# EDGAR Filing Document

**Accession Number:** 0001060955
**File Stem:** 0001628280-25-045879
**Filing Date:** 2025-10
**Character Count:** 26898
**Document Hash:** 3e45f158f0e0ffd19abb7aab3efb392f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-25-045879.hdr.sgml**: 20251022

**ACCESSION NUMBER**: 0001628280-25-045879

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 3

**CONFORMED PERIOD OF REPORT**: 20250930

**FILED AS OF DATE**: 20251022

**DATE AS OF CHANGE**: 20251022

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ICON PLC
- **CENTRAL INDEX KEY:** 0001060955
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 981067160

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 333-08704
- **FILM NUMBER:** 251410441

**BUSINESS ADDRESS:**
- **STREET 1:** SOUTH COUNTY BUSINESS PARK
- **STREET 2:** LEOPARDSTOWN
- **CITY:** DUBLIN 18
- **STATE:** L2
- **ZIP:** 00000
- **BUSINESS PHONE:** 00 353 1 291 2000

**MAIL ADDRESS:**
- **STREET 1:** SOUTH COUNTY BUSINESS PARK
- **STREET 2:** LEOPARDSTOWN
- **CITY:** DUBLIN 18
- **STATE:** L2
- **ZIP:** 00000

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ICON PLC  /ADR/
- **DATE OF NAME CHANGE:** 20010213

 **UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

Washington, D.C. 20549

**FORM 6-K**

**Report of Foreign Private Issuer**

**Pursuant to Rule 13a-16 or 15d-16 under**

t**he Securities Exchange Act of 1934**

For the month of October 2025

**333-08704** 

(Commission file number)

**ICON plc**

(Translation of registrant's name into English)

South County Business Park, Leopardstown, Dublin 18, D18 X5R3, Ireland

(Address of principal executive offices)

---

| | | |
|:---|:---|:---|
| Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. | Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. | Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F. |
| | Form 20-F __**X**___ | &nbsp;&nbsp;Form 40-F ______ |

---

------

**<u>EXHIBIT LIST</u>**

---

| | |
|:---|:---|
| <u>Exhibit</u> | <u>Description</u> |
| <u>[99.1](q32025pressrelease.htm)</u> | <u>[ICON plc Press Release issued October 22, 2025 - ICON Reports Third Quarter 2025 Results](q32025pressrelease.htm)</u> |

---

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

---

| | |
|:---|:---|
| | **ICON plc** |
| | <u>/s/ Nigel Clerkin</u> |
| Date: October 22, 2025 | Nigel Clerkin<br>Chief Financial Officer |

---

## Exhibit 99.1

**Exhibit 99.1**

![image_0a.jpg](image_0a.jpg)

**ICON Reports Third Quarter 2025 Results**

**Highlights**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Quarter three revenue was $2,042.8 million representing an increase of 1.3% on quarter two 2025.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Net income for the quarter was $2.4 million or $0.03 per diluted share.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Quarter three adjusted EBITDA was $396.7 million or 19.4% of revenue, representing an increase of 0.2% on quarter two 2025.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Quarter three adjusted net income was $258.8 million or $3.31 per diluted ordinary share.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Gross business wins in the quarter of $2,986 million, representing an increase of 0.7% on quarter two 2025.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Net business wins in the quarter of $2,086 million, representing an increase of 1.4% on quarter two 2025; a net book to bill in the quarter of 1.02.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Net debt was $2.9 billion at September 30, 2025 with a net debt to adjusted EBITDA ratio of 1.8x.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Free cash flow was $333.9 million in the quarter and $687.2 million year to date.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• $250.0 million worth of stock repurchased in quarter three at an average price of $175 per share.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Amending full-year 2025 financial revenue guidance to a range of $8,050 - $8,100 million, an increase of $75 million at the midpoint from the prior full-year guidance range. Updating full-year 2025 adjusted diluted earnings per share\* guidance to a range of $13.00 - $13.20. Adjusted diluted earnings per share excludes amortization, stock compensation, restructuring, foreign exchange, transaction-related / integration-related adjustments, goodwill impairment and their related taxation effect.

Dublin, Ireland, October 22, 2025 – ICON plc (NASDAQ: ICLR), a world-leading clinical research organization, today reported its financial results for the third quarter ended September 30, 2025.

