# EDGAR Filing Document

**Accession Number:** 0001521036
**File Stem:** 0001193125-26-073498
**Filing Date:** 2026-2
**Character Count:** 755652
**Document Hash:** a72e2e86cd20347a7848b1839cb24426
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-073498.hdr.sgml**: 20260226

**ACCESSION NUMBER**: 0001193125-26-073498

**CONFORMED SUBMISSION TYPE**: 10-K

**PUBLIC DOCUMENT COUNT**: 139

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260226

**DATE AS OF CHANGE**: 20260226

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Lantheus Holdings, Inc.
- **CENTRAL INDEX KEY:** 0001521036
- **STANDARD INDUSTRIAL CLASSIFICATION:** IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 352318913
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 10-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-36569
- **FILM NUMBER:** 26681762

**BUSINESS ADDRESS:**
- **STREET 1:** 331 TREBLE COVE ROAD
- **CITY:** NORTH BILLERICA
- **STATE:** MA
- **ZIP:** 01862
- **BUSINESS PHONE:** 978 671-8001

**MAIL ADDRESS:**
- **STREET 1:** 331 TREBLE COVE ROAD
- **CITY:** NORTH BILLERICA
- **STATE:** MA
- **ZIP:** 01862

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Lantheus MI Holdings, Inc.
- **DATE OF NAME CHANGE:** 20110517

?xml version='1.0' encoding='ASCII'? 10-K

[**<u>**Table of Contents**</u>**](#toc_page)

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, D.C. 20549**

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**FORM** 10-K

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**(Mark One)**

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| | |
|:---|:---|
| ☑ | **ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934** |

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**For the fiscal year ended** December 31**,** 2025

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

**For the transition period from to** 

**Commission File Number** 001-36569

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| |
|:---|
| LANTHEUS HOLDINGS, INC. |
| **(Exact name of registrant as specified in its charter)** |

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| | |
|:---|:---|
| Delaware | 35-2318913 |
| **(State or other jurisdiction of incorporation or organization)** | **(I.R.S. Employer Identification No.)** |
| 201 Burlington Road, South Building**,** Bedford**,** MA | 01730 |
| **(Address of principal executive offices)** | **(Zip Code)** |

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**Registrant's telephone number, including area code: <u>(</u>**978**<u>)</u>** 671-8001

**Securities registered pursuant to Section 12(b) of the Act:**

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| | | |
|:---|:---|:---|
| **Title of Each Class** | **Trading Symbol(s)** | **Name of Each Exchange on Which Registered** |
| Common Stock, $0.01 par value per share | LNTH | NASDAQ Global Market |

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**Securities registered pursuant to Section 12(g) of the Act:**

**None**

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

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☑

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 ☑ No ☐

Indicate by check mark whether the registrant has submitted 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 ☑ No ☐

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

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| | | | |
|:---|:---|:---|:---|
| Large accelerated filer | ☑ | Accelerated filer | ☐ |
| Non-accelerated filer | ☐ | Smaller reporting company | ☐ |
|  |  | Emerging growth company | ☐ |

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If an emerging growth company, 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. ☐

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 whether the registrant is a shell company (as defined by Rule 12b-2 of the Act) Yes ☐ No ☑

The aggregate market value of the registrant's common stock held by non-affiliates of the registrant on June 30, 2025 was approximately $4,274.70 million based on the last reported sale price of the registrant's common stock on the NASDAQ Global Market on June 30, 2025 of $81.86 per share.

As of February 23, 2026 the registrant had 64,605,894 shares of common stock, $0.01 par value, issued and outstanding.

**DOCUMENTS INCORPORATED BY REFERENCE**

Listed hereunder are the documents, portions of which are incorporated by reference, and the parts of this Form 10-K into which such portions are incorporated:

The Registrant's Definitive Proxy Statement for use in connection with the Annual Meeting of Stockholders to be held on April 30, 2026, portions of which are incorporated by reference into Parts II and III of this Form 10-K. The 2026 Proxy Statement will be filed with the Securities and Exchange Commission no later than 120 days after the close of our year ended December 31, 2025.

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**LANTHEUS HOLDINGS, INC.**

**ANNUAL REPORT ON FORM 10-K**

**TABLE OF CONTENTS**

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| | | |
|:---|:---|:---|
|  |  | **Page** |
| [**PART I**](#part_i) | [**PART I**](#part_i) |  |
| [Item 1.](#item1_business) | [Business](#item1_business) | [5](#item1_business) |
| [Item 1A.](#item1a_risk_factors) | [Risk Factors](#item1a_risk_factors) | [30](#item1a_risk_factors) |
| [Item 1B.](#item1b_unresolved_staff_comments) | [Unresolved Staff Comments](#item1b_unresolved_staff_comments) | [57](#item1b_unresolved_staff_comments) |
| [Item 1C.](#item_1c_cybersecurity) | [Cybersecurity](#item_1c_cybersecurity) | [57](#item_1c_cybersecurity) |
| [Item 2.](#item2_properties) | [Properties](#item2_properties) | [58](#item2_properties) |
| [Item 3.](#item3_legal_proceedings) | [Legal Proceedings](#item3_legal_proceedings) | [59](#item3_legal_proceedings) |
| [Item 4.](#item4_mine_safety_disclosures) | [Mine Safety Disclosures](#item4_mine_safety_disclosures) | [59](#item4_mine_safety_disclosures) |
| [**PART II**](#part_ii) | [**PART II**](#part_ii) |  |
| [Item 5.](#item5_market_for_registrants_common_equi) | [Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities](#item5_market_for_registrants_common_equi) | [60](#item5_market_for_registrants_common_equi) |
| [Item 6.](#item6_reserved) | [\[Reserved\]](#item6_reserved) | [62](#item6_reserved) |
| [Item 7.](#item7_managements_discussion_and_analysi) | [Management's Discussion and Analysis of Financial Condition and Results of Operations](#item7_managements_discussion_and_analysi) | [63](#item7_managements_discussion_and_analysi) |
| [Item 7A.](#item7a_quantitative_and_qualitative) | [Quantitative and Qualitative Disclosures About Market Risk](#item7a_quantitative_and_qualitative) | [79](#item7a_quantitative_and_qualitative) |
| [Item 8.](#item8_financial_statements_and_suppleme) | [Financial Statements and Supplementary Data](#item8_financial_statements_and_suppleme) | [81](#item8_financial_statements_and_suppleme) |
| [Item 9.](#item9_changes_in_and_disagreements_with) | [Changes in and Disagreements with Accountants on Accounting and Financial Disclosure](#item9_changes_in_and_disagreements_with) | [131](#item9_changes_in_and_disagreements_with) |
| [Item 9A.](#item9a_controls_and_procedures) | [Controls and Procedures](#item9a_controls_and_procedures) | [131](#item9a_controls_and_procedures) |
| [Item 9B.](#item9b_other_information) | [Other Information](#item9b_other_information) | [132](#item9b_other_information) |
| [Item 9C.](#item9c_disclosure_regarding_foreign) | [Disclosure Regarding Foreign Jurisdictions that Prevent Inspections](#item9c_disclosure_regarding_foreign) | [132](#item9c_disclosure_regarding_foreign) |
| [**PART III**](#part_iii) | [**PART III**](#part_iii) |  |
| [Item 10.](#item10_directors_executive_officers_and) | [Directors, Executive Officers and Corporate Governance](#item10_directors_executive_officers_and) | [133](#item10_directors_executive_officers_and) |
| [Item 11.](#item11_executive_compensation) | [Executive Compensation](#item11_executive_compensation) | [133](#item11_executive_compensation) |
| [Item 12.](#item12_security_ownership_of_certain) | [Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters](#item12_security_ownership_of_certain) | [133](#item12_security_ownership_of_certain) |
| [Item 13.](#item13_certain_relationships_and_related) | [Certain Relationships and Related Transactions, and Director Independence](#item13_certain_relationships_and_related) | [133](#item13_certain_relationships_and_related) |
| [Item 14.](#item14_principal_accountant_fees_and_ser) | [Principal Accountant Fees and Services](#item14_principal_accountant_fees_and_ser) | [133](#item14_principal_accountant_fees_and_ser) |
| [**PART IV**](#part_iv) | [**PART IV**](#part_iv) |  |
| [Item 15.](#item15_exhibits_and_financial_statement_) | [Exhibits and Financial Statement Schedules](#item15_exhibits_and_financial_statement_) | [134](#item15_exhibits_and_financial_statement_) |
| [Item 16.](#item16_form_10k_summary) | [Form 10-K Summary](#item16_form_10k_summary) | [136](#item16_form_10k_summary) |
| [SIGNATURES](#signatures) | [SIGNATURES](#signatures) | [137](#signatures) |

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**CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS**

Some of the statements contained in this Annual Report on Form 10-K ("Form 10-K") are forward-looking statements within the meaning of 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, including, in particular, statements about our plans, strategies, prospects and industry estimates, are subject to risks and uncertainties. These statements identify prospective information and can generally be identified by words such as "anticipates," "believes," "can," "commitment," "could," "designed," "ensuring," "estimates," "expects," "generate," "impact," "increasing," "hopes," "intends," "launch," "likely," "long-term," "maintain," "may," "pipeline," "plans," "potential," "predict," "remain," "seek," "should," "sustain," "target," "will," "would" and similar expressions, or by express or implied discussions regarding potential acquisitions, dispositions, collaborations, development and commercialization plans described in this Form 10-K, or regarding potential future revenues and expenses related to such acquisitions, collaborations, development and commercialization plans. Examples of forward-looking statements include statements we make relating to our outlook and expectations including, without limitation, in connection with:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Continued market expansion, penetration and reimbursement for our established commercial products, particularly PYLARIFY, DEFINITY and Neuraceq, in a competitive environment, and our ability to clinically and commercially differentiate our products;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to obtain U.S. Food and Drug Administration ("FDA") approval for our new formulation of our F-18 prostate-specific membrane antigen ("PSMA") positron emission tomography (" PET") imaging agent, to complete the technology transfer across our PET manufacturing facilities ("PMF") network for such new formulation, to obtain FDA approval for each PET manufacturing facility to manufacture the new formulation, to obtain adequate coding, coverage and payment, including transitional pass-through payment status ("TPT Status"), for such new formulation and to have customers adopt such new formulation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The availability of raw materials, key components, equipment, manufacturing time slots, either used in the production of our products and product candidates, or by customers of our products and product candidates, including, but not limited to PET scanners for PYLARIFY, Neuraceq, MK-6240, LNTH-2501 and NAV-4694;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to have third parties manufacture our products and product candidates and our ability to manufacture DEFINITY in our in-house manufacturing facility, in amounts and at the times needed;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to satisfy our obligations under our existing clinical development partnerships using Neuraceq, MK-6240 or NAV-4694 as a research tool and under the license agreements through which we have rights to those assets, and to further develop and commercialize MK-6240 and NAV-4694 as approved products;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to continue to successfully integrate acquisitions, including of Life Molecular Imaging Limited ("Life Molecular") and Evergreen Theragnostics, Inc. ("Evergreen"), which could be impacted by unforeseen expenses related to integration activities, the accuracy of our financial models, the potential for unforeseen liabilities within those businesses, the ability to integrate disparate information technology systems, retain key talent and create a merged corporate culture that successfully realizes the full potential of the combined organization;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to obtain FDA approval for LNTH-2501, our investigational kit for the preparation of Gallium-68 edotreotide injection, which has been studied for use in conjunction with a PET scan to stage and localize neuroendocrine tumors in adult and pediatric patients, and approval for PNT2003, and to be successful in the patent litigation associated with PNT2003;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The cost, efforts and timing for clinical development, manufacturing, regulatory approval, adequate coding, coverage and payment, and successful commercialization of our product candidates and new clinical applications and territories for our products, in each case, that we or our strategic partners may undertake, including those investigational assets for which FDA approval is anticipated this year;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to identify opportunities to collaborate with strategic partners and to acquire or in-license additional diagnostic and therapeutic product opportunities in oncology, neurology and other strategic areas and continue to grow and advance our pipeline of products; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The effect that changes to management, including the recent turnover in our leadership and senior management team, could have on our business.

Forward-looking statements are based on our current expectations and assumptions regarding our business, the economy and other future conditions. Because forward-looking statements relate to the future, such statements are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. Our actual results may differ materially from those contemplated by the forward-looking statements. These statements are neither statements of historical fact nor guarantees or assurances of future performance. The matters referred to in the forward-looking statements contained in this Form 10-K may not in fact occur. We caution you, therefore, against relying on any of these forward-looking statements. These forward-looking

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statements are subject to a number of risks, uncertainties and assumptions, including those described in Part I, Item 1A, *"Risk Factors"* of this Form 10-K.

