Loss) / profit before tax |  | (15.6**)** | 4.7 | 15.6 | 8.3 |
|  Tax credit / (charge) | 10 | 7.1 | (0.3) | (2.8) | 4.2 |
| (Loss) / profit for the year / period attributable to equity shareholders of the parent |  | (8.5) | 4.4 | 12.8 | 12.5 |
|  Earnings per share |  |  |  |  |  |
|  Basic | 11 | &nbsp;&nbsp;&nbsp;&nbsp;(3.7)p | 1.9p | 5.8p | 6.0p |
|  Diluted | 11 | &nbsp;&nbsp;&nbsp;&nbsp;(3.7)p | 1.9p | 5.8p | 6.0p |

---

The accompanying accounting policies and notes form an integral part of these consolidated financial statements.

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Consolidated statements of comprehensive income

For the years ended 31 December 2022 and 2021, the six months ended 31 December 2020 and the year ended 30 June 2020

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | Note | Year ended<br> 31 December<br> 2022<br> £m | Year ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year ended<br> 30 June<br> 2020<br> £m |
| (Loss) / profit for the year / period attributable to equity shareholders of the parent |  | (8.5) | 4.4 | 12.8 | 12.5 |
|  Items that may be reclassified to the income statement in subsequent years |  |  |  |  |  |
|  Movement on cash flow hedges | 26 | (0.4) | (0.1) | 1.1 | 0.7 |
|  Exchange differences on translation of foreign operations |  | 58.6 | 5.7 | (17.5) | 9.6 |
|  Tax relating to components of other comprehensive income / (expense)<br>|  | (1.3) | 0.1 | (0.2) | (0.2) |
|  Items that will not be reclassified to the income statement in subsequent years |  |  |  |  |  |
|  Movement in fair value of investment | 16 | (0.4) | (0.1) | (3.1) | 4.0 |
| Tax relating to components of other comprehensive (expense) / income<br>|  |  | 0.4 | 0.8 | (1.3) |
|  Other comprehensive income / (expense) for the year / period |  | 56.5 | 6.0 | (18.9) | 12.8 |
|  Total comprehensive income / (expense) for the<br> year / period |  | 48.0 | 10.4 | (6.1) | 25.3 |

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The accompanying accounting policies and notes form an integral part of these consolidated financial statements.

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Consolidated balance sheets

As at 31 December 2022, 31 December 2021 and 31 December 2020

---

| | | | |
|:---|:---|:---|:---|
|  | Note | As at<br>31 December<br>2022<br>£m | As at<br>31 December<br>2021\*<br>£m |
| Non-current assets |  |  |  |
|  Goodwill | 12 | 398.3 | 363.5 |
|  Intangible assets | 13 | 227.9 | 234.2 |
|  Property, plant and equipment | 14 | 80.5 | 73.5 |
|  Right-of-use assets | 15 | 79.2 | 88.2 |
|  Investments | 16 | 3.2 | 3.5 |
|  Deferred tax asset | 17 | 12.1 | 13.2 |
|  |  | 801.2 | 776.1 |
|  Current assets |  |  |  |
|  Inventories | 18 | 68.0 | 58.2 |
|  Trade and other receivables | 19 | 84.0 | 60.5 |
|  Current tax receivable |  | 13.9 | 10.5 |
|  Derivative financial instruments | 20 | 0.5 | 0.5 |
|  Cash and cash equivalents |  | 89.0 | 95.1 |
|  |  | 255.4 | 224.8 |
|  Total assets |  | 1056.6 | 1000.9 |
|  Current liabilities |  |  |  |
|  Trade and other payables | 21 | (67.8) | (69.0) |
|  Derivative financial instruments | 20 | (0.8) | (0.2) |
|  Lease liabilities | 15 | (8.5) | (9.2) |
|  Borrowings | 22 | (119.6) | (119.2) |
|  Current tax liabilities |  | (5.1) | (4.4) |
|  |  | (201.8**)** | (202.0) |
|  Net current assets |  | 53.6 | 22.8 |
|  Non-current liabilities |  |  |  |
|  Deferred tax liability | 17 | (32.1) | (41.5) |
|  Lease liabilities | 15 | (95.8) | (101.3) |
|  |  | (127.9) | (142.8) |
|  Total liabilities |  | (329.7**)** | (344.8) |
|  Net assets |  | 726.9 | 656.1 |
|  Equity |  |  |  |
|  Share capital | 23 | 0.5 | 0.5 |
|  Share premium account |  | 269.4 | 268.3 |
|  Merger reserve | 23 | 68.6 | 68.6 |
|  Own shares | 23 | (1.9) | (2.2) |
|  Translation reserve | 23 | 89.7 | 31.1 |
|  Hedging reserve | 23 | (0.1) | 0.2 |
|  Retained earnings |  | 300.7 | 289.6 |
|  Total equity attributable to the equity shareholders of the parent |  | 726.9 | 656.1 |

---

\* See note 29 for details related to the measurement period adjustment to the accounting for the acquisition of BioVision.

The accompanying accounting policies and notes form an integral part of these consolidated financial statements.

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Consolidated statements of changes in equity

For the years ended 31 December 2022 and 2021, the six months ended 31 December 2020 and the year ended 30 June 2020

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| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | Note | Share<br> capital<br> £m | Share<br> premium<br> account<br> £m | Merger<br> reserve<br> £m | Own<br> shares<br> £m | Translation<br> Reserve<br> £m | Hedging<br> reserve<br> £m | Retained<br> Earnings<br> £m | Total<br> £m |
|  Balance as at 1 July 2019 |  | 0.4 | 27.0 | 68.1 | (2.8) | 33.3 | (1.3) | 256.9 | 381.6 |
|  Profit for the year |  |  |  |  |  |  |  | 12.5 | 12.5 |
|  Other comprehensive income |  |  |  |  |  | 9.6 | 0.6 | 2.6 | 12.8 |
|  Total comprehensive income for the year |  |  |  |  |  | 9.6 | 0.6 | 15.1 | 25.3 |
|  Issue of ordinary shares, net of share issue costs |  |  | 111.2 | 0.5 | 0.3 |  |  | (0.3) | 111.7 |
|  Share-based payments inclusive of deferred tax |  |  |  |  |  |  |  | 7.4 | 7.4 |
|  Purchase of own shares |  |  |  |  |  |  |  | (0.1) | (0.1) |
|  Equity dividends | 24 |  |  |  |  |  |  | (25.0) | (25.0) |
|  Balance as at 30 June 2020 |  | 0.4 | 138.2 | 68.6 | (2.5) | 42.9 | (0.7) | 254.0 | 500.9 |
|  Profit for the period |  |  |  |  |  |  |  | 12.8 | 12.8 |
|  Other comprehensive (expense) / income |  |  |  |  |  | (17.5) | 0.9 | (2.3) | (18.9) |
|  Total comprehensive (expense) / income for the period |  |  |  |  |  | (17.5) | 0.9 | 10.5 | (6.1) |
|  Issue of ordinary shares, net of share issue costs |  | 0.1 | 126.9 |  | 0.1 |  |  | (0.1) | 127.0 |
|  Share-based payments inclusive of deferred tax |  |  |  |  |  |  |  | 7.4 | 7.4 |
|  Purchase of own shares |  |  |  |  |  |  |  | (0.1) | (0.1) |
|  Balance as at 31 December 2020 |  | 0.5 | 265.1 | 68.6 | (2.4) | 25.4 | 0.2 | 271.7 | 629.1 |
|  Profit for the year |  |  |  |  |  |  |  | 4.4 | 4.4 |
|  Other comprehensive income |  |  |  |  |  | 5.7 |  | 0.3 | 6.0 |
|  Total comprehensive income for the year |  |  |  |  |  | 5.7 |  | 4.7 | 10.4 |
|  Issue of ordinary shares, net of share issue costs |  |  | 3.2 |  | 0.2 |  |  | (0.2) | 3.2 |
|  Share-based payments inclusive of deferred tax |  |  |  |  |  |  |  | 13.4 | 13.4 |
|  Balance as at 31 December 2021 |  | 0.5 | 268.3 | 68.6 | (2.2) | 31.1 | 0.2 | 289.6 | 656.1 |
|  Loss for the year |  |  |  |  |  |  |  | (8.5**)** | (8.5**)** |
|  Other comprehensive income / (expense) |  |  |  |  |  | 58.6 | (0.3) | (1.8) | 56.5 |
|  Total comprehensive income / (expense) for the year |  |  |  |  |  | 58.6 | (0.3) | (10.3) | 48.0 |
|  Issue of ordinary shares |  |  | 1.1 |  | 0.3 |  |  | (0.5) | 0.9 |
|  Share-based payments inclusive of deferred tax |  |  |  |  |  |  |  | 21.9 | 21.9 |
|  Balance as at 31 December 2022 |  | 0.5 | 269.4 | 68.6 | (1.9) | 89.7 | (0.1) | 300.7 | 726.9 |

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The accompanying accounting policies and notes form an integral part of these consolidated financial statements.

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Consolidated cash flow statements

For the years ended 31 December 2022 and 2021, the six months ended 31 December 2020 and the year ended 30 June 2020

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | Note | Year ended<br> 31 December<br> 2022<br> £m | Year ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year ended<br> 30 June<br> 2020<br> £m |
| Cash generated from operations | 25 | 36.0 | 72.2 | 33.1 | 65.4 |
| Net income taxes (paid) / received |  | (7.3) | (9.3) | 0.2 | (2.4) |
| Net cash inflow from operating activities |  | 28.7 | 62.9 | 33.3 | 63.0 |
| Investing activities |  |  |  |  |  |
| Investment income |  | 0.4 | 0.3 | 0.2 | 0.7 |
| Purchase of property, plant and equipment |  | (16.8) | (34.5) | (11.5) | (12.7) |
| Purchase of intangible assets |  | (24.5) | (25.3) | (13.0) | (23.0) |
| Transfer of cash from / (to) escrow in respect of future capital expenditure |  | 0.3 |  | 0.4 | (0.6) |
| Purchase of investments | 16 |  | (0.1) |  | (2.2) |
| Reimbursement of leasehold improvement costs |  |  | 13.2 | 1.7 |  |
| Net cash inflow / (outflow) arising from acquisitions | 29 | 16.2 | (245.1) |  | (110.3) |
| Net cash outflow from investing activities |  | (24.4) | (291.5) | (22.2) | (148.1) |
| Financing activities |  |  |  |  |  |
| Dividends paid | 24 |  |  |  | (25.0) |
| Principal element of lease obligations |  | (11.3) | (8.8) | (3.8) | (6.8) |
| Interest element of lease obligations |  | (2.1) | (1.5) | (0.5) | (0.9) |
| Interest paid |  | (3.0) | (0.7) | (0.6) | (0.8) |
| Proceeds on issue of shares, net of issue costs |  | 1.1 | 3.2 | 127.0 | 111.2 |
| Facility arrangement fees  |  |  | (0.8) |  |  |
| Utilisation of revolving credit facility | 22 |  | 120.0 |  | 127.0 |
| Repayment of revolving credit facility | 22 |  |  | (107.0) | (20.0) |
| Purchase of own shares  |  | (0.2) |  | (0.1) | (0.1) |
| Net cash (outflow) / inflow from financing activities |  | (15.5) | 111.4 | 15.0 | 184.6 |
| Net (decrease) / increase cash and cash equivalents |  | (11.2) | (117.2) | 26.1 | 99.5 |
| Cash and cash equivalents at beginning of the year / period |  | 95.1 | 211.9 | 187.3 | 87.1 |
| Effect of foreign exchange rates on cash and cash equivalents |  | 5.1 | 0.4 | (1.5) | 0.7 |
| Cash and cash equivalents at end of the year / period | (i) | 89.0 | 95.1 | 211.9 | 187.3 |

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i) Within cash and cash equivalents at 31 December 2022 is £nil (31 December 2021: £nil, 31 December 2020: £1.3m; 30 June 2020: £0.9m) of cash relating to employee contributions to the Group's share scheme 'AbShare', which is reserved for the purpose of purchasing shares upon vesting.

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Notes to the consolidated financial statements

For the years ended 31 December 2022 and 2021, the six months ended 31 December 2020 and the year ended 30 June 2020

**1.** **Presentation of financial statements** 

a) General information

Abcam plc (the Company) is a public limited company, incorporated and domiciled in the UK and is registered in England under the Companies Act 2006. Abcam's ordinary shares are listed via American Depositary Shares on the Nasdaq Global Market and were listed on the Alternative Investment Market (AIM) of the London Stock Exchange up until 14 December 2022 when Abcam plc delisted from AIM.

b) Basis of preparation and consolidation

On 2 June 2021, the Group announced that it was amending its financial year end date from 30 June to 31 December. These financial statements are therefore presented for the years ended 31 December 2022 and 2021, the six months ended 31 December 2020 and the year ended 30 June 2020.

The consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (IFRS) as issued by the International Accounting Standards Board.

The consolidated financial statements have been presented in Sterling, the functional currency of the Company, and on the historical cost basis, except as modified to include revaluation of certain financial instruments to fair value.

The consolidated financial statements incorporate the financial statements of the Company and entities under its control (together the 'Group'). The group controls an entity where the group is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power to direct the activities of the entity.

Consolidation of a subsidiary begins when the Group obtains control over the subsidiary and ceases when the Group loses control of the subsidiary. Where necessary, adjustments are made to the financial statements of subsidiaries to bring the accounting policies in line with those used by the Group. All intra-group transactions, balances, equity, income and expenses are eliminated on consolidation.

The Group's subsidiary undertakings are shown in note 16 to these financial statements.

c) Going concern

The Group meets its day-to-day working capital requirements from the cash surpluses generated as a result of normal trading. In considering going concern, the Directors have reviewed the Group's forecasts and projections, taking account of reasonably possible changes in trading performance. These show that the Group should be able to operate within the limits of its available resources.

On 7 March 2023, the Group replaced its existing RCF which was due to expire on January 31 2024. The new RCF has a term of 4 years, with the option to extend for one further year, for an amount of £300.0m and with no accordion option. The amount of £120.0m drawn down on the previous RCF was rolled forward into the new facility. See note 31 for further details.

Accordingly, the Directors have a reasonable expectation that the Group has adequate resources to continue in operation for the foreseeable future and at least one year from the date of approval of the financial statements. For this reason, they continue to adopt the going concern basis in preparing its consolidated financial statements.

2. New accounting standards, amendments and interpretations

Standards, amendments and interpretations effective or adopted

The following standards and amendments are effective in the group's consolidated financial statements:

• Annual Improvements 2018-2020 Cycle—amendments to IFRS 1, IFRS 9, IFRS 16 and IAS 41;

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• Interest Rate Benchmark Reform—Phase 2 - Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16;

• Amendments to IFRS 3 'References to the Conceptual Framework';

• Amendments to IFRS 16 'Covid-19-related rent concessions';

• Amendments to IAS 16 'Property, plant and equipment—proceeds before intended use'; and

• Amendments to IAS 37 'Onerous contracts—cost of fulfilling a contract'.

Amendments effective during the reporting period did not have any significant impact on adoption.

Standards, amendments and interpretations not yet effective and not early adopted

The following standards and amendments have not been adopted in the group's consolidated financial statements as they are not yet effective:

• IFRS 17, 'Insurance contracts' as amended in December 2021 (effective from 1 January 2023,);

• Narrow scope amendments to IAS 1, Practice statement 2 and IAS 8 (effective from 1 January 2023);

• Amendments to IAS 12 'Deferred tax related to assets and liabilities arising from a single transaction' (effective from 1 January 2023);

• Amendments to IFRS 16 'Lease liability in a sale and leaseback' (effective from 1 January 2024); and

• Amendments to IAS 1 'Non-current liabilities with covenants' (effective from 1 January 2024).

The amendments listed above are not expected to have a material impact on the financial statements of the Group in future periods.

3. Principal accounting policies

The following paragraphs describe the main accounting policies, which have been applied consistently.

Revenue and income recognition

Revenue is measured at the fair value of the consideration received or receivable and represents amounts receivable for goods and services, net of discounts, VAT and other sales-related taxes.

Revenue from sales of goods, including revenue generated from products sold from the Group's catalogue and IVD and which represents the significant majority of the Group's revenue, is recognized upon delivery to the customer or the point at which the customer takes control of the goods if this is sooner.

Custom product and service revenue, which can be the provision of a service or the development of products for customers, is recognized at the point at which a milestone, as defined in the contract, has been completed. Each milestone is typically aligned to a customer deliverable, for example, the amount of services provided, a deliverable arising from the services or the number of products successfully developed and provided to customers, and accordingly is considered to be a performance obligation. Every milestone has a defined transaction price. If it is identified that the costs will be in excess of the contract revenue, the expected loss is recognized as an expense immediately.

Licence fee income is recognized upon delivery of the licensed technology where the Group's continued performance or future research and development services are not required. Royalty revenue is recognized on an accruals basis based on the contractual terms and the substance of the agreements with the counterparty, provided that the amount can be reliably measured and it is probable that the economic benefit will flow to the Group.

Leasing

Leased assets are capitalized on inception of the lease as right-of-use assets. A corresponding lease liability, representing the present value of the lease payments is also recognized and split between current and non-current liabilities accordingly.

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The lease liability includes; fixed payments, variable lease payments dependent on an index or rate (initially measured using the index or rate on the lease commencement date) and in substance fixed payments. The variable aspect of variable payments are recognized when the rate or index takes effect resulting in an adjustment to the liability and right-of-use asset. Currently the Group's lease portfolio does not contain variable or in substance lease payments.

The discounted lease liability is calculated where possible using the interest rate implicit in the lease or where this is not attainable the incremental borrowing rate is utilized. The incremental borrowing rate is the rate the Group would have to pay to borrow the funds necessary to obtain a similar asset under similar conditions. The Group calculates the incremental borrowing rate using risk free rate of the country where the asset is held, adjusted for length of the lease and a risk premium.

Lease payments are allocated against the principal and finance cost. Finance costs, representing the unwinding of the discount on the lease liability are charged to the income statement to produce a constant periodic rate of interest on the remaining liability.

Right-of-use assets are measured at cost including; the discounted initial lease liability, lease payments made at or before the commencement date, any initial direct costs and reduced by any lease incentives received.

Right-of-use assets are depreciated over the shorter of the non-cancellable lease period and any extension options that are considered reasonably certain to be taken or the useful life of the asset. The Group's current leases typically range from 1-20 years.

Modifications to lease agreements result in remeasurement of the lease liability and right-of-use asset.

Short term leases, defined as less than one year, and also of low value are recognized on a straight-line basis in the income statement.

There are no material lease agreements where the Group acts as a lessor.

Foreign currencies

Foreign currency transactions are booked at the exchange rate ruling at the date of the transaction. Monetary assets and liabilities denominated in foreign currency are retranslated at the rates of exchange ruling at the balance sheet date. Exchange differences arising on settlement or retranslation of monetary assets and liabilities are included in the income statement.

The results of overseas subsidiaries are translated into Sterling using the average exchange rates during the year. Assets and liabilities are translated at the rates ruling at the balance sheet date. Goodwill arising on the acquisition of a foreign operation is treated as an asset of that foreign operation and as such is translated at the relevant foreign exchange rate at the balance sheet date. Exchange differences arising on this translation are recognized through other comprehensive income in the translation reserve.

Other exchange differences are recognized in the income statement in the period in which they arise except for where items are designated as hedging instruments or where there is a net investment hedge.

Retirement benefit costs

Payments to defined contribution retirement benefit schemes are charged as an expense as they fall due. The Group has no further obligations once the contributions have been paid.

Taxation

Current tax payable is based on taxable profit for the year using tax rates that have been enacted or substantively enacted by the balance sheet date. Taxable profit differs from net profit as reported in the income statement because it excludes certain items of income or expense that are taxable or deductible in other years and further excludes items that are never taxable or deductible. Where the current tax deduction in respect of share option exercises exceeds the share option accounting charge for the period, the excess is recorded in equity rather than the income statement.

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The benefit of UK research and development is recognized under the UK's Research and Development Expenditure Credit ('RDEC') scheme. The benefit is recorded as income included in profit before tax, netted against research and development expenses, as the RDEC is of the nature of a government grant.

Deferred tax is the tax expected to be payable or recoverable on differences between the carrying amount of assets and liabilities in the financial statements and the corresponding tax bases used in the computation of taxable profit and is accounted for using the balance sheet liability method. Deferred tax liabilities are generally recognized for all taxable temporary differences and deferred tax assets are recognized to the extent that it is probable that taxable profits will be available against which deductible temporary differences can be utilized. Such assets and liabilities are not recognized if the temporary difference arises from the initial recognition of goodwill or from the initial recognition of other assets and liabilities in a transaction that affects neither the taxable profit nor the accounting profit.

Deferred tax liabilities are recognized for taxable temporary differences arising on investments in subsidiaries except where the Group is able to control the reversal of the temporary difference and it is probable that the temporary difference will not reverse in the foreseeable future. The Group's liability for deferred tax is calculated using tax rates that have been enacted or substantively enacted by the balance sheet date that are expected to apply in the period when the liability is settled or the asset is realized. Deferred tax is charged or credited in the income statement, except where it relates to items charged or credited directly to other comprehensive income or reserves, in which case the deferred tax is also dealt with in other comprehensive income or reserves respectively.

Deferred tax assets and liabilities are offset when there is a legally enforceable right to set off current tax assets against current tax liabilities, they relate to income taxes levied by the same taxation authority and the Group intends to settle on a net basis.

Business combinations

Business combinations are accounted for using the acquisition method. On the acquisition of a business, fair values are attributed to the identifiable assets, liabilities and contingent liabilities unless the fair value cannot be reliably measured in which case the value is subsumed into goodwill.

If the initial accounting for a business combination is incomplete by the end of the reporting period in which the combination occurs, the Group reports provisional amounts for the items for which the accounting is incomplete. Those provisional amounts are adjusted during the measurement period or additional assets or liabilities are recognized to reflect new information obtained about facts and circumstances that existed as at the acquisition date that, if known, would have affected the amounts recognized as of that date. The measurement period is the period from the date of acquisition to the date the Group obtains complete information about facts and circumstances that existed as of the acquisition date – and is subject to a maximum of one year. Where measurement period adjustments are identified, comparative prior period is revised to reflect the change to the acquisition accounting.

Acquisition-related costs are expensed to the consolidated income statement in the period they are incurred.

Goodwill

Goodwill represents the excess of the fair value of the consideration over the fair value of the net assets acquired. Where the fair value of the consideration is less than the fair value of the acquired net assets, the deficit is recognized immediately in the income statement as a bargain purchase.

Goodwill is not amortized, but is subject to an impairment review at least annually and is carried at cost less accumulated impairment losses. Any impairment is recognized immediately in the income statement and is not subsequently reversed.

For the purpose of impairment testing, goodwill is allocated to cash generating units (CGUs). The CGU to which goodwill has been allocated is tested for impairment annually, or more frequently when there is an indication that the carrying value may not be recoverable.

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Intangible assets

Acquisition intangibles:

Acquisition intangibles comprise licence fees, customer relationships and distribution rights, patents, technology and know-how and trade names. These are capitalized at fair value and amortized on a straight-line basis over their estimated useful lives. The principal expected useful lives are as follows:

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| | |
|:---|:---|
| Licence fees | Term of licence |
| Customer relationships and distribution rights | 4 to 10 years |
| Patents, technology and know-how | 10 to 16 years |
| Trade names | 8 to 11 years |

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Patents, technology and know-how assets are only amortized once the development is complete and being utilized for their intended purpose; until this point the assets are deemed to be in progress.

Other intangibles:

These comprise software and expenditure on capitalized internally developed technology. Internally developed technology costs are recognized as an asset if and only if they meet the recognition criteria set out in IAS 38 'Intangible Assets':

• the project must be technically feasible;

• there must be the intention to complete the project;

• there must be adequate resources to be able to complete the project;

• the ability to use or sell the asset or product is secure;

• the future economic benefits must exceed the costs; and

• the ability to reliably measure costs.

Intangible assets under construction are not amortized.