CEO, Mr. Barry Balfe commented, *"ICON's results in quarter three were reflective of broad market conditions, as we continued to partner with customers to navigate an uncertain environment. We are pleased with solid gross business wins and revenue in the quarter, resulting in a net book to bill ratio of 1.02 times. While we are encouraged by increased opportunity flow in the quarter, this is tempered by ongoing challenges in the sector including delayed decision making, elevated cancellations and uncertainty in the macro environment. We are amending our full-year financial guidance to reflect these dynamics, in addition to the impact of higher pass-through revenues.''*

**Third Quarter 2025 Results**

Gross business wins in the third quarter were $2,986 million and cancellations were $901 million. This resulted in net business wins of $2,086 million and a book to bill of 1.02.

Revenue for the third quarter was $2,042.8 million. This represents an increase of 0.6% on quarter three 2024 or a 1.0% decrease on a constant currency basis.

Following a quantitative assessment of goodwill performed as part of the annual impairment assessment at September 30, 2025, a non-cash goodwill impairment charge of $165.3 million was recorded in respect of the Data Solutions Reporting Unit.

GAAP net income was $2.4 million, resulting in $0.03 diluted earnings per share in quarter three 2025 compared to $2.36 diluted earnings per share in quarter three 2024. Adjusted net income for the quarter was $258.8 million, resulting in an adjusted diluted earnings per share of $3.31 compared to $3.35 per share for the third quarter 2024.

Adjusted EBITDA for the third quarter was $396.7 million or 19.4% of revenue, a decrease of 5.3% on quarter three 2024.

The effective tax rate on adjusted net income in quarter three 2025 was 16.5%.

------

Cash generated from operating activities for the quarter was $387.6 million. During the quarter $53.7 million was spent on capital expenditure. $250.0 million worth of stock was repurchased at an average price of $175 per share. Additionally, $7.4 million of Term Loan B payments were made during the quarter. At September 30, 2025, the Group had cash and cash equivalents of $468.9 million, compared to cash and cash equivalents of $390.4 million at June 30, 2025 and $695.5 million at September 30, 2024. Net indebtedness as at September 30, 2025 was $2.9 billion.

**Year to date 2025 Results**

Gross business wins year to date were $8,633 million and cancellations were $2,469 million. This resulted in net business wins of $6,164 million and a book to bill of 1.02.

Revenue year to date was $6,061.5 million. This represents a year on year decrease of 2.9% or 3.3% on a constant currency basis.

Following a quantitative assessment of goodwill performed as part of the annual impairment assessment at September 30, 2025, a non-cash goodwill impairment charge of $165.3 million was recorded in respect of the Data Solutions Reporting Unit.

GAAP net income year to date was $339.5 million, resulting in $4.27 diluted earnings per share. Year to date adjusted net income was $776.6 million, resulting in an adjusted diluted earnings per share of $9.77 compared to $10.57 per share for the equivalent prior year period.

Adjusted EBITDA year to date was $1,183.4 million or 19.5% of revenue, a year on year decrease of 9.9%.

The effective tax rate on adjusted net income year to date was 16.5%.

Cash generated from operating activities year to date was $802.0 million. Year to date $114.9 million was spent on capital expenditure, $750.0 million worth of stock was repurchased at an average price of $167 per share and $22.3 million of Term Loan B payments were made.

**Other Information**

In addition to the financial measures prepared in accordance with generally accepted accounting principles (GAAP), this press release contains certain non-GAAP financial measures, including adjusted EBITDA, adjusted net income and adjusted diluted earnings per share. Adjusted EBITDA, adjusted net income and adjusted diluted earnings per share exclude amortization, stock compensation, foreign exchange gains and losses, restructuring, transaction-related / integration-related adjustments, goodwill impairment and their related taxation effect. Free cash flow reflects cash generated from operating activities less capital expenditure. While non-GAAP financial measures are not superior to or a substitute for the comparable GAAP measures, ICON believes certain non-GAAP information is useful to investors for historical comparison purposes.

ICON will hold a conference call on October 23, 2025 at 08:00 EDT [13:00 Ireland & UK]. This call and linked slide presentation can be accessed live from our website at http://investor.iconplc.com. A recording will also be available on the website for 90 days following the call. In addition, a calendar of company events, including upcoming conference presentations, is available on our website, under "Investors". This calendar will be updated regularly.

This press release contains forward-looking statements, including statements about our financial guidance. These statements are based on management's current expectations and information currently available, including current economic and industry conditions. These statements are not guarantees of future performance or actual results, and actual results, developments and business decisions may differ from those stated in this press release. The forward-looking statements are subject to future events, risks, uncertainties and other factors that could cause actual results to differ materially from those projected in the statements, including, but not limited to, the ability to enter into new contracts, maintain client relationships, manage the opening of new offices and offering of new services, the integration of new business mergers and acquisitions, as well as other economic and global market conditions and other risks and uncertainties detailed from time to time in SEC reports filed by ICON, all of which are difficult to predict and some of which are beyond our control. For these reasons, you should not place undue reliance on these forward-looking statements when making investment decisions. The word "expected" and variations of such words and similar expressions are intended to identify forward-looking statements. Forward-looking statements are only as of the date they are made and we do not undertake any obligation to update publicly any forward-looking statement, either as a result of new information, future events or otherwise. More information about the risks and uncertainties relating to these forward-looking statements may be found in SEC reports filed by ICON, including its Form 20-F, F-1, F-4, S-8, F-3 and certain other reports, which are available on the SEC's website at http://www.sec.gov.