Any forward-looking statement made by us in this Form 10-K speaks only as of the date on which it is made. Factors or events that could cause our actual results to differ may emerge from time to time, and it is not possible for us to predict all of them. We undertake no obligation to publicly update any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by law.

**SUMMARY OF MATERIAL RISKS ASSOCIATED WITH OUR BUSINESS**

Our business is subject to a number of risks, including risks that may adversely affect our business, results of operations, cash flows, and prospects. These risks are discussed more fully below and include, but are not limited to:

***<u>Risks Related to Our Portfolio of Commercial Products</u>***

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The continued substantial revenue contribution from PYLARIFY is dependent on (A) the ability of PMFs to manufacture PYLARIFY to meet product demand, including ensuring that PYLARIFY is available at the specific time of day preferred by the end-user, (B) our ability to ensure adequate coding, coverage, and payment for PYLARIFY, (C) our ability to promote PYLARIFY to customers and to maintain PYLARIFY as a widely utilized PSMA PET imaging agent, which has been impacted by the expiration of TPT Status on December 31, 2024, (D) whether and when a potential generic version of PYLARIFY may enter the market and (E) our ability to clinically and commercially differentiate PYLARIFY from competitive products.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to continue to (A) grow the appropriate use of DEFINITY in suboptimal echocardiograms in a competitive environment, (B) mitigate the risk of generic competition as a result of patent and regulatory exclusivity expirations, (C) maintain DEFINITY as the most utilized ultrasound enhancing agent, and (D) have third parties manufacture our products and our ability to manufacture DEFINITY in our in-house manufacturing facility.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to grow Neuraceq is dependent on (A) our ability to engage our existing PYLARIFY customers to introduce Neuraceq to those customers, (B) expanded geographical access to Neuraceq, which in turn depends on our ability to increase Neuraceq manufacturing capacity at existing manufacturing sites and add additional sites, (C) increased adoption and utilization of beta-amyloid PET and anti-amyloid therapeutics, (D) increased utilization based on the updated Neuraceq prescribing information indicating that Neuraceq can be used for patient selection for anti-amyloid therapies where the prescribing information for the therapy so states, (E) our ability to educate customers on the approved uses of Neuraceq, including its ability to quantify the degree of amyloid burden in the brain and (F) our ability to clinically differentiate Neuraceq from competitive products so that customers choose Neuraceq for appropriate patients because of its clinical attributes and despite the disparity in MUC payment rates for Neuraceq compared to other products used for traditional Medicare patients in the hospital outpatient setting.

***<u>Risks Related to Reimbursement and Regulation</u>***

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The dependence of many of our customers upon third party healthcare payors and the uncertainty of third party coverage and reimbursement rates.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Uncertainties regarding the impact of federal and state healthcare reform measures and proposals on our business, including measures and proposals related to reimbursement for our current and potential future products, controls over drug pricing, drug pricing transparency, generic drug competition and the potential that efforts to extend or secure separate or otherwise adequate payment for radiopharmaceutical diagnostics are unsuccessful.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The extensive government regulation and oversight we and our business partners, suppliers and contract manufacturers are subject to, the ability to comply with those regulations and the costs of compliance, including costs to comply with new regulations or changes to the interpretation of existing regulations.

***<u>Risks Related to Our Business Operations and Financial Results</u>***

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Changes to management, including the recent turnover in our leadership and senior management team, could have an adverse effect on our business.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to hire or retain the number of qualified personnel, particularly scientific, medical and sales personnel, required for our business.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability, and our business partners' abilities, to defend against any claims that we, or our partners, have infringed, misappropriated or otherwise violated the patent or other intellectual property rights of a third party.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to continue to generate substantial revenue from PYLARIFY and to successfully launch new products, including our PET diagnostic products, such as the new formulation of our PSMA PET imaging agent, MK-6240,

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LNTH-2501 and NAV-4694, is and will be dependent upon the availability of staff at imaging centers and hospitals and PET scanners generally.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to continue to successfully integrate acquisitions, including of Life Molecular and Evergreen, which could be impacted by unforeseen expenses related to integration activities, the accuracy of our financial models, the potential for unforeseen liabilities within those businesses, the ability to integrate disparate information technology systems, retain key talent and create a merged corporate culture that successfully realizes the full potential of the combined organization.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to introduce new products and adapt to an evolving technology and medical practice landscape.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to influence and manage the decision-making process with our collaboration partners, in particular where our partners are responsible for the performance of certain key tasks or functions, for example related to manufacturing or regulatory strategy, or where decisions may be controlled by, or subject to the approval of our collaboration partners, who may have views that differ from our own.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our use of artificial intelligence or other emerging technologies could adversely affect our business, results of operations, financial condition and cash flows.

***<u>Risks Related to Our and Our Strategic Partners' Portfolios of Clinical Development Candidates</u>***

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks associated with the commercialization of the new formulation of our PSMA PET imaging agent, including (A) our ability to obtain regulatory approval for the new formulation; (B) our ability to gain post-approval market acceptance and adequate coding, coverage, and payment for the new formulation, including TPT Status; (C) our manufacturer's ability to successfully develop and scale the manufacturing capabilities to support the launch of the new formulation and to obtain FDA approval for each manufacturing site; (D) our ability to launch the new formulation to our customers on the timeline and under the terms and conditions currently anticipated; and (E) that we will be able to realize the anticipated increase in batch size or other expected improvements associated with the design of the new formulation or that such improvements will be viewed in the market as differentiating factors.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks associated with the commercialization of our diagnostic product candidates, MK-6240, NAV-4694 and LNTH-2620, to be used in diagnosing, staging and monitoring Alzheimer's disease, including (A) our ability to satisfy our obligations under our existing clinical development partnerships using those product candidates as a research tool; (B) disagreements with the counterparties to our license agreements for MK-6240, NAV-4694 or LNTH-2620 or the former stockholders of the companies we acquired who could receive future milestone and royalty-based payments, including disagreements that could arise over proprietary rights, contract interpretation or the preferred course of product research, development or marketing; and (C) our ability to further develop and commercialize MK-6240, NAV-4694 or LNTH-2620 as approved products, including obtaining regulatory approval and gaining post-approval market acceptance and adequate coding, coverage, and payment.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks associated with the commercialization of LNTH-2501, including (A) our ability to obtain regulatory approval for LNTH-2501; (B) our ability to gain post-approval market acceptance and adequate coding, coverage, and payment for LNTH-2501; and (C) our manufacturer's ability to successfully develop and scale the manufacturing capabilities to support the launch of LNTH-2501.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks associated with the commercialization of PNT2003, including (A) the outcome of the patent infringement claim by Advanced Accelerator Applications USA, Inc. and Advanced Accelerator Applications SA, each a Novartis entity, in response to our filing of our Abbreviated New Drug Application; (B) our ability to obtain regulatory approval for PNT2003; (C) our ability to gain post-approval market acceptance and adequate coding, coverage, and payment for PNT2003; and (D) POINT Biopharma Global Inc.'s ability to successfully develop and scale the manufacturing capabilities to support the launch of PNT2003.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks associated with our agreements with Perspective Therapeutics, Inc. ("Perspective"), including finalizing the license agreements in the event we exercise our options to do so, the value of our current and any future equity interest in Perspective, and Perspective's ability to successfully develop its alpha-particle therapy and innovative platform technology.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks associated with the development of our pipeline assets, including (A) under agreements with third parties such as the license and collaboration agreement for LNTH-2401 and LNTH-2402 relating to RM2, (B) the development of LNTH-2403 and LNTH-2404, the associated investment in Radiopharm Theranostics Limited ("Radiopharm") and our co-development partnership with Radiopharm relating to the clinical development of our innovative products and product candidates in Australia.

***<u>Risks Related to Our Capital Structure</u>***

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Repurchases by us of our common stock may affect the value of our common stock and reduce cash available for other purposes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks related to our outstanding indebtedness and our ability to satisfy those obligations, including the 2.625% Convertible Senior Notes due December 2027.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks related to the ownership of our common stock.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks related to pending or future securities litigation or claims that we have otherwise engaged in wrongdoing.

**NOTE REGARDING COMPANY REFERENCES**

Unless the context otherwise requires, references to the "Company," "our Company," "Lantheus," "we," "us" and "our" refer to Lantheus Holdings, Inc. and its direct and indirect wholly-owned subsidiaries; references to "Lantheus Holdings" refer to Lantheus Holdings, Inc. and not to any of its subsidiaries; references to "Lantheus Medical" refer to Lantheus Medical Imaging, Inc., the wholly-owned subsidiary of Lantheus Holdings; references to "Aphelion," "Lantheus Alpha" and "Meilleur" refer to Aphelion LLC, Lantheus Alpha Therapy, LLC and Meilleur Technologies, Inc., respectively, each a wholly-owned subsidiary of Lantheus Holdings; references to "Cerveau," "Lantheus Real Estate," "Progenics," "Evergreen," "Lantheus Radiopharm UK", and "Lantheus Switzerland," refer to Cerveau Technologies, Inc.; Lantheus MI Real Estate, LLC; Progenics Pharmaceuticals, Inc.; Evergreen Theragnostics, Inc.; Lantheus Radiopharmaceuticals UK Limited and Lantheus Switzerland GmbH, respectively, each a wholly-owned subsidiary of Lantheus Medical, references to "EXINI" refer to EXINI Diagnostics AB, a wholly-owned subsidiary of Progenics, and references to "Life Molecular" refer to Life Molecular Imaging Limited (now renamed as Lantheus Biosciences Ltd.), a wholly-owned subsidiary of Lantheus Radiopharm UK.

**NOTE REGARDING TRADEMARKS**

We own or have the rights to various trademarks, service marks and trade names, including, among others, the following: PYLARIFY<sup>®</sup>, DEFINITY<sup>®</sup>, Neuraceq<sup>®</sup> and Find Fight and Follow<sup>®</sup> referred to in this Form 10-K. Solely for convenience, we refer to trademarks and service marks in this Form 10-K without the TM, SM and® symbols. Those references are not intended to indicate, in any way, that we will not assert, to the fullest extent permitted under applicable law, our rights to our trademarks and service marks. Each trademark, trade name or service mark of any other company appearing in this Form 10-K is, to our knowledge, owned by that other company.

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**PART I**

**Item 1. Business**

**Overview**

We are the leading radiopharmaceutical-focused company committed to enabling clinicians to Find, Fight and Follow disease to deliver better patient outcomes. We classify our products into three product categories: Radiopharmaceutical Oncology, Precision Diagnostics, and Strategic Partnerships and Other Revenue. Our Radiopharmaceutical Oncology product helps healthcare professionals ("HCPs") Find, Fight and Follow cancer. Our Precision Diagnostic products assist HCPs to Find and Follow diseases. Our Strategic Partnerships include biomarkers and digital solutions in support of our partners' therapeutic development, out-licensing agreements for non-core assets and optimization of our assets geographically, and contract development and manufacturing organization ("CDMO") revenue generated by Evergreen.

Our commercial products are used by cardiologists, internal medicine physicians, neurologists, nuclear medicine physicians, oncologists, radiologists, sonographers, technologists, and urologists working in a variety of clinical settings. We believe that our diagnostic products provide information that enables HCPs to better detect and characterize, or rule out, disease, with the potential to achieve better patient outcomes, reduce patient risk, and limit overall costs.

We produce and market our products throughout the United States (the "United States" or the "U.S."), selling primarily to hospitals, independent imaging centers and government facilities. We generally sell our products outside the United States through a combination of direct distribution and third-party distribution relationships in Europe, Canada, Australia, Asia-Pacific, Central America and South America and by licensing exclusive rights to develop and commercialize certain products outside the United States.

We are headquartered in Massachusetts, with offices in New Jersey, Canada, Germany, Switzerland, Sweden and the United Kingdom.

**Leadership Transition Plan**

Effective November 7, 2025, Mary Anne Heino, the Chair of our Board of Directors (the "Board"), was appointed to serve as our Executive Chair and principal executive officer. Additionally, on January 1, 2026 (the "Effective Date") Ms. Heino became our Chief Executive Officer ("CEO"), following the retirement of our former CEO, Brian Markison, on December 31, 2025. Ms. Heino will serve as CEO until such time as the Board completes the comprehensive search process that it initiated to identify and appoint the Company's next CEO. Mr. Markison has agreed to serve as a strategic advisor to the Company through at least March 31, 2026.

**2025 Transactions**

During 2025, we announced multiple strategic transactions, which shape and sharpen our strategic focus within the radiopharmaceutical industry. A brief description of these transactions is summarized below.