The principal expected useful lives are as follows:

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| | |
|:---|:---|
| Software | 3 to 10 years |
| Internally developed technology | 3 to 16 years |
| Patents and licences | 2 to 3 years |

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Property, plant and equipment

Property, plant and equipment is stated at cost less accumulated depreciation and, where appropriate, provision for impairment in value. Cost includes the original purchase price of the asset and the costs attributable to bringing the asset to its working condition for its intended use. Depreciation is charged so as to write off the cost of assets over their estimated useful lives, using the straight-line method, as follows:

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| | |
|:---|:---|
| Laboratory equipment | 2 to 5 years |
| Cell Line assets | 10 years |
| Office fixtures, fittings and other equipment | 2 to 5 years |
| Leasehold improvements | Term of lease |

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The gain or loss arising on the disposal or retirement of an asset is determined as the difference between the sales proceeds and the carrying amount of the asset and is recognized in the income statement. Residual values of assets and their useful lives are assessed on an ongoing basis and adjusted, if appropriate, at each balance sheet date. Assets under the course of construction are not depreciated.

Impairment of property, plant and equipment and intangible assets excluding goodwill

A review is undertaken upon the occurrence of events or circumstances which indicate that the carrying amount may not be recoverable. In addition, any assets not yet available for use are tested for impairment annually.

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The recoverable amount is the higher of fair value less costs to sell and value in use. In assessing value in use, the estimated future cash flows are discounted to their present value using a pre-tax discount rate that reflects current market assessments of the time value of money and the risks specific to the asset for which the estimates of future cash flows have not been adjusted. If it is not possible to determine the recoverable amount for an individual asset, the assessment is made for the asset's cash-generating unit (CGU).

Assets held for sale

Non-current assets and disposal groups are classified as held for sale only if available for immediate sale in their present condition and a sale is highly probable and expected to be completed within one year from the date of classification. Such assets are measured at the lower of carrying amount and fair value, less the cost of disposal, and are not depreciated or amortised.

Inventories

Inventories and work in progress are stated at the lower of cost and net realizable value. Cost comprises direct materials and, where applicable, direct labour costs and an attributable portion of production overheads that have been incurred in bringing the inventories to their present location and condition. The valuation methodology is on a weighted average cost basis, depending on the nature of the inventory, and net realizable value represents the estimated selling price less all estimated costs of completion and costs to be incurred in marketing, selling and distribution. Provision is made for obsolete, slow-moving or defective items where appropriate.

Financial assets

Financial assets and financial liabilities are recognized on the Group's balance sheet when the Group becomes a party to the contractual provisions of the instrument. The Group's financial assets comprise cash and cash equivalents, receivables which involve a contractual right to receive cash from external parties, and investments.

Investments

Investments in shares are held at fair market value, with any revaluation gain or loss recorded through other comprehensive income.

Trade and other receivables

Trade receivables (excluding derivative financial assets) are recognized at cost less allowances for expected credit loss. The provision is based on the Group's expected credit loss, which is calculated using the simplified approach for trade receivables based on historical data adjusted for forward looking information.

Cash and cash equivalents

Cash and cash equivalents comprise cash on hand and demand deposits and other short-term, highly liquid investments that are readily convertible to a known amount of cash and are subject to an insignificant risk of changes in value.

Financial liabilities

Financial liabilities are those which involve a contractual obligation to deliver cash to external parties at a future date.

Trade and other payables

Trade payables (excluding derivative financial liabilities) are non-interest bearing and are stated at cost which equates to their fair value.

Equity instruments

Equity instruments issued by the Group are recorded as the proceeds received, net of direct issue costs.

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Derivative financial instruments

The Group uses forward contracts to manage the exposure to fluctuating foreign exchange rates in relation to forecast future transactions.

Derivatives are initially recognized at fair value at the date a contract is entered into and are subsequently remeasured to their fair value at each balance sheet date. The resulting gain or loss is recognized in the income statement immediately unless the derivative is designated and effective as a hedging instrument, in which event the timing of the recognition in the income statement depends on the nature of the hedge relationship.

Hedge accounting

At the inception of a hedge relationship, the Group documents the relationship between the hedging instrument and the hedged item, its effectiveness along with its risk management objectives, and its strategy for undertaking various hedge transactions. The effectiveness is repeated on an ongoing basis during the life of the instrument to ensure that the instrument remains effective.

Hedge effectiveness is assessed via the dollar offset method, being the ratio of change in the cumulative fair value of the hedging instrument divided by the cumulative change in present value of the hedged item attributed to changes in the stated currency pair forward rate.

Cash flow hedges

The Group designates certain derivatives as cash flow hedges of highly probable forecast foreign currency transactions.

The effective portion of changes in the fair value of derivatives which are designated and qualify as cash flow hedges is deferred in other comprehensive income. Gains or losses relating to the ineffective portion are recognized immediately in the income statement.

Amounts deferred in other comprehensive income are recycled to the income statement in the periods when the hedged item is recognized in the income statement.

Hedge accounting is discontinued when the Group revokes the hedging relationship, the hedging instrument expires or is sold, terminated or exercised, or it no longer qualifies for hedge accounting. Any cumulative gain or loss in other comprehensive income at that time remains in other comprehensive income and is recognized when the forecast transaction is ultimately recognized in the income statement. When a forecast transaction is no longer expected to occur, the cumulative gain or loss in other comprehensive income is recognized immediately in the income statement.

Share-based payments

Equity settled share-based payments (SBPs) are measured at fair value (excluding the effect of non-market-based vesting conditions) at the date of grant and is expensed on a straight-line basis over the vesting period, based on the Group's estimate of the number of shares that will eventually vest.

Share-based payments where vesting is by reference to external performance criteria (such as growth in an external index) are measured using the Monte Carlo simulation. Those which are subject only to internal performance criteria or service conditions are measured using the Black-Scholes model.

For all schemes, the number of options expected to vest is recalculated at each balance sheet date based on expectations of leavers prior to vesting. The number of options expected to vest for schemes with internal performance criteria is also adjusted based on expectations of performance against targets. No adjustments are made for expected performance against external or 'market-based' targets. Charges made to the income statement in respect of equity settled share-based payments are credited to equity.

For cash settled share-based payments, the Group recognizes a liability for the services acquired, measured initially at the fair value of the liability. This liability is remeasured at each balance sheet date and at the date of settlement, with any changes in fair value recognized in the income statement.

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Own shares

No gain or loss is recognized in the income statement on the purchase, sale, issue or cancellation of the Group's own shares. Any difference between the carrying amount and the consideration is recognized in equity.

4. Critical accounting judgements and sources of estimation uncertainty

The preparation of financial statements requires management to make judgements, estimates and assumptions about the application of its accounting policies which affect the reported amounts of assets, liabilities, revenue and expenses. Actual amounts and results may differ from those estimates.

Judgements and estimates are evaluated regularly and are based on historical experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances. Any revisions to accounting estimates are recognized in the period in which the estimate is revised.

a) Key accounting judgements

Capitalization of intangible assets—internal software development

The Group capitalizes internal software development costs, in particular internal staff costs, relating to the enhancement of the Group's core IT systems architecture and developments. Judgement is required in applying the capitalization criteria of IAS 38 'Intangible Assets', differentiating between enhancements and maintenance. Those costs which are not treated as capital but are directly attributable to the Group's system and process improvement project are treated as adjusting items.

In establishing the principles on which costs are capitalized, consideration is given to the nature of work being performed, whether the costs and the activities are incremental and whether the associated deliverables meet the characteristics of an asset. Processes are in place to evaluate this, and the same processes are used to confirm whether the expensed costs are related to the system and process improvement project so that classification as an adjusting item is appropriate.

Capitalization of intangible assets—internally developed technology

The Group capitalizes internal costs associated with internally developed technology as intangible assets as described further in notes 3 and 13. This requires judgement to determine that the characteristics of such assets meet the relevant criteria if IAS 38 'Intangible Assets' for classification as an intangible asset.

Internal costs are capitalized as internally developed technology within intangible assets which are used to generate antibodies and kits. The point at which such internal costs are capitalized as well as their magnitude (whereby the amount capitalized comprises mainly of attributable salary costs and consumables used in the manufacture process) is a key area of judgement. A key area in respect of the stage of development of internally developed technology is subject to judgement as to when a product's future economic value justifies capitalization. Management reviews regularly these factors in order to determine that the costs meet the criteria for capitalization as intangible assets.

During the prior year, an impairment was booked for assets relating to AxioMx where changes in scope of the project impacted on the usability of the historical work performed, details of which can be seen in note 13.

Assessment of cash generating units (CGUs)

For the purposes of impairment testing, the Group identifies the CGU that is appropriate for the asset to be measured against if it is not possible to estimate the recoverable amount individually. The goodwill acquired in a business combination is allocated at acquisition to the CGU which is expected to benefit from that business combination.

The Group applies judgement in determining how integrated the acquired business is within the Group. Consideration is given to the product branding and ranges, whether the manufacturing and research and development has broadened since acquisition, whether sales and marketing activity is separate from the Group and how the business is monitored.

For the BioVision acquisition in October 2021, the Group had determined that the business was not sufficiently integrated into the Group at 31 December 2021 and therefore the goodwill associated with this

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acquisition was tested separately as part of a separate BioVision CGU. As at 31 December 2022, the acquired BioVision business had been fully integrated in to the Group's operations and product portfolio and so the Goodwill arising from the BioVision acquisition has also been allocated to the Group CGU. Full details can be found in note 12.

b) Key sources of estimation uncertainty

Performance conditions associated with share-based payment schemes

The Group operates a number of share-based payment schemes for its employees, many of which need to meet non-market-based performance conditions in order to either partially or fully vest at the end of the vesting period. Management uses forecast financial information, such as expected revenue growth, to assess the likelihood of achieving performance conditions throughout the vesting period and adjusts the share-based payment charge to reflect the expected proportion of issued share awards that will vest. Where actual performance differs from management expectations during the vesting period, or there are changes to management's estimates, this can result in a material change to the share-based payment charge in the period in which this change occurs.

Impairment assessment of assets held for sale and acquired intangible assets

During the year ended 31 December 2022, the assets relating to Firefly BioWorks multiplex and assay technology were actively marketed, along with other assets relating to this technology and product range, which included an allocation of goodwill (£1.6m). Accordingly, these assets were classified as held for sale on the Group's balance sheet during the year.

The group was not successful in locating a buyer and a decision was made by the directors to discontinue the group's investment in these products and technology. As such an impairment charge of £18.3m has been recognised within R&D expenses within the income statement, with the carrying amount of the assets classified as held for sale written down to £nil. Further, associated deferred tax liabilities of £4.1m and other liabilities of £0.2m were also released to the income statement, as well as other costs associated with this decision of £0.2m . Details can be found in note 8.

During the year to 30 June 2020, an assessment of the acquired intangible in respect of In Vitro monoclonal antibody production technology acquired with AxioMx, Inc. in 2015 was undertaken. This also included further smaller amounts in respect of this technology which have been capitalized since acquisition as certain commercial feasibility milestones had been achieved.

An appraisal of the ability to utilize at scale this technology has been undertaken whereby although technical feasibility remains valid, the challenges to realize material commercial returns have resulted in the conclusion not to pursue further active development and substantive utilization of this technology. As a result of this, the intangible asset in respect of this technology has been fully impaired.

Details of the impairment can be found in note 13.

Provision for expected credit losses

During the financial year a new ERP system module for sales and distribution was implemented which, in September 2022, interrupted operations and resulted in delays in Abcam's ability to perform credit checks and distribute invoices timely, in particular in Abcam Inc. Amounts collected may be less than amounts billed due to untimely invoice distribution, prolonged delays in collection and other reasons unrelated to credit risk. These factors make the valuation of accounts receivable more subjective.

Abcam assesses the requirement for a provision against bad or doubtful debts in line with the lifetime expected credit loss ('ECL') for the trade receivables. The ECL is based upon the Group's historical credit loss experience that is then adjusted to account for factors that are specific to the individual customer balances, the general economic conditions and the forecast conditions at the balance sheet date. The evaluation of these historical and other factors involves complex, subjective judgments.

The valuation of trade receivables is adjusted for the expected credit loss in the form of a provision for bad and doubtful debts. Our collection procedures include: review of account aging; review of current sales activity;

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and direct contact with our payors. An uncollectible amount is written off to the provision after reasonable collection efforts have been exhausted. As of December 31, 2022, the provision for bad and doubtful accounts balance was £2.4 million (31 December 2021: £0.8 million) which is included in accounts receivable, net of allowances on the Group's Consolidated Balance Sheets and of which there is a provision of $2.2 million (£1.8 million) against a gross accounts receivable balance of $54.8 million (£46.0 million) within Abcam Inc.

Details on the ageing of trade receivables can be found in note 19.

5. Operating segments

Products and services from which reportable segments derive their revenues

The Directors consider that there is only one core business activity and there are no separately identifiable business segments which are engaged in providing individual products or services or a group of related products and services which are subject to separate risks and returns. The information reported to the Group's Chief Executive Officer, who is considered the chief operating decision maker, for the purposes of resource allocation and assessment of performance is based wholly on the overall activities of the Group. The Group has therefore determined that it has only one reportable segment, which is 'sales of antibodies and related products'. The Group's revenue and assets for this one reportable segment can be determined by reference to the Group's income statement and balance sheet.

The Group has no individual product or customer which contributes more than 10% of its revenues.

Geographical information

Revenues are attributed to regions based primarily on customers' location. The Group's revenue from external customers and information about its non-current segment assets (excluding deferred tax) is set out below:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Revenue | Revenue | Revenue | Revenue |
|  | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
| The Americas | 162.5 | 130.4 | 58.6 | 112.4 |
| EMEA | 90.1 | 84.3 | 40.2 | 69.3 |
| China | 62.9 | 58.2 | 27.4 | 39.5 |
| Japan | 17.9 | 18.7 | 9.9 | 18.8 |
| Rest of Asia Pacific | 28.3 | 23.8 | 11.4 | 20.0 |
|  | 361.7 | 315.4 | 147.5 | 260.0 |

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| | | |
|:---|:---|:---|
|  | Non-current assets | Non-current assets |
|  | As at<br>31 December<br>2022<br>£m | As at<br>31 December<br>2021<br>£m |
| The Americas | 483.7 | 464.3 |
| EMEA | 237.0 | 231.8 |
| China | 8.0 | 8.6 |
| Japan | 0.4 | 0.2 |
| Rest of Asia Pacific | 60.0 | 59.3 |
|  | 789.1 | 764.2 |

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Revenue by type is shown below:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
| Catalogue revenue | 339.8 | 296.4 | 139.0 | 243.1 |
| Custom products and services | 6.8 | 5.7 | 2.7 | 6.3 |
| IVD | 6.1 | 6.3 | 2.6 | 4.7 |
| Royalties and licenses | 9.0 | 7.0 | 3.2 | 5.9 |
| Custom products and licensing | 21.9 | 19.0 | 8.5 | 16.9 |
| Total reported revenue | 361.7 | 315.4 | 147.5 | 260.0 |

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Because all custom products and services projects within a contract had an original expected duration of one year or less, the Group has taken advantage of the exemption not to disclose outstanding amounts in respect of uncompleted contracts.

6. Operating (loss) / profit

Operating (loss) / profit for the year / period is stated after charging / (crediting):

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
|  Cost of inventories recognized as an expense | 60.6 | 63.5 | 30.7 | 56.2 |
|  Write down of inventories recognized as an expense | 3.6 | 3.8 | 1.6 | 2.8 |
|  UK R&D tax credits | (2.0) | (2.5) | (0.7) | (1.5) |
|  Movements arising on financial instruments at fair value through profit or loss | 0.2 |  | (0.4) |  |
|  Other net foreign exchange differences (including cash flow hedge movements reclassified from other comprehensive income) | 0.1 | (0.8) | 1.6 | (0.6) |

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Auditor's remuneration comprised the following:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022<br> £000 | Year<br> ended<br> 31 December<br> 2021<br> £000 | Six months<br> ended<br> 31 December<br> 2020<br> £000 | Year<br> ended<br> 30 June<br> 2020<br> £000 |
|  Audit services |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; —Group and parent company | 805 | 646 | 426 | 279 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; —Subsidiary companies pursuant to legislation | 12 | 12 |  | 8 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; —Assurance services in respect of controls work for US compliance |  |  |  | 200 |
|  Total audit fees | 817 | 658 | 426 | 487 |
|  Audit related assurance services |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; —Interim review | 69 | 87 | 63 | 22 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; —Attestation under s404 of Sarbanes-Oxley Act 2002 and audit of 20-F filing | 568 | 535 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; —Services in respect of the Group's US listing |  |  | 653 | 76 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; —Other | 30 | 35 |  |  |
|  Total assurance-related fees | 667 | 657 | 716 | 98 |
|  Other services |  | 6 |  | 1 |
|  Total auditor remuneration | 1484 | 1321 | 1142 | 586 |

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Fees in respect of controls work for US compliance relate to additional controls work required to comply with the US Public Company Accounting Oversight Board (PCAOB).

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Audit related assurance services in respect of the Group's secondary listing in the US, which was completed in October 2020, relate to work on documents required for the US Securities and Exchange Commission (SEC). This includes the Attestation of the Group's internal control framework under s404 of the Sarbanes-Oxley Act 2002 and other related services.

7. Employees

The average monthly number of employees (including Executive Directors) was:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br>ended<br> 31 December<br> 2022<br> Number | Year<br> ended<br> 31 December<br> 2021<br> Number | Six months<br> ended<br> 31 December<br> 2020<br> Number | Year<br> ended<br> 30 June<br> 2020<br> Number |
|  Management, administrative, marketing and distribution | 1304 | 1191 | 930 | 879 |
|  Laboratory | 425 | 428 | 594 | 575 |
|  | 1729 | 1619 | 1524 | 1454 |

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During the year ended 31 December 2021, the Group changed the allocation of certain departmental headcount to particular cost centres, which had the effect of reducing the average number of laboratory staff and increasing the average number of management, administrative, marketing and distribution staff. This was in order to more accurately reflect the nature of operations being undertaken by those particular departments. Contractors are not included in the analysis of employee numbers.

Their aggregate remuneration comprised:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
|  Wages and salaries | 103.6 | 89.4 | 42.6 | 69.5 |
|  Social security costs | 15.1 | 12.4 | 6.3 | 7.1 |
|  Other pension costs | 7.2 | 6.5 | 2.8 | 4.5 |
|  Share-based payments charge | 23.3 | 17.9 | 7.3 | 9.3 |
|  Total staff costs | 149.2 | 126.2 | 59.0 | 90.4 |

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8. Impairment of asset held for sale

Assets classified as held for sale and subsequently impaired:

---

| | |
|:---|:---|
|  | Impairment of<br> assets held for<br> sale<br> £m |
|  Impaired assets held for sale |  |
|  Goodwill | 1.6 |
|  Intangible assets | 15.8 |
|  Property, plant and equipment | 0.5 |
|  Inventories | 0.4 |
|  Assets previously classified as held for sale | 18.3 |
|  Trade and other payables | (0.2) |
|  Deferred tax liabilities | (4.1) |
|  Liabilities previously associated with assets held for sale | (4.3) |
|  Impairment charges impacting operating profit | 18.3 |
|  Release of other liabilities | (0.2) |
|  Other costs associated with discontinued investment | 0.2 |
|  Expenses recognised within operating profit | 18.3 |
|  Release of deferred tax liabilities | (4.1) |
|  Loss recognised within the income statement | 14.2 |

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During the year ended 31 December 2022, the assets relating to Firefly BioWorks multiplex and assay technology were actively marketed, along with other assets relating to this technology and product range, which included an allocation of goodwill (£1.6m). The criteria for classification as an Asset Held for Sale under IFRS 5 was met in May 2022, when active marketing of these assets had commenced, and these assets were classified as held for sale on the group's balance sheet.

The group was not successful in locating a buyer and a decision was made by the directors, in the second half of 2022, to discontinue the group's investment in these products and technology. As such an impairment charge of £18.3 m has been recognised within R&D expenses within the income statement, with the carrying amount of the assets classified as held for sale written down to £nil. Further, associated deferred tax liabilities of £4.1m and other liabilities of £0.2m were also released to the income statement, as well as other costs associated with this decision of £0.2m.

9. Finance income and costs

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
|  Interest receivable | 0.4 | 0.3 | 0.2 | 0.7 |
|  Finance income | 0.4 | 0.3 | 0.2 | 0.7 |
|  Interest expense on lease liabilities | (2.1) | (1.7) | (1.0) | (1.5) |
|  Borrowing costs | (3.3) | (1.0) | (0.9) | (1.4) |
|  Other interest (expense) / income | (0.5) |  |  | 0.1 |
|  Finance costs | (5.9) | (2.7) | (1.9) | (2.8) |
|  Net finance costs | (5.5) | (2.4) | (1.7) | (2.1) |

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10. Tax

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | Note | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
|  Current tax |  |  |  |  |  |
|  Current income tax charge |  | 11.2 | 11.0 | 4.1 | 4.8 |
|  Adjustment in respect of prior years |  | (5.4) | (2.4) |  | (0.9) |
|  |  | 5.8 | 8.6 | 4.1 | 3.9 |
|  Deferred tax |  |  |  |  |  |
|  Origination and reversal of temporary differences |  | (15.4**)** | (11.6) | (1.3) | (9.2) |
|  Adjustment in respect of prior years |  | 5.4 | 1.9 |  | 0.9 |
|  Effect of tax rate change |  | (2.9) | 1.4 |  | 0.2 |
|  | 17 | (12.9**)** | (8.3) | (1.3) | (8.1) |
|  Total income tax (credit) / charge |  | (7.1**)** | 0.3 | 2.8 | (4.2) |

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The Group reported a net tax credit of £7.1m (year ended 31 December 2021: charge of £0.3m; six months ended 31 December 2020: charge of £2.8m; year ended 30 June 2020: credit of £4.2m). The net tax charge is reduced due to the credit from the 'patent box' benefit in the UK, where a lower rate of tax is applied to profits on patented income.

The UK Corporation Tax rate for the year was 19.0% (year ended 31 December 2021: 19%; six months ended 31 December 2020: 19.0%; year ended 30 June 2020: 19.0%). Taxation for other jurisdictions is calculated at the rates prevailing in the respective jurisdictions.

The Finance Act 2021 increased the UK Corporation Tax rate to 25% with effect from 1 April 2023. This 25% rate has been applied in the deferred tax valuations based on the expected timing of when such assets and liabilities will be recovered.

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The (credit)/charge for the year / period can be reconciled to the (loss)/profit per the income statement as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
| (Loss) / profit before tax | (15.6**)** | 4.7 | 15.6 | 8.3 |
|  Tax at the UK corporation tax rate of 19.0% (December 2021: 19.0%; December 2020: 19.0%; June 2020: 19.0%) | (3.0**)** | 0.9 | 3.0 | 1.6 |
|  Adjustment in respect of overseas tax rates | 2.3 | 2.0 | 0.2 | (1.3) |
|  Adjustments in respect of prior years |  | (0.5) |  |  |
|  Effect of 'patent box' benefit | (2.8**)** | (4.2) | 0.9 | (6.0) |
|  Tax effect of non-deductible expenses and non-taxable income | 0.1 | 0.9 | (1.5) | 1.3 |
|  Overseas R&D tax credit uplift | (0.8**)** | (0.7) | 0.3 | (0.5) |
|  Overseas withholding tax |  | 0.5 | (0.1) | 0.5 |
| Effect of tax rate change | (2.9**)** | 1.4 |  | 0.2 |
|  Tax (credit) / charge for the year / period | (7.1**)** | 0.3 | 2.8 | (4.2) |

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11. Earnings per share

The calculations of earnings per ordinary share (EPS) are based on profit after tax and the weighted number of shares in issue during the year / period.

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
|  Earnings |  |  |  |  |
| (Loss) / profit for the year / period | (8.5**)** | 4.4 | 12.8 | 12.5 |
|  | Million | Million | Million | Million |
|  Number of shares |  |  |  |  |
|  Weighted average number of ordinary shares in issue | 229.0 | 227.1 | 220.0 | 208.0 |
|  Less ordinary shares held by Equiniti Share Plan Trustees Limited | (0.3) | (0.4) | (0.4) | (0.4) |
|  Weighted average number of ordinary shares for the purposes of basic EPS | 228.7 | 226.7 | 219.6 | 207.6 |
|  Effect of potentially dilutive ordinary shares—share options and awards | 2.6 | 2.2 | 2.4 | 2.0 |
|  Weighted average number of ordinary shares for the purposes of diluted EPS | 231.3 | 228.9 | 222.0 | 209.6 |

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Basic EPS is calculated by dividing the profit after tax by the weighted average number of shares outstanding during the year / period. Diluted EPS is calculated on the same basis as basic EPS but with a further adjustment to the weighted average number of shares outstanding to assume conversion of all potentially dilutive ordinary shares. Such potentially dilutive ordinary shares comprise share options and awards granted to employees where the exercise price is less than the average market price of the Company's ordinary shares during the year / period and any unvested shares which have met, or are expected to meet, the performance conditions at the end of the year / period.