\* Our full-year 2025 guidance adjusted diluted earnings per share measures are provided on a non-GAAP basis because the company is unable to predict with a reasonable degree of certainty certain items contained in the GAAP measures without unreasonable efforts. For the same reasons, the company is unable to address the probable significance of the unavailable information.

------

ICON plc is a world-leading clinical research organization. From molecule to medicine, we advance clinical research providing outsourced services to pharmaceutical, biotechnology, medical device and government and public health organizations. We develop new innovations, drive emerging therapies forward and improve patient lives. With headquarters in Dublin, Ireland, ICON employed approximately 39,800 employees in 95 locations in 55 countries as at September 30, 2025. For further information about ICON, visit: www.iconplc.com.

Source: ICON plc

Contact: Investor Relations +1 888 381 7923

Nigel Clerkin Chief Financial Officer +353 1 291 2000

Kate Haven Vice President Investor Relations +1 888 381 7923

All at ICON

ICON/ICLR-F

------

**ICON plc**

**CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS**

**FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2025 AND SEPTEMBER 30, 2024**

**(UNAUDITED)** 

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **September 30,<br>2025** | **September 30,<br>2024** | **September 30,<br>2025** | **September 30,<br>2024** |
| | **(in thousands, except share and per share data)** | **(in thousands, except share and per share data)** | **(in thousands, except share and per share data)** | **(in thousands, except share and per share data)** |
| Revenue | $2042812 | $2030030 | $6061501 | $6240575 |
| Costs and expenses: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Direct costs | 1488364 | 1438616 | 4386801 | 4403583 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Selling, general and administrative | 197049 | 205095 | 600439 | 576903 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Depreciation and amortization | 98495 | 93029 | 292171 | 391845 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Transaction and integration related | 7020 | 7856 | 19141 | 21667 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Restructuring | &nbsp;&nbsp;— |  | 82296 | 45789 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Goodwill impairment | &nbsp;&nbsp;165300 |  | 165300 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total costs and expenses | 1956228 | 1744596 | 5546148 | 5439787 |
| Income from operations | 86584 | 285434 | 515353 | 800788 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest income | 1761 | 2434 | 5617 | 5601 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest expense | (50243) | (53303) | (148003) | (185808) |
| Income before income tax expense | 38102 | 234565 | 372967 | 620581 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income tax expense | (35747) | (37437) | (33489) | (89105) |
| Net income | $2355 | $197128 | $339478 | $531476 |
| Net income per Ordinary Share: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Basic | $0.03 | $2.38 | $4.29 | $6.43 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Diluted | $0.03 | $2.36 | $4.27 | $6.38 |
| Weighted average number of Ordinary Shares outstanding: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Basic | 77373534 | 82831300 | 79057239 | 82716842 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Diluted | 78082459 | 83445827 | 79518086 | 83305441 |