***Sale of SPECT Business***

On January 1, 2026, we completed the sale of our single-photon emission computerized tomography ("SPECT") business to SHINE Technologies, LLC ("SHINE"), a wholly-owned subsidiary of Illuminated Holdings, Inc., for total consideration of up to $155.0 million, consisting of cash, a convertible installment note, a term note and contingent earnout payments. Under the terms of the definitive agreement, SHINE acquired the assets and liabilities associated with our SPECT business, including its approved products (TechneLite, NEUROLITE, Xenon Xe-133 Gas, and Cardiolite), the portion of the North Billerica, Massachusetts campus that manufactured our SPECT products and the SPECT-related Canadian operations. The transaction allows us to focus on growing our commercial portfolio of innovative positron emission tomography ("PET") radiodiagnostics and microbubbles, while prioritizing innovative PET radiodiagnostics.

***Acquisition of Life Molecular Imaging Limited***

On July 21, 2025, we acquired Life Molecular, pursuant to the terms of the Sale and Purchase Agreement with Life Medical Group Limited ("Life Medical") and Life Healthcare Group Holdings Limited (the "Sale and Purchase Agreement" and, such acquisition, the "LMI Acquisition"). Life Molecular, headquartered in Berlin, Germany, possesses an Alzheimer's disease radiodiagnostic commercial infrastructure, research and development capabilities, and an established international footprint. The LMI Acquisition included Neuraceq, an Alzheimer's disease radiodiagnostic. Neuraceq is commercially approved in the United States, Canada, the European Union, the United Kingdom, Switzerland, China, Japan, South Korea, and Taiwan.

As consideration for the LMI Acquisition, we remitted a total upfront payment of $352.9 million in cash, after working capital-related settlements, and could be required to pay up to an additional $400.0 million in potential earn-out and milestone payments.

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Previously, on July 3, 2024, we had acquired from Life Molecular the global rights to RM2, its clinical stage, gastrin-releasing peptide receptor ("GRPR")-targeting agent, including the associated novel, clinical-stage radiotherapeutic and radiodiagnostic pair, previously referred to as 177Lu-DOTA-RM2 and 68Ga-DOTA-RM2 (and which we now refer to as LNTH-2402 and LNTH-2401, respectively), for an upfront payment of $35.0 million plus a $1.0 million payment made prior to the acquisition (the "RM2 Asset Purchase"), pursuant to the Sublicense, Development and Collaboration Agreement, by and between us and Life Molecular, dated as of June 27, 2024 (the "RM2 Sublicense Agreement").

In connection with the LMI Acquisition, the RM2 Sublicense Agreement was amended to (i) reduce the contingent regulatory and development milestones by €45.0 million; (ii) assign the right to future payments from Life Molecular to its former parent, Life Medical; and (iii) eliminate certain other non-substantive rights contained in the RM2 Sublicense Agreement (the "RM2 Amendment"). We may be required to pay Life Medical additional milestone payments and royalties in connection with the RM2 Asset Purchase.

For more information on the acquisition of the global rights to RM2, see Note 19,*"Acquisitions"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

In February 2026, we renamed Life Molecular to Lantheus Biosciences Ltd.

***Acquisition of Evergreen Theragnostics, Inc.***

On April 1, 2025, we acquired all the issued and outstanding shares of Evergreen by means of a statutory merger of our subsidiary with and into Evergreen, with Evergreen surviving as our wholly-owned subsidiary (the "Evergreen Merger"), pursuant to the terms of the Agreement and Plan of Merger (the "Evergreen Merger Agreement") with Evergreen and Shareholder Representative Services LLC. Evergreen is a clinical-stage radiopharmaceutical company engaged in CDMO services as well as drug discovery and commercialization of proprietary products.

As consideration for the Evergreen Merger, we made an upfront payment of $276.4 million in cash. In the event of achievement of specified milestones, we would be required to pay up to an additional $727.5 million in cash, which may be adjusted pursuant to the terms of the Evergreen Merger Agreement.

For more information, see Note 19, "*Acquisitions"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Annual Report on Form 10-K ("Form 10-K").

**Other Notable Transactions**

Prior to 2025, we executed on some additional transactions that are notable to our business, including the following:

***Acquisition of NAV-4694***

On June 18, 2024, we acquired Meilleur, including its asset NAV-4694, an investigational late-stage F-18-labeled PET imaging agent that targets beta amyloids in Alzheimer's disease. Under the terms of the agreement, we paid the stockholders of Meilleur ("Meilleur Stockholders") an upfront payment of $32.9 million and an additional $10.0 million payment in August 2024 after the successful completion of a technology transfer. We could pay additional milestone payments upon achievement of specified U.S. regulatory milestones related to NAV-4694. We could also pay double-digit milestone payments upon achievement of specified annual commercial sales and double-digit royalty payments for research revenue and commercial sales. Research revenue is derived from partnerships with pharmaceutical companies and academic institutions that use NAV-4694 in clinical trials. In May 2025, we paid AstraZeneca AB ("AstraZeneca"), a $10.0 million one-time, non-refundable upfront payment to reduce the future royalty obligations owed to AstraZeneca, pursuant to a license agreement between AstraZeneca and Meilleur related to NAV-4694.

For more information, see Note 19, *"Acquisitions"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

***Radiopharm Theranostics Limited***

On June 15, 2024, we entered into an agreement with Radiopharm Theranostics Limited ("Radiopharm") to acquire all of Radiopharm's rights to two licensed preclinical assets for an upfront payment of $2.0 million (the "Radiopharm Asset Purchase"). We acquired global, exclusive rights to both a leucine-rich repeat-containing protein 15 ("LRRC15")-targeted radiotherapeutic, which we refer to as LNTH-2403, and a Trophoblast cell surface antigen-2 ("TROP2")-targeted radiodiagnostic, which we refer to as LNTH-2404, each of which is a preclinical therapeutic candidate. LNTH-2403 is our pre-clinical therapeutic targeting LRRC15, which is strongly expressed in multiple malignancies, including head and neck, breast, lung, and pancreatic cancers.

In connection with this acquisition, we assumed the underlying license agreements related to the two preclinical assets, together with their respective milestone and royalty payment obligations.

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During the third quarter of 2024, we purchased 149,625,180 shares of Radiopharm common stock ("Radiopharm Shares"), for an aggregate purchase price of approximately $5.0 million. During 2025, we purchased an aggregate additional 388,333,333 Radiopharm Shares for an aggregate purchase price of approximately $10.0 million.

For more information, see Note 19, "*Acquisitions"* and Note 4*,* "*Fair Value of Financial Instruments"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

***Strategic Agreements with Perspective Therapeutics, Inc.***

On January 8, 2024, we entered into multiple strategic agreements with Perspective Therapeutics, Inc. ("Perspective"), a radiopharmaceutical company that is pursuing advanced treatment applications for cancers throughout the body. Under the agreements, we obtained an option to exclusively license Perspective's Pb212-VMT-α-NET, a clinical stage alpha therapy in development for the treatment of neuroendocrine tumors, and an option to co-develop certain early-stage therapeutic candidates targeting prostate cancer using Perspective's innovative platform technology for an aggregate upfront payment of $28.0 million in cash.

On March 1, 2024, we transferred the fixed assets and associated lease of our Somerset, New Jersey facility to Perspective, and the parties entered into a transition services arrangement pursuant to which we provided to Perspective certain services relating to final disposal of radioactive waste and certain other related services.

During 2024, we also purchased an aggregate of 11,677,339 shares of Perspective's common stock, after giving effect to a 1-for-10 reverse stock split, for $57.4 million.

For more information, see Note 19, *"Acquisitions"* and Note 4, "*Fair Value of Financial Instruments"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

***Exclusive License for PNT2003***

On December 20, 2022, we announced the closing of a set of strategic collaborations with POINT Biopharma Global Inc. ("POINT"), in which we were granted a license to exclusive worldwide rights (excluding Japan, South Korea, China (including Hong Kong, Macau and Taiwan), Singapore, and Indonesia) to co-develop and commercialize, POINT's PNT2003 product candidate. PNT2003 is a somatostatin receptor ("SSTR") therapy with non-carrier added lutetium-177, which is in registration to treat patients with SSTR-positive neuroendocrine tumors.

On December 27, 2023, Lilly announced the completion of its acquisition of POINT. The acquisition did not impact the status of the license agreements related to the work being performed in connection with our license agreements and our collaboration with POINT.

POINT is responsible for curating all data, analysis and other information necessary for regulatory approval, and supporting us in the preparation of regulatory filings for PNT2003. We are responsible for preparing for and seeking regulatory approval of all such applications, as well as performing and funding all future development and commercialization following such approval. POINT will be responsible for all manufacturing of PNT2003, subject to certain exceptions described in the license and collaboration agreement between our subsidiary, Lantheus Three and POINT, dated November 11, 2022 (the "PNT2003 License Agreement").

On January 11, 2024, we announced that our Abbreviated New Drug Application ("ANDA") for PNT2003 had been accepted for filing by the U.S. Food and Drug Administration ("FDA"). On January 26, 2024, we were sued in the District Court for the District of Delaware by Advanced Accelerator Applications USA, Inc. and Advanced Accelerator Applications SA, each a Novartis entity, for patent infringement in response to our ANDA filing and Paragraph IV certification, consistent with the process established by the Hatch-Waxman Act. In December 2025, the court conducted its trial. As of the date of this Form 10-K, we are currently waiting for the court to issue its decision. Under the terms of the Hatch-Waxman Act, full FDA approval of our ANDA filing could be subject to a stay of up to 30 months. If our filing is stayed for the full 30-month period and we are successful in obtaining FDA approval, we could launch PNT2003 in 2026, although there can be no assurance of that approval or timing. Upon approval, we believe PNT2003 will be the first radioequivalent to lutetium Lu 177 dotatate, which is indicated for the treatment of somatostatin receptor-positive gastroenteropancreatic neuroendocrine tumors ("GEP-NETs"), including foregut, midgut, and hindgut neuroendocrine tumors. We define radioequivalent as a radiopharmaceutical whose mechanism of action is determined to be equivalent to that of the reference product by the FDA, or a similar regulator outside the United States.

For more information, see Note 19, *"Acquisitions"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

**Our Portfolio of Commercial Products and Other Sources of Revenue**

**<u>Radiopharmaceutical Oncology</u>**

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Our commercial product in our Radiopharmaceutical Oncology category is:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•PYLARIFY (also known as piflufolastat F-18, 18F-DCFPyL or PyL), an F-18-labeled PET imaging agent targeting PSMA used with PET/computed tomography ("CT") approved by the FDA in May 2021 and commercially launched in the United States in June 2021. PYLARIFY is indicated for PET imaging of PSMA-positive lesions in men with prostate cancer with suspected metastasis who are candidates for initial definitive therapy and in patients with suspected recurrence based on elevated prostate-specific antigen ("PSA") levels. PYLARIFY is available through a diverse, multi-partner network of PMFs, including both commercial and academic partners.

**<u>Precision Diagnostics</u>**

Our commercial products in our Precision Diagnostics category include the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•DEFINITY, an injectable ultrasound enhancing agent with perflutren-containing lipid microspheres, or microbubbles, which is used in echocardiography exams. The indication for DEFINITY in the United States is for use in adult and pediatric patients with suboptimal echocardiograms to opacify the left ventricular chamber and to improve the delineation of the left ventricular endocardial border.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Neuraceq, an F-18 labeled PET imaging agent that binds selectively to beta-amyloid plaques in the brain, was approved by the FDA in 2014. Neuraceq is a radioactive diagnostic drug indicated for PET imaging of the brain to estimate amyloid beta neuritic plaque density in adults with cognitive impairment who are being evaluated for Alzheimer's disease and other causes of cognitive decline, and selection of patients who are indicated for amyloid beta-directed therapy as described in the prescribing information of the therapeutics products.

On January 1, 2026, we sold our SPECT business to SHINE, including TechneLite, NEUROLITE, Xenon Xe-133 Gas, and Cardiolite, the commercial products associated with the SPECT business, which have historically been included as part of our Precision Diagnostics product category.

**<u>Strategic Partnerships and Other Revenue</u>**

Our commercial products in our Strategic Partnerships and Other Revenue product category include the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Automated Bone Scan Index ("aBSI") automatically calculates the disease burden of prostate cancer by detecting and classifying bone scan tracer uptakes as metastatic or benign lesions using an artificial neural network. aBSI is FDA cleared and received a European Conformity Marking ("CE Mark").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•aPROMISE, or PYLARIFY AI, is AI medical device software that is designed to allow HCPs and researchers to perform standardized quantitative assessment of PSMA PET/CT images in prostate cancer, including those images obtained by using PYLARIFY.