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| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022 | Year<br> ended<br> 31 December<br> 2022 |  | Year<br> ended<br> 31 December<br> 2021 | Year<br> ended<br> 31 December<br> 2021 | Six months<br> ended<br> 31 December<br> 2020 | Six months<br> ended<br> 31 December<br> 2020 | Year<br> ended<br> 30 June<br> 2020 | Year<br> ended<br> 30 June<br> 2020 |
|  Basic EPS |  | (3.7 |)p |  | 1.9p |  | 5.8p |  | 6.0p |
|  Diluted EPS |  | (3.7 |)p |  | 1.9p |  | 5.8p |  | 6.0p |

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12. Goodwill

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| | | | |
|:---|:---|:---|:---|
|  | Note | **31 December**<br>**2022**<br>**£m** | 31 December<br>2021\*<br>£m |
| **Cost and carrying amount** |  |  |  |
| At beginning of the year / period |  | 363.5 | 184.3 |
| Additions | 29 |  | 177.0 |
| Measurement period adjustments | 29 |  | (1.3) |
| Transfer to asset held for sale | 8 | (1.6) |  |
| Exchange differences |  | 36.4 | 3.5 |
| At end of the year / period |  | 398.3 | 363.5 |
| Allocated to BioVision CGU |  |  | 179.7 |
| Allocated to Group CGU |  | 398.3 | 183.8 |
| At end of the year / period |  | 398.3 | 363.5 |

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\* See note 29 for details related to the measurement period adjustment to the accounting for the acquisition of BioVision

Goodwill is converted at the exchange rate on the date of acquisition and retranslated at the balance sheet date.

Goodwill acquired in a business combination is allocated at acquisition to the Cash Generating Unit (CGU) which is expected to benefit from that business combination. Following the acquisition of BioVision (as described in note 29), the acquired business had not been fully integrated into the Group's operations as at 31 December 2021. As such, as at 31 December 2021 BioVision was considered a separate CGU, and goodwill arising from this acquisition has been allocated to a separate CGU and the remainder of the Group was considered to be one CGU, as previous acquisitions have been fully integrated into the Group's operations and product portfolio. As at 31 December 2022, the acquired BioVision business had been fully integrated in to the Group's operations and product portfolio and so the Goodwill arising from the BioVision acquisition has also been allocated to the Group CGU.

During the year ended 31 December 2022, the assets relating to Firefly BioWorks multiplex and assay technology were actively marketed, along with other assets relating to this technology and product range. Accordingly these assets were classified as Assets held for sale, which included an allocation from goodwill of £1.6m. The goodwill was allocated on the basis of the relative values of the operation disposed of and the portion of the cash-generating unit retained. This was determined with reference to the proportion of revenue related to these assets in comparison to the total revenue for the group, as recognised in the first half of 2022 which was when these assets were classified as an asset held for sale.

Goodwill is subject to an annual impairment review or more frequently if there are any indications that goodwill might be impaired. The review assesses the carrying amount of the group's CGU, which is equivalent to the net assets of the group, in comparison to its recoverable amount. In the event that the CGU were impaired, the impairment loss would be allocated against the recorded goodwill first before any other assets within the CGU.

The reviews are carried out using the following criteria:

• The recoverable amount of the CGU is determined by fair value less costs to sell;

• The fair value less costs to sell is determined with reference to the market capitalization of the Abcam plc group as at 31 December 2022;

• Costs to sell are deemed to be negligible in comparison to the overall recoverable amount.

The key assumptions considered most sensitive for the fair value calculations are:

• Movements in the share price and exchange rate

Based on the results of this analysis, management is satisfied that the recoverable amount of the group's CGU, inclusive of the recorded goodwill, exceeds its carrying amount.

Management has performed a sensitivity analysis on each of the key assumptions mentioned above. Due to the significant headroom which exists between the recoverable amount and the carrying value, the Directors have

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concluded that there are no reasonable possible changes in any of these key assumptions which would cause the goodwill to exceed its recoverable amount.

13. Intangible assets

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| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | Acquisition intangibles | Acquisition intangibles | Acquisition intangibles | Acquisition intangibles | Acquisition intangibles | | | | |
|  | Customer<br> relationships<br> and<br> distribution<br> rights<br>£m | Patents,<br> technology<br> and know-<br> how<br>£m | License<br> fees<br>£m | Trade<br> names<br>£m | Sub-total<br>£m | Software<br> £m | Internally<br> developed<br> technology<br>£m | Patents and<br> licenses<br>£m | Total<br> £m |
| Cost |  |  |  |  |  |  |  |  |  |
| At 1 January 2021 | 8.4 | 111.2 | 15.7 | 3.5 | 138.8 | 71.4 | 41.1 | 0.7 | 252 |
| Additions |  |  |  |  |  | 17.4 | 7.5 | 0.9 | 25.8 |
| Acquisition | 3.7 | 77.5 |  |  | 81.2 |  |  |  | 81.2 |
| Exchange differences | 0.1 | 0.5 | 0.1 | 0.1 | 0.8 |  | 0.1 |  | 0.9 |
| At 31 December 2021 | 12.2 | 189.2 | 15.8 | 3.6 | 220.8 | 88.8 | 48.7 | 1.6 | 359.9 |
| Additions |  |  |  |  |  | 14.6 | 8.5 | 0.4 | 23.5 |
| Acquisition |  |  |  |  |  |  |  |  |  |
| Transfer to asset held for sale |  | (21.6) |  |  | (21.6) | (0.8) | (5.2) |  | (27.6) |
| Exchange differences | 1 | 18.5 | 0.6 | 0.3 | 20.4 | 0.2 | 0.5 |  | 21.1 |
| At 31 December 2022 | 13.2 | 186.1 | 16.4 | 3.9 | 219.6 | 102.8 | 52.5 | 2 | 376.9 |
| Accumulated amortization |  |  |  |  |  |  |  |  |  |
| At 1 January 2021 | 6.1 | 43.7 | 7.7 | 2.4 | 59.9 | 26.5 | 13.8 |  | 100.2 |
| Charge for the year | 1 | 6.9 | 1.1 | 0.1 | 9.1 | 8.9 | 2.4 | 0.5 | 20.9 |
| Impairment |  |  |  |  |  | 2.1 | 1.7 |  | 3.8 |
| Exchange differences | (0.1) | 0.3 | 0.1 | 0.1 | 0.4 | 0.1 | 0.3 |  | 0.8 |
| At 31 December 2021 | 7 | 50.9 | 8.9 | 2.6 | 69.4 | 37.6 | 18.2 | 0.5 | 125.7 |
| Charge for the year | 1 | 14.5 | 1.3 | 0.1 | 16.9 | 6.1 | 3 | 0.4 | 26.4 |
| Impairment |  |  |  |  |  | 0.7 | 0.3 |  | 1 |
| Transfer to asset held for sale |  | (9.4) |  |  | (9.4) | (0.1) | (2.3) |  | (11.8) |
| Exchange differences | 0.6 | 5.7 | 0.6 | 0.3 | 7.2 | 0.1 | 0.4 |  | 7.7 |
| At 31 December 2022 | 8.6 | 61.7 | 10.8 | 3 | 84.1 | 44.4 | 19.6 | 0.9 | 149 |
| Carrying amount |  |  |  |  |  |  |  |  |  |
| At 31 December 2021 | 5.2 | 138.3 | 6.9 | 1 | 151.4 | 51.2 | 30.5 | 1.1 | 234.2 |
| At 31 December 2022 | 4.6 | 124.4 | 5.6 | 0.9 | 135.5 | 58.4 | 32.9 | 1.1 | 227.9 |
| Included in carrying amount—Assets under construction |  |  |  |  |  |  |  |  |  |
| At 31 December 2021 |  |  |  |  |  | 18.6 | 4.3 | 1.1 | 24 |
| At 31 December 2022 |  |  |  |  |  | 14.7 | 8.4 | 1 | 24.1 |

---

Amortization of £12.0m (year ended 31 December 2021: £8.5m; six months ended 31 December 2020: £4.6m; year ended 30 June 2020: £8.2m) is included within Research and development expenses and £14.4m (year ended 31 December 2021: £12.4m; six months ended 31 December 2020: £3.3m; year ended 30 June 2020: £7.5m) is included within selling, general and administrative expenses.

During the year ended 31 December 2022, the assets relating to Firefly BioWorks multiplex and assay technology were actively marketed for sale, along with other assets relating to this technology and product range. These assets which included acquired patents, technology and know-how, software, and internally developed technology with a total carrying amount of £15.8m were classified as assets held for sale in May 2022.

During the year ended 31 December 2022, a £0.7m impairment charge was recognized in respect of capitalized software development that will no longer be used in the Group's ERP implementation project (year ended 31 December 2021: £2.1m impairment charge). These impairment charges are included within selling, general and administrative expenses.

------

A further £0.3m impairment charge on internally developed technology was recorded in the year ended 31 December 2022 (£0.6m in the year ended 31 December 2021), relating to certain technology assets. The impairment charge is included within selling, general and administrative expenses.

During the year ended 31 December 2021, an impairment was made of internally developed technology assets relating to the AxioMx business unit, following an assessment of the work performed and costs capitalized to date. Following the review, it was concluded that as a result of changes in the scope and nature of the project to which the costs related, and the corresponding usability of historical work performed, £1.1m of internally developed technology assets were impaired. The impairment charge is included within research and development expenses and is included in exceptional items.

Capital commitments at 31 December 2022 amounted to £2.3m (31 December 2021: £5.4m).

Individually material intangible assets

---

| | | |
|:---|:---|:---|
|  | Carrying<br> amount<br>£m | Remaining<br> amortization<br> Years |
| Expedeon CaptSure technology | 21.7 | 13 |
| Expedeon antibody labelling and conjugation technology | 14.6 | 13 |
| Epitomics RabMAb<sup>®</sup> technology | 8.1 | 4 |
| Roche licence agreement | 5.3 | 6 |
| BioVision Metabolism Assays & Proteins | 77.9 | 9 |
| ERP System | 26.4 | 9 |

---

Assets included within software under construction amounting to £14.7m relate to the Group's new website platform.

------

14. Property, plant and equipment

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | Laboratory<br>equipment<br>£m | Office fixtures,<br>fittings and<br>other<br>equipment<br>£m | Cell line<br>assets<br>£m | Leasehold<br>improvements<br>£m | Total<br>£m |
|  **Cost** |  |  |  |  |  |
| At 1 January 2021 | 29.8 | 15 | 6.2 | 27.7 | 78.7 |
| Additions | 5.9 | 5.3 | 2.3 | 21 | 34.5 |
| Acquisitions | 0.8 |  |  |  | 0.8 |
| Disposals | (1.1) | (2.0) |  |  | (3.1) |
| Exchange differences | 0.7 | 0.2 |  | 0.5 | 1.4 |
| At 31 December 2021 | 36.1 | 18.5 | 8.5 | 49.2 | 112.3 |
| Additions | 8 | 1.4 | 1.9 | 6.9 | 18.2 |
| Transfer to asset held for sale | (1.3) |  |  |  | (1.3) |
| Disposals | (0.2) | (0.1) |  |  | (0.3) |
| Transfers | 0.3 | (0.3) |  |  |  |
| Exchange differences | 2.3 | 1.3 |  | 3.3 | 6.9 |
| At 31 December 2022 | 45.2 | 20.8 | 10.4 | 59.4 | 135.8 |
| Accumulated depreciation |  |  |  |  |  |
| At 1 January 2021 | 17.3 | 10.1 | 0.6 | 2.2 | 30.2 |
| Charge for the year | 4.3 | 2.8 | 0.6 | 3.3 | 11 |
| Disposals in the year | (1.1) | (1.5) |  |  | (2.6) |
| Exchange differences | 0.3 | 0.1 |  | (0.2) | 0.2 |
| At 31 December 2021 | 20.8 | 11.5 | 1.2 | 5.3 | 38.8 |
| Charge for the year | 6.2 | 2.4 | 1.2 | 5.2 | 15 |
| Transfer to asset held for sale | (0.8) |  |  |  | (0.8) |
| Disposals in the year | (0.2) | (0.1) |  |  | (0.3) |
| Transfers | 0.3 | (0.3) |  |  |  |
| Exchange differences | 1.5 | 1 |  | 0.1 | 2.6 |
| At 31 December 2022 | 27.8 | 14.5 | 2.4 | 10.6 | 55.3 |
| Net book value |  |  |  |  |  |
| At 31 December 2021 | 15.3 | 7 | 7.3 | 43.9 | 73.5 |
| At 31 December 2022 | 17.4 | 6.3 | 8 | 48.8 | 80.5 |
| Included in net book value—Assets under construction |  |  |  |  |  |
| At 31 December 2021 |  |  | 2.3 | 0.9 | 3.2 |
| At 31 December 2022 |  |  | 0.8 | 7.1 | 7.9 |

---

Capital commitments at 31 December 2022 amounted to £20.7m (31 December 2021: £4.0m).

During the year ended 31 December 2022, the assets relating to Firefly BioWorks multiplex and assay technology were actively marketed, along with other assets relating to this technology and product range. These assets, including laboratory equipment with a total carrying amount of £0.5m, were classified as assets held for sale in May 2022.

------

15. Leases

Right-of-use assets

---

| | | | |
|:---|:---|:---|:---|
|  | Land and<br>buildings<br>£m | Other<br>£m | Total<br>£m |
| Cost |  |  |  |
| At 1 January 2021 | 118.7 | 0.2 | 118.9 |
| Additions | 4.0 | 0.1 | 4.1 |
| Leasehold incentives received | (12.1) |  | (12.1) |
| Disposals and other adjustments | (4.0) |  | (4.0) |
| Exchange differences | 0.5 |  | 0.5 |
| At 31 December 2021 | 107.1 | 0.3 | 107.4 |
| Additions | 1.1 | 0.1 | 1.2 |
| Disposals and other adjustments | (2.9) |  | (2.9) |
| Exchange differences | 5.4 |  | 5.4 |
| At 31 December 2022 | 110.7 | 0.4 | 111.1 |
| Accumulated depreciation |  |  |  |
| At 1 January 2021 | 10.0 | 0.1 | 10.1 |
| Charge for the period | 9.0 | 0.1 | 9.1 |
| Exchange differences |  |  |  |
| At 31 December 2021 | 19.0 | 0.2 | 19.2 |
| Charge for the period | 11.4 | 0.1 | 11.5 |
| Exchange differences | 1.2 |  | 1.2 |
| At 31 December 2022 | 31.6 | 0.3 | 31.9 |
| Carrying Value |  |  |  |
| At 31 December 2021 | 88.1 | 0.1 | 88.2 |
| At 31 December 2022 | 79.1 | 0.1 | 79.2 |

---

Lease liabilities

Maturity analysis of lease liabilities:

---

| | | |
|:---|:---|:---|
|  | 31 December 2022<br>£m | 31 December 2021<br>£m |
| Amounts falling due within |  |  |
| One year | 8.5 | 9.2 |
| Between one and five years | 33.2 | 33.9 |
| Later than five years | 62.6 | 67.4 |

---

The interest expense incurred on lease liabilities included within finance costs was £2.1m (year ended 31 December 2021: £1.7m) and income recognized from subleases was £nil (year ended 31 December 2021: £0.4m). The lease expense relating to short term leases and low value assets (that are not shown in the tables above) was £0.2m (year ended 31 December 2021: £0.2m). Cash outflows in respect of lease liabilities were £13.4m (year ended 31 December 2021: £10.3m).

16. Investments

---

| | |
|:---|:---|
|  | £m |
| At 1 January 2021 | 3.4 |
| Additions | 0.1 |
| Revaluation to fair value | (0.1) |
| Exchange differences | 0.1 |
| At 31 December 2021 | 3.5 |
| Additions |  |
| Revaluation to fair value | (0.4) |
| Exchange differences | 0.1 |
| At 31 December 2022 | 3.2 |

---

------

Adjustments to fair value in the fiscal year ended 31 December 2022 relate to changes in the fair value of the Group's investment in Plexbio, Inc (year ended 31 December 2021: changes in the fair value of the Group's investment in Plexbio, Inc).

Additions in the year ended 31 December 2021 relate primarily to increased investment in Somaserve Limited.

Subsidiary undertakings

---

| | | | |
|:---|:---|:---|:---|
| Name | Registered office | Country of incorporation or<br>registration | Principal activity |
| Abcam Australia Pty Limited | Level 16, 414 La Trobe Street, Melbourne, VIC 3000 | Australia | Sales and distribution |
| Abcam (Hangzhou) Biotechnology Co., Limited | 1418 Moganshan Road, Hangzhou Zhejiang, 310011 | China | R&D and manufacturing |
| Abcam (Hong Kong) Limited | 1301 Ruttonjee House, Ruttonjee Centre, 11 Duddell Street, Central Hong Kong SAR | Hong Kong | Sales and distribution |
| Abcam (Netherlands) B.V. | Kingsfordweg 151, 1043GR Amsterdam | Netherlands | Sales and distribution |
| Abcam (US) Limited | Discovery Drive, Cambridge Biomedical Campus, Cambridge CB2 0AX | England | Holding company |
| Abcam Inc. | 152 Grove Street, Suite 1100, Waltham, MA 02453 | USA | Sales and distribution |
| Abcam KK | Sumitomo Fudousan, Ningyocho Bldg 2F, 2-2-1 Nihonbashi Horidomecho Chuo-ku Tokyo 103-0012 | Japan | Sales and distribution |
| Abcam LLC | Corporation Service Company, 251 Little Falls Drive, Wilmington, New Castle, DE 19808 | USA | Holding company |
| Abcam Singapore Pte. Limited | 11 North Buona Vista Drive, #16-08 The Metropolis Tower Two, Singapore 138589 | Singapore | Sales and distribution |
| Abcam Taiwan Company Limited | 15F, No.2-1, Sec. 3, Minquan E. Road., Zhongshan District, Taipei City, Taiwan | Taiwan | Sales and distribution |
| Abcam Trading (Shanghai) Co., Limited | Room 5401, Floor 4, Building 5, No. 338 Galileo Road, Pudong New Area, Shanghai | China | Sales and distribution |
| Abcam US Group Holdings, Inc. | Corporation Service Company, 251 Little Falls Drive, Wilmington, New Castle, DE 19808 | USA | Holding company |
| AbShare Share Plan Limited | Discovery Drive, Cambridge Biomedical Campus, Cambridge, CB2 0AX | England | Dormant |
| Ascent Scientific Limited\* | C/O BDO LLP, 55 Baker Street, London, W1U 7EU | England | Dormant |
| AxioMx Inc. | Corporation Service Company, 251 Little Falls Drive, Wilmington, New Castle, DE 19808 | USA | R&D and manufacturing |
| BioVision Inc. | Corporation Service Company, which will do business in CA as CSC-Lawyers Incorporating Service, 2710 Gateway Oaks Drive, Suite 150N, Sacramento, CA 95833 | USA | R&D and manufacturing |
| Calico Biolabs Inc. | Corporation Service Company, 251 Little Falls Drive, Wilmington, New Castle, DE 19808 | USA | Dormant |
| Epitomics Inc. | Corporation Service Company, 251 Little Falls Drive, Wilmington, New Castle, DE 19808 | USA | R&D and manufacturing |
| Epitomics Holdings, Inc. | Corporation Service Company, 251 Little Falls Drive, Wilmington, New Castle, DE 19808 | USA | Holding company |
| Expedeon Holdings Limited | Discovery Drive, Cambridge Biomedical Campus, Cambridge, CB2 0AX | England | Holding company |
| Expedeon Limited | Discovery Drive, Cambridge Biomedical Campus, Cambridge CB2 0AX | England | Dormant |
| Firefly BioWorks Inc. | Corporation Service Company, 251 Little Falls Drive, Wilmington, New Castle, DE 19808 | USA | R&D and manufacturing |

---

------

---

| | | | |
|:---|:---|:---|:---|
| Name | Registered office | Country of incorporation or<br>registration | Principal activity |
| Innova BioSciences Limited | Discovery Drive, Cambridge Biomedical Campus, Cambridge, CB2 0AX | England | Dormant |
| Marker Gene Technologies, Inc. | Corporation Service Company, 1127 Broadway St. NE, Suite 310, Salem, OR 97301 | USA | R&D and manufacturing |
| MitoSciences Inc. | Corporation Service Company, 251 Little Falls Drive, Wilmington, New Castle, DE 19808 | USA | R&D and manufacturing |
| NKY Biotech, US Inc | Corporation Service Company, 251 Little Falls Drive, Wilmington, New Castle, DE 19808 | USA | Holding company |
| TGR BioSciences Pty Limited | 31 Dalgleish Street, Thebarton, South Australia 5031 | Australia | R&D and manufacturing |

---

\* In liquididation

Expedeon Asia Pte Limited was liquidated during the year ended 31 December 2022.

The Group's holdings in subsidiaries are all through ordinary shares and are all 100% owned.

17. Deferred tax assets and liabilities

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | Accelerated<br>capital<br>allowances<br>£m | Cash<br>flow<br>hedges<br>£m | Share<br>-based<br>payments<br>£m | Acquired<br>intangible<br>asset\*<br>£m | Losses<br>£m | Other<br>temporary<br>differences<br>£m | Total<br>£m |
|  At 1 January 2021 | (9.9) |  | 5.7 | (17.8) | 4.9 | 5.1 | (12.0) |
|  (Charge)/credit to income | (5.3) |  | 6.4 | 5 | 1.2 | 1 | 8.3 |
|  Charge to equity |  |  | (4.5) |  |  |  | (4.5) |
|  Credit to other comprehensive income |  |  |  |  |  | 0.9 | 0.9 |
|  Arising on acquisition\* |  |  |  | (19.9) |  | (1.6) | (21.5) |
|  Reclassification | 0.5 |  |  | 0.1 |  | (0.6) |  |
|  Exchange differences | (0.1) |  |  | 0.4 |  | 0.2 | 0.5 |
|  At 31 December 2021\* | (14.8) |  | 7.6 | (32.2) | 6.1 | 5 | (28.3) |
|  (Charge)/credit to income | (8.3) |  | 5.5 | 7.5 | 5.8 | 2.4 | 12.9 |
|  Charge to equity |  |  | (1.4**)** |  |  |  | (1.4**)** |
|  Credit to other comprehensive income |  | 0.1 |  |  |  |  | 0.1 |
|  Exchange differences | 0.1 |  |  | (3.6) | 0.1 | 0.1 | (3.3) |
|  At 31 December 2022 | (23.0) | 0.1 | 11.7 | (28.3) | 12 | 7.5 | (20.0**)** |

---

\* See note 29 for details related to the measurement period adjustment to the accounting for the acquisition of BioVision.

Deferred tax assets and liabilities are offset where the Group has a legally enforceable right to do so and an intention to settle net.

Deferred tax balances are comprised as follows:

---

| | | |
|:---|:---|:---|
|  | 31 December<br>2022<br>£m | 31 December<br>2021\*<br>£m |
| Deferred tax assets to be recovered |  |  |
|  Within 12 months | 13.4 | 3.6 |
|  After more than 12 months | (1.3) | 9.6 |
|  | 12.1 | 13.2 |
| Deferred tax liabilities to be settled |  |  |
|  Within 12 months | 0.1 | 4.6 |
|  After more than 12 months | (32.2) | (46.1) |
|  | (32.1) | (41.5) |
|  Deferred tax liabilities (net) | (20.0**)** | (28.3) |

---

------

\* See note 29 for details related to the measurement period adjustment to the accounting for the acquisition of BioVision.

Deferred tax is calculated using tax rates that are expected to apply in the period when the liability or asset is expected to be realized based on rates enacted or substantively enacted by the reporting date.

18. Inventories

---

| | | |
|:---|:---|:---|
|  | 31 December<br>2022<br>£m | 31 December<br>2021<br>£m |
|  Raw materials | 13.8 | 10.0 |
|  Work in progress | 23.2 | 25.0 |
|  Finished goods and goods for resale | 31.0 | 23.2 |
|  At 31 December 2022 | 68.0 | 58.2 |

---

Inventories are stated net of provision for slow moving or defective inventory of £14.8m (31 December 2021: £13.7m). Cost of inventories recognized as an expense and write down of inventories recognized as an expense (and which are included as part of cost of sales) are set out in note 6.