---

------

**ICON plc**

**CONDENSED CONSOLIDATED BALANCE SHEETS**

**AS AT SEPTEMBER 30, 2025 AND DECEMBER 31, 2024**

**(UNAUDITED)**

---

| | | |
|:---|:---|:---|
| | **September 30,<br>2025** | **December 31,<br>2024** |
| **ASSETS** | **(in thousands)** | **(in thousands)** |
| Current assets: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash and cash equivalents | $468888 | $538785 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable, net of allowance for credit losses | 1387690 | 1401989 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unbilled revenue | 1258706 | 1286274 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other receivables | 91018 | 79487 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Prepayments and other current assets | 140713 | 140435 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income taxes receivable | 61626 | 83523 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total current assets | $3408641 | $3530493 |
| Non-current assets: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Property, plant and equipment, net | 390837 | 382879 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Goodwill | 8927323 | 9051410 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Intangible assets, net | 3384322 | 3559792 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Operating right-of-use assets | 134341 | 147602 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other receivables | 89932 | 72796 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deferred tax asset | 100810 | 74758 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Investments in equity | 71284 | 57948 |
| Total Assets | $16507490 | $16877678 |
| **LIABILITIES AND SHAREHOLDERS' EQUITY** |  |  |
| Current liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | $113288 | $173025 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Unearned revenue | 1528343 | 1614758 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other liabilities | 998472 | 923603 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income taxes payable | 49350 | 55258 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Current bank credit lines, loan facilities and notes | 529762 | 29762 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total current liabilities | $3219215 | $2796406 |
| Non-current liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Non-current bank credit lines, loan facilities and notes, net | 2878547 | 3396398 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Lease liabilities | 125110 | 140085 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Non-current other liabilities | 99490 | 83470 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Non-current income taxes payable | 105832 | 125834 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deferred tax liability | 744450 | 812486 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Commitments and contingencies |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total Liabilities | $7172644 | $7354679 |
| Shareholders' Equity: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Ordinary shares, par value 6 euro cents per share; 100,000,000 shares authorized, |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;76,359,932 shares issued and outstanding at September 30, 2025 and |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;80,756,860 shares issued and outstanding at December 31, 2024 | 6290 | 6586 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Additional paid-in capital | 7100059 | 7020231 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other undenominated capital | 1606 | 1304 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accumulated other comprehensive loss | (86944) | (229929) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Retained earnings | 2313835 | 2724807 |
| Total Shareholders' Equity | $9334846 | $9522999 |
| Total Liabilities and Shareholders' Equity | $16507490 | $16877678 |

---

------

**ICON plc**

**CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS**

**FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2025 AND SEPTEMBER 30, 2024** 

**(UNAUDITED)**

---

| | | |
|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** |
| | **September 30,<br>2025** | **September 30,<br>2024** |
| | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(in thousands)** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(in thousands)** |
| **Cash flows provided by operating activities:** | | |
| Net income | $339478 | $531476 |
| &nbsp;&nbsp;Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation and amortization expense | 292171 | 391845 |
| &nbsp;&nbsp;&nbsp;&nbsp;Goodwill impairment | 165300 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Impairment of operating right-of-use assets and related property, plant and equipment | 5573 | 12559 |
| &nbsp;&nbsp;&nbsp;&nbsp;Reduction in carrying value of operating right-of-use assets | 29473 | 29820 |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization of financing costs and debt discount | 4470 | 22066 |
| &nbsp;&nbsp;&nbsp;&nbsp;Stock compensation expense | 72529 | 41183 |
| &nbsp;&nbsp;&nbsp;&nbsp;Deferred tax benefit | (91788) | (86579) |
| &nbsp;&nbsp;&nbsp;&nbsp;Unrealized foreign exchange movements | 24661 | 34018 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other non-cash items | 20561 | 26828 |
| &nbsp;&nbsp;&nbsp;**Changes in operating assets and liabilities:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable | 1013 | 352795 |
| &nbsp;&nbsp;&nbsp;&nbsp;Unbilled revenue | 25979 | (423533) |
| &nbsp;&nbsp;&nbsp;&nbsp;Unearned revenue | (101089) | (72930) |
| &nbsp;&nbsp;&nbsp;&nbsp;Other net assets and liabilities | 13712 | 88790 |
| Net cash provided by operating activities | 802043 | 948338 |
| **Cash flows used in investing activities:** |  |  |
| &nbsp;&nbsp;&nbsp;Purchase of property, plant and equipment | (114885) | (106772) |
| &nbsp;&nbsp;&nbsp;Purchase of subsidiary undertakings (net of cash acquired) | (2537) | (85629) |
| &nbsp;&nbsp;&nbsp;Movement of available for sale investments |  | 1954 |
| &nbsp;&nbsp;&nbsp;Proceeds from investments in equity | 2114 | 2671 |
| &nbsp;&nbsp;&nbsp;Purchase of investments in equity | (16286) | (10131) |
| Net cash used in investing activities | (131594) | (197907) |
| **Cash flows used in financing activities:** |  |  |
| &nbsp;&nbsp;New Notes issue costs |  | (12678) |
| &nbsp;&nbsp;Drawdown of credit lines and loan facilities | 50000 | 2242480 |
| &nbsp;&nbsp;Repayment of credit lines and loan facilities | (72321) | (2595323) |
| &nbsp;&nbsp;Proceeds from exercise of equity compensation | 7319 | 32379 |
| &nbsp;&nbsp;Share issue costs | (14) | (17) |
| &nbsp;&nbsp;Repurchase of ordinary shares | (750000) | (100000) |
| &nbsp;&nbsp;Share repurchase costs | (450) | (68) |
| Net cash used in financing activities | (765466) | (433227) |
| Effect of exchange rate movements on cash | 25120 | 201 |
| **Net (decrease) / increase in cash and cash equivalents** | (69897) | 317405 |
| Cash and cash equivalents at beginning of period | 538785 | 378102 |
| **Cash and cash equivalents at end of period** | $468888 | $695507 |