Our Strategic Partnerships and Other Revenue, also includes revenue derived from partnerships with pharmaceutical companies and academic institutions that use our commercial or investigational products in clinical trials as research tools, as well as royalties and other milestone payments received from our strategic partners that have commercialized products pursuant to license arrangements with us, as well as CDMO revenue generated by Evergreen. For example, flurpiridaz is an F-18-based PET myocardial perfusion imaging ("MPI") agent that we have licensed to GE HealthCare Limited ("GE Healthcare"). Flurpiridaz was approved by the FDA in 2024 under the name Flyrcado for PET MPI under rest or stress (pharmacologic or exercise) in adults with known or suspected coronary artery disease ("CAD") to evaluate for myocardial ischemia and infarction. We have also licensed our piflufolastat F-18 PET imaging agent (marketed in the United States as PYLARIFY) to GE Healthcare in Japan for prostate cancer diagnostics and companion diagnostic use. Under the terms of the agreement, GE Healthcare paid us an upfront license fee and will pay us development milestones and tiered royalties based on product sales in Japan. Similarly, RELISTOR (methylnaltrexone bromide) is a treatment for opioid-induced constipation that decreases the constipating side effects induced by opioid pain medications such as morphine and codeine without diminishing their ability to relieve pain. RELISTOR is approved in two forms: a subcutaneous injection and an oral tablet. In 2011 Progenics licensed methylnaltrexone ("MNTX") and products containing MNTX, including both approved forms of RELISTOR, to Salix Pharmaceuticals, Inc., an affiliate of Bausch Health Companies, Inc. ("Bausch") and on August 2, 2023, we sold the right to the RELISTOR net sales royalties under that license agreement and retained the rights to future sales-based milestone payments. In addition, we have licensed Neuraceq to partners in selected markets including China, Japan, and South Korea. We receive sales-based royalties and milestone payments from these license agreements.

**Additional Information about our Product Categories**

**<u>Radiopharmaceutical Oncology</u>**

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PYLARIFY is a widely utilized radiopharmaceutical diagnostic agent indicated for PET imaging of prostate-specific membrane antigen ("PSMA")-positive lesions in patients with prostate cancer with suspected metastasis who are candidates for initial definitive therapy and in patients with suspected recurrence based on elevated PSA levels. PYLARIFY works by binding to PSMA, a protein that is overexpressed on the surface of more than 90% of primary and metastatic prostate cancer cells. PYLARIFY works with PET/CT technology to produce a combined scan that enables the scan reader to detect and locate the disease.

According to the American Cancer Society, prostate cancer is the second most common cancer in American men - one in eight American men will be diagnosed with prostate cancer in their lifetimes and over 3.7 million American men are currently living with prostate cancer.

PYLARIFY is manufactured on a diverse, F-18 distributor supply network of PMFs, ensuring convenient and reliable supply. After being made on a cyclotron at a PMF, the F-18 is then combined with certain chemical ingredients in specially designed chemistry synthesis boxes to manufacture PYLARIFY. The finished PYLARIFY is then quality control tested and transferred to a radiopharmacist who prepares and dispenses patient-specific doses of the final product. Because each PMF manufacturing PYLARIFY is deemed by the FDA to be a separate manufacturing site, each is separately approved by the FDA. We have a broad network of PMF manufacturing sites that provides geographic breadth, out-the-door time flexibility and added supply optionality, and we distribute doses of PYLARIFY to customers in 48 of 50 states, the District of Columbia and Puerto Rico.

In addition to our network of commercial PMFs, we also work with academic medical centers in the United States that have radioisotope-producing cyclotrons and that have expressed an interest in manufacturing PYLARIFY. For this initiative, we enter into a fee-for-service arrangement under which the academic medical center manufactures F-18 on its cyclotron and completes the manufacturing process for PYLARIFY. PYLARIFY can then be used by the academic medical center itself, and in some cases distributed to other customers under separate purchase agreements.

Our Healthcare Procedure Coding System code, which enables streamlined billing, went into effect as of January 1, 2022 and the Centers for Medicare & Medicaid Services ("CMS") granted transitional pass-through payment status ("TPT Status") in the hospital outpatient setting for PYLARIFY, enabling traditional Medicare fee-for-service ("FFS") to provide separate payment for PYLARIFY in addition to the payment for the PET/CT procedure in that setting. TPT Status for PYLARIFY expired on December 31, 2024.

In November 2024, CMS released the final rule for its calendar year 2025 Medicare Hospital Outpatient Prospective Payment System (the "CMS 2025 OPPS Rule"), which recognizes the value and need for broad access in diagnostic radiopharmaceuticals. The CMS 2025 OPPS Rule provided separate payment for those diagnostic radiopharmaceuticals with per day costs greater than $630 based on their mean unit cost ("MUC"). In November 2025, CMS released the final rule for its calendar year 2026 Medicare Hospital Outpatient Prospective Payment System (the "CMS 2026 OPPS Rule"), which continues to provide for separate payment for diagnostic radiopharmaceuticals with per day costs greater than $655 based on their MUC. As a result, since January 1, 2025, CMS has maintained separate payment for PYLARIFY after the expiration of TPT Status for patients with traditional Medicare FFS insurance coverage who are treated in the hospital outpatient setting. The calendar year 2026 payment rate for PYLARIFY is listed in Addendum B of the CMS 2026 OPPS Rule. We plan to continue working with CMS on the potential adoption of payment based on Average Sales Price ("ASP") rather than MUC in the future. We have been reporting ASP since our first dose sold, helping to provide a clear path forward for CMS to potentially make payments based on ASP instead of MUC.

The continued substantial revenue contribution from PYLARIFY will depend on our ability to clinically and commercially differentiate PYLARIFY from other products on the market and to maintain PYLARIFY as a widely utilized PSMA PET imaging agent in a competitive space. PYLARIFY's current competition includes three Gallium-68 ("Ga-68")-based PSMA imaging agents, an F-18-based PSMA imaging agent, and other non-PSMA-based imaging agents commonly referred to as conventional imaging. The potential for future generic entrants to the market as a result of the expiry of PYLARIFY's five-year new chemical entity ("NCE") exclusivity period in May 2026, on the fifth anniversary of the FDA's approval, as well as the ongoing development of additional F-18 and Ga-68 tracers and new PSMA-isotopes, particularly Copper-64, could generate increased competition for PYLARIFY. Continued substantial revenue contribution from PYLARIFY will also depend on our ability to differentiate PYLARIFY, including through flexible and dependable access to PYLARIFY nationally, a best-in-class customer experience and through strategic contracts.

We actively pursue patents in connection with PYLARIFY, both in the United States and internationally. In the United States for PYLARIFY, we have patents listed in the FDA's publication, "*Approved Drug Products with Therapeutic Equivalence Evaluations"* (the "Orange Book"), including composition of matter patents, the last of which expires in 2037. Outside of the United States, we have, and are currently pursuing, additional patents related to piflufolastat F-18 to obtain similar patent protection as in the United States.

In August 2025, we announced that the FDA had accepted our New Drug Application ("NDA") for a new formulation of our F-18 PSMA PET imaging agent, filed by our subsidiary Aphelion, and that the FDA has set a Prescription Drug User Fee Act ("PDUFA") target action date of March 6, 2026. The new formulation was designed to enhance product stability and increase batch production, with the potential to enhance supply flexibility and improve operating leverage across the network. If the NDA

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is approved, we plan to work closely with clinicians and PMF sites to ensure a smooth rollout of the new formulation, including providing clear guidance on ordering, handling, and clinical use to support continuity of care for patients, and we plan to apply for reimbursement from CMS for the new formulation, including seeking three years of TPT Status.

See Part I, Item 1A. *"Risk Factors"* for information regarding certain risks associated with PYLARIFY and Part II, Item 7. "*Management's Discussion and Analysis of Financial Condition and Results of Operations - Comparison of the Periods Ended December 31, 2025 and 2024 - Revenues"* of this Form 10-K for further information on total revenue contributed by PYLARIFY since its approval.

**<u>Precision Diagnostics</u>**

***DEFINITY***

DEFINITY is the most utilized ultrasound enhancing agent in the United States and is indicated for use in adult and pediatric patients with suboptimal echocardiograms to opacify the left ventricular chamber and to improve the delineation of the left ventricular endocardial border. Numerous patient conditions can decrease the quality of images of the left ventricle, the primary pumping chamber of the heart. The term DEFINITY refers to both its activated and non-activated forms.

DEFINITY is a clear, colorless, sterile liquid that, upon activation in a VIALMIX or VIALMIX RFID, medical devices specifically designed for DEFINITY, becomes a homogenous, opaque, milky white injectable suspension of perflutren-containing lipid microspheres. After activation and intravenous injection, DEFINITY opacifies the left ventricular chamber and improves the delineation of the left ventricular endocardial border, or innermost layer of tissue that lines the chamber of the left ventricle. Better visualization of the left ventricle allows clinicians to make more informed decisions about disease status.

Based on estimates from third party sources, we believe there were approximately 28 to 30 million echocardiograms performed in the United States in 2024 (the latest time period for which full year data is available). Assuming that between 20% and 30% of echocardiograms produce suboptimal images, as stated in the clinical literature, we estimate that approximately 5 to 9 million echocardiograms in 2024 produced suboptimal images.

Since its launch in 2001, DEFINITY has been used in imaging procedures in approximately 33 million echocardiograms throughout the world. In March 2024, we received FDA approval for our supplemental application for the use of DEFINITY in pediatric patients with suboptimal echocardiograms. The FDA decision was based on usage data from three pediatric clinical trials conducted with DEFINITY. We estimate that, as of December 31, 2025, DEFINITY had over 80% share of the U.S. segment for ultrasound enhancing agents in echocardiography procedures. DEFINITY currently competes with two other FDA-approved ultrasound enhancing agents, as well as echocardiography without the use of ultrasound enhancing agents and non-echocardiography imaging modalities from GE Healthcare and Bracco Diagnostics Inc. ("Bracco"). DEFINITY and the other FDA-approved ultrasound enhancing agents all carry an FDA-required boxed warning, which has been modified over time, to notify physicians and patients about potentially serious safety concerns or risks posed by the products. See Part I, Item 1A. *"Risk Factors-Ultrasound enhancing agents may cause side effects which could limit our ability to sell DEFINITY,"* of this Form 10-K for more information.

We continue to prosecute and maintain patents and patent applications in connection with DEFINITY, both in the United States and internationally. In the United States for DEFINITY, we have Orange Book-listed method-of-use patents, the last of which expires in 2037, as well as additional manufacturing patents that are not Orange Book-listed expiring in 2037. The Orange Book-listed patents include a patent on the use of VIALMIX RFID (see below), which expires in 2037; we have submitted VIALMIX RFID patent applications in major market countries and have received granted patents outside of the United States.

DEFINITY is activated through the use of medical devices branded as VIALMIX and VIALMIX RFID. The activation rate and time are controlled by VIALMIX RFID through the use of radio-frequency identification technology ("RFID") to ensure reproducible activation of DEFINITY. The RFID tag, which is affixed to the vial label, enables the DEFINITY vial to be appropriately activated with the VIALMIX RFID activation device. We rely on Jubilant HollisterStier ("JHS") as a significant supplier of DEFINITY. We also produce DEFINITY in our in-house manufacturing facility at our North Billerica campus.

See Part I, Item 1A. *"Risk Factors"* for information regarding certain risks associated with DEFINITY and Part II, Item 7. *"Management's Discussion and Analysis of Financial Condition and Results of Operations - Comparison of the Periods Ended December 31, 2025 and 2024 - Revenues"* for further information on revenue contributed by DEFINITY.

***Neuraceq***

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Similar to PYLARIFY, Neuraceq is manufactured by a nationwide network of PMFs with radioisotope-producing cyclotrons that make F-18, which has a 110-minute half-life, so Neuraceq is manufactured and distributed rapidly to end-users, and each PMF manufacturing site has to be separately approved by the FDA.

Neuraceq currently competes with two commercially available F-18 beta-amyloid-targeting PET imaging agents from Eli Lilly and Co ("Lilly") and GE Healthcare. Growth and revenue contribution of Neuraceq is dependent on (i) our ability to engage our existing PYLARIFY customers to introduce Neuraceq to those customers, (ii) expanded geographical access to Neuraceq, which in turn depends on our ability to increase Neuraceq manufacturing capacity at existing manufacturing sites and add

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additional sites, (iii) increased adoption and utilization of beta-amyloid PET and anti-amyloid therapeutics, (iv) increased utilization based on the updated Neuraceq prescribing information indicating that Neuraceq can be used for patient selection for anti-amyloid therapies where the prescribing information for the therapy so states, and (v) our ability to educate customers on the approved uses of Neuraceq, including its ability to quantify the degree of amyloid burden in the brain.