19. Trade and other receivables

---

| | | |
|:---|:---|:---|
|  | 31 December<br>2022<br>£m | 31 December<br>2021\*<br>£m |
|  Amounts receivable for the sale of goods and services | 69.4 | 34.0 |
|  Less provision for bad and doubtful debts | (2.4) | (0.8) |
|  | 67.0 | 33.2 |
| Other receivables\* | 9.4 | 22.2 |
|  Prepayments | 7.6 | 5.1 |
|  | 84.0 | 60.5 |

---

\* This relates to a measurement period adjustment to the consideration for the acquisition of BioVision, whereby this was reduced by $18.0m (£13.3m) but the cash was not received until the year ended 31 December 2022 (refer to note 29 for further details). 

Ageing of trade receivables:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | 31 December 2022 | 31 December 2022 | 31 December 2022 | 31 December 2021 | 31 December 2021 | 31 December 2021 |
|  | Gross<br> £m | Provision<br> £m | Net<br> £m | Gross<br> £m | Provision<br> £m | Net<br> £m |
|  Not past due | 26.5 |  | 26.5 | 18.7 |  | 18.7 |
|  Past due |  |  |  |  |  |  |
|  0 to 30 days | 12.7 | (0.1) | 12.6 | 5.8 |  | 5.8 |
|  30 to 60 days | 8.3 | (0.2) | 8.1 | 2.9 |  | 2.9 |
|  More than 60 days | 21.9 | (2.1) | 19.8 | 6.6 | (0.8) | 5.8 |
|  | 42.9 | (2.4) | 40.5 | 15.3 | (0.8) | 14.5 |
|  | 69.4 | (2.4) | 67.0 | 34.0 | (0.8) | 33.2 |

---

Movement in provision for bad and doubtful debts:

---

| | | |
|:---|:---|:---|
|  | 31 December<br>2022<br>£m | 31 December<br>2021<br>£m |
|  Balance at beginning of the year / period | (0.8) | (0.7) |
|  Impairment losses recognized in the income statement | (1.6) | (0.1) |
|  Balance at end of the year / period | (2.4) | (0.8) |

---

------

The average credit period taken for sales is 61 days (31 December 2021: 35 days). Trade and other receivables are non-interest bearing and generally on terms between 30 to 90 days. Trade receivables are provided for based on estimated irrecoverable amounts determined by specific circumstances as described in note 4.

The Group does not hold any collateral or other credit enhancements over its trade receivables, nor do they have a legal right to offset against any amounts owed to the counterparty.

The Directors consider that the carrying amount of trade and other receivables approximates their fair value.

20. Derivative financial instruments

31 December 2022

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | Asset<br> £m | Current<br> Liability<br> £m | Non-current<br> liability<br> £m | Total<br> £m |
|  Derivatives carried at fair value through profit and loss |  |  |  |  |
|  Forward exchange contracts that are not designated in hedge accounting relationships |  | (0.2) |  | (0.2) |
|  Derivatives that are designated and effective as hedging instruments carried at fair value |  |  |  |  |
|  Forward exchange contracts | 0.5 | (0.6) |  | (0.1) |
|  | 0.5 | (0.8) |  | (0.3) |

---

31 December 2021

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | Asset<br> £m | Current<br> Liability<br> £m | Non-current<br> liability<br> £m | Total<br> £m |
|  Derivatives carried at fair value through profit and loss |  |  |  |  |
|  Forward exchange contracts that are not designated in hedge accounting relationships | 0.2 | (0.1) |  | 0.1 |
|  Derivatives that are designated and effective as hedging instruments carried at fair value |  |  |  |  |
|  Forward exchange contracts | 0.3 | (0.1) |  | 0.2 |
|  | 0.5 | (0.2) |  | 0.3 |

---

Further details of derivative financial instruments are provided in note 26.

21. Trade and other payables

---

| | | |
|:---|:---|:---|
|  | 31 December<br>2022<br>£m | 31 December<br>2021\*<br>£m |
| Amounts falling due within one year |  |  |
| Trade payables | 15.8 | 12.9 |
| Accruals | 36.3 | 28.1 |
| Deferred income | 7.3 | 6.6 |
| Other taxes and social security | **1.9** | 3.0 |
| Other payables | **6.5** | 18.4 |
|  | **67.8** | 69.0 |

---

\* See note 29 for details related to the measurement period adjustment to the accounting for the acquisition of BioVision

At 31 December 2022, the Group had an average of 38 days of purchases (31 December 2021: 34 days) outstanding in trade payables (excluding accruals and deferred income). The Group has financial risk management policies in place to ensure that all payables are paid within the credit timetable. The Directors consider that the carrying amount of trade and other payables approximates to their fair value.

------

Deferred income includes contract liabilities of £3.2m (31 December 2021: £3.1m) which represent consideration received for performance obligations not yet satisfied, in delivering products or services to customers. All deferred income is to be recognized within the next financial year.

22. Borrowings

---

| | | |
|:---|:---|:---|
|  | 31 December<br>2022<br>£m | 31 December<br>2021<br>£m |
|  Amounts falling due within one year |  |  |
|  Loan | 119.6 | 119.2 |

---

The loan comprises drawings on the Group's three year £200.0m RCF which was entered into in February 2019 and is shown net of unamortized facility arrangement fees. The RCF has a £100.0m accordion option which may be requested with prior notice at any time up to six months of the termination date. The initial term of this RCF had two extension options of one year each whereby the Company exercised the option for a two year extension on 17 December 2020 such that on 7 January 2021, the Company received approval from all syndicate banks. This extends the expiry of the facility to 31 January 2024. All other terms of the facility remain unchanged.

On 19 October 2021, the Group drew £120.0m to fund the purchase of BioVision (as set out in note 29).

The Group is subject to financial covenants on the RCF and has complied with these at all testing points in 2021 and 2022.

On 7 March 2023, the Group replaced its existing RCF which was due to expire on January 31 2024 with a new RCF for an amount of £300.0m. See note 31 for further details.

23. Share capital and reserves

Share capital

---

| | | |
|:---|:---|:---|
|  | 31 December<br>2022<br>£m | 31 December<br>2021<br>£m |
|  Authorized, issued and fully paid: |  |  |
|  229,309,701 (31 December 2021: 228,886,439) ordinary shares of 0.2 pence each | 0.5 | 0.5 |

---

The Company has one class of ordinary shares which carries no right to fixed income.

Other reserves

Merger reserve

Comprises the premium on shares issued as consideration for acquisitions where conditions for merger relief have been satisfied.

Own shares

Represents shares in the Company held by the Equiniti Share Plan Trustees Limited. These shares are held in order to satisfy the Free Shares and Matching Shares elements of the SIP, further details of which are set out in note 27.

---

| | | | | |
|:---|:---|:---|:---|:---|
| | 31 December 2022 | 31 December 2022 | 31 December 2021 | 31 December 2021 |
| | Nominal value<br> £'000 | Number | Nominal value<br> £'000 | Number |
|  Own shares | 1 | 272400 | 1 | 349500 |

---

Translation reserve

Represents exchange differences on translation of overseas operations.

------

Hedging reserve

Comprises gains and losses recognized on cash flow hedges and the associated deferred tax assets.

24. Dividends

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | Year ended<br> 31 December 2022<br> £m | Year ended<br> 31 December 2021<br> £m | Six months ended<br>31 December 2020<br> £m | Year ended<br>30 June 2020<br> £m |
|  Amounts recognized as distributions to the equity shareholders: |  |  |  |  |
|  Final dividend for the year ended 30 June 2019 of 8.58 pence per share |  |  |  | 17.7 |
|  Interim dividend for the year ended 30 June 2020 of 3.55 pence per share |  |  |  | 7.3 |
|  Total distributions to owners of the parent in the year / period |  |  |  | 25.0 |

---

25. Notes to the cash flow statement

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | Note | Year ended<br> 31 December<br> 2022<br> £m | Year ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year ended<br> 30 June<br> 2020<br> £m |
|  Operating (loss) / profit |  | (10.1) | 7.1 | 17.3 | 10.4 |
|  Adjustments for: |  |  |  |  |  |
|  Depreciation of property, plant and equipment | 14 | 15 | 11 | 4.3 | 7.3 |
|  Depreciation of right-of-use assets | 15 | 11.5 | 9.1 | 3.8 | 6.7 |
|  Amortization of intangible assets | 13 | 26.4 | 20.9 | 7.9 | 15.7 |
|  Impairment of intangible assets | 13 | 1 | 3.8 |  | 14.9 |
|  Impairment of asset held for sale | 8 | 18.3 |  |  |  |
|  Loss on disposal of property, plant and equipment | 14 |  | 0.5 | 0.2 |  |
|  Loss on disposal of right of use asset |  | 0.6 |  |  |  |
|  Derivative financial instruments at fair value through profit or loss | 6 | 0.2 |  | (0.4) |  |
|  Research and development expenditure credit | 6 | (2.0) | (2.5) | (0.7) | (1.5) |
|  Share-based payments charge | 27 | 23.3 | 17.9 | 7.3 | 9.3 |
|  Unrealized currency translation (gains) / losses |  | (1.3) | 0.4 | 1 | (1.4) |
|  Operating cash flows before movements in working capital |  | 82.9 | 68.2 | 40.7 | 61.4 |
|  Increase in inventories |  | (7.4) | (6.2) | (3.5) | (1.1) |
| (Increase) / decrease in receivables |  | (33.3**)** | 4 | (7.7) | 2.7 |
| (Decrease) / increase in payables |  | (6.2**)** | 6.2 | 3.6 | 2.4 |
|  Cash generated from operations |  | 36 | 72.2 | 33.1 | 65.4 |

---

Analysis of changes in net debt

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | Cash and cash<br>equivalents<br>£m | Lease liabilities\*<br>£m | Borrowings\*<br>£m | Net debt<br>£m |
| At 1 January 2021 | 211.9 | (117.0) |  | 94.9 |
|  Additions to leases |  | (4.1) |  | (4.1) |
|  Cash flow | (117.2) | 10.3 | (120.0) | (226.9) |
|  Foreign exchange and other non-cash movements | 0.4 | 0.3 | 0.8 | 1.5 |
|  At 31 December 2021 | 95.1 | (110.5) | (119.2) | (134.6) |
|  Additions to leases |  | (1.2) |  | (1.2) |
|  Cash flow | (11.2) | 13.4 |  | 2.2 |
|  Foreign exchange and other non-cash movements | 5.1 | (6.0) | (0.4) | (1.3) |
|  At 31 December 2022 | 89.0 | (104.3) | (119.6) | (134.9) |

---

------

Total financial liabilities included within net debt comprise those items marked \* and amount to £223.9m (31 December 2021: £229.7m).

Liabilities arising from financing activities comprise the Group's RCF (as set out in note 22) and lease liabilities (as set out in note 15).

26. Financial instruments

Capital risk management

The capital structure of the Group comprises of cash and cash equivalents, a Revolving Credit Facility (RCF) and total equity attributable to the owners of the parent. The RCF of £200m was entered into in February 2019 with an initial term of three years and has a £100m additional accordion option. The Company exercised the option for a two year extension on 17 December 2020 such that on 7 January 2021, the Company received approval from all syndicate banks, extending the expiry of the facility to 31 January 2024). The Group maintains a capital structure with the following objectives:

–&nbsp;&nbsp;&nbsp;&nbsp;to protect the ability of the Group to continue as a going concern and maintain sufficient available resources as protection for unforeseen events;

–&nbsp;&nbsp;&nbsp;&nbsp;to provide flexibility of resource for strategic growth and investment where opportunities arise; and

–&nbsp;&nbsp;&nbsp;&nbsp;to provide reasonable returns to shareholders whilst maintaining a limited level of risk.

Where appropriate the Group uses financial derivatives to help mitigate the key risks, the use of which is governed by the Group's policies approved by the Board of Directors. The Group does not enter into or trade financial instruments, including derivative financial instruments, for speculative purposes.

Foreign currency risk

This is the risk that a change in currency rates causes an adverse impact on the Group's performance or financial position.

The Group has transactions denominated in various currencies with the principal currency exposure being fluctuations in US Dollars (USD), Euros, Japanese Yen and Chinese Renminbi (RMB). Collectively these currencies make up approximately 90% of the Group's revenue and cash inflows. Whilst a large portion of the manufacturing and research and development costs are USD and RMB, giving a natural offset against the currency inflows, the majority of administration costs remain as Sterling leaving an overall net currency inflow in the Group's cash flows.

This remaining currency exposure is centrally managed with the objective being to secure a level of certainty of Sterling value for up to 90% of the future net exposure based on forecast cash flows expected to occur up to 18 months ahead. The Group uses forward currency contracts to achieve this objective and applies hedge accounting where applicable. Foreign currency forward contracts are valued using quoted forward exchange rates and yield curves matching maturities of the contracts.

No hedges were designated as ineffective in the year ended 31 December 2022.

------

The Group's open forward currency contracts and their maturity profile as at the period / year end is as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | 31 December<br>2022 | 31 December<br>2022 | 31 December<br>2021 | 31 December<br>2021 |
| Outstanding contracts | Average<br>rate | Foreign currency<br>million | Average<br>rate | Foreign currency<br>million |
| Sell US Dollars |  |  |  |  |
|  Less than 3 months | 1.21 | $3.2 |  |  |
|  3 to 6 months | 1.18 | $6.6 | 1.36 | $0.2 |
|  7 to 12 months | 1.18 | $5.3 |  |  |
|  | 1.19 | $15.1 | 1.36 | $0.2 |
|  Sell Euros |  |  |  |  |
|  Less than 3 months | 1.15 | 9.9 | 1.16 | 8.2 |
|  3 to 6 months | 1.15 | 7.8 | 1.16 | 6.9 |
|  7 to 12 months | 1.13 | 6.3 | 1.17 | 5.9 |
|  13 to 18 months |  |  |  |  |
|  | 1.15 | 24.0 | 1.16 | 21.0 |
|  Sell Yen |  |  |  |  |
|  Less than 3 months | 159.86 | ¥431.1 | 150.88 | ¥461.0 |
|  3 to 6 months | 159.87 | ¥427.5 | 152.58 | ¥452.2 |
|  7 to 12 months | 157.59 | ¥310.7 | 151.73 | ¥296.0 |
|  13 to 18 months |  | ¥— |  |  |
|  | 159.25 | ¥1169.3 | 151.72 | ¥1209.2 |
|  Sell Chinese Renminbi |  |  |  |  |
|  Less than 3 months | 8.27 | ¥35.6 | 9.03 | ¥24.5 |
|  3 to 6 months | 8.18 | ¥22.3 | 8.99 | ¥17.2 |
|  7 to 12 months | 8.19 | ¥16.5 | 8.85 | ¥16.6 |
|  | 8.22 | ¥74.4 | 8.96 | ¥58.3 |

---

At 31 December 2022, the fair value of contracts held as cash flow hedges is a net liability of £0.1m (31 December 2021: net asset of £0.2m).

The movement recognised in other comprehensive income / (expense) in the period:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | Year ended<br> 31 December<br> 2022 | Year ended<br> 31 December<br> 2021 | Six months ended<br> 31 December<br>2020  | Year ended<br> 30 June<br>2020  |
|  | £m | £m | £m | £m |
| (Loss) / gain in the year / period | (0.6) | (0.1) | 1.5 | 0.7 |
|  Recycled to profit and loss | 0.2 |  | (0.4) |  |
| (Loss) / gain recognized in other comprehensive income / (expense) | (0.4) | (0.1) | 1.1 | 0.7 |

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Currency risk sensitivity analysis

The following table shows the sensitivity of the Group's financial instruments to changes in exchange rates by detailing the impact on profit and other comprehensive income of a 10% change in the Sterling exchange rate against the relevant foreign currencies.

10% represents management's assessment of a reasonably possible change in foreign exchange rates over a 12 month period.

------

The sensitivity analysis below only includes financial instruments denominated in non-functional currency and forward currency contracts outstanding at the reporting date and represents the impact of an immediate change in Sterling against other currencies.

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| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | US Dollar<br> currency impact | US Dollar<br> currency impact | Euro<br> currency impact | Euro<br> currency impact | Yen<br> currency impact | Yen<br> currency impact | RMB<br> currency impact | RMB<br> currency impact |
|  | +10%<br>£m | -10%<br>£m | +10%<br>£m | -10%<br>£m | +10%<br>£m | -10%<br>£m | +10%<br>£m | -10%<br>£m |
|  31 December 2022 |  |  |  |  |  |  |  |  |
|  Income statement | 0.5 | (0.6) | 0.5 | (0.6) | 0.3 | (0.4) | 0.2 | (0.2) |
|  Other comprehensive income | 1.1 | (1.4) | 1.4 | (1.8) | 0.5 | (0.6) | 0.8 | (1.0) |
|  31 December 2021 |  |  |  |  |  |  |  |  |
|  Income statement | 1.1 | (1.3) | 0.4 | (0.5) | 0.4 | (0.5) | 0.3 | (0.3) |
|  Other comprehensive income |  |  | 1.3 | (1.5) | 0.4 | (0.5) | 0.3 | (0.4) |

---

The sensitivity analysis is limited to the period / year end exposure and therefore does not reflect the exposure and inherent risk during the year.

Liquidity risk

This is the risk that the Group will have insufficient funds available in the right currency to settle its obligations as they fall due.

The Group generates funds from operational activities in excess of its operational requirements and has substantial cash balances available for its current investment activities.

The Board reviews the funding requirement of the Group as part of the budgeting and long-term planning processes and considers as necessary alternative possible sources of funding where the requirement is not satisfied by the Group's forecast operational cash generation.

The Group manages liquidity risk by maintaining an adequate level of easily accessible cash reserves, in a currency profile representative of the Group's cost base and matching customer and supplier terms where possible. The Group also has access to daily currency trading facilities which provides the ability to convert currency within the agreed settlement limits as required.

On 7 March 2023, the Group replaced its existing RCF which was due to expire on January 31 2024. The new RCF has a term of 4 years, with the option to extend for one further year, for an amount of £300m and with no accordion option. The amount of £120m drawn down on the previous RCF was rolled forward into the new facility. See note 31 for further details.

The maturity profile of financial liabilities shown below represents the Group's gross expected contractual cash flows.

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Less than<br>1 year | Between<br>2 and 5 years | Over<br>five years | Total |
|  | £m | £m | £m | £m |
| 31 December 2022 |  |  |  |  |
| Trade and other payables | 55.3 |  |  | 55.3 |
| Borrowings | 120.0 |  |  | 120.0 |
| Lease liabilities | 10.7 | 40.0 | 67.7 | 118.4 |
| Derivative financial instruments | 50.1 |  |  | 50.1 |
| 31 December 2021 |  |  |  |  |
| Trade and other payables | 46.0 |  |  | 46.0 |
| Borrowings | 120.0 |  |  | 120.0 |
| Lease liabilities | 11.1 | 47.0 | 64.0 | 122.1 |
| Derivative financial instruments | 32.4 |  |  | 32.4 |

---

The Group holds sufficient funds to meet these commitments as they fall due.

Credit risk

This refers to the risk that a counterparty will default on its contractual obligations resulting in financial loss to the Group.

------

The Group is exposed to credit risk on its financial assets; however, there is not deemed to be a significant exposure due to the nature of its customer base and the types of transaction that are undertaken.

Trade receivables consist of a large number of customers spread globally with the majority being in economically strong geographies. The Group's customer base is predominantly government-funded institutions, pharmaceutical companies conducting research, and local distributors. The perceived risk of default is deemed to be low.

Further information on the Group's trade receivable ageing and impairment can be found in note 19.

The Group generates significant levels of operational cash. Cash in excess of local operational requirements is remitted and managed centrally. Exposure to counterparty default risk is managed by limiting the concentration of funds and contracts held with individual financial institutions and ensuring funds are only placed with institutions or in products rated BBB- or above by Standard & Poor's.

Interest rate risk

This refers to the risk that a potential change in interest rates will increase the group's exposure to greater net finance costs and increased cash outflows in servicing debt. The Group is exposed to fluctuations in interest rates on its cash, cash equivalents and borrowings.

The Group's interest rate risk consists of:

• Floating interest rate risk, arising on any drawings under the RCF. Changes in floating interest rates affect finance expense and cash flows. Interest rates are set with reference to market interest rates such as SONIA; and

• interest rate risk associated with the Group's cash deposits. The Group's overall objective with respect to holding these deposits is to maintain a balance between security of funds, accessibility and competitive rates of return.

Exposure to interest rate risk is managed through optimizing the return on surplus funds, whilst maintaining sufficient liquidity to manage operating cash flows, as well as regular monitoring of debt levels and the cost of servicing these.

A 1% increase in the interest rates would have increased annual finance costs by £1.0m (2021: £0.6m). A 1% decrease would have decreased annual finance costs by £1.0m (2021: £1.2m).

Categories of financial instruments

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| | | |
|:---|:---|:---|
|  | 31 December<br>2022 | 31 December<br>2021\* |
|  | £m | £m |
| Financial instruments held at amortized cost |  |  |
| Trade receivables | 67.0 | 33.2 |
| Other receivables | 3.4 | 16.1 |
| Cash and cash equivalents | 89.0 | 95.1 |
| Trade and other payables | (55.3) | (46.0) |
| Borrowings | (120.0) | (120.0) |
| Lease liabilities | (104.3**)** | (110.5) |
| Financial instruments held at fair value |  |  |
| Derivative financial instruments | (0.3) | 0.3 |
| Investment | 3.2 | 3.5 |

---

\* See note 29 for details related to the measurement period adjustment to the accounting for the acquisition of BioVision.

The Directors consider there to be no material difference between the carrying value and the fair value of the financial instruments classified as held at amortized cost. For the items classified as held at fair value, the fair value is recognized on the balance sheet as the carrying amount.

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Financial instruments held at fair value

Financial instruments that are measured at fair value are classified using a fair value hierarchy that reflects the source of inputs used in deriving the fair value. The three classification levels are:

• Level 1: quoted prices (unadjusted) in active markets for identical assets or liabilities;

• Level 2: inputs other than quoted prices included within Level 1 that are observable for the asset or li ability, either directly (i.e. as prices) or indirectly (i.e. derived from prices); and

• Level 3: inputs for the asset or liability that are not based on observable market data (unobservable market inputs).

The following table presents the Group's assets and liabilities carried at fair value by valuation method.

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Level 1<br>£m | Level 2<br>£m | Level 3<br>£m | Total<br>£m |
| 31 December 2022 |  |  |  |  |
| Assets |  |  |  |  |
| Derivative financial instruments |  | 0.5 |  | 0.5 |
| Investment | 0.7 |  | 2.5 | 3.2 |
|  | 0.7 | 0.5 | 2.5 | 3.7 |
| Liabilities |  |  |  |  |
| Derivative financial instruments |  | (0.8) |  | (0.8) |
|  |  | (0.8) |  | (0.8) |
| 31 December 2021 |  |  |  |  |
| Assets |  |  |  |  |
| Derivative financial instruments |  | 0.5 |  | 0.5 |
| Investment | 1 |  | 2.5 | 3.5 |
|  | 1 | 0.5 | 2.5 | 4 |
| Liabilities |  |  |  |  |
| Derivative financial instruments |  | (0.2) |  | (0.2) |
|  |  | (0.2) |  | (0.2) |

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Level 1 investments comprise listed equity securities in Plexbio, Inc. Further information is included in note 16.

Level 2 derivative financial instruments comprise forward foreign exchange contracts. The fair value is remeasured on a monthly basis with reference to available forward market rates and comparative instrument pricing.

Level 3 investments comprise non-listed equity securities in respect of a 13% stake in Brickbio, Inc. and, for the year ended 31 December 2021, and onwards, includes a 14% stake in Somaserve Limited. The fair value is determined to be equal to the carrying amount of the investment and is reviewed periodically based on information available about the performance of the underlying business.

27. Share-based payments

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
| Expense arising from share-based payment transactions: |  |  |  |  |
| Included in selling, general and administrative expenses | 20.7 | 15.6 | 5.1 | 6.6 |
| Included in research and development expenses | 2.6 | 2.3 | 2.2 | 2.7 |
|  | 23.3 | 17.9 | 7.3 | 9.3 |
| Equity settled share-based payment expense | 23.3 | 17.8 | 7.2 | 9.2 |
| Cash settled share-based payment expense\* |  | 0.1 | 0.1 | 0.1 |
|  | 23.3 | 17.9 | 7.3 | 9.3 |

---

\* The total liability as at 31 December 2022 was £0.2m (31 December 2021: £0.2m) of which less than £0.1m (31 December 2021: less than £0.1m) relates to options which have vested. 