---

&nbsp;&nbsp;&nbsp;&nbsp;

------

**ICON plc**

**RECONCILIATION OF NON-GAAP MEASURES**

**FOR THE THREE AND NINE MONTHS ENDED SEPTEMBER 30, 2025 AND SEPTEMBER 30, 2024** 

**(UNAUDITED)**

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **September 30,<br>2025** | **September 30,<br>2024** | **September 30,<br>2025** | **September 30,<br>2024** |
| | **(in thousands, except share and per share data)** | **(in thousands, except share and per share data)** | **(in thousands, except share and per share data)** | **(in thousands, except share and per share data)** |
| **Adjusted EBITDA** | | | | |
| Net income | $2355 | $197128 | $339478 | $531476 |
| Income tax expense | 35747 | 37437 | 33489 | 89105 |
| Net interest expense  | 48482 | 50869 | 142386 | 180207 |
| Depreciation and amortization | 98495 | 93029 | 292171 | 391845 |
| Stock-based compensation expense <sup>(a)</sup> | 46191 | 13038 | 73918 | 41183 |
| Foreign currency (gains)/losses, net <sup>(b)</sup> | (6860) | 19434 | 35250 | 11960 |
| Restructuring <sup>(c)</sup> |  |  | 82296 | 45789 |
| Transaction and integration related costs <sup>(d)</sup> | 7020 | 7856 | 19141 | 21667 |
| Goodwill impairment <sup>(f)</sup> | 165300 |  | 165300 |  |
| **Adjusted EBITDA** | $396730 | $418791 | $1183429 | $1313232 |
| **Adjusted net income and adjusted diluted net income per Ordinary Share** |  |  |  |  |
| Net income | $2355 | $197128 | $339478 | $531476 |
| Income tax expense | 35747 | 37437 | 33489 | 89105 |
| Amortization | 58688 | 58026 | 176691 | 291013 |
| Stock-based compensation expense <sup>(a)</sup> | 46191 | 13038 | 73918 | 41183 |
| Foreign currency (gains)/losses, net <sup>(b)</sup> | (6860) | 19434 | 35250 | 11960 |
| Restructuring <sup>(c)</sup> |  |  | 82296 | 45789 |
| Transaction and integration related costs <sup>(d)</sup> | 7020 | 7856 | 19141 | 21667 |
| Transaction-related financing costs <sup>(e)</sup> | 1499 | 1462 | 4470 | 22066 |
| Goodwill impairment <sup>(f)</sup> | 165300 |  | 165300 |  |
| Adjusted tax expense <sup>(g)</sup> | (51140) | (55173) | (153455) | (173953) |
| **Adjusted net income** | $258800 | $279208 | $776578 | $880306 |
| Diluted weighted average number of Ordinary Shares outstanding | 78082459 | 83445827 | 79518086 | 83305441 |
| **Adjusted diluted net income per Ordinary Share** | $3.31 | $3.35 | $9.77 | $10.57 |

---

------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)Stock-based compensation expense represents the amount of expense related to the company's equity compensation programs (inclusive of employer related taxes).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)Foreign currency (gains)/losses, net relates to losses or gains that arise in connection with the revaluation, or settlement, of non-US dollar denominated assets and liabilities. We exclude these losses and gains from adjusted EBITDA and adjusted net income because fluctuations from period- to- period do not necessarily correspond to changes in our operating results.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)Restructuring relates to charges incurred in connection with the company's realignments of its workforce, with the elimination of redundant positions as well as reviewing its global office footprint and optimizing its locations to best fit the requirements of the company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)Transaction and integration related costs include expenses associated with our acquisitions and any other costs incurred directly related to the integration of these acquisitions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)Transaction-related financing costs includes costs incurred in connection with changes to our long-term debt and amortization of financing fees. We exclude these costs from adjusted EBITDA and adjusted net income because they result from financing decisions rather than from decisions made related to our ongoing operations.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(f)Goodwill impairment relates to an impairment of goodwill allocated to the Company's Data Solutions reporting unit.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(g)Represents the tax effect of adjusted pre-tax income at our estimated effective tax rate.

ICON plc

---

| | |
|:---|:---|
| Contact: | Investor Relations +1 888 381 7923  |
| | Nigel Clerkin Chief Financial Officer +353 1 291 2000 |
| | Kate Haven Vice President Investor Relations +1 888 381 7923 |
| | http://www.iconplc.com |

---

<br>