Our ability to grow revenue from Neuraceq is also dependent on our ability to clinically differentiate Neuraceq from competitive products so that customers choose Neuraceq for appropriate patients because of its clinical attributes and despite the disparity in MUC payment rates for Neuraceq compared to other products used for traditional Medicare patients in the hospital outpatient setting. MUC is an indirect measure of a product's cost based on hospital-reported claims data. We believe MUC, which is based on claims data available on a two-year lag, is a less accurate reflection of actual purchasing costs of the hospital than ASP is. Because the volume of claims for Neuraceq was lower than our competitors' volume in 2023, which was the year used by CMS to establish MUC-based reimbursement for 2025, our MUC calculation was dependent upon a fewer number of hospitals and fewer claims and was calculated at a lower rate than the rate established for our competitors' products. We have engaged with CMS on the potential adoption of payment based on ASP instead of MUC.

**Strategic Partnerships and Other Revenue**

***Biomarker Solutions***

Our Biomarker Solutions business focuses on advancing innovative imaging biomarker solutions, such as our Alzheimer's disease radiodiagnostic candidates, MK-6240, NAV-4694 and LNTH-2620, through collaborations with pharmaceutical companies and academic centers.

Our Biomarker Solutions business also includes our Microbubble Platform, in which we generally enter into collaborations with partners seeking to include our microbubble as part of a kit used with our partner's medical device for therapeutic applications. In these collaborations, our microbubble is generally intended to be used as a vehicle to deliver a therapeutic drug. Our Digital Solutions business focuses on developing and commercializing 510(k) cleared and CE Marked digital applications to enhance the performance of imaging agents; our Digital Solutions portfolio currently includes aBSI and aPROMISE.

*Oncology*

As we continue to pursue expanding strategic partnerships, our Biomarker Solutions activities in oncology include:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Prostate Cancer* – We collaborate with pharmaceutical companies developing therapies and diagnostics in prostate cancer.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Curium Pharma ("Curium") (our licensee for piflufolastat F-18 in Europe) is commercializing piflufolastat F-18 under the name PYLCLARI in Europe. In addition, we previously entered into an agreement with Curium to add PYLARIFY to its U.S. ECLIPSE trial, a multi-center, open-label, randomized Phase 3 trial comparing the safety and efficacy of Curium's PSMA-targeted therapeutic versus hormone therapy in patients mCRPC. PYLARIFY was being used to determine PSMA-avidity as part of patient selection.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•We previously entered into several other separate agreements, including with POINT and Regeneron Pharmaceuticals, Inc., under which we supplied PYLARIFY in connection with their clinical trials.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Pan-Oncology* - In collaboration with Ratio Therapeutics LLC (previously Noria Therapeutics, Inc.), we are developing LNTH-1363S, a novel copper-64 labeled PET imaging agent, targeting fibroblast activation protein alpha. We believe this diagnostic agent candidate could have broad potential applicability and use in oncology as well as inflammatory diseases. We completed a Phase 1 study for LNTH-1363S to evaluate the pharmacokinetics, biodistribution and radiation dosimetry in adult healthy volunteers and are now enrolling patients diagnosed with sarcoma in a Phase 1/2a study. We are also exploring the clinical utility of LNTH-1363S in lung and cardiac fibrosis in investigator-led studies.

*Microbubble Platform*

We previously entered into microbubble collaborations with strategic partners that are using our microbubbles in connection with the development of their medical devices. For example, CarThera SAS is developing SonoCloud, a proprietary implantable device in development for the treatment of recurrent glioblastoma that will be used in combination with our microbubbles. Similarly, Insightec Ltd. is developing a transcranial guided focused ultrasound device for the treatment of glioblastoma, as well as other neurodegenerative conditions, and such device will also be used in combination with our microbubbles.

*Neurology*

***MK-6240***

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MK-6240 is a registrational stage F-18 tau-targeted PET imaging agent designed to detect tau neurofibrillary tangle pathology in patients with cognitive impairment being evaluated for known or suspected Alzheimer's disease. During the second quarter of 2025, we announced that MK-6240 successfully met its co-primary endpoints in two pivotal studies assessing its sensitivity and specificity. The data from these two studies supported our NDA submission to the FDA. On October 27, 2025, we announced that the FDA had accepted our NDA for MK-6240, and the FDA has set a PDUFA target action date of August 13, 2026. MK-6240 is also being used as a biomarker in more than 100 ongoing academic and industry sponsored clinical trials, many for late-stage therapeutic candidates. Research revenue is derived from the use of MK-6240 in those clinical trials and includes milestone and dose-related payments.

***NAV-4694***

NAV-4694 is an investigational late-stage F-18-labeled PET imaging agent that targets beta amyloid in Alzheimer's disease. NAV-4694 is currently in Phase 3 development and is also being used in academic and industry sponsored clinical trials. Research revenue is derived from the use of NAV-4694 in those clinical trials and includes milestone and dose-related payments.

***LNTH-2620***

LNTH-2620 is a next-generation radioactive tracer used in PET scans to detect and visualize tau protein tangles in the brain, a key biomarker for Alzheimer's disease and other neurodegenerative disorders. LNTH-2620 is currently in a Phase 3 study.

***CDMO Business***

Through the Evergreen Merger, we acquired a current Good Manufacturing Practices ("cGMP") certified radiopharmaceutical manufacturing facility that provides end-to-end manufacturing services for alpha- and beta-emitting radiopharmaceuticals, from early clinical development through commercial supply. Our CDMO offerings include process and analytical method development, technology transfer, process validation, production of clinical and commercial batches, release and stability testing, and integrated quality oversight under fully electronic Quality Management and Laboratory Information Management Systems. In addition, we coordinate raw material sourcing, just-in-time logistics, and packaging to facilitate timely delivery of finished product globally. Our CDMO's strategic location near major transportation hubs enables reliable distribution for short half-life products and supports customers across diagnostic and therapeutic indications.

***RELISTOR Royalty***

On August 2, 2023, we sold our right to our RELISTOR net sales royalty asset under our license agreement with Bausch; we retained the rights to future sales-based milestone payments. We received an initial payment in 2023 of approximately $98.0 million in connection with the sale and earned additional consideration of $5.0 million in 2025 as a result of the achievement of a sales-based milestone. Pursuant to our license agreement with Bausch, we are eligible to receive one-time sales milestone payments upon achievement of specified United States. net sales targets, including:

---

| | |
|:---|:---|
| **U.S. Net Sales Levels in any Single Calendar Year** | **Payment** |
| In excess of $150 million | $15.0 million |
| In excess of $200 million | $20.0 million |
| In excess of $300 million | $30.0 million |
| In excess of $750 million | $50.0 million |
| In excess of $1 billion | $75.0 million |

---

During the fourth quarter of 2023, we earned the sales-based milestone payments listed above of $15.0 million. We did not earn any sales-based milestone payments from Bausch in 2024 or 2025. Each sales milestone payment is payable one time only, regardless of the number of times the condition is satisfied. The remaining milestone payments could be made within the same calendar year if the highest sales levels were reached in any single calendar year.

***Other Strategic Partnerships and Other Revenue Sources***

*aBSI*

aBSI automatically calculates the disease burden of prostate cancer by detecting and classifying bone scan tracer uptakes as metastatic or benign lesions using an artificial neural network. The cloud based aBSI was made available for clinical use in the United States on August 5, 2019. In February 2020, Progenics received a CE Mark for the standalone workstation model of aBSI, meeting the quality standards set by the European Economic Area. In September 2020, the FDA granted 510(k) clearance for the use of aBSI as software-as-a-medical device on a GE Healthcare imaging system.

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*aPROMISE, or PYLARIFY AI*

aPROMISE, or PYLARIFY AI is an FDA-cleared AI medical device software that is designed to allow healthcare professionals and researchers to perform standardized quantitative assessment of PSMA PET/CT images in prostate cancer, including those images obtained by using PYLARIFY. Our subsidiary, EXINI, was granted 510(k) clearance by the FDA in the United States and received a CE Mark in Europe for aPROMISE, which is available under the name PYLARIFY AI in the United States.

*Flurpiridaz*

In 2017, we entered into a definitive, exclusive global Collaboration and License Agreement with GE Healthcare for development and worldwide commercialization of flurpiridaz, an F-18-based PET MPI agent designed to assess blood flow to the heart in patients suspected of CAD. Under the agreement, we received an upfront cash payment of $5.0 million and are eligible to receive up to $60.0 million in regulatory and sales milestone payments, tiered double-digit royalties on U.S. sales, and mid-single digit royalties on sales outside of the United States. In September 2024, GE Healthcare announced that it had received FDA approval of flurpiridaz under the name Flyrcado for coronary artery disease diagnosis and confirmed launch and availability of Flyrcado in April 2025.

*Exclusive License for Prostate Cancer Imaging Agent Piflufolastat F-18 in Japan*

On September 24, 2025, we announced an exclusive licensing agreement for GE Healthcare to develop, manufacture, and commercialize our piflufolastat F-18 PET imaging agent (marketed in the United States as PYLARIFY) in Japan for prostate cancer diagnostics and companion diagnostic use. Under the terms of the agreement, GE Healthcare paid us an upfront license fee and will pay us development milestones and tiered royalties based on product sales in Japan.

See Part I, Item 1A. *"Risk Factors"* for information regarding certain risks associated with our strategic activities.

**Our Clinical Development Candidates**

In addition to our commercial products and strategic partnerships with third parties, we also have ongoing clinical development programs, including the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**LNTH-1363S** is an investigational fibroblast activation protein-alpha targeting, copper-64 labeled PET imaging agent candidate that we believe could have broad potential imaging applicability and use in oncology and fibrosis. We completed a Phase 1 study for LNTH-1363S to evaluate the pharmacokinetics, biodistribution and radiation dosimetry in adult healthy volunteers and are now enrolling patients diagnosed with sarcoma in a Phase 1/2a study. We are also exploring the clinical utility of LNTH-1363S in lung and cardiac fibrosis in investigator-led studies.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**LNTH-2401**, also known as 68Ga-DOTA-RM2, is a novel radiodiagnostic targeting the GRPR. We expect LNTH-2401 could be used both as a standalone diagnostic imaging agent and as a companion diagnostic to LNTH-2402.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**LNTH-2402**, also known as 177Lu-DOTA-RM2, is a novel GRPR targeted radiotherapeutic for solid tumors including prostate, breast, lung and other cancers. GRPR is a member of the bombesin G protein-coupled receptor family, which has been found to be overexpressed in multiple cancers. First-in-human dosimetry showed a favorable safety and dosimetry profile and confirmed preclinical data demonstrating dose-dependent efficacy of LNTH-2402. We submitted investigational new drug ("IND") applications in support of a Phase 1b/2 clinical trial with the LNTH-2401/LNTH-2402 theranostic pair in prostate cancer patients in the fourth quarter of 2025.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**LNTH-2403**, is an LRRC15-targeted radiotherapeutic. It received Orphan Drug and Rare Pediatric Disease designation from the FDA for the treatment of osteosarcoma. We initiated a Phase 1/2 clinical trial in patients with relapsed/refractory osteosarcoma.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**LNTH-2404** is a TROP2-targeted radiodiagnostic, an intracellular calcium signal transducer that is overexpressed in various types of adenocarcinomas with minimal expression in normal tissues and is associated with tumor aggressiveness, poor prognosis and drug resistance.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**LNTH-2501** is a diagnostic kit for the preparation of Ga-68 edotreotide injection, which has been studied for use with PET imaging for localization of somatostatin receptor-positive neuroendocrine tumors in adult and pediatric patients. On October 30, 2025, we announced that the FDA has set a PDUFA target action date of March 29, 2026 for LNTH-2501.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**LNTH-2515** (florbetaben F-18 injection), which is approved in the United States and certain other countries for a different indication and is commercialized under the brand name Neuraceq, is being developed for the diagnosis of amyloid light chain and transthyretin cardiac amyloidosis. The FDA has granted Fast Track designation for the development of LNTH-2515 imaging in these indications.

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**MK-6240** is a registrational stage F-18-labeled PET imaging agent that targets tau tangles in Alzheimer's disease. The FDA has accepted our NDA for MK-6240 and set a PDUFA target action date of August 13, 2026. MK-6240 is also being used in over 100 ongoing academic and industry trials, many for late-stage therapeutic candidates.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**NAV-4694** is an investigational late-stage F-18-labeled PET imaging agent that targets beta amyloid in Alzheimer's disease, NAV-4694 is currently in Phase 3 development and is also being used in academic and industry sponsored clinical trials.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**PNT2002** is an investigational PSMA-targeted radiopharmaceutical therapy for the treatment of mCRPC. The Phase 3 registrational clinical trial for PNT2002, known as the "SPLASH" study, reached 100% of prespecified overall survival events. The results of the readout were comparable to the previously reported 46% and 75% readouts and remain confounded by the overwhelming number of patients who crossed over within the study to receive PNT2002. While we continue to review the available PNT2002 data, we do not currently plan to pursue an NDA or further invest in this asset.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•**PNT2003** is an investigational SSTR therapy with non-carrier added lutetium-177, which is in registration to treat patients with SSTR-positive neuroendocrine tumors. On January 11, 2024, we announced that our ANDA for PNT2003, which included Paragraph IV certification, was accepted for filing by the FDA. Pursuant to the procedure set forth in the Hatch Waxman Act, we were sued for patent infringement by Advanced Accelerator Applications USA, Inc. and Advanced Accelerator Applications SA, each a Novartis entity. See Part I, Item 1. *"Business - Other Notable Transactions - Exclusive License for PNT2002 & PNT2003 - PNT2003,"* for more information on the litigation.