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Equity settled share option schemes

The Group operates a number of share schemes for certain employees of the Group as follows:

• 2005 and 2015 Share Option Scheme (ISO/Unapproved) (SOS)

• Company Share Option Plan 2009 (CSOP);

• Long Term Incentive Plan (LTIP);

• Profitable Growth Incentive Plan (PGIP);

• Annual bonus plan—deferred share award (DSA);

• Share Incentive Plan (SIP);

• Non-Executive Directors (NED) share award; and

• Growth Plan (AGP).

Options or conditional share grants under each scheme have been aggregated.

The vesting period ranges from one to four years. Options which remain unexercised after a period of 10 years from the date of grant expire. Options are forfeited if the employee leaves the Group before they vest, save where the employee is deemed to be a 'good leaver' in which case options awarded are pro-rated to the leaving date.

Discretionary awards

Share option plans: SOS and CSOP

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| | | | | |
|:---|:---|:---|:---|:---|
| | Year ended<br> 31 December 2022 | Year ended<br> 31 December 2022 | Year ended<br> 31 December 2021 | Year ended<br> 31 December 2021 |
| | Number | Weighted<br> average<br> exercise price<br> pence | Number | Weighted<br> average<br> exercise price<br> pence |
| Outstanding at beginning of year / period | 391817 | 726.5 | 621755 | 507.9 |
| Forfeited | (8445) | 843.9 | (57329) | 727.3 |
| Exercised | (136709) | 697.6 | (172609) | 753.5 |
| Outstanding at end of year / period | 246663 | 738.5 | 391817 | 726.5 |
| Number of options exercisable at end of year / period | 246663 | 738.5 | 391817 | 726.5 |

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| | | | | |
|:---|:---|:---|:---|:---|
| | Six months ended<br> 31 December 2020 | Six months ended<br> 31 December 2020 | Year ended<br> 30 June 2020 | Year ended<br> 30 June 2020 |
| | Number | Weighted<br> average<br> exercise price<br> pence | Number | Weighted<br> average<br> exercise price<br> pence |
| Outstanding at beginning of year / period | 701272 | 559.7 | 947948 | 640.1 |
| Forfeited | (20823) | 1500.1 | (72526) | 1259.1 |
| Exercised | (58694) | 774.0 | (174150) | 706.4 |
| Outstanding at end of year / period | 621755 | 507.9 | 701272 | 559.7 |
| Number of options exercisable at end of year / period | 519442 | 703.1 | 519442 | 661.7 |

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Analyzed by range of exercise price:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | Grant year | Year ended<br> 31 December 2022 | Year ended<br> 31 December 2022 | Year ended<br> 31 December 2021 | Year ended<br> 31 December 2021 |
| | Grant year | Number<br> outstanding | Weighted<br> average<br> remaining<br> contract life | Number<br> outstanding | Weighted<br> average<br> remaining<br> contract life |
| 180.8p-464.0p | Prior to 2016 | 71883 | 1.5 years | 122688 | 2.2 years |
| 598.0p | 2016 | 38946 | 2.8 years | 59852 | 3.8 years |
| 851.0p | 2017 | 61003 | 3.8 years | 94632 | 4.8 years |
| 1,020.0p | 2018 | 74831 | 4.8 years | 114645 | 5.8 years |
|  |  | 246663 | 3.3 years | 391817 | 4.2 years |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | Grant year | Six months ended<br> 31 December 2020 | Six months ended<br> 31 December 2020 | Year ended<br> 30 June 2020 | Year ended<br> 30 June 2020 |
| | Grant year | Number<br> outstanding | Weighted<br> average<br> remaining<br> contract life | Number<br> outstanding | Weighted<br> average<br> remaining<br> contract life |
| 180.8p-464.0p | Prior to 2016 | 184725 | 2.9 years | 197901 | 3.4 years |
| 598.0p | 2016 | 99780 | 4.8 years | 111033 | 5.3 years |
| 851.0p | 2017 | 137463 | 5.8 years | 161372 | 6.3 years |
| 1,020.0p | 2018 | 199787 | 6.8 years | 230966 | 7.3 years |
|  |  | 621755 | 5.1 years | 701272 | 5.7 years |

---

<u>Year ended 31 December 2022</u> <u>Year ended 31 December 2021</u> <u>Six months ended 31 December 2020</u> <u>Year ended 30 June 2020</u> <br> Weighted average share price at date of exercise 1,322.6p 1,589.0p 1,396.4p 1,329.2p

There were no grants issued under the SOS in the year ended 31 December 2022, the year ended 31 December 2021, the six months ended 31 December 2020 or the years ended 30 June 2020. All shares granted under these schemes have fully vested.

Share award plans: LTIP and DSA

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year ended<br> 31 December<br> 2022<br> Number | Year ended<br> 31 December<br> 2021<br> Number | Six months<br> ended<br> 31 December<br> 2020<br> Number | Year ended<br> 30 June<br> 2020<br> Number |
|  Outstanding at beginning of year / period | 1005345 | 1271179 | 1085162 | 988127 |
|  Granted | 460018 | 142314 | 462460 | 470834 |
|  Forfeited | (195221) | (167298) | (131099) | (121127) |
|  Exercised | (257815) | (240850) | (145344) | (252672) |
|  Outstanding at end of year / period | 1012327 | 1005345 | 1271179 | 1085162 |
|  Number of options exercisable at end of year / period | 95245 | 63759 | 65380 | 72760 |

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year ended<br> 31 December<br> 2022 | Year ended<br> 31 December<br> 2021 | Six months<br> ended<br> 31 December<br> 2020 | Year<br> ended<br> 30 June<br> 2020 |
|  Weighted average fair value of awards granted | 1,169.9p | 1,380.1p | 1,398.1p | 1,208.3p |
|  Weighted average share price at date of exercise | 1,370.4p | 1,642.1p | 1,329.6p | 1,185.2p |
|  Weighted average remaining contractual life | 3.2 years | 4 years | 4.3 years | 3.3 years |

---

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Fair values of the awards with a performance condition based on non-market conditions, for example EPS, are calculated using the Black-Scholes model. The inputs into the models for awards granted in the current and prior periods were as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year ended 31 December 2022 | Year ended 31 December 2022 | Year ended 31 December 2022 | Year ended 31 December 2022 |
|  | LTIP<br> 14-Sep-2022 | LTIP<br> 18-May<br> 2022 | LTIP<br> 18-May<br> 2022 | DSA<br> 25-Mar<br> 2022 |
|  Share price at grant (pence) | 1383.0 | 1104.0 | 1104.00 | 1358.0 |
|  Expected volatility | 33% | 31% | 32% | 35% |
|  Contractual life (years) | Less than 1 year | 1 year | 2 years | 2 years |
|  Expected dividend yield | 0.00% | 0.00% | 0.00% | 0.00% |
|  Risk-free interest rate | 2.66% | 1.38% | 1.47% | 1.43% |

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| | | | |
|:---|:---|:---|:---|
|  | Year ended 31 December 2021 | Year ended 31 December 2021 | Year ended 31 December 2021 |
|  | LTIP<br> 1 Dec 2021 | LTIP<br> 1 Dec 2021 | DSA<br> 26 Oct 2021 |
|  Share price at grant (pence) | 1699.0 | 1699.0 | 1337.0 |
|  Expected volatility | 34% | 33% | 33% |
|  Contractual life (years) | 3.5 years | 2 years | 3 years |
|  Expected dividend yield | 0.00% | 0.00% | 0.71% |
|  Risk-free interest rate | 0.52% | 0.43% | (0.06)% |

---

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| | | | |
|:---|:---|:---|:---|
|  | Six months ended 31 December 2020 | Six months ended 31 December 2020 | Six months ended 31 December 2020 |
|  | LTIP<br> 7 Dec 2020 | LTIP<br> 7 Dec 2020 | DSA<br> 26 Oct 2020 |
|  Share price at grant (pence) | 1397.0 | 1397.0 | 1435.0 |
|  Expected volatility | 36% | 36% | 35% |
|  Contractual life (years) | 3 years | 2 years | 3 years |
|  Expected dividend yield | 0.00% | 0.00% | 0.71% |
|  Risk-free interest rate | (0.07)% | (0.07)% | (0.06)% |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | Year ended 30 June 2020 | Year ended 30 June 2020 | Year ended 30 June 2020 | Year ended 30 June 2020 | Year ended 30 June 2020 |
| | LTIP<br> 14 Nov 2019 | LTIP<br> 9 Mar 2020 | LTIP<br> 9 Mar 2020 | LTIP<br> 9 Mar 2020 | DSA<br> 25 Oct 2019 |
|  Share price at grant (pence) | 1245.0 | 1157.0 | 1157.0 | 1157.0 | 1152.0 |
|  Expected volatility | 30% | 37% | 35% | 31% | 30% |
|  Contractual life (years) | 3 years | 1 year | 2 years | 3 years | 3 years |
|  Expected dividend yield | 0.82% | 0.88% | 0.88% | 0.88% | 0.88% |
|  Risk-free interest rate | 0.47% | 0.17% | 0.11% | 0.09% | 0.44% |

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The volatility of the options is based on the average of standard deviations of historical daily continuous returns on Abcam plc shares, looking back over the same period as the expected life of the option. The dividend yield is based on Abcam plc's actual dividend yield in the past. The risk-free rate is the yield on UK government gilts at each date of grant.

LTIP: All awards are subject to achievement of the performance conditions and can be exercised up to ten years after the grant date. Save as permitted in the LTIP rules, awards lapse on an employee leaving the Company.

DSA: For those employees entitled to participate in the annual bonus plan, a portion of the bonus is awarded in the form of shares for which there is a compulsory holding period of two years and a requirement for continued employment before these fully vest to the employees (deferred shares). The number of deferred shares granted is dependent on certain performance criteria, comprising a one-year profit target and achievement of strategic and personal objectives.

Share award plans: PGIP

In Summer 2021, the Company approved a new share scheme (Profitable Growth Incentive Plan) which aims to align the reward to shareholders and incentivize key management employees & the executive directors to

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deliver the revenue growth ambition underpinned by ROCE. Upon vesting in April 2025, and subject to certain performance conditions being met, vested shares will be released as soon as practicable and will expire 30 days from the vesting date. Certain awards within the PGIP are subject to tranche vesting with 25% of vested shares released immediately; 25% after six months; 25% after 12 months; and 25% after 18 months.

---

| | | |
|:---|:---|:---|
|  | Year ended<br> 31 December<br> 2022<br> Number | Year ended<br> 31 December<br> 2021<br> Number |
|  Outstanding at beginning of year / period | 4873002 |  |
|  Granted | 1116996 | 4875141 |
|  Forfeited | (137025) | (2139) |
|  Outstanding at end of year / period | 5852973 | 4873002 |
|  Number of options exercisable at end of year / period |  |  |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | Year ended<br> 31 December<br> 2022 | Year ended<br> 31 December<br> 2022 | Year ended<br> 31 December<br> 2021 | Year ended<br> 31 December<br> 2021 |
|  Weighted average fair value of awards granted |  | 1,382.0p |  | 1,360.4p |
|  Weighted average remaining contractual life |  | 2.6 years |  | 3.4 years |

---

Fair values of the awards with a performance condition based on non-market conditions, for example EPS, are calculated using the Black-Scholes model. The inputs into the models for awards granted in the current and prior periods were as follows:

---

| | |
|:---|:---|
|  | Year ended 31 December 2022 |
|  | PGIP<br> 14-Sep 2022 |
|  Share price at grant (pence) | 1,383.0p |
|  Expected volatility | 34% |
|  Contractual life (years) | 3 years |
|  Expected dividend yield | 0.0% |
|  Risk-free interest rate | 3.0% |

---

---

| | | |
|:---|:---|:---|
| | Year ended 31 December 2021 | Year ended 31 December 2021 |
| | PGIP<br> 14 July 2021 | PGIP<br> 14 Sep 2021 |
|  Share price at grant (pence) | 1341.0 | 1508.0 |
|  Expected volatility | 34% | 35% |
|  Contractual life (years) | 4 years | 4 years |
|  Expected dividend yield | 0.00% | 0.00% |
|  Risk-free interest rate | 0.24% | 0.27% |

---

The inputs to the Black-Scholes model, such as expected volatility, are based on the same calculation as those for other schemes. All awards are subject to achievement of the performance conditions and can be exercised over the following five years. Same as permitted in the LTIP rules, awards lapse on an employee leaving the Company.

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All employee share schemes: AbShare, SIPs and Abcam Growth Plan

Abcam Growth Plan (AGP)

In Spring 2022, the Company launched a share scheme (Abcam Growth Plan) under which all employees globally, excluding those eligible for the PGIP, were eligible to receive shares. The scheme is split in to two components; an annual incentive and a strategic incentive. Participants can receive up to 10% of their salary annually under the annual incentive where annual customer focused and financial targets are met over the three year period of the scheme. The strategic incentive pays out at up to 30% of salary, where the Group's growth targets are achieved by the end of the 2024 financial year.

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| | |
|:---|:---|
|  | Year ended<br> 31 December<br> 2022<br> Number |
|  Outstanding at beginning of year / period |  |
|  Granted | 1765344 |
|  Forfeited | (223127) |
|  Exercised |  |
|  Outstanding at end of year / period | 1542217 |
|  Number of options exercisable at end of year / period |  |

---

---

| | | |
|:---|:---|:---|
|  | Year ended<br> 31 December<br> 2022 | Year ended<br> 31 December<br> 2022 |
|  Weighted average fair value of awards granted |  | 1,398.6p |
|  Weighted average share price at date of exercise |  |  |
|  Weighted average remaining contractual life |  | 1.9 years |

---

Fair values of the awards with a performance condition based on non-market conditions, for example EPS, are calculated using the Black-Scholes model. The inputs into the models for awards granted in the current and prior periods were as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | Year ended 31 December 2022 | Year ended 31 December 2022 | Year ended 31 December 2022 | Year ended 31 December 2022 |
|  | AGP<br>01 Jul 2022 | AGP<br>01 Jul 2022 | AGP<br>29 Mar 2022 | AGP<br>29 Mar 2022 |
|  Share price at grant (pence) | 1,202.0p | 1,202.0p | 1,406.0p | 1,406.0p |
|  Expected volatility | 32% | 34% | 28% | 35% |
|  Contractual life (years) | 1 year | 3 years | 1 year | 3 years |
|  Expected dividend yield | 0.0% | 0.0% | 0.0% | 0.0% |
|  Risk-free interest rate | 1.6% | 1.7% | 1.2% | 1.4% |

---

As at 31 December 2022, it was not expected that the performance criteria for the annual awards issued under the AGP in 2022 would be met. Accordingly, a charge was not recognised in relation to these awards in the year ended 31 December 2022.

------

AbShare

In Autumn 2018, the Company launched a share scheme (AbShare) where all employees globally, excluding Executive Directors, are eligible to participate. Each employee who participates is required to contribute 5% of their salary spread across three years (therefore equating to 1.67% per annum). Upon vesting in November 2021, and subject to certain performance conditions being met, the funds contributed have been used as consideration for the issue of the predetermined number of shares to the employee with the Company issuing a further 10 shares for each share issued.

---

| | | | |
|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2021<br> Number | Six months<br> ended<br> 31 December<br> 2020<br> Number | Year<br> ended<br> 30 June<br> 2020<br> Number |
|  Outstanding at beginning of year / period | 2001505 | 1723183 | 1564167 |
|  Granted | 110633 | 345510 | 348425 |
|  Forfeited | (306059) | (65802) | (187715) |
|  Exercised | (1806079) | (1386) | (1694) |
|  Outstanding at end of year / period |  | 2001505 | 1723183 |
|  Number of options exercisable at end of year / period |  |  |  |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2021 | Year<br> ended<br> 31 December<br> 2021 | Six months<br> ended<br> 31 December<br> 2020 | Six months<br> ended<br> 31 December<br> 2020 | Year<br> ended<br> 30 June<br> 2020 | Year<br> ended<br> 30 June<br> 2020 |
|  Weighted average fair value of awards granted |  | 1,280.2p |  | 1,288.9p |  | 1,137.8p |
|  Weighted average remaining contractual life |  |  |  | 0.9 years |  | 1.4 years |

---

Fair values of the awards are calculated using the Black-Scholes model. The inputs into the models for awards granted in the current year were as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | Year<br>ended<br>31 December<br>2021 | Six months<br>ended<br>31 December<br>2020 | Year<br>ended<br>30 June<br>2020 |
|  Share price at grant (pence) | 1345.0 | 1397.0 | 1244.6 |
|  Expected volatility | 32% | 39% | 34% |
|  Contractual life (years) | 0.5 years | 1 year | 2 years |
|  Expected dividend yield | 0.00% | 0.00% | 0.82% |
|  Risk-free interest rate | 0.00% | (0.06)% | 0.52% |

---

The inputs to the Black-Scholes model, such as expected volatility, are based on the same calculation as those for other schemes.

SIP

Up until October 2018, all UK-based employees were eligible to participate in the SIP whereby employees could purchase shares in the Company. These shares are referred to as Partnership Shares and are held in trust on behalf of the employee. For every Partnership Share bought by the employee up to a limit of £1,800 per tax year the Company will give the employee one share (Matching Shares), provided the employee remains employed by the Company for a period of at least three years.

Employees must withdraw their shares from the plan upon leaving the Company and will not be entitled to the Matching Shares if they leave within three years of purchasing the Partnership Shares.

In addition to this, also up until October 2018, the Company also awarded shares to employees (Free Shares) with a value of up to £3,600 per tax year. There are no vesting conditions attached to the Free Shares, other than being continuously employed by the Company for three years from the date of grant.

The fair value of Matching Shares and Free Shares is determined as the market value of the shares at the date of grant. No valuation model is required to calculate the fair value of awards under the SIP. The fair value of

------

an equity-based payment under the SIP is the face value of the award on the date of grant because the participants are entitled to receive the full value of the shares and there are no market-based performance conditions attached to the awards.

---

| | | | | |
|:---|:---|:---|:---|:---|
| | Number of free shares | Number of free shares | Number of free shares | Number of free shares |
| | Year<br>ended<br>31 December<br>2022<br>Number | Year<br>ended<br>31 December<br>2021<br>Number | Six months<br>ended<br>31 December<br>2020<br>Number | Year<br>ended<br>30 June<br>2020<br>Number |
| Outstanding at beginning of year / period | 232390 | 273852 | 302023 | 351187 |
| Forfeited |  | (493) | (657) | (7423) |
| Exercised | (60877) | (40969) | (27514) | (41741) |
| Outstanding at end of year / period | 171513 | 232390 | 273852 | 302023 |
| Number of options exercisable at end of year / period | 171513 | 232390 | 273852 | 215268 |

---

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | Number of matching shares | Number of matching shares | Number of matching shares | Number of matching shares |
|  | Year<br> ended<br> 31 December<br> 2022<br> Number | Year<br> ended<br> 31 December<br> 2021<br> Number | Six months<br> ended<br> 31 December<br> 2020<br> Number | Year<br> ended<br> 30 June<br> 2020<br> Number |
| Outstanding at beginning of year / period | 59890 | 71381 | 77534 | 88539 |
| Forfeited |  | (692) | (597) | (2203) |
| Exercised | (16223) | (10799) | (5556) | (8802) |
| Outstanding at end of year / period | 43667 | 59890 | 71381 | 77534 |
| Number of options exercisable at end of year / period | 43667 | 59890 | 71381 | 72009 |

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Other awards: NED share award

A component of the Non-Executive Directors' remuneration is delivered as a fixed number of fully paid ordinary shares in the first open period following the announcement of annual results of the financial year to which the award relates.

28. Retirement benefit schemes

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| | | | | |
|:---|:---|:---|:---|:---|
|  | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
| Total charge to income statement in respect of defined contribution schemes | 7.2 | 6.5 | 2.8 | 4.5 |

---

Defined contribution schemes

The UK-based employees of the Group have the option to join a defined contribution pension scheme managed by a third party pension provider. For each member the Company contributes a fixed percentage of salary to the scheme.

Employees of the Group's subsidiaries in the US, Japan, China and Hong Kong are members of state-managed retirement benefit schemes. Depending on location, the subsidiaries are required to contribute a specified percentage of payroll costs to the retirement benefit schemes to fund the benefits.

As at 31 December 2022, contributions of £0.2m (31 December 2021: £1.1m; 31 December 2020: £0.5m; 30 June 2020: £0.5m) due in respect of the current reporting period had not been paid over to the schemes.

29. Business combinations

Year ended 31 December 2022

No business combinations were undertaken during the period.

------

During the 12 month period after the BioVision acquisition was completed, several measurement period adjustments were identified for new information obtained about facts and circumstances that existed as of the acquisition date.

Following the completion of the acquisition, Abcam successfully claimed $18m (£13.1m at the exchange rate on the date of acquisition) from the escrow account established for the purpose of the BioVision acquisition following the discovery of previously undisclosed contractual terms with a significant customer of BioVision. A reduction in consideration of $18m (£13.1m) has been recognised in relation to this, as well as a corresponding liability for exiting this contract

(which has been paid during the 12 months ended 31 December 2022). A deferred tax asset of $3.8m (£2.7m at the exchange rate on the date of acquisition) which has also been recognised on the opening balance sheet of BioVision in relation to this transaction.

In addition to the above, other liabilities totalling $2.0m (£1.4m at the exchange rate on the date of acquisition) were identified during the year after the acquisition was completed. The total adjustment to goodwill was $1.8m (£1.3m at the exchange rate on the date of acquisition).

As at 31 December 2021, there was a claim for a £1.1m adjustment to the consideration, which was adjustable for certain net working capital balances for which an estimate had been provided at the acquisition completion date. This was recognised as a receivable on the Group's consolidated balance sheet as at 31 December 2021 and the claim was resolved and the cash for this was received during the 12 months ended 31 December 2022.

Year ended 31 December 2021

BioVision

On 26 October 2021, Abcam US Group Holdings Inc, a subsidiary of Abcam Plc, acquired 100% of the issued share capital of NKY Biotech US, Inc from Boai NKY Biotech Co. Ltd for initial total cash consideration of $349.9 million (£253.8 million) and acquisition expenses of £7.8 million. NKY Biotech US, Inc has one wholly owned subsidiary, BioVision Inc (collectively 'BioVision'). BioVision is a leading provider of biochemical and cell- based assays for biological research. It also develops, produces, and sells a wide portfolio of other products including recombinant proteins, antibodies, enzymes, and biochemical compounds.

The acquisition accelerates accelerate Abcam's strategic ambitions within the adjacent biochemical and cellular assay market and aligns with existing areas of research focus including oncology, immuno-oncology, neuroscience, and epigenetics.

------

The fair value of identifiable net assets acquired was as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | Provisional Fair<br> Values<br> £m | Adjustment<br> £m | Final Fair<br> Value<br> £m |
| Non-current assets |  |  |  |
| Intangible assets | 80.6 |  | 80.6 |
| Property, plant and equipment | 0.8 |  | 0.8 |
| Right-of-use assets | 1.9 |  | 1.9 |
| Deferred tax asset | 0.3 | 2.7 | 3.0 |
| Current assets |  |  |  |
| Inventory | 8.1 |  | 8.1 |
| Trade and other receivables | 3.3 |  | 3.3 |
| Cash and cash equivalents | 10.0 |  | 10.0 |
| Current liabilities |  |  |  |
| Trade and other payables | (2.3) | (14.5) | (16.8) |
| Lease liabilities | (1.7) |  | (1.7) |
| Non-current liabilities |  |  |  |
| Deferred tax liabilities | (23.6) |  | (23.6) |
| Lease liabilities | (0.6) |  | (0.6) |
| Total identifiable assets acquired | 76.8 | (11.8) | 65.0 |
| Goodwill | 177.0 | (1.3) | 175.7 |
| Total consideration | 253.8 | (13.1) | 240.7 |

---

---

| | |
|:---|:---|
|  | Final Fair<br>Value<br>£m |
| Consideration |  |
| Total consideration | 240.7 |
| Adjustment for settlement of pre-existing relationship | 1.4 |
| Consideration paid in cash | 242.1 |

---

---

| | |
|:---|:---|
|  | Final Fair<br> Value<br> £m |
| Net cash outflow on acquisition |  |
| Consideration paid in cash | 242.1 |
| Adjustment for settlement of pre-existing relationship | (1.4) |
| Acquired cash and cash equivalents | (10.0) |
| Net cash outflow on acquisition | 230.7 |
| Foreign exchange differences between acquisition and payment date | (2.0) |
| Consideration per cash flow | 228.7 |

---

Prior to acquisition, BioVision was a supplier of products to Abcam and there was a trading balance of £1.4m outstanding at the acquisition. As such, the consideration and total identifiable net assets acquired have been adjusted to reflect this pre-existing relationship, which was effectively settled upon acquisition.

The goodwill recognized is attributable to the expertise of the assembled workforce, potential new technology and products and leveraging Abcam's global channels to market.

Since the date of acquisition to 31 December 2021 the acquisition contributed £2.6m to the Group's revenue and a loss before tax of £2.6m. The effect on adjusted profit before tax was £1.4m which is before taking into account the effects of the amortization of acquisition intangibles and amortization of fair value adjustments.

Had BioVision been acquired on 1 January 2021, the Group revenue would have been £331.6m and the profit before tax would have been £9.8m.

30. Related party transactions

Remuneration of Directors and key management personnel

------

Key management personnel comprises the Non-Executive Directors, the Executive Directors and the Executive Leadership Team.

The Non-Executive Directors' fees represent amounts received in cash and an element receivable in shares.

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | Directors' remuneration | Directors' remuneration | Directors' remuneration | Directors' remuneration | Key management personnel<br> (including Directors) | Key management personnel<br> (including Directors) | Key management personnel<br> (including Directors) | Key management personnel<br> (including Directors) |
| | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m | Year<br> ended<br> 31 December<br> 2022<br> £m | Year<br> ended<br> 31 December<br> 2021<br> £m | Six months<br> ended<br> 31 December<br> 2020<br> £m | Year<br> ended<br> 30 June<br> 2020<br> £m |
| Short-term employee benefits and fees | 2.0 | 2.9 | 1.4 | 1.6 | 4.1 | 5.0 | 2.4 | 4.3 |
| Post-employment benefits | 0.1 | 0.1 |  | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 |
| Share-based payments | 7.4 | 4.8 | 0.7 | 1.8 | 16.0 | 8.2 | 0.8 | 2.3 |
|  | 9.5 | 7.8 | 2.1 | 3.5 | 20.2 | 13.3 | 3.3 | 6.8 |

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Directors' transactions

During the year ended 31 December 2022, the Group made purchases from companies related to Directors of £nil (year ended 31 December 2021: £nil; 6 months ended 31 December 2020: £nil; year ended 30 June 2020: £nil) of which the balance outstanding at 31 December 2022 was £nil (31 December 2021: £nil; 31 December 2020: £nil; 30 June 2020: £nil). Total sales to companies related to the Directors was less than £0.1m (year ended 31 December 2021: £0.1m; 6 months ended 31 December 2020: less than £0.1m; year ended 30 June 2020: less than £0.1m), of which less than £0.1m (31 December 2021: less than £0.1m; 31 December 2020: less than £0.1m; 30 June 2020: less than £0.1m) was outstanding as at 31 December 2022.

31. Post balance sheet events

On 7 March 2023, the Group replaced its existing RCF which was due to expire on January 31 2024 with a new RCF for an amount of £300m.

In February 2019, the Group entered into an RCF with a syndicate of banks for £200m with an additional £100m accordion option. The Group drew down £120m on the RCF to fund the BioVision acquisition in October 2021, and the RCF remained drawn in this amount as of December 31, 2022.

The new RCF has a term of 4 years, with the option to extend for one further year, for an amount of £300m and with no accordion option. The amount of £120m drawn down on the previous RCF was rolled forward into the new facility.

Borrowings under both the existing facility and the new facility are unsecured but are guaranteed by certain of our material subsidiary companies.

## Exhibit 2.3

**Exhibit 2.3** 

**DESCRIPTION OF THE REGISTRANT'S SECURITIES** 

**REGISTERED PURSUANT TO SECTION 12 OF THE** 

**SECURITIES EXCHANGE ACT OF 1934, AS AMENDED** 

Abcam plc has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"): our ordinary shares, nominal value £0.002 per share. Our American Depositary Shares, or ADSs, are exempt from registration under Section 12(b) of the Exchange Act pursuant to Rule 12a-8 thereunder. References herein to "we," "us," "our" and the "Company" refer to Abcam plc and not to any of its subsidiaries.

**Description of Share Capital and Articles of Association** 

The following is a summary of certain provisions of our articles of association ("Articles of Association"). These summaries may not contain all of the information that is important to you and should be read in conjunction with our Articles of Association, which have been publicly filed with the U.S. Securities and Exchange Commission ("SEC").

***Objects***

Our objects do not restrict the manner in which we conduct our business as described herein.

***Share Rights***

Without prejudice to any special rights conferred on shareholders or holders of a class of shares, the Company may, by ordinary resolution, determine that any shares are allotted with special rights, privileges or restrictions.

***Voting Rights***

Subject to the provisions of the Companies Act 2006 and any restrictions imposed in our Articles of Association and any rights or restrictions attached to any class of shares of our share capital, on a resolution, on a show of hands:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• every shareholder present in person shall have one vote;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• each proxy present who has been duly appointed by one or more shareholders entitled to vote on the resolution has
one vote unless the proxy has been appointed by more than one shareholder entitled to vote on the resolution in which case: (i) where the proxy has been instructed by one or more of such members to vote for the resolution and by one or more of
such members to vote against the resolution the proxy has one vote for and one vote against the resolution; or (ii) where the proxy has been instructed by one or more of such members as to how he should vote on the resolution and all those
instructions are to vote the same way, and one or more other members have given the proxy discretion as to how to vote, he may cast one vote "for" or one vote "against" in accordance with those instructions and may cast a second
discretionary vote the other way; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• each person authorized by a corporation to exercise voting powers on behalf of the corporation is entitled to
exercise the same voting powers as the corporation would be entitled to unless a corporation authorizes more than one person, in which case: (i) if more than one person authorized by the same corporation purport to exercise the power to vote on
a show of hands in respect of the same shares in the Company and exercise the power in the same way as each other, the power is treated as exercised in that way; or (ii) if more than one person authorized by the same corporation purports to
exercise the power to vote on a show of hands in respect of the same shares in the Company, and they do not exercise the power in the same way as each other, the power is treated as not exercised.

Subject to the provisions of the Companies Act 2006 and any restrictions imposed by our Articles of Association and any rights or restrictions attached to any class of shares of our share capital, on a vote on a resolution on a poll, every shareholder present shall have one vote for every ordinary share in our share capital held by him or his appoint, or and if entitled to more than one vote need not, if he votes, use all his votes or cast all his votes in the same way.

------

At any general meeting, a resolution put to the vote of the meeting shall be decided on a show of hands unless a poll is (before or on the declaration of the result of show of hands) demanded by the chairman of the meeting or by those shareholders entitled under the provisions of the Companies Act 2006 to demand a poll. Subject to the provisions of the Companies Act 2006, as described below in "Differences in Corporate Law—Voting Rights" below, a poll may be demanded by:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• a chairman of the meeting;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• at least five shareholders present in person or by proxy and entitled to vote;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• any shareholder(s) present in person or by proxy and representing in the aggregate not less than 10% of the total
voting rights of all shareholders having the right to attend and vote at the meeting (excluding the shares held in treasury); or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• any shareholder(s) present in person or by proxy and holding shares conferring a right to attend and vote at the
meeting on which there have been paid up sums in the aggregate equal to not less than 10% of the total sums paid up on all shares conferring that right (excluding the shares held in treasury).

*Restrictions on Voting* 

Subject to the provisions of the Companies Act 2006, no shareholder is, unless the directors otherwise determine, entitled (save as a proxy for another member) to be present or vote at any general meeting either personally or by proxy or to exercise any other right in relation to meetings of the Company in respect of either the share he holds or (with effect from allotment) of any additional shares allotted in respect of the share which is the subject of a notice under Article 85 of our Articles of Association (including without limitation any share allotted under a rights issue or capitalization issue) if:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• any call or other sum presently payable by him to the Company in respect of the shares remained unpaid;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• he or any other person who appears to be interested in the shares has been served, under section 793 of this
Companies Act 2006 concerning the disclosure of interests in voting shares, with a notice which: (i) lawfully requires the provision of information regarding the shares to the Company within the period specified in such notice (being not less
than 14 days from the date of service of such notice) (ii) contains a warning of the consequences of failing to comply with such notice; and (iii) (whether or not he is aware of the identity of the beneficial owner(s) of the share) he or such
other person is in default in complying with such notice; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• he has been duly served with a notice which: (i) requires him to provide or to procure that there is
provided to the Company within the period specified in the notice (being not less than 14 days from the service of notice), a statement in writing authenticated by him or any other person or persons stating that he (if the statement is authenticated
by him) or (as the case may be) the other person or persons who has/have authenticated the statement is/are the beneficial owner(s) of the shares and providing any additional information regarding the shares; (ii) contains a warning of the
consequences under Article 85 of our Articles of Association of failing to comply with such notice; and (iii) (whether or not he is aware of the identity of the beneficial owner(s) of the share) he is in default in complying with such notice.

The board may from time to time make calls upon the shareholders in respect of any money unpaid on their shares, and each shareholder shall (subject to at least seven days' notice specifying the time and place of payment) be liable to pay at the time and place so specified the amount called on his shares.

*Dividends* 

We may, by ordinary resolution of shareholders, declare dividends. No dividend will be payable except out of profits of the Company available for distribution in accordance with the provisions of the Companies Act 2006, or in excess of the amount recommended by the directors. If, in the opinion of the directors, the profit of the Company justifies such payments, the directors may: (i) pay the fixed dividends on any class of shares carrying a fixed dividend expressed to be payable on fixed dates on the half-yearly or other dates prescribed for payment; and (ii) pay interim dividends of such amounts and on such dates as they think fit.

Subject to the provisions of the Companies Act 2006 and except as otherwise provided by our Articles of Association or by the rights or privileges attached to any shares carrying a preferential or special rights to dividends, Company profits will be used to pay dividends on shares and all dividends shall be declared and paid according to the amounts paid up on the shares and shall be apportioned and paid pro rata according to the amounts paid up on the shares during any part of the period in respect of which the dividend is paid.

------

No dividend or other moneys payable by us on or in respect of any share shall bear interest against us. Any dividend unclaimed or retained in accordance with our Articles of Association after a period of 12 years from the date such dividend became due for payment will be forfeited and revert to us.

Dividends may be declared or paid in any currency, and the board may agree with a shareholder that dividends declared or that become due on his shares in one currency will be paid or satisfied in another currency, the basis of conversion to be applied, how and when the amount to be paid in the other currency will be calculated and paid, and whether the Company or any other person will bear the costs of conversion.

With the sanction of an ordinary resolution of the Company, all or any part of the dividend can be paid by the distribution of specific assets and the directors must give effect to such ordinary resolution. With the sanction of an ordinary resolution of the Company, the directors may offer any holders of ordinary shares the right to elect to receive in lieu of a dividend an allotment of ordinary shares credited as fully paid up, instead of or part of a cash dividend, subject to such exclusions or arrangements as the board may deem necessary or expedient.

The directors may deduct from any dividend or other moneys payable to any member on or in respect of a share any money payable by him to the Company on account of calls or otherwise in relation to shares in the Company.

*Change of Control* 

There is no specific provision in our Articles of Association that would have the effect of delaying, deferring or preventing a change of control.

*Distributions on Winding Up* 

If the Company is wound up (whether the liquidation is voluntary, under supervision or by the court) the liquidator may, with the authority of a special resolution, divide among the shareholders whose names are entered on the register of members of the Company at the date of winding up, in specie or kind the whole or any part of the assets of the Company. Whether or not the assets consist of property of one kind or of different kinds the liquidator can set such value as he deems fair upon any one or more class or classes of property and can determine how such division is carried out as between such members or different classes of members. If any such division shall be other than in accordance with the existing rights of such members, every member shall have the same right of dissent and other ancillary rights as if the resolution were a special resolution passed in accordance with section 110 of the Insolvency Act 1986. The liquidator may also, with the authority of a special resolution, vest any part of the assets in trustees upon such trusts for the benefit of such members as the liquidator thinks fit. The liquidation of the Company may then be closed and the Company dissolved, but no contributory shall be compelled to accept any shares or other property in respect of which there is a liability.

*Variation of Rights* 

Subject to the provisions of the Companies Act 2006, whenever the share capital is divided into different classes of shares, all or any of the rights and restrictions attached to any class (unless otherwise provided by the terms of issue of the shares of that class) may, whether or not the Company is being wound up, be modified, varied, extended, abrogated or surrendered either in the manner provided by such rights or (in the absence of such provision) with the written consent of the shareholders of at least three-fourths in nominal value of the issued shares of that class (excluding any shares held as treasury shares) or by special resolution passed at a separate general meeting of the holders of such shares. The Companies Act 2006 provides a right to object to the variation of the share capital by the shareholders who did not vote in favor of the variation. Should an aggregate of 15% of the shareholders of the issued shares in question apply to the court to have the variation cancelled, the variation shall have no effect unless and until it is confirmed by the court.

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*Alteration to Share Capital* 

We may, by ordinary resolution of shareholders, consolidate and divide all or any of our share capital into shares of larger nominal value than our existing shares, or sub-divide our shares or any of them into shares of a smaller nominal value. We may, by special resolution of shareholders, confirmed by the court, reduce our share capital or any capital redemption reserve or any share premium account in any manner authorized by the Companies Act 2006. We may redeem or purchase all or any of our shares as described in "—Other U.K. Law Considerations—Purchase of Own Shares."

*Preemption Rights* 

In certain circumstances, our shareholders may have statutory preemption rights under the Companies Act 2006 in respect of the allotment of new shares as described in "—Preemptive Rights" and "—Differences in Corporate Law—Preemptive Rights."

***Transfer of Shares***

Any certificated shareholder may transfer all or any of his shares by an instrument of transfer in writing in any usual or common form or in any other manner approved by the board. Any written instrument of transfer shall be executed by or on behalf of the transferor and (in the case of a partly paid share) the transferee.

All transfers of uncertificated shares shall be made in accordance with and subject to the provisions of the Uncertificated Securities Regulations 2001 and the facilities and requirements of its relevant system. The Uncertificated Securities Regulations 2001 permit shares to be issued and held in uncertificated form and transferred by means of a computer-based system.

The board may decline to register any transfer of any share held in certificated form:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• if the Company has a lien on a partly paid share unless to do so would prevent dealings in partly paid shares
from taking place on an open and proper basis;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• if a notice has been duly served in respect of a share pursuant to section 793 of the Companies Act 2006 and:
(i) the share or shares that were the subject of that notice represented in aggregate at least 0.25 percent of that class of shares (calculated exclusive of any treasury shares of that class); and (ii) the person or persons on whom
the notice was served failed to comply with the requirements of the notice within the period for compliance specified in the notice (being not less than 14 days from the date of service of the notice) and remains in default in complying with the
notice, unless the transfer in question is to a bona fide unconnected third party such as a sale through a recognized investment exchange or an overseas exchange or as a result of an acceptance of a takeover offer; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• if the transfer is of a share or shares (whether fully paid or not) in favor of more than 4 persons jointly.

If the board declines to register a transfer it shall, as soon as practicable and in any event within two months after the date on which a transfer form, a letter of allotment (if applicable) is lodged, send to the transferee notice of the refusal, together with reasons for the refusal.

***Shareholder Meetings***

*Annual General Meetings* 

In accordance with the Companies Act 2006, we are required in each year to hold an annual general meeting in addition to any other general meetings in that year and to specify the meeting as such in the notice convening it. The annual general meeting shall be convened whenever and wherever the board sees fit, subject to the requirements of the Companies Act 2006, as described below in "—Differences in Corporate Law—Annual General Meeting" and "—Differences in Corporate Law—Notice of General Meetings."

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*Notice of General Meetings* 

The arrangements for the calling of general meetings are described below in "—Differences in Corporate Law—Notice of General Meetings."

*Quorum of General Meetings* 

No business shall be transacted at any general meeting unless a quorum is present. At least two shareholders present in person or by proxy and entitled to vote shall be a quorum for all purposes. If within 15 minutes from the time appointed for the holding of a general meeting (or such longer time as the chairman of the meeting may decide) a quorum is not present, the meeting, if convened on the requisition of members, shall be dissolved. In any other case it shall be adjourned to a day (at least 10 clear days after the meeting), time and place decided by the chairman. If at an adjourned meeting a quorum is not present within 15 minutes from the time appointed for holding the meeting, the member or members present in person or by proxy or (in the case of a corporation) by a representative and entitled to vote upon the business to be transacted shall be a quorum and shall have power to decide upon all matters that could properly have been disposed of at the meeting from which the adjournment took place.

*Class Meetings* 

The provisions in our Articles of Association relating to general meetings apply to every separate general meeting of the holders of a class of shares except that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the quorum for such class meeting shall be two holders in person or by proxy representing not less than one-third in nominal value of the issued shares of the class (excluding any shares held in treasury);

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• at the class meeting, a holder of shares of the class present in person or by proxy may demand a poll and shall
on a poll be entitled to one vote for every share of the class held by him; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• if at any adjourned meeting of such holders a quorum is not present at the meeting, one holder of shares of the
class present in person or by proxy at an adjourned meeting constitutes a quorum.

***Directors***

*Number of Directors* 

We may not have less than three and not more than 12 directors on the board of directors.

*Appointment of Directors* 

A single resolution for the appointment of two or more persons as directors is void unless a resolution that it shall be moved has first been agreed to by the meeting without any vote being given against it.

At any general meeting, no person other than a director retiring at the meeting shall, unless recommended by the directors for election, be eligible for appointment as a director unless not less than 28 nor more than 35 days before the date of the meeting: (i) a notice in writing, authenticated by a member (other than the person to be proposed) who is qualified to attend and vote at that meeting, containing his intention to propose the person for election; and (ii) a notice in writing authenticated by the person proposed as a director of his willingness to be elected; have both been left at the registered office or sent to the Company secretary.

Without prejudice to the power to appoint any person to be a director by shareholder resolution, the board has power to appoint any person to be a director, either to fill a casual vacancy or as an addition to the existing board but so that the total number of directors does not exceed the maximum number fixed by or in accordance with our Articles of Association.

Any director appointed by the board shall retire from office at the next annual general meeting. Such a director is eligible for election at that meeting but shall not be taken into account in determining the directors or the number of directors who are to retire by rotation at such meeting.

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*Rotation of Directors* 

At each annual general meeting, the following directors will retire from office and be eligible for re-election:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• any director who was not elected or re-elected at either of the two
preceding annual general meetings and any director who wishes to retire and offer himself for re-election (whether by reason of the U.K. Corporate Governance Code or for any other reason); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• such number of the directors (excluding any director who is required to retire under our Articles of Association)
as would, when added to the number of directors (if any) retiring in accordance with the above bullet point represent one third of the directors. If one third is not a whole number then the number of directors to retire is the number nearest to one
third.

If at any annual general meeting the total number of directors to be considered for retirement by rotation is less than three and the one third calculation above would result in a number which is less than one, then: (i) if the total number is two, one of those directors shall retire; and (ii) if the total number is one, that director shall retire.

The directors to retire on each occasion shall include (so far as necessary to obtain the number required) any director who wishes to retire and not offer himself for re-election. Any further directors to retire shall be those of the other directors who are subject to retirement by rotation for the purposes of the meeting in question and who have at the date of the meeting been longest in office since their last re-election or appointment. In the case of persons who became or were last re-elected directors on the same day those to retire shall (unless they otherwise agree among themselves) be determined by lot.

A director who retires at the annual general meeting shall be eligible for re-election.

The shareholders may, at the meeting at which a director retires, fill the vacated office by electing a person and in default the retiring director shall, if willing to continue to act, be deemed to have been re-elected, unless at such meeting it is expressly resolved not to fill such vacated office or unless a resolution for the re-election of such director shall have been put to the meeting and lost or unless the default is due to the moving of a resolution in contravention of Article 114 of our Articles of Association or unless such director has attained any applicable retiring age.

*Directors' Interests* 

A director may hold any other office or employment with the Company (other than the office of auditor) in conjunction with his office of director for such period and on such terms as the directors may determine. A director or intending director may enter into any contract, arrangement, transaction or proposal with the Company relating to the tenure of any other office or employment. Any such contract, arrangement, transaction or proposal entered into or authorized by the directors cannot be avoided and the director is not liable to account to the Company for any benefit realized from any such contract, arrangement, transaction or proposal by reason of either holding office as a director or because of the fiduciary relationship established by the office if the director has declared his interest in accordance with the Companies Act 2006. In accordance with the Companies Act 2006, a director who is in any way, whether directly or indirectly, interested in a proposed or existing transaction or arrangement with us shall declare the nature of his interest.

In the case of interests arising where a director is in any way, directly or indirectly, interested in (i) a proposed transaction or arrangement with us or (ii) a transaction or arrangement that has been entered into by us and save as otherwise provided by our Articles of Association, such director shall not vote at a meeting of the board or of a committee of the board on any resolution concerning such matter in which he has any interest that conflicts or may conflict with the interests of the Company as defined in Article 102 of our Articles of Association (otherwise than by virtue of his interest in shares, debentures or other securities of, or otherwise in or through, us) unless his interest or duty arises only because the resolution relates to one or more of the following paragraphs:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the giving of any security, guarantee or indemnity in respect of money lent or obligations incurred by him or by
any other person at the request of or for the benefit of the Company or any of its subsidiary undertakings; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the giving of any security, guarantee or indemnity in respect of a debt or obligation of the Company or any of
its subsidiary undertakings for which the director himself has assumed responsibility in whole or in part under a guarantee or indemnity or by the giving of security; or

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the granting of any indemnity or provision of funding pursuant to Article 190 of our Articles of Association
unless the terms of such arrangement confer upon such director a benefit not generally available to any other director; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an offer of shares or debentures or other securities of or by the Company or any of its subsidiary undertakings
for subscription or purchase in which offer he is or is to be or may be entitled to participate as a holder of securities or as an underwriter or sub-underwriter; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• any matters involving or relating to any other company in which he or any person connected with him has a direct
or indirect interest (whether as an officer or shareholder or otherwise), provided that he and any persons connected with him are not to his knowledge the holder (otherwise than as a nominee for the company or any of its subsidiary undertakings) of
or beneficially interested in one percent or more of any class of the equity share capital of such company (or of any third company through which his interest is derived) or of the voting rights available to members of the relevant company (any such
interest being deemed for the purpose of this paragraph to be a material interest in all circumstances); or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• an arrangement for the benefit of the employees of the Company or any of its subsidiary undertakings that does
not award him any privilege or benefit not generally awarded to the employees to whom the arrangement relates; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• the purchase and/or maintenance of any insurance policy for the benefit of directors or for the benefit of
persons including directors.

A director shall not be counted in the quorum present at a meeting in relation to a resolution on which he is not entitled to vote.

If a question arises at a meeting of the board or of a committee of the board as to the right of a director to vote, and such question is not resolved by his voluntarily agreeing to abstain from voting, the question shall be referred to the Chairman of the meeting, and his ruling in relation to any director other than himself shall be final and conclusive except in a case where the nature or extent of the interest of the director concerned has not been fairly disclosed.

*Directors' Fees and Remuneration* 

Each director may be paid his traveling, hotel and other expenses properly incurred in and about the business of the Company, including expenses of attending and returning from meetings of the board or committees of the board or general meetings. Any director who performs special or extra services which in the opinion of the board go beyond the ordinary duties of a director may be paid such extra remuneration as the board or a committee appointed by the board may determine.

An executive director shall receive such remuneration as the board or a committee appointed by the board may determine and may (without limitation) be by way of fixed salary, lump sum, commission on dividends or profits of the Company (or of any other company in which the Company is interested) or other participation in any such profits by any combination of them.

A non-executive director may be paid a fee at such rate as may from time to time be determined by the board.

*Borrowing Powers* 

The board may exercise all the powers to borrow money and to mortgage or charge our undertaking, property and assets and uncalled capital or any part thereof and to issue debentures and other securities, whether outright or as collateral security for any debt, liability or obligation of us or of any third party.

*Indemnity* 

Every director, alternate director, secretary or other officer (other than any person (whether an officer or not) engaged by the Company as auditor) shall be indemnified by the Company against all costs, charges, expenses, losses and liabilities incurred by him in the execution and discharge of his duties or the exercise of his powers or otherwise in relation to or in connection with his duties, powers or office as a director of the Company for any other member of the Group, including any liability which may attach to him in respect of any negligence, default, breach of duty or breach of trust by him in relation to anything done or omitted to be done or alleged to have been done or omitted to be done by him as a director.