For the years ended December 31, 2025, 2024 and 2023, we invested $177.3 million, $168.1 million and $77.7 million in research and development ("R&D"), respectively, primarily related to our clinical development candidates. In addition to our clinical development group, our R&D team also includes our Medical Affairs, Regulatory, Clinical Operations, Research and Pharmaceutical Development, and Isotope Strategy functions.

See Part I, Item 1A. *"Risk Factors"* for information regarding certain risks associated with our strategic partnerships and clinical development programs.

**Distribution, Marketing and Sales**

The following table sets forth certain key market information for each of our commercial pharmaceutical products within each product category:

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| | |
|:---|:---|
| **Product** | **Approved Markets** |
| **<u>Radiopharmaceutical Oncology</u>** |  |
| PYLARIFY | European Union\*, United States |
| **<u>Precision Diagnostics</u>** |  |
| DEFINITY (or LUMINITY) | Australia, Canada, China, European Union, European Economic Area, Israel, New Zealand, United Kingdom, United States |
| Neuraceq | Canada, China, European Union, Japan, South Korea, Switzerland, Taiwan, United States, United Kingdom |

---

\*Approved under the name PYLCLARI and licensed to Curium.

With respect to our medical devices:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Progenics received a CE Mark for the standalone workstation model of aBSI, meeting the quality standards set by the European Economic Area. In September 2020, the FDA granted 510(k) clearance for the use of aBSI as software-as-a-medical device on a GE Healthcare imaging system.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•EXINI was granted 510(k) clearance by the FDA in the United States and received a CE Mark in Europe for aPROMISE, which is available under the name PYLARIFY AI in the United States.

PYLARIFY sales are generated in the United States through an internal PYLARIFY sales team, as well as a sales team at some of our PMF partners. Sales of DEFINITY are generated in the United States through an internal DEFINITY sales team. Sales of Neuraceq are generated in the United States through an internal Neuraceq sales team and in European markets through a third-party distributor. We have licensed RELISTOR to Bausch, and while we have sold the right to our RELISTOR net sales royalties under our license agreement, we have retained the rights to future sales-based milestone payments generated by Bausch.

Flyrcado is licensed to GE Healthcare and we are entitled to milestone and royalty-based payments for Flyrcado.

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**Seasonality**

We have some modest seasonality for our products as patients may seek to schedule diagnostic imaging and other procedures less frequently during the summer vacation months and over the year-end holidays.

**Customers**

No customer accounted for greater than 10% of revenues for the years ended December 31, 2025, 2024, and 2023.

**Backlog**

Our backlog consists of orders for which a delivery schedule within the next twelve months has been specified. Orders included in backlog may be canceled or rescheduled by customers at any time. We do not believe that our backlog at any particular time is meaningful because it has historically been immaterial relative to our consolidated revenues and is not necessarily indicative of future revenues for any given period.

**Competition**

We believe that our key product characteristics, such as proven efficacy, reliability and safety, coupled with our core competencies, such as our efficient manufacturing processes, our established distribution network, our experienced field sales organization and our customer service focus, as well as our expanding product portfolio, are important factors that distinguish us from our competitors.

The markets for our products are highly competitive and continually evolving. Our competitors for our current commercial products and leading clinical development candidates include large, global companies that are more diversified than we are and that have substantial financial, manufacturing, sales and marketing, distribution and other resources.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For PYLARIFY, our principal competitors are currently Telix Pharmaceuticals Limited, Blue Earth Diagnostics Ltd., a subsidiary of Bracco and Novartis AG, as well as other non-PSMA PET imaging agents; and there is the potential for future competition from others who may submit regulatory applications in anticipation of PYLARIFY's NCE exclusivity expiry in May 2026.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For DEFINITY, our competitors currently include GE Healthcare and Bracco, as well as echocardiography without ultrasound enhancing agents and other non-echocardiography agents, and there is the potential for future competition from generic manufacturers who may submit regulatory applications using DEFINITY as the reference listed drug (RLD).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For Neuraceq, our competitors currently include Lilly and GE Healthcare.

Any product candidates that we successfully develop and commercialize will compete with existing products and new products that may become available in the future, not only for customers but also for manufacturing resources, raw materials and, for our diagnostic imaging agents, staff at imaging centers and hospitals and PET scanner capacity. For example, for PNT2003, our principal competitors may include Novartis AG; ITM Radiopharma; Curium, and RayzeBio (acquired by Bristol Myers Squibb). For MK-6240 and NAV-4694, our principal competitors may include Lilly and GE Healthcare. For LNTH-2501, our principal competitors may include Curium and Novartis AG.

We cannot anticipate the actions of our current or future competitors in the same or competing modalities, such as significant price reductions on competitive products, the ability to offer a portfolio of products and offer price reductions across a portfolio, development of new products that are more cost-effective or have superior performance than our current or future products, the introduction of generic versions after our proprietary products lose their patent or regulatory exclusivity protection, the ability to secure better manufacturing locations or times for production of current or future products that limit the availability of necessary raw materials, production equipment or, for our diagnostic agents, scanning equipment. In addition, distributors of our products could attempt to shift end-users to competing modalities and products, or bundle the sale of a portfolio of products, in either case to the detriment of our specific products. Our current or future products could be rendered obsolete or uneconomical as a result of these activities.

Further, the radiopharmaceutical and biopharmaceutical industry continues to evolve strategically, with several market participants previously acquired by larger companies that may have more significant resources than ours. In addition, the supply-demand dynamics of the industry are complex because of large market positions of some participants, legacy businesses, government subsidies (in particular, relating to the manufacture of radioisotopes), government reimbursement policies, such as TPT Status, and group purchasing arrangements. We cannot predict what impact new owners and new operators may have on the strategic decision-making of our competitors, customers, and suppliers.

**Raw Materials and Supply Relationships**

We rely on certain raw materials and supplies to produce our products. Due to the specialized nature of our products and the limited, and sometimes intermittent, supply of raw materials available in the market, we have established relationships with several key suppliers. For the year ended December 31, 2025, our largest suppliers of raw materials and supplies were Institute for Radioelements ("IRE"), the Australian Nuclear Science and Technology Organisation ("ANSTO"), and NTP Radioisotopes

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("NTP"), which, in the aggregate, accounted for approximately 6.3% of our total purchases and related specifically to TechneLite, which was included in the sale of our SPECT business to SHINE on January 1, 2026.

***Other Materials***

We have additional supply arrangements for active pharmaceutical ingredients, excipients, packaging materials and other materials and components, some of which are sole-sourced, and all of which we currently believe are either in good standing or replaceable without any material disruption to our business. However, if a supplier is unable to provide required materials or equipment and a readily available substitute does not exist, we may experience delays while identifying and qualifying alternative suppliers, which may involve significant time, cost, and regulatory approval. Such delays could disrupt manufacturing, increase expenses, and negatively impact our business, financial condition, and results of operations.

See Part I, Item 1A. *"Risk Factors"* of this Form 10-K for information regarding certain risks associated with our raw materials and supply arrangements.

**Manufacturing**

The commercial manufacture of PYLARIFY and Neuraceq requires us to create a field-based network of specialized PMFs with radioisotope-producing cyclotrons. The radioisotope used in both PYLARIFY and Neuraceq is F-18, which has a 110-minute half-life, requiring that this agent be manufactured and distributed rapidly to end-users. After being made on a cyclotron at a PMF, the F-18 is combined with certain specifically designed ingredients in chemistry synthesis boxes to manufacture PYLARIFY or Neuraceq, as applicable. The finished PYLARIFY or Neuraceq is then quality control tested and transferred to a radiopharmacist who prepares and dispenses patient-specific doses from the final product. Because each of the PMFs manufacturing PYLARIFY and Neuraceq is deemed by the FDA to be a separate manufacturing site, each requires separate FDA approval for each product manufactured.

We have a specialized in-house FDA-approved manufacturing facility at our North Billerica campus for purposes of producing DEFINITY. DEFINITY manufactured at this facility first became commercially available on February 23, 2022. We believe this investment provides supply chain redundancy, improved flexibility and reduced costs in a potentially more price competitive environment.

We manufacture, finish and distribute our radiopharmaceutical products, including PYLARIFY and Neuraceq, through a network of specialized manufacturers on a just-in-time basis, and supply our customers with these products either by next day delivery services or by ground or air custom logistics.

***Manufacturing and Supply Arrangements***

We currently have the following technology transfer and manufacturing and supply agreements in place for some of our major products:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*PYLARIFY and Neuraceq*—We have entered into separate commercial supply agreements with different PMF networks. Our agreements with our PMF networks allow for termination upon the occurrence of specified events, including material breach or bankruptcy by either party, and have various termination dates generally terminating between 2027 and 2030 and subject to renewal provisions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*DEFINITY, Cardiolite and NEUROLITE*—In February 2022, we entered into a Manufacturing and Supply Agreement with JHS, for the manufacture of DEFINITY, Cardiolite, NEUROLITE and evacuation vials, the latter being an ancillary component for our TechneLite generators. The agreement expires on December 31, 2027, and can be renewed upon mutual consent. The agreement allows for termination upon the occurrence of certain events such as a material breach or default by either party, or bankruptcy by either party. The agreement also requires us to order from JHS a specified minimum percentage of our total requirements for DEFINITY each year during the contract term. In connection with the sale of our SPECT business to SHINE, we bifurcated the agreement with JHS and are now only responsible for the obligation relating to DEFINITY.

See Part I, Item 1A. *"Risk Factors"* of this Form 10-K for information regarding certain risks associated with our manufacturing and supply relationships.

**Intellectual Property Matters**

Patents, trademarks and other intellectual property rights, both in the U.S. and foreign countries, are very important to our business. We also rely on trade secrets, manufacturing know-how, technological innovations, licensing agreements and confidentiality agreements and regulatory exclusivities to maintain and improve our competitive position. We review third party proprietary rights, including patents and patent applications, as available, in an effort to develop an effective intellectual property strategy, avoid infringement of third party proprietary rights, identify licensing opportunities and monitor the intellectual property owned by others.

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***Description of Patent Rights***

Patents grant the legal right to exclude others from practicing an invention. In the United States, patent rights prohibit (subject to certain exceptions) others from making, using, selling, offering for sale, or importing the claimed invention without the permission of the patentee.

Patent rights are territorial and must be obtained in every jurisdiction in which protection is desired. The legal requirements for obtaining a patent vary by jurisdiction and can include the requirement that the claimed subject matter is new (novel) and nonobvious (or inventive). Other requirements, depending on jurisdiction, can include that the invention be adequately described so as to enable others to make and use it, and that the inventors be properly identified.

Patent rights are defined by the claims set forth in the granted patent, which define the scope of the right to exclude others from practicing the patented invention. Patent infringement arises when a third party practices without authorization, each element of the claims set forth in the granted patent. It is also possible to indirectly infringe a patent, such as by inducing a third party to directly infringe the patent, or by contributorily infringing by making a material component of the invention that is not subject to any substantial non-infringing use.

***Duration of Patent Rights***

Patents are granted for limited periods of time. In the United States, the standard patent term is 20 years from the earliest nonprovisional filing to which the patent claims priority. The patent term can be extended as a result of delays in the patent office, resulting in patent term adjustment.

In addition, patent term extension can compensate for time lost during product development and the regulatory review process by returning up to five years of patent life for a patent that covers a new product or its use.

***Patent Litigation***

Patent rights are not self-executing and may need to be asserted, such as through litigation. Litigation typically starts when a patentee sues a defendant alleging infringement of one or more patents. It can also occur when the target of a perceived patent assertion preemptively files a lawsuit, a so-called declaratory judgment action, seeking a declaration by a court that it does not infringe a patent or that the patent is invalid. In the United States, patent litigation is conducted in federal district court with a right of appeal to the United States Court of Appeals for the Federal Circuit, and discretionary review by petition to the Supreme Court of the United States.

In the United States, patent cases are generally tried to a jury, with the exception of Hatch-Waxman cases, discussed below, which are tried to a judge. The judge determines the meaning of disputed claim terms during a process called claim construction.

Patent litigation can be expensive and burdensome, both in terms of time, money, and company resources. The outcome of patent litigation is always uncertain to varying degrees. The subject matter is often highly technical and difficult for lay juries, and judges, to understand. Context is provided by dueling experts about whom the fact-finder must make credibility determinations. The issue of infringement frequently turns on the construction (interpretation) of particular claim language during a process culminating in a so-called "*Markman Order."*

During patent litigation, the validity of the patents is almost always challenged, because invalidity is a defense to infringement. Although a patent is presumed valid, this presumption can be overcome by clear and convincing evidence. In the United States, typical grounds for challenge include lack of novelty or obviousness by introducing evidence of relevant "prior art," referring to activity that pre-dated the relevant priority dates of the challenged patents. During litigation, patent challengers often devote significant resources to identifying prior art from repositories around the world, often far exceeding the search capacities and budgets of the patent offices that conducted screening searches before issuing the patents in the first instance.

Other grounds of challenge in the United States include lack of written description and enablement, generally alleging that the full scope of the claimed invention was either not in the possession of the inventor of the time of filing or that one of skill in the art would not have been able to practice the full scope of the invention without undue experimentation. Both of these inquiries are highly fact-specific. Improper inventorship can be the basis for an invalidity challenge, as can an allegation that the patent is not the subject of statutory subject matter, which is known as a so-called "Section 101" challenge.

Although patent infringement actions are tried in district courts, patent validity can also be challenged in special proceedings before the U.S. Patent and Trademark Office ("USPTO"), such as Inter Partes Reviews and Post-Grant Reviews.

***Patent-related Aspects of Regulatory Matters***

The FDA approval process for drugs is described below, including NDAs for innovator drugs, ANDAs for generics, and 505(b)(2) applications for modifications to formulations or uses of products previously approved by the FDA. See *"Regulatory Matters"* below for more information. Below is a description of the roles played by patents in relevant regulatory framework.

First, in seeking approval for a drug through an NDA, including a 505(b)(2) NDA, applicants are required to list with the FDA each patent with claims that cover the applicant's drug, which is later published in the Orange Book. The FDA approved

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drugs listed in the Orange Book can serve as a basis for comparison by the FDA when evaluating the bioequivalence of new generic drugs. An FDA approved drug relied upon for comparison is referred to as a "reference listed drug" ("RLD") and may be cited by potential competitors in support of approval of an ANDA or 505(b)(2) application. See *"Regulatory Matters – Hatch-Waxman Act"* below for more information.

With respect to any RLD patents listed in the Orange Book, the applicant must certify to one of the following four items: (i) the required patent information has not been filed; (ii) the listed patent has expired; (iii) the listed patent has not expired, but will expire on a particular date and approval is sought after patent expiration; or (iv) the listed patent is invalid or will not be infringed by the new drug.

A certification to the fourth item (a so-called a Paragraph IV certification) constitutes a technical act of patent infringement under the U.S. Patent Laws, which can give rise to litigation to determine whether or not the product, if approved and launched, would infringe the listed patents, and whether those patents are invalid. The applicant may also elect to submit a "section viii" statement certifying that its proposed label does not contain (or carves out) any language regarding the patented method-of-use rather than certify to a listed method-of-use patent. The first company or companies to submit an application that (1) is determined by the FDA to be "substantially complete" upon submission and (2) contains a paragraph IV certification to at least one of the patents listed in the Orange Book is generally eligible for the exclusive right to market the generic drug for 180 days.

After filing a Paragraph IV certification, the applicant has 45 days from filing to submit a "Notice Letter" to the Orange Book patent holder. The patent holder can then sue for infringement. The resulting litigation is known as Hatch-Waxman litigation. If the patent holder sues for infringement within 45 days of receiving this Notice Letter, the FDA cannot approve the application for 30 months (the so-called "30 month stay"), unless the patents expire in the interim, the lawsuit is settled, or there is decision on the merits favorable to applicant.

Independent of the 30-month stay, the FDA also will not approve a 505(b)(2) NDA or an ANDA application that references an RLD until any applicable non-patent exclusivity listed in the Orange Book for the respective RLD has expired. See *"Regulatory Matters – Hatch-Waxman Act"* below for more information.

***Trademarks, Service Marks and Trade Names***

We own various trademarks, service marks, and trade names, including, among others, PYLARIFY, DEFINITY, Neuraceq and Find Fight and Follow. We have generally registered these trademarks, as well as others, in the United States and/or numerous foreign jurisdictions.

***Trade Secrets***

We possess considerable know-how, including trade secrets from which we derive commercial value. In addition to patents, we rely, where necessary, upon unpatented trade secrets and know-how, proprietary information and continuing technological innovation to develop and maintain our competitive position. We seek to protect our proprietary information, in part, using confidentiality agreements with our collaborators, employees, consultants and other third parties and invention assignment agreements with our employees.

***Intellectual Property Protection on Selected Assets***

Our intellectual property ("IP") assets include patents that we own and those to which we have licenses. We typically seek patent protection in major markets around the world, including, among others, the United States, Canada, Western Europe, Asia, Central America, and South America.

All patent terms described below are presented without giving effect to any applicable patent term adjustments or regulatory extensions. In addition, a list of Orange Book-listed patents, together with expiration dates, and applicable regulatory exclusivity can be obtained from the FDA through its website.

Further comments on selected IP assets are below:

*aPROMISE —* U.S. patents and pending patent applications worldwide relating to automated medical image analysis, have expiration dates ranging from 2037 to 2041.

*aBSI —* We own patents relating to automated detection of bone cancer metastases. The patents on this technology expire in the United States in 2032 and outside of the United States in 2028. Further, we own a U.S. patent and have patent applications that are pending in the United States and worldwide relating to aBSI improvements, which have expiration ranging from 2040 to 2041.

*DEFINITY —* A portfolio of patents protects the use and manufacturing of DEFINITY and also the VIALMIX RFID device, both in the United States and internationally. Currently, there are nine Orange Book-listed patents for DEFINITY. Our longest duration Orange Book-listed DEFINITY patent extends until May 2037.

*Flyrcado (flurpiridaz) —* We own patents and patent applications in numerous jurisdictions covering composition, use, formulation, and manufacturing, including in the United States a composition of matter patent expiring in 2026, a formulation patent expiring in 2032, a method-of-use patent expiring in 2028, and manufacturing-related patents expiring in 2031 and 2033, and various patent applications, some of which, if granted, will expire in 2033.

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*LNTH-1363S —* We exclusively license patent applications directed to compositions of matter and methods of use of LNTH-1363S. If granted, the last patent will expire in 2043.

*LNTH-2403 -* An LRRC15-targeted radiotherapeutic. We own two patent applications covering LNTH-2403 compositions of matter, method of use, and combination therapies, the last of which expires in 2045.

*LNTH-2501 -* We do not own or license any patents or patent applications relating to this asset.

*LNTH-2620 -* We co-own with AC Immune SA patents directed to composition of matter and methods of use of LNTH-2620, which expire in 2037.

*MK-6240 —* We exclusively license patents directed to composition of matter and methods of use of MK-6240 which expire in 2035.

*NAV-4694 —* We exclusively license patents directed to composition of matter, methods of use and methods of manufacturing of NAV-4694 which expire in 2028 and 2029.

*Neuraceq -* A portfolio of patents protects Neuraceq, both in the United States and internationally. Currently, there are two Orange Book-listed patents for Neuraceq. Our longest duration Orange Book-listed Neuraceq patent extends until July 2032.

*PYLARIFY —* A portfolio of patents protects PYLARIFY, both in the United States and internationally, and we continue to pursue additional patent protection. Currently, there are six Orange Book-listed patents for PYLARIFY. Our longest duration Orange Book-listed PYLARIFY patent extends until June 2037. The NCE-1 date for PYLARIFY was May 26, 2025. As described below, this is the date after which the FDA is allowed to accept an ANDA or 505(b)(2) applications from generic challengers. If this happens, we could elect to pursue Hatch-Waxman litigation and trigger the 30-month stay described above, see *"Intellectual Property Matters – Patent-related Aspects of Regulatory Matters"* above for more information; during the stay, the FDA is prohibited from approving, other than as a tentative approval, the challenger's application until the lawsuit is settled or there is a decision on the merits favorable to applicant.

*PNT2002 —* We exclusively license granted U.S. patents and pending U.S. patent applications, as well as pending patent applications in jurisdictions outside of the United States directed to formulations, use, and manufacturing of PNT2002. The granted U.S. patents expire in 2041.

*PNT2003 —* We exclusively license pending U.S. patent applications, as well as pending patent applications in jurisdictions outside of the United States directed to formulations, use, and manufacturing of PNT2003 which, if granted, would expire in 2043.

See Part I, Item 1A. *"Risk Factors"* of this Form 10-K for information regarding certain risks associated with our intellectual property.

**Regulatory Matters** 

***Food and Drug Laws***

The development, manufacture and commercialization of our products are subject to comprehensive governmental regulation both within and outside the United States. A number of factors substantially increase the time, difficulty, and costs incurred in obtaining and maintaining the approval to market newly developed and existing products. These factors include governmental regulation, such as detailed inspection of and controls over research and laboratory procedures, clinical trials, manufacturing, marketing, advertising and promotion, sampling, distribution, import and export, record keeping and storage and disposal practices, together with various post-marketing requirements. Governmental regulatory actions can result in the seizure or recall of products, suspension or revocation of the authority necessary for their production and sale, as well as other civil or criminal sanctions.

Our activities related to the development, manufacture, packaging, or repackaging of our products subject us to a wide variety of laws and regulations. We are required to register for permits and/or licenses with, seek approvals from and comply with operating and security standards of, the FDA, the U.S. Nuclear Regulatory Commission ("NRC"), the U.S. Department of Health and Human Services, Health Canada, the European Medicines Agency, the U.K. Medicines and Healthcare Products Regulatory Agency, the NMPA and various state and provincial boards of pharmacy, state and provincial controlled substance agencies, state and provincial health departments and/or comparable state and provincial agencies, as well as foreign agencies, and certain accrediting bodies depending upon the type of operations and location of product distribution, manufacturing and sale.

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The FDA and various state regulatory authorities regulate the research, testing, manufacture, safety, labeling, storage, recordkeeping, premarket approval, marketing, advertising and promotion, import and export, and sales and distribution of pharmaceutical products in the United States. Prior to marketing a pharmaceutical product, we must first receive FDA approval. In the United States, the FDA regulates drugs under the Federal Food, Drug, and Cosmetic Act ("FDCA") and implementing regulations. The process of obtaining regulatory approvals and compliance with appropriate federal, state, local, and foreign statutes and regulations requires the expenditure of substantial time and financial resources. Currently, the process required by the FDA before a drug product may be marketed in the United States generally involves the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Completion of preclinical laboratory tests, animal studies and formulation studies according to current Good Laboratory Practices regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Submission to the FDA of an IND application which must become effective before human clinical trials may begin, including review and approval by any institutional review board ("IRB"), serving any of the institutions participating in the clinical trials;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Performance of adequate and well-controlled human clinical trials according to current Good Clinical Practices and other requirements, to establish the safety and efficacy of the proposed drug product for its intended use;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Submission to the FDA of an NDA for a new drug or ANDA for a generic drug;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Satisfactory completion of an FDA inspection of the manufacturing facility or facilities at which the drug product is produced to assess compliance with cGMP regulations; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•FDA review and approval of the NDA or ANDA.

The testing and approval process requires substantial time, effort, and financial resources, and we cannot be certain that any approvals for our products in development will be granted on a timely basis, if at all. Once a pharmaceutical product is identified for development, it enters the preclinical testing stage. Preclinical tests include laboratory evaluations of product chemistry, toxicity, formulation, and stability, as well as animal studies to assess its potential safety and efficacy. This testing culminates in the submission of the IND application to the FDA.

Once the IND application becomes effective, including review and approval by any IRB serving any of the institutions participating in the clinical trial, the clinical trial program may begin. Each new clinical trial protocol must be submitted to the FDA before the trial may begin. The person, entity or organization taking responsibility for the trial is referred to as the clinical trial sponsor. Human clinical trials are typically conducted in three sequential phases that may overlap or be combined:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Phase 1.* The product is initially introduced into healthy human subjects and tested for safety, dosage tolerance, absorption, metabolism, distribution and excretion. In the case of some products for severe or life-threatening diseases, especially when the product may be too inherently toxic to ethically administer to healthy volunteers, the initial human testing is often conducted in patients with those diseases.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Phase 2.* Involves trials in a limited patient population to identify possible adverse effects and safety risks, to evaluate preliminarily the efficacy of the product for specific targeted diseases and to determine dosage tolerance and optimal dosage and schedule.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Phase 3.* Clinical trials are undertaken to further evaluate dosage, clinical efficacy and safety in an expanded patient population at geographically dispersed clinical trial sites. These trials are intended to collect sufficient safety and efficacy data to support the NDA for FDA approval.