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**Other U.K. Law Considerations** 

***Mandatory Purchases and Acquisitions***

Pursuant to Sections 979 to 991 of the Companies Act 2006, where a takeover offer has been made for us and the offeror has acquired or unconditionally contracted to acquire not less than 90% in value of the shares to which the offer relates and not less than 90% of the voting rights carried by those shares, the offeror may give notice to the holder of any shares to which the offer relates which the offeror has not acquired or unconditionally contracted to acquire that he wishes to acquire, and is entitled to so acquire, those shares on the same terms as the general offer. The offeror would do so by sending a notice to the outstanding minority shareholders telling them that it will compulsorily acquire their shares. Such notice must be sent within three months of the last day on which the offer can be accepted in the prescribed manner. The squeeze-out of the minority shareholders can be completed at the end of six weeks from the date the notice has been given, subject to the minority shareholders failing to successfully lodge an application to the court to prevent such squeeze-out any time prior to the end of those six weeks following which the offeror can execute a transfer of the outstanding shares in its favor and pay the consideration to us, which would hold the consideration on trust for the outstanding minority shareholders. The consideration offered to the outstanding minority shareholders whose shares are compulsorily acquired under the Companies Act 2006 must, in general, be the same as the consideration that was available under the takeover offer.

***Sell Out***

The Companies Act 2006 also gives our minority shareholders a right to be bought out in certain circumstances by an offeror who has made a takeover offer for all of our shares. The holder of shares to which the offer relates, and who has not otherwise accepted the offer, may require the offeror to acquire his shares if, prior to the expiry of the acceptance period for such offer, (i) the offeror has acquired or unconditionally agreed to acquire not less than 90% in value of the voting shares, and (ii) not less than 90% of the voting rights carried by those shares. The offeror may impose a time limit on the rights of minority shareholders to be bought out that is not less than three months after the end of the acceptance period. If a shareholder exercises his rights to be bought out, the offeror is required to acquire those shares on the terms of this offer or on such other terms as may be agreed.

***Disclosure of Interest in Shares***

Under our Articles of Association, the directors may in their absolute discretion refuse to register or authorize the registration of the transfer of a share held in certificated form if a notice has been served in respect of a share pursuant to section 793 of the Companies Act concerning the disclosure of interests in voting shares and (i) the share or shares which were the subject of that notice represented in aggregate at least 0.25 percent of that class of shares (calculated exclusive of any treasury shares of that class); and (ii) the person or persons on whom the notice was served failed to comply with the requirements of the notice within the period for compliance specified in the notice (being not less than 14 days from the date of service of the notice) and remains in default in complying with the notice, unless the transfer in question is to a bona fide unconnected third party such as a sale through a recognized investment exchange or an overseas exchange or as a result of an acceptance of a takeover offer.

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***Purchase of Own Shares***

Under English law, a limited company may only purchase its own shares out of the distributable profits of the company or the proceeds of a fresh issue of shares made for the purpose of financing the purchase, provided that they are not restricted from doing so by their articles. A limited company may not purchase its own shares if, as a result of the purchase, there would no longer be any issued shares of the company other than redeemable shares or shares held as treasury shares. Shares must be fully paid in order to be repurchased.

Subject to the above, we may purchase our own shares in the manner prescribed below. We may make a market purchase of our own fully paid shares pursuant to an ordinary resolution of shareholders. The resolution authorizing the purchase must:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• specify the maximum number of shares authorized to be acquired;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• determine the maximum and minimum prices that may be paid for the shares; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• specify a date, not being later than five years after the passing of the resolution, on which the authority to
purchase is to expire.

We may purchase our own fully paid shares other than on a recognized investment exchange pursuant to a purchase contract authorized by resolution of shareholders before the purchase takes place. Any authority will not be effective if any shareholder from whom we propose to purchase shares votes on the resolution and the resolution would not have been passed if he had not done so. The resolution authorizing the purchase must specify a date, not being later than five years after the passing of the resolution, on which the authority to purchase is to expire.

***Distributions and Dividends***

Under the Companies Act 2006, before a company can lawfully make a distribution or dividend, it must ensure that it has sufficient distributable reserves (on a non-consolidated basis). The basic rule is that a company's profits available for the purpose of making a distribution are its accumulated, realized profits, so far as not previously utilized by distribution or capitalization, less its accumulated, realized losses, so far as not previously written off in a reduction or reorganization of capital duly made. The requirement to have sufficient distributable reserves before a distribution or dividend can be paid applies to us and to each of our subsidiaries that has been incorporated under English law.

It is not sufficient that we, as a public company, have made a distributable profit for the purpose of making a distribution. An additional capital maintenance requirement is imposed on us to ensure that the net worth of the company is at least equal to the amount of its capital. A public company can only make a distribution:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• if, at the time that the distribution is made, the amount of its net assets (that is, the total excess of assets
over liabilities) is not less than the total of its called up share capital and undistributable reserves; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• if, and to the extent that, the distribution itself, at the time that it is made, does not reduce the amount of
the net assets to less than that total.

***Exchange Controls***

There are no governmental laws, decrees, regulations or other legislation in the United Kingdom that may affect the import or export of capital, including the availability of cash and cash equivalents for use by us, or that may affect the remittance of dividends, interest or other payments by us to non-resident holders of our ordinary shares or ADSs, other than withholding tax requirements. There is no limitation imposed by English law or in our Articles of Association on the right of non-residents to hold or vote shares.

**Differences in Corporate Law** 

The applicable provisions of the Companies Act 2006 differ from laws applicable to U.S. corporations and their shareholders. Set forth below is a summary of certain differences between the provisions of the Companies Act 2006 applicable to us and the General Corporation Law of the State of Delaware relating to shareholders' rights and protections. This summary is not intended to be a complete discussion of the respective rights.

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| | | |
|:---|:---|:---|
|  | **England & Wales** | **Delaware** |
| **Number of**<br> **Directors** | Under the Companies Act 2006, a public limited company must have at least two directors, and the number of directors may be fixed by or in the manner provided in a company's articles of association, provided that such number does not fall below two directors. | Under Delaware law, a corporation must have at least one director, and the number of directors shall be fixed by or in the manner provided in the bylaws. |
| **Removal of**<br> **Directors** | Under the Companies Act 2006, shareholders may remove a director without cause by an ordinary resolution (which is passed by a simple majority of those voting in person or by proxy at a general meeting) irrespective of any provisions of any service contract the director has with the company, provided 28 clear days' notice of the resolution has been given to the company and its shareholders. On receipt of notice of an intended resolution to remove a director, the company must forthwith send a copy of the notice to the director concerned. Certain other procedural requirements under the Companies Act 2006 must also be followed, such as allowing the director to make representations against his or her removal either at the meeting or in writing. | Under Delaware law, any director or the entire board of directors may be removed, with or without cause, by the holders of a majority of the shares then entitled to vote at an election of directors, except (i) unless the certificate of incorporation provides otherwise, in the case of a corporation whose board of directors is classified, shareholders may effect such removal only for cause, or (ii) in the case of a corporation having cumulative voting, if less than the entire board of directors is to be removed, no director may be removed without cause if the votes cast against his removal would be sufficient to elect him if then cumulatively voted at an election of the entire board of directors, or, if there are classes of directors, at an election of the class of directors of which he is a part. |
| **Vacancies on**<br> **the Board of**<br> **Directors** | Under English law, the procedure by which directors, other than a company's initial directors, are appointed is generally set out in a company's articles of association, provided that where two or more persons are appointed as directors of a public limited company by resolution of the shareholders, resolutions appointing each director must be voted on individually unless a resolution that a single resolution for the appointment of two or more persons as directors has first been agreed to by the meeting without any vote being given against it. | Under Delaware law, vacancies and newly created directorships may be filled by a majority of the directors then in office (even though less than a quorum) or by a sole remaining director unless (i) otherwise provided in the certificate of incorporation or bylaws of the corporation or (ii) the certificate of incorporation directs that a particular class of stock is to elect such director, in which case a majority of the other directors elected by such class, or a sole remaining director elected by such class, will fill such vacancy. |
| **Annual General**<br> **Meeting** | Under the Companies Act 2006, a public limited company must hold an annual general meeting in each six-month period following the company's annual accounting reference date. | Under Delaware law, the annual meeting of stockholders shall be held at such place, on such date and at such time as may be designated from time to time by the board of directors or as provided in the certificate of incorporation or by the bylaws. |
| **General**<br> **Meeting** | Under the Companies Act 2006, a general meeting of the shareholders of a public limited company may be called by the directors.<br> Shareholders holding at least 5% of the paid-up capital of the company carrying voting rights at general meetings (excluding any paid up capital held as treasury shares) can require the directors to call a general meeting, and, if the directors fail to do so within a certain period, may themselves convene a general meeting. | Under Delaware law, special meetings of the stockholders may be called by the board of directors or by such person or persons as may be authorized by the certificate of incorporation or by the bylaws. |

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| | | |
|:---|:---|:---|
|  | **England & Wales** | **Delaware** |
| **Notice of General Meetings** | Under the Companies Act 2006, subject to a company's articles of association providing for a longer period, 21 clear days' notice must be given for an annual general meeting and any resolutions to be proposed at the meeting. Subject to a company's articles of association providing for a longer period, at least 14 clear days' notice is required for any other general meeting. In addition, certain matters, such as the removal of directors or auditors, require special notice, which is 28 clear days' notice. The shareholders of a company may in all cases consent to a shorter notice period, the proportion of shareholders' consent required being 100% of those entitled to attend and vote in the case of an annual general meeting and, in the case of any other general meeting, a majority in number of the members having a right to attend and vote at the meeting, being a majority who together hold not less than 95% in nominal value of the shares giving a right to attend and vote at the meeting. | Under Delaware law, unless otherwise provided in the certificate of incorporation or bylaws, written notice of any meeting of the stockholders must be given to each stockholder entitled to vote at the meeting not less than ten nor more than 60 days before the date of the meeting and shall specify the place, date, hour, and purpose or purposes of the meeting. |
| **Proxy** | Under the Companies Act 2006, at any meeting of shareholders, a shareholder may designate another person to attend, speak and vote at the meeting on their behalf by proxy. | Under Delaware law, at any meeting of stockholders, a stockholder may designate another person to act for such stockholder by proxy, but no such proxy shall be voted or acted upon after three years from its date, unless the proxy provides for a longer period. A director of a Delaware corporation may not issue a proxy representing the director's voting rights as a director. |
| **Preemptive Rights** | Under the Companies Act 2006, "equity securities," being (i) shares in the company other than shares that, with respect to dividends and capital, carry a right to participate only up to a specified amount in a distribution ("ordinary shares") or (ii) rights to subscribe for, or to convert securities into, ordinary shares, proposed to be allotted for cash must be offered first to the existing equity shareholders in the company in proportion to the respective nominal value of their holdings, unless an exception applies or a special resolution to the contrary has been passed by shareholders in a general meeting or the articles of association provide otherwise, in each case in accordance with the provisions of the Companies Act 2006. | Under Delaware law, shareholders have no preemptive rights to subscribe to additional issues of stock or to any security convertible into such stock unless, and except to the extent that, such rights are expressly provided for in the certificate of incorporation. |

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| | | |
|:---|:---|:---|
|  | **England & Wales** | **Delaware** |
| **Authority to Allot** | Under the Companies Act 2006, the directors of a company must not allot shares or grant of rights to subscribe for or to convert any security into shares unless an exception applies or an ordinary resolution to the contrary has been passed by shareholders in a general meeting or the articles of association provide otherwise, in each case in accordance with the provisions of the Companies Act 2006. | Under Delaware law, if the corporation's charter or certificate of incorporation so provides, the board of directors has the power to authorize the issuance of stock. It may authorize capital stock to be issued for consideration consisting of cash, any tangible or intangible property or any benefit to the corporation or any combination thereof. It may determine the amount of such consideration by approving a formula. In the absence of actual fraud in the transaction, the judgment of the directors as to the value of such consideration is conclusive. |
| **Liability of Directors and Officers** | Under the Companies Act 2006, any provision, whether contained in a company's articles of association or any contract or otherwise, that purports to exempt a director of a company, to any extent, from any liability that would otherwise attach to him in connection with any negligence, default, breach of duty or breach of trust in relation to the company is void.<br> Any provision by which a company directly or indirectly provides an indemnity, to any extent, for a director of the company or of an associated company against any liability attaching to him in connection with any negligence, default, breach of duty or breach of trust in relation to the company of which he is a director is also void except as permitted by the Companies Act 2006, which provides exceptions for the company to (i) purchase and maintain insurance against such liability; (ii) provide a "qualifying third-party indemnity" (being an indemnity against liability incurred by the director to a person other than the company or an associated company and must not provide any indemnity against, amongst others, any liability in defending criminal proceedings in which he is convicted); and (iii) provide a "qualifying pension scheme indemnity" (being an indemnity against liability incurred in connection with the company's activities as trustee of an occupational pension plan). | Under Delaware law, a corporation's certificate of incorporation may include a provision eliminating or limiting the personal liability of a director to the corporation and its stockholders for damages arising from a breach of fiduciary duty as a director. However, no provision can limit the liability of a director for:<br>• any breach of the director's duty of loyalty to the corporation or its stockholders;<br>• acts or omissions not in good faith or that involve intentional misconduct or a knowing violation of law;<br>• intentional or negligent payment of unlawful dividends or stock purchases or redemptions; or<br>• any transaction from which the director derives an improper personal benefit. |

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| | | |
|:---|:---|:---|
|  | **England & Wales** | **Delaware** |
| **Voting Rights** | Under English law, unless a poll is demanded by the shareholders of a company or is required by the chairman of the meeting or the company's articles of association, shareholders shall vote on all resolutions on a show of hands. Under the Companies Act 2006, a poll may be demanded by (i) not fewer than five shareholders having the right to vote on the resolution; (ii) any shareholder(s) representing not less than 10% of the total voting rights of all the shareholders having the right to vote on the resolution (excluding any voting rights attaching to treasury shares); or (iii) any shareholder(s) holding shares in the company conferring a right to vote on the resolution (excluding any voting rights attaching to treasury shares) being shares on which an aggregate sum has been paid up equal to not less than 10% of the total sum paid up on all the shares conferring that right. A company's articles of association may provide more extensive rights for shareholders to call a poll. | Delaware law provides that, unless otherwise provided in the certificate of incorporation, each stockholder is entitled to one vote for each share of capital stock held by such stockholder. |
|  | Under English law, an ordinary resolution is passed on a show of hands if it is approved by a simple majority (more than 50%) of the votes cast by shareholders present (in person or by proxy) and entitled to vote. If a poll is demanded, an ordinary resolution is passed if it is approved by holders representing a simple majority of the total voting rights of shareholders present, in person or by proxy or in advance, who, being entitled to vote, vote on the resolution. |  |
|  | Special resolutions require the affirmative vote of not less than 75% of the votes cast on a show of hands by shareholders present, in person or by proxy, at the meeting and entitled to vote. If a poll is demanded, a special resolution is passed if it is approved by shareholders representing not less than 75% of the total voting rights of shareholders who, being entitled to vote, vote in person, by proxy or in advance. |  |
| **Shareholder Vote on Certain Transactions** | The Companies Act 2006 provides for schemes of arrangement, which are arrangements or compromises between a company and any class of shareholders or creditors and used in certain types of reconstructions, amalgamations, capital reorganizations or takeovers. These arrangements require: | Generally, under Delaware law, unless the certificate of incorporation provides for the vote of a larger portion of the stock, completion of a merger, consolidation, sale, lease or exchange of all or substantially all of a corporation's assets or dissolution requires: |

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| | | |
|:---|:---|:---|
|  | **England & Wales** | **Delaware** |
|  | • the approval at a shareholders' or creditors' meeting convened by order of the court, of a majority in number of shareholders or creditors representing 75% in value of the capital held by, or debt owed to, the class of shareholders or creditors, or class thereof present and voting, either in person or by proxy; and<br>• the approval of the court. | • the approval of the board of directors; and<br>• approval by the vote of the holders of a majority of the outstanding stock or, if the certificate of incorporation provides for more or less than one vote per share, a majority of the votes of the outstanding stock of a corporation entitled to vote on the matter. |
| **Standard of Conduct for Directors** | Under English law, a director owes various statutory and fiduciary duties to the company, including:<br>• to act in the way he considers, in good faith, would be most likely to promote the success of the company for the benefit of its members as a whole;<br>• to avoid a situation in which he has, or can have, a direct or indirect interest that conflicts, or possibly conflicts, with the interests of the company;<br>• to act in accordance with the company's constitution and only exercise his powers for the purposes for which they are conferred;<br>• to exercise independent judgment;<br>• to exercise reasonable care, skill and diligence;<br>• not to accept benefits from a third party conferred by reason of his being a director or doing, or not doing, anything as a director; and<br>• a duty to declare any interest that he has, whether directly or indirectly, in a proposed or existing transaction or arrangement with the company. | Delaware law does not contain specific provisions setting forth the standard of conduct of a director. The scope of the fiduciary duties of directors is generally determined by the courts of the State of Delaware. In general, directors have a duty to act without self-interest, on a well-informed basis and in a manner they reasonably believe to be in the best interest of the stockholders.<br> Directors of a Delaware corporation owe fiduciary duties of care and loyalty to the corporation and to its stockholders. The duty of care generally requires that a director act in good faith, with the care that an ordinarily prudent person would exercise under similar circumstances. Under this duty, a director must inform himself of all material information reasonably available regarding a significant transaction. The duty of loyalty requires that a director act in a manner he reasonably believes to be in the best interests of the corporation. He must not use his corporate position for personal gain or advantage. In general, but subject to certain exceptions, actions of a director are presumed to have been made on an informed basis, in good faith and in the honest belief that the action taken was in the best interests of the corporation. However, this presumption may be rebutted by evidence of a breach of one of the fiduciary duties. Delaware courts have also imposed a heightened standard of conduct upon directors of a Delaware corporation who take any action designed to defeat a threatened change in control of the corporation.<br> In addition, under Delaware law, when the board of directors of a Delaware corporation approves the sale or break-up of a corporation, the board of directors may, in certain circumstances, have a duty to obtain the highest value reasonably available to the stockholders. |

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| | | |
|:---|:---|:---|
|  | **England & Wales** | **Delaware** |
| **Stockholder**<br> **Suits** | Under English law, generally, the company, rather than its shareholders, is the proper claimant in an action in respect of a wrong done to the company or where there is an irregularity in the company's internal management. Notwithstanding this general position, the Companies Act 2006 provides that (i) a court may allow a shareholder to bring a derivative claim (that is, an action in respect of and on behalf of the company) in respect of a cause of action arising from a director's negligence, default, breach of duty or breach of trust and (ii) a shareholder may bring a claim for a court order where the company's affairs have been or are being conducted in a manner that is unfairly prejudicial to its shareholders generally or of some of its shareholders, or that an actual or proposed act or omission of the company is or would be so prejudicial. | Under Delaware law, a stockholder may initiate a derivative action to enforce a right of a corporation if the corporation fails to enforce the right itself. The complaint must:<br>• state that the plaintiff was a stockholder at the time of the transaction of which the plaintiff complains or that the plaintiff's shares thereafter devolved on the plaintiff by operation of law; and<br>• allege with particularity the efforts made by the plaintiff to obtain the action the plaintiff desires from the directors and the reasons for the plaintiff's failure to obtain the action; or<br>• state the reasons for not making the effort.<br>Additionally, the plaintiff must remain a stockholder through the duration of the derivative suit. The action will not be dismissed or compromised without the approval of the Delaware Court of Chancery. |

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**Transfer agent and registrar** 

The registrar for our ordinary shares is Equiniti Limited, and its principal office in Lancing, United Kingdom.

**Listing** 

The ADSs, representing our ordinary shares, are listed on Nasdaq Global Select Market under the symbol "ABCM."

**DESCRIPTION OF AMERICAN DEPOSITARY SHARES** 

**American Depositary Shares** 

Citibank, N.A. ("Citibank") is our depositary for our American Depositary Shares. Citibank's depositary offices are located at 388 Greenwich Street, New York, New York 10013. American Depositary Shares are frequently referred to as "ADSs" and represent ownership interests in securities that are on deposit with the depositary. ADSs may be represented by certificates that are commonly known as "American Depositary Receipts" or "ADRs." The depositary typically appoints a custodian to safekeep the securities on deposit. In this case, the custodian is Citibank, N.A. (London), located at Citigroup Centre, Canary Wharf, London, E14 5LB, United Kingdom.

The following is a summary of the material provisions of the deposit agreement. Please remember that summaries by their nature lack the precision of the information summarized and that the rights and obligations of an owner of ADSs will be determined by reference to the terms of the deposit agreement and not by this summary. We urge ADS holders to review the deposit agreement in its entirety. The portions of this summary description that are italicized describe matters that may be relevant to the ownership of ADSs but that may not be contained in the deposit agreement. For more complete information, all ADS holders should read the entire deposit agreement which has been publicly filed with the SEC and the form of ADR attached thereto.

Each ADS represents the right to receive, and to exercise the beneficial ownership interests in, one ordinary share that are on deposit with the depositary and/or custodian. An ADS also represents the right to receive, and to exercise the beneficial interests in, any other property received by the depositary or the custodian on behalf of the owner of the ADS but that has not been distributed to the owners of ADSs because of legal restrictions or practical considerations. We and the depositary may agree to change the ADS-to-Share ratio by amending the deposit agreement. This amendment may give rise to, or change, the depositary fees payable by ADS owners. The custodian, the depositary and their respective nominees will hold all deposited property for the benefit of the holders and beneficial owners of ADSs. The deposited property does not constitute the proprietary assets of the depositary, the

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custodian or their nominees. Beneficial ownership in the deposited property will under the terms of the deposit agreement be vested in the beneficial owners of the ADSs. The depositary, the custodian and their respective nominees will be the record holders of the deposited property represented by the ADSs for the benefit of the holders and beneficial owners of the corresponding ADSs. A beneficial owner of ADSs may or may not be the holder of ADSs. Beneficial owners of ADSs will be able to receive, and to exercise beneficial ownership interests in, the deposited property only through the registered holders of the ADSs, the registered holders of the ADSs (on behalf of the applicable ADS owners) only through the depositary, and the depositary (on behalf of the owners of the corresponding ADSs) directly, or indirectly, through the custodian or their respective nominees, in each case upon the terms of the deposit agreement.

ADS holders are party to the deposit agreement and are therefore bound to its terms and to the terms of any ADR that represent each ADS holder's ADSs. The deposit agreement and the ADR specify our rights and obligations as well as each ADS holder's rights and obligations as owner of ADSs and those of the depositary. ADS holders appoint the depositary to act on their behalf in certain circumstances. The deposit agreement and the ADRs are governed by New York law. However, our obligations to the holders of ordinary shares will continue to be governed by the laws of England and Wales, which may be different from the laws in the United States.

In addition, applicable laws and regulations may require an ADS holder to satisfy reporting requirements and obtain regulatory approvals in certain circumstances. An ADS holder is solely responsible for complying with such reporting requirements and obtaining such approvals. Neither the depositary, the custodian, us nor any of their or our respective agents or affiliates shall be required to take any actions whatsoever on behalf an ADS holder to satisfy such reporting requirements or obtain such regulatory approvals under applicable laws and regulations.

ADS holders are not treated as shareholders, and do not have direct shareholder rights. The depositary holds, on behalf of each ADS holder, the shareholder rights attached to the ordinary shares underlying each ADS holder's respective ADSs. ADS holders can exercise the shareholders rights for the ordinary shares represented by their respective ADSs through the depositary only to the extent contemplated in the deposit agreement. To exercise any shareholder rights not contemplated in the deposit agreement ADS holders, as ADS owners, need to arrange for the cancellation of their respective ADSs and become a direct shareholder.

The manner in which an ADS holder owns the ADSs (*e.g.*, in a brokerage account *vs*. as registered holder, or as holder of certificated vs. uncertificated ADSs) may affect an ADS holder's rights and obligations, and the manner in which, and extent to which, the depositary's services are made available to an ADS holder. As an owner of ADSs, ADS holders may hold ADSs either by means of an ADR registered in their name , through a brokerage or safekeeping account, or through an account established by the depositary in their name reflecting the registration of uncertificated ADSs directly on the books of the depositary (commonly referred to as the "direct registration system" or "DRS"). The direct registration system reflects the uncertificated (book-entry) registration of ownership of ADSs by the depositary. Under the direct registration system, ownership of ADSs is evidenced by periodic statements issued by the depositary to the holders of the ADSs. The direct registration system includes automated transfers between the depositary and The Depository Trust Company ("DTC"), the central book-entry clearing and settlement system for equity securities in the United States. If ADS holders decide to hold ADSs through a brokerage or safekeeping account, ADS holders must rely on the procedures of their respective broker or bank to assert their rights as ADS owners. Banks and brokers typically hold securities such as the ADSs through clearing and settlement systems such as DTC. The procedures of such clearing and settlement systems may limit ADS holders ability to exercise their rights as owners of ADSs. ADS holders should consult their broker or bank if they have any questions concerning these limitations and procedures. All ADSs held through DTC will be registered in the name of a nominee of DTC.

The registration of the ordinary shares in the name of the depositary or the custodian shall, to the maximum extent permitted by applicable law, vest in the depositary or the custodian the record ownership in the applicable ordinary shares with the beneficial ownership rights and interests in such ordinary shares being at all times vested with the beneficial owners of the ADSs representing the ordinary shares. The depositary or the custodian shall at all times be entitled to exercise the beneficial ownership rights in all deposited property, in each case only on behalf of the holders and beneficial owners of the ADSs representing the deposited property.

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**Dividends and Distributions** 

ADS holders generally have the right to receive the distributions we make on the securities deposited with the custodian. As an ADS holder, receipt of these distributions may be limited, however, by practical considerations and legal limitations. Holders of ADSs will receive such distributions under the terms of the deposit agreement in proportion to the number of ADSs held as of the specified record date, after deduction of the applicable fees, taxes and expenses.

**Distributions of Cash** 

Whenever we make a cash distribution for the securities on deposit with the custodian, we will deposit the funds with the custodian. Upon receipt of confirmation of the deposit of the requisite funds, the depositary will arrange for the funds received in a currency other than U.S. dollars to be converted into U.S. dollars and for the distribution of the U.S. dollars to the holders, subject to the laws and regulations of England and Wales.

The conversion into U.S. dollars will take place only if practicable and if the U.S. dollars are transferable to the United States. The depositary will apply the same method for distributing the proceeds of the sale of any property (such as undistributed rights) held by the custodian in respect of securities on deposit.

The distribution of cash will be made net of the fees, expenses, taxes and governmental charges payable by holders under the terms of the deposit agreement. The depositary will hold any cash amounts it is unable to distribute in a non-interest bearing account for the benefit of the applicable holders and beneficial owners of ADSs until the distribution can be effected or the funds that the depositary holds must be escheated as unclaimed property in accordance with the laws of the relevant states of the United States.

**Distributions of Shares** 

Whenever we make a free distribution of ordinary shares for the securities on deposit with the custodian, we will deposit the applicable number of ordinary shares with the custodian. Upon receipt of confirmation of such deposit, the depositary will *either* distribute to holders new ADSs representing the ordinary shares deposited *or* modify the ADS-to-ordinary shares ratio, in which case each ADS held by an ADS holder hold will represent rights and interests in the additional ordinary shares so deposited. Only whole new ADSs will be distributed. Fractional entitlements will be sold and the proceeds of such sale will be distributed as in the case of a cash distribution.

The distribution of new ADSs or the modification of the ADS-to-ordinary shares ratio upon a distribution of ordinary shares will be made net of the fees, expenses, taxes and governmental charges payable by holders under the terms of the deposit agreement. In order to pay such taxes or governmental charges, the depositary may sell all or a portion of the new ordinary shares so distributed.

No such distribution of new ADSs will be made if it would violate a law (*e.g.*, the U.S. securities laws) or if it is not operationally practicable. If the depositary does not distribute new ADSs as described above, it may sell the ordinary shares received upon the terms described in the deposit agreement and will distribute the proceeds of the sale as in the case of a distribution of cash.

**Distributions of Rights** 

Whenever we intend to distribute rights to subscribe for additional ordinary shares, we will give prior notice to the depositary, and we will assist the depositary in determining whether it is lawful and reasonably practicable to distribute rights to subscribe for additional ADSs to holders.

The depositary will establish procedures to distribute rights to subscribe for additional ADSs to holders and to enable such holders to exercise such rights if it is lawful and reasonably practicable to make the rights available to holders of ADSs, and if we provide all of the documentation contemplated in the deposit agreement (such as opinions to address the lawfulness of the transaction). ADS holders may have to pay fees, expenses, taxes and other governmental charges to subscribe for the new ADSs upon the exercise of their rights. The depositary is not obligated to establish procedures to facilitate the distribution and exercise by holders of rights to subscribe for new ordinary shares other than in the form of ADSs.

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The depositary will *not* distribute the rights to an ADS holder if:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We do not timely request that the rights be distributed to an ADS holder or we request that the rights not be
distributed to an ADS holder;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We fail to deliver satisfactory documents to the depositary; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• It is not reasonably practicable to distribute the rights.

The depositary will sell the rights that are not exercised or not distributed if such sale is lawful and reasonably practicable. The proceeds of such sale will be distributed to holders as in the case of a cash distribution. If the depositary is unable to sell the rights, it will allow the rights to lapse.

**Elective Distributions** 

Whenever we intend to distribute a dividend payable at the election of shareholders either in cash or in additional shares, we will give prior notice thereof to the depositary and will indicate whether we wish the elective distribution to be made available to ADS holders. In such case, we will assist the depositary in determining whether such distribution is lawful and reasonably practicable.

The depositary will make the election available to ADS holders only if it is reasonably practicable and if we have provided all of the documentation contemplated in the deposit agreement. In such case, the depositary will establish procedures to enable ADS holders to elect to receive either cash or additional ADSs, in each case as described in the deposit agreement.

If the election is not made available to an ADS holder, an ADS holder will receive either cash or additional ADSs, depending on what a shareholder in England and Wales would receive upon failing to make an election, as more fully described in the deposit agreement.

**Other Distributions** 

Whenever we intend to distribute property other than cash, ordinary shares or rights to subscribe for additional ordinary shares, we will notify the depositary in advance and will indicate whether we wish such distribution to be made to an ADS holder. If so, we will assist the depositary in determining whether such distribution to holders is lawful and reasonably practicable.

If it is reasonably practicable to distribute such property to an ADS holder and if we provide to the depositary all of the documentation contemplated in the deposit agreement, the depositary will distribute the property to the holders in a manner it deems practicable.

The distribution will be made net of fees, expenses, taxes and governmental charges payable by holders under the terms of the deposit agreement. In order to pay such taxes and governmental charges, the depositary may sell all or a portion of the property received.

The depositary will *not* distribute the property to an ADS holder and will sell the property if:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We do not request that the property be distributed to an ADS holder or if we request that the property not be
distributed to an ADS holder;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We do not deliver satisfactory documents to the depositary; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The depositary determines that all or a portion of the distribution to an ADS holder is not reasonably
practicable.

The proceeds of such a sale will be distributed to holders as in the case of a cash distribution.

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**Redemption** 

Whenever we decide to redeem any of the securities on deposit with the custodian, we will notify the depositary in advance. If it is practicable and if we provide all of the documentation contemplated in the deposit agreement, the depositary will provide notice of the redemption to the holders.

The custodian will be instructed to surrender the shares being redeemed against payment of the applicable redemption price. The depositary will convert into U.S. dollars upon the terms of the deposit agreement the redemption funds received in a currency other than U.S. dollars and will establish procedures to enable holders to receive the net proceeds from the redemption upon surrender of their ADSs to the depositary. ADS holders may have to pay fees, expenses, taxes and other governmental charges upon the redemption of and an ADS holder's ADSs. If less than all ADSs are being redeemed, the ADSs to be retired will be selected by lot or on a *pro rata* basis, as the depositary may determine.

**Changes Affecting Ordinary Shares** 

The ordinary shares held on deposit for an ADS holder's ADSs may change from time to time. For example, there may be a change in nominal or par value, split-up, cancellation, consolidation or any other reclassification of such ordinary shares or a recapitalization, reorganization, merger, consolidation or sale of assets of the Company.

If any such change were to occur, an ADS holder's ADSs would, to the extent permitted by law and the deposit agreement, represent the right to receive the property received or exchanged in respect of the ordinary shares held on deposit. The depositary may in such circumstances deliver new ADSs to an ADS holder, amend the deposit agreement, the ADRs and the applicable Registration Statement(s) on Form F-6, call for the exchange of an ADS holder's existing ADSs for new ADSs and take any other actions that are appropriate to reflect as to the ADSs the change affecting the ordinary shares. If the depositary may not lawfully distribute such property to an ADS holder, the depositary may sell such property and distribute the net proceeds to an ADS holder as in the case of a cash distribution.

**Issuance of ADSs Upon Deposit of Ordinary Shares** 

The depositary may create ADSs on behalf of an ADS holder or their broker if either deposit ordinary shares with the custodian. In such a scenario, the depositary will deliver these ADSs to the person indicated by the ADS holder only after the ADS holder pays any applicable issuance fees and any charges and taxes payable for the transfer of the ordinary shares to the custodian. An ADS holder's ability to deposit ordinary shares and receive ADSs may be limited by U.S. and England and Wales legal considerations applicable at the time of deposit.

The issuance of ADSs may be delayed until the depositary or the custodian receives confirmation that all required approvals have been given and that the ordinary shares have been duly transferred to the custodian. The depositary will only issue ADSs in whole numbers.

When an ADS holder makes a deposit of ordinary shares, the ADS holder is responsible for transferring good and valid title to the depositary. As such, ADS holders are deemed to represent and warrant that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The ordinary shares are duly authorized, validly issued, fully paid, non-assessable and legally obtained.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• All preemptive (and similar) rights, if any, with respect to such ordinary shares have been validly waived or
exercised.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• ADS holders are duly authorized to deposit the ordinary shares.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The ordinary shares presented for deposit are free and clear of any lien, encumbrance, security interest, charge,
mortgage or adverse claim, and are not, and the ADSs issuable upon such deposit will not be, "restricted securities" (as defined in the deposit agreement).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The ordinary shares presented for deposit have not been stripped of any rights or entitlements.

If any of the representations or warranties are incorrect in any way, we and the depositary may, at the cost and expense of the ADS holder, take any and all actions necessary to correct the consequences of the misrepresentations.

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**Transfer, Combination and Split Up of ADRs** 

ADS holders are entitled to transfer, combine or split up ADRs and the ADSs evidenced thereby. For transfers of ADRs, ADS holders have to surrender the ADRs to be transferred to the depositary and also must:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• ensure that the surrendered ADR is properly endorsed or otherwise in proper form for transfer;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• provide such proof of identity and genuineness of signatures as the depositary deems appropriate;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• provide any transfer stamps required by the State of New York or the United States; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• pay all applicable fees, charges, expenses, taxes and other government charges payable by ADR holders pursuant to
the terms of the deposit agreement, upon the transfer of ADRs.

In order for ADS holders to combine or split up ADRs, they must surrender the ADRs in question to the depositary with their request to have them combined or split up, and ADS holders must pay all applicable fees, charges and expenses payable by ADR holders, pursuant to the terms of the deposit agreement, upon a combination or split up of ADRs.

**Withdrawal of Ordinary Shares Upon Cancellation of ADSs** 

ADS holders are entitled to present ADSs to the depositary for cancellation and then receive the corresponding number of underlying ordinary shares at the custodian's offices. An ADS holder's ability to withdraw the ordinary shares held in respect of the ADSs may be limited by U.S. and England and Wales legal considerations applicable at the time of withdrawal. In order to withdraw the ordinary shares represented by an ADS holder's ADSs, the ADS holder is required to pay to the depositary the fees for cancellation of ADSs and any charges and taxes payable upon the transfer of the ordinary shares. The ADS holder assumes the risk for delivery of all funds and securities upon withdrawal. Once canceled, the ADSs will not have any rights under the deposit agreement.

If ADSs are registered in the name of the ADS holder, the depositary may ask the ADS holder to provide proof of identity and genuineness of any signature and such other documents as the depositary may deem appropriate before it will cancel the ADS holder's ADSs. The withdrawal of the ordinary shares represented by an ADS holder's ADSs may be delayed until the depositary receives satisfactory evidence of compliance with all applicable laws and regulations. Please keep in mind that the depositary will only accept ADSs for cancellation that represent a whole number of securities on deposit.

ADS holders have the right to withdraw the securities represented by their ADSs at any time except for:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Temporary delays that may arise because (i) the transfer books for the ordinary shares or ADSs are closed,
or (ii) ordinary shares are immobilized on account of a shareholders' meeting or a payment of dividends.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Obligations to pay fees, taxes and similar charges.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Restrictions imposed because of laws or regulations applicable to ADSs or the withdrawal of securities on
deposit.

The deposit agreement may not be modified to impair an ADS holder's rights to withdraw the securities represented by its ADSs except to comply with mandatory provisions of law.

**Voting Rights** 

ADS holders generally have the right under the deposit agreement to instruct the depositary to exercise the voting rights for the ordinary shares represented by their ADSs. The voting rights of holders of ordinary shares are described in "Description of Share Capital and Articles of Association."

At our request, the depositary will distribute to ADS holders any notice of shareholders' meeting received from us together with information explaining how to instruct the depositary to exercise the voting rights of the securities represented by ADSs. In lieu of distributing such materials, the depositary may distribute to holders of ADSs instructions on how to retrieve such materials upon request.

If the depositary timely receives voting instructions from a holder of ADSs, it will endeavor to vote the securities (in person or by proxy) represented by the holder's ADSs in accordance with such voting instructions as follows:

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• *In the event of voting by show of hands*, the depositary will vote (or cause the custodian to vote) all
ordinary shares held on deposit at that time in accordance with the voting instructions received from a majority of holders of ADSs who provide timely voting instructions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• *In the event of voting by poll*, the depositary will vote (or cause the custodian to vote) the ordinary
shares held on deposit in accordance with the voting instructions received from the holders of ADSs.

Securities for which no voting instructions have been received will not be voted (except as otherwise contemplated in the deposit agreement). Please note that the ability of the depositary to carry out voting instructions may be limited by practical and legal limitations and the terms of the securities on deposit. We cannot assure that ADS holders will receive voting materials in time to enable them to return voting instructions to the depositary in a timely manner.

**Amendments and Termination** 

We may agree with the depositary to modify the deposit agreement at any time without the consent of the ADS holder. We undertake to give holders 30 days' prior notice of any modifications that would materially prejudice any of their substantial rights under the deposit agreement. We will not consider to be materially prejudicial to an ADS holder's substantial rights any modifications or supplements that are reasonably necessary for the ADSs to be registered under the Securities Act or to be eligible for book-entry settlement, in each case without imposing or increasing the fees and charges that an ADS holder is required to pay. In addition, we may not be able to provide an ADS holder with prior notice of any modifications or supplements that are required to accommodate compliance with applicable provisions of law.

ADS holders are bound by the modifications to the deposit agreement if ADS holders continue to hold their ADSs after the modifications to the deposit agreement become effective. The deposit agreement cannot be amended to prevent ADS holders from withdrawing the ordinary shares represented by their ADSs (except as permitted by law).

We have the right to direct the depositary to terminate the deposit agreement. Similarly, the depositary may in certain circumstances on its own initiative terminate the deposit agreement. In either case, the depositary must give notice to the holders at least 30 days before termination. Until termination, an ADS holder's rights under the deposit agreement will be unaffected.

**Termination** 

After termination, the depositary will continue to collect distributions received (but will not distribute any such property until an ADS holder requests the cancellation of its ADSs) and may sell the securities held on deposit. After the sale, the depositary will hold the proceeds from such sale and any other funds then held for the holders of ADSs in a non-interest bearing account. At that point, the depositary will have no further obligations to holders other than to account for the funds then held for the holders of ADSs still outstanding (after deduction of applicable fees, taxes and expenses).

In connection with any termination of the deposit agreement, the depositary may make available to owners of ADSs a means to withdraw the ordinary shares represented by ADSs and to direct the depositary of such ordinary shares into an unsponsored American depositary share program established by the depositary. The ability to receive unsponsored American depositary shares upon termination of the deposit agreement would be subject to satisfaction of certain U.S. regulatory requirements applicable to the creation of unsponsored American depositary shares and the payment of applicable depositary fees.

**Books of Depositary** 

The depositary will maintain ADS holder records at its depositary office. ADS holders may inspect such records at such office during regular business hours but solely for the purpose of communicating with other holders in the interest of business matters relating to the ADSs and the deposit agreement.

The depositary will maintain in New York facilities to record and process the issuance, cancellation, combination, split-up and transfer of ADSs. These facilities may be closed from time to time, to the extent not prohibited by law.

------

**Limitations on Obligations and Liabilities** 

The deposit agreement limits our obligations and the depositary's obligations to ADS holders. Please note the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We and the depositary are obligated only to take the actions specifically stated in the deposit agreement without
negligence or bad faith.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The depositary disclaims any liability for any failure to carry out voting instructions, for any manner in which
a vote is cast or for the effect of any vote, provided it acts in good faith and in accordance with the terms of the deposit agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• The depositary disclaims any liability for any failure to determine the lawfulness or practicality of any action,
for the content of any document forwarded to ADS holders on our behalf or for the accuracy of any translation of such a document, for the investment risks associated with investing in ordinary shares, for the validity or worth of the ordinary
shares, for any tax consequences that result from the ownership of ADSs, for the credit-worthiness of any third party, for allowing any rights to lapse under the terms of the deposit agreement, for the timeliness of any of our notices or for our
failure to give notice.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We and the depositary will not be obligated to perform any act that is inconsistent with the terms of the deposit
agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We and the depositary disclaim any liability if we or the depositary are prevented or forbidden from or subject
to any civil or criminal penalty or restraint on account of, or delayed in, doing or performing any act or thing required by the terms of the deposit agreement, by reason of any provision, present or future of any law or regulation, or by reason of
present or future provision of any provision of our Articles of Association, or any provision of or governing the securities on deposit, or by reason of any act of God or war or other circumstances beyond our control.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We and the depositary disclaim any liability by reason of any exercise of, or failure to exercise, any discretion
provided for in the deposit agreement or in our Articles of Association or in any provisions of or governing the securities on deposit.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We and the depositary further disclaim any liability for any action or inaction in reliance on the advice or
information received from legal counsel, accountants, any person presenting ordinary shares for deposit, any holder of ADSs or authorized representatives thereof, or any other person believed by either of us in good faith to be competent to give
such advice or information.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We and the depositary also disclaim liability for the inability by a holder to benefit from any distribution,
offering, right or other benefit that is made available to holders of ordinary shares but is not, under the terms of the deposit agreement, made available to an ADS holder.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We and the depositary may rely without any liability upon any written notice, request or other document believed
to be genuine and to have been signed or presented by the proper parties.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• We and the depositary also disclaim liability for any consequential or punitive damages for any breach of the
terms of the deposit agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• No disclaimer of any Securities Act liability is intended by any provision of the deposit agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Nothing in the deposit agreement gives rise to a partnership or joint venture, or establishes a fiduciary
relationship, among us, the depositary and ADS holders.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Nothing in the deposit agreement precludes Citibank (or its affiliates) from engaging in transactions in which
parties adverse to us or the ADS owners have interests, and nothing in the deposit agreement obligates Citibank to disclose those transactions, or any information obtained in the course of those transactions, to us or to the ADS owners, or to
account for any payment received as part of those transactions.

**Governing Law/Waiver of Jury Trial** 

The deposit agreement, the ADRs and the ADSs will be interpreted in accordance with the laws of the State of New York. The rights of holders of ordinary shares (including ordinary shares represented by ADSs) are governed by the laws of England and Wales.

------

AS A PARTY TO THE DEPOSIT AGREEMENT, ADS HOLDERS IRREVOCABLY WAIVE, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, THEIR RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING ARISING OUT OF THE DEPOSIT AGREEMENT OR THE ADRs AGAINST US AND/OR THE DEPOSITARY.

The deposit agreement provides that, to the extent permitted by law, ADS holders waive the right to a jury trial of any claim they may have against us or the depositary arising out of or relating to our ordinary shares, the ADSs or the Deposit Agreement, including any claim under U.S. federal securities laws. The waiver continues to apply to claims that arise during the period when a holder holds the ADSs, whether the ADS holder purchased the ADSs in this offering or secondary transactions, even if the ADS holder subsequently withdraws the underlying ordinary shares. If we or the depositary opposed a jury trial demand based on the waiver, the court would determine whether the waiver was enforceable in the facts and circumstances of that case in accordance with applicable case law. However, ADS holders are not deemed, by agreeing to the terms of the deposit agreement, to have waived our or the depositary's compliance with U.S. federal securities laws and the rules and regulations promulgated thereunder.

## Exhibit 12.1

**Exhibit 12.1** 

**CERTIFICATION** 

I, Alan Hirzel, Chief Executive Officer, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. I have reviewed this annual report on Form 20-F of Abcam plc;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations and cash flows of the company as of, and for, the periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. The company's other certifying officer and I are responsible for establishing and maintaining disclosure
controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being
prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the company's disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the company's internal control over financial reporting that
occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the company's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. The company's other certifying officer and I have disclosed, based on our most recent evaluation of
internal control over financial reporting, to the company's auditors and the audit committee of the company's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the company's ability to record, process, summarize and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in
the company's internal control over financial reporting.

---

| | | |
|:---|:---|:---|
| Date: March 20, 2023 | By: | /s/ Alan Hirzel |
|  |  | Alan Hirzel |
|  |  | **Chief Executive Officer** |
|  |  | ***(Principal Executive Officer)*** |

---

## Exhibit 12.2

**Exhibit 12.2** 

**CERTIFICATION** 

I, Michael Baldock, Chief Financial Officer, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. I have reviewed this annual report on Form 20-F of Abcam plc;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations and cash flows of the company as of, and for, the periods presented in this report;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. The company's other certifying officer and I are responsible for establishing and maintaining disclosure
controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being
prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Designed such internal control over financial reporting, or caused such internal control over financial
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Evaluated the effectiveness of the company's disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Disclosed in this report any change in the company's internal control over financial reporting that
occurred during the period covered by the annual report that has materially affected, or is reasonably likely to materially affect, the company's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. The company's other certifying officer and I have disclosed, based on our most recent evaluation of
internal control over financial reporting, to the company's auditors and the audit committee of the company's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the company's ability to record, process, summarize and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in
the company's internal control over financial reporting.

---

| | | |
|:---|:---|:---|
| Date: March 20, 2023 | By: | /s/ Michael Baldock |
|  |  | Michael Baldock |
|  |  | **Chief Financial Officer** |
|  |  | ***(Principal Financial Officer)*** |

---

## Exhibit 13.1

**Exhibit 13.1** 

**CERTIFICATION PURSUANT TO** 

**18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO** 

**SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002** 

The certification set forth below is being submitted in connection with the Annual Report on Form 20-F of Abcam plc (the "Company") for the year ended December 31, 2022 (the "Report") for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934, (the "Exchange Act") and Section 1350 of Chapter 63 of Title 18 of the United States Code.

I, Alan Hirzel, Chief Executive Officer of the Company, certify that to the best of my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Exchange Act; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. The information contained in the Report fairly presents, in all material respects, the financial condition and
results of operations of the Company.

---

| | | |
|:---|:---|:---|
| Date: March 20, 2023 | By: | /s/ Alan Hirzel |
|  |  | Alan Hirzel |
|  |  | **Chief Executive Officer** |
|  |  | ***(Principal Executive Officer)*** |

---

## Exhibit 13.2

**Exhibit 13.2** 

**CERTIFICATION PURSUANT TO** 

**18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO** 

**SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002** 

The certification set forth below is being submitted in connection with the Annual Report on Form 20-F of Abcam plc (the "Company") for the year ended December 31, 2022 (the "Report") for the purpose of complying with Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934, (the "Exchange Act") and Section 1350 of Chapter 63 of Title 18 of the United States Code.

I, Michael Baldock, Chief Financial Officer of the Company, certify that to the best of my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Exchange Act; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. The information contained in the Report fairly presents, in all material respects, the financial condition and
results of operations of the Company.

---

| | | |
|:---|:---|:---|
| Date: March 20, 2023 | By: | /s/ Michael Baldock |
|  |  | Michael Baldock |
|  |  | **Chief Financial Officer** |
|  |  | ***(Principal Financial Officer)*** |

---

## Exhibit 15.1

**Exhibit 15.1** 

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form F-3 (No. 333-263945) and Form S-8 (Nos. 333-252514, 333-257893 and 333-263946) of Abcam plc of our report dated March 20, 2023 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 20-F.

/s/ PricewaterhouseCoopers LLP

Cambridge, United Kingdom

March 20, 2023