Progress reports detailing the results of the clinical trials must be submitted at least annually to the FDA and safety reports must be submitted to the FDA and the investigators for serious and unexpected adverse events. Submissions must also be made to inform the FDA of certain changes to the clinical trial protocol. Federal law also requires the sponsor to register the trials on public databases when they are initiated, and to disclose the results of the trials on public databases upon completion. Phase 1, Phase 2 and Phase 3 clinical trials may not be completed successfully within any specified period, if at all. The FDA or the clinical trial sponsor may suspend or terminate a clinical trial at any time on various grounds, including a finding that the research subjects or patients are being exposed to an unacceptable health risk. Similarly, any IRB serving any of the institutions participating in the clinical trial can suspend or terminate approval of a clinical trial at an institution if the clinical trial is not being conducted in accordance with the IRB's requirements or if the product has been associated with unexpected serious harm to patients. Failure to register a clinical trial or disclose study results within the required time periods could result in penalties, including civil monetary penalties.

Concurrent with clinical trials, companies usually complete additional animal studies and must also develop additional information about the chemistry and physical characteristics of the product and finalize a process for manufacturing the product in commercial quantities in accordance with cGMP requirements. The manufacturing process must be capable of consistently producing quality batches of the product and, among other things, the manufacturer must develop methods for testing the identity, strength, quality and purity of the final product. Additionally, appropriate packaging must be selected and tested and stability studies must be conducted to demonstrate that the product does not undergo unacceptable deterioration over its shelf life.

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The results of product development, preclinical studies and clinical trials, along with descriptions of the manufacturing process, analytical tests conducted on the drug product, proposed labeling, and other relevant information, are submitted to the FDA as part of an NDA for a new drug, requesting approval to market the product. The submission of an NDA is subject to the payment of a substantial user fee. A waiver of that fee may be obtained under certain limited circumstances. The approval process is lengthy and difficult, and the FDA may refuse to approve an NDA if the applicable regulatory criteria are not satisfied. The FDA has substantial discretion in the product approval process, and it is impossible to predict whether and when the FDA will grant marketing approval. While the FDA grants PDUFA target dates, these target dates may be extended due to agency requests for information or delays related to agency personnel developments. The FDA may on occasion require the sponsor of an NDA to conduct additional clinical trials or to provide other scientific or technical information about the product, and these additional requirements may lead to unanticipated delay or expense. Even if such data and information are submitted, the FDA may ultimately decide that the NDA does not satisfy the criteria for approval. Data obtained from clinical trials are not always conclusive, and the FDA may interpret data differently than we interpret the same data.

If a product receives regulatory approval, the approval may be significantly limited to specific diseases and dosages or the indications for use may otherwise be limited, which could restrict the commercial value of the product. Further, the FDA may require that certain contraindications, warnings or precautions be included in the product labeling. In addition, the FDA may require Phase 4 testing which involves clinical trials designed to further assess a drug product's safety and effectiveness after NDA approval. The FDA also may impose one or more Risk Evaluation and Mitigation Strategies ("REMS") and Elements to Assure Safe Use to ensure that the benefits of a product outweigh its risks. A REMS could add training requirements for healthcare professionals, safety communications efforts and limits on channels of distribution, among other things. The sponsor would be required to evaluate and monitor the various REMS activities and adjust them if need be. Whether a REMS would be imposed on any of our products and any resulting financial impact is uncertain at this time.

Under the Orphan Drug Act, the FDA may designate a product as an Orphan Drug if it is a drug intended to treat a rare disease or condition, which is generally defined as a patient population of fewer than 200,000 individuals annually in the United States, or a patient population greater than 200,000 in the United States where there is no reasonable expectation that the cost of developing the drug will be recovered from sales in the United States.

In the United States, Orphan Drug designation entitles a party to financial incentives such as opportunities for grant funding towards clinical trial costs, tax advantages and user-fee waivers. In addition, if a product that has Orphan Drug designation subsequently receives the first FDA approval for the indication for which it has such designation, the product is entitled to Orphan Drug exclusivity, which means the FDA may not approve any other application to market the same drug for the same indication for a period of seven years, except in limited circumstances, such as a showing of clinical superiority over the product with orphan exclusivity or where the manufacturer is unable to assure sufficient product quantity.

Any drug products for which we receive FDA approvals are subject to continuing regulation by the FDA, including, among other things, record-keeping requirements, reporting of adverse experiences with the product, providing the FDA with updated safety and efficacy information, product sampling and distribution requirements, complying with certain electronic records and signature requirements, and complying with FDA promotion and advertising requirements. The FDA strictly regulates labeling, advertising, promotion and other types of information on drug products that are placed on the market. Drugs may be promoted only for the approved indications and consistent with the provisions of the approved label and promotional claims must be appropriately balanced with important safety information and otherwise be adequately substantiated. Further, manufacturers of drugs must continue to comply with cGMP requirements, which are extensive and require considerable time, resources and ongoing investment to ensure compliance. In addition, changes to the manufacturing process generally require prior FDA approval before being implemented, and other types of changes to the approved product, such as adding new indications and additional labeling claims, are also subject to further FDA review and approval.

Drug product manufacturers and other entities involved in the manufacturing and distribution of approved drugs products are required to register their establishments with the FDA and certain state agencies, and are subject to periodic unannounced inspections by the FDA and certain other agencies for compliance with cGMP and other laws. The cGMP requirements apply to all stages of the manufacturing process, including the production, processing, sterilization, packaging, labeling, storage and shipment of the drug product. Manufacturers must establish validated systems to ensure that products meet specifications and regulatory standards, and test each product batch or lot prior to its release. In addition, manufacturers of commercial PET products such as PYLARIFY and Neuraceq, including radiopharmacies, hospitals, and academic medical centers, are required to submit either an NDA or ANDA in order to produce PET drugs for clinical use, or produce the drugs under an IND.

The FDA also regulates the preclinical and clinical testing, design, manufacture, safety, efficacy, labeling, storage, record keeping, sales and distribution, post-market adverse event reporting, import/export and advertising and promotion of any medical devices that we distribute pursuant to the FDCA and FDA's implementing regulations. The Federal Trade Commission shares jurisdiction with the FDA over the promotion and advertising of certain medical devices. The FDA can also impose restrictions on the sale, distribution or use of medical devices at the time of their clearance or approval, or subsequent to marketing. Currently, medical devices comprise only a small portion of our revenues.

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The FDA may withdraw marketing authorization for a product if compliance with regulatory standards is not maintained or if problems occur after the product reaches the market. The exercise of broad regulatory powers by the FDA continues to result in increases in the amount of testing and documentation required for approval or clearance of new drugs and devices, all of which add to the expense of product introduction and the cost of continuing to make an approved drug or device available. Later discovery of previously unknown problems with a product may result in restrictions on the product or even complete withdrawal of the product from the market. Further, the failure to maintain compliance with regulatory requirements may result in administrative or judicial actions, such as fines, civil monetary penalties, warning letters, holds on clinical trials, product recalls or seizures, product detention or refusal to permit the import or export of products, refusal to approve pending applications or supplements, restrictions on marketing or manufacturing, injunctions, or civil or criminal penalties. In addition, regulations are subject to change as a result of legislative, administrative or judicial action, which may also increase our costs or reduce sales or otherwise adversely impact our products.

Because our operations include the manufacture and distribution of medical radioisotopes and other medical products, we are subject to regulation by the NRC and the departments of health of each state in which we operate and the applicable state boards of pharmacy. In addition, the FDA is also involved in the regulation of cyclotron facilities where PET products are produced in compliance with cGMP requirements and U.S. Pharmacopeia requirements for PET drug compounding.

Drug laws also are in effect in the non-U.S. markets in which we or our partners conduct business. These laws range from comprehensive drug approval requirements to requests for product data or certifications. In addition, inspection of and controls over manufacturing, as well as monitoring of adverse events, are components of most of these regulatory systems. Our business is subject to varying degrees of governmental regulation in the countries in which we or our partners operate, and the general trend is toward increasingly stringent regulation.

To assess and facilitate compliance with applicable FDA, NRC and other state, federal and foreign regulatory requirements, we regularly review our quality systems to assess their effectiveness and identify areas for improvement. As part of our quality review, we perform assessments of our suppliers of the raw materials that are incorporated into products and conduct quality management reviews designed to inform management of key issues that may affect the quality of our products. From time to time, we may determine that products we manufactured or marketed do not meet our specifications, published standards, such as those issued by the International Standards Organization, or regulatory requirements. When a quality or regulatory issue is identified, we investigate the issue and take appropriate corrective action, such as withdrawal of the product from the market, correction of the product at the customer location, notice to the customer of revised labeling and other actions.

***Hatch-Waxman Act***

The Hatch-Waxman Act added two pathways for FDA drug approval. First, the Hatch-Waxman Act permits the FDA to approve ANDAs for generic versions of drugs if the ANDA applicant demonstrates, among other things, that its product is bioequivalent to the innovator product and provides relevant chemistry, manufacturing and product data. See *"Intellectual Property Matters,"* above for more information. Second, the Hatch-Waxman Act created what is known as a Section 505(b)(2) NDA, which requires the same information as a full NDA (known as a Section 505(b)(1) NDA), including full reports of clinical and preclinical studies but allows some of the information from the reports required for marketing approval to come from studies which the applicant does not own or have a legal right of reference. A Section 505(b)(2) NDA permits a manufacturer to obtain marketing approval for a drug without needing to conduct or obtain a right of reference for all of the studies that would be required for a Section 505(b)(1) NDA submission.

Under the Hatch-Waxman Act, the FDA can approve ANDAs for generic versions of drugs before the expiration of an Orange Book-listed patent covering the innovator product if the ANDA applicant demonstrates, among other things, that (i) its generic candidate is the same as the innovator product by establishing bioequivalence and providing relevant chemistry, manufacturing and product data, and (ii) either the marketing of that generic candidate does not infringe the Orange Book-listed patent(s) or the Orange Book-listed patent(s) is invalid. Similarly, the FDA can approve a Section 505(b)(2) NDA from an applicant that relies on some of the information required for marketing approval to come from studies which the applicant does not own or have a legal right of reference. An applicant submitting an application relying on either the ANDA or this Section 505(b)(2) approval pathway must also give Notice to the innovator, which would then enable the innovator to file suit against the applicant within 45 days of receiving the Notice. If the innovator challenges the applicant in court in a timely manner, then FDA approval to commercialize the generic candidate will be stayed (that is, delayed) for up to 30 months while the dispute is resolved in court. The 30-month stay can be shortened if the patent infringement suit is resolved in the applicant's favor before the 30-month stay expires, and this may involve a successful challenge of the patent's validity in USPTO proceedings and appeals process. In the event a 505(b)(2) applicant does not rely on studies related to the innovator product, the 30-month stay would not apply, but additional clinical trials may be required by the FDA for approval. We can give no assurance that we would have grounds to file a patent infringement suit, that we would obtain the full 30-month stay, that we would be successful on the merits asserting that an Applicant infringes our Orange Book-listed patent, or that we would be successful defending the validity of our Orange Book-listed patent in court or in a USPTO adversarial proceeding if a third party were to submit an ANDA or Section 505(b)(2) NDA application to the FDA in connection with one of our commercial products.

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The Hatch-Waxman Act also provides for: (1) restoration of a portion of a product's patent term that was lost during clinical development and application review by the FDA; and (2) statutory protection, known as exclusivity, against the FDA's acceptance or approval of certain competitor applications.

Under U.S. law, patent term extension can compensate for time lost during product development and the regulatory review process by returning up to five years of patent life for a patent that covers a new product or its use. This period is generally one-half the time between the effective date of an IND application and the submission date of an NDA, plus the time between the submission date of an NDA and the approval of that application. Patent term extensions, however, are subject to a maximum extension of five years, and the patent term extension cannot extend the remaining term of a patent beyond a total of 14 years. The application for patent term extension is subject to approval by the USPTO in conjunction with the FDA.

The Hatch-Waxman Act also provides for a period of statutory protection for new drugs that receive NDA approval from the FDA. If the FDA approves a Section 505(b)(1) NDA for a new drug that is an NCE, meaning that the FDA has not previously approved any other new drug containing the same active moiety, then the Hatch-Waxman Act prohibits the submission or approval of an ANDA or a Section 505(b)(2) NDA for a period of five years from the date of approval of the NDA, except that the FDA may accept an application for review after four years under certain circumstances, specifically a patent challenge for one or more patents listed by the NDA holder in the Orange Book, submitted in a "Paragraph IV" Certification. Because this four-year date occurs one year before the end of the five-year NCE exclusivity, it is commonly referred to as the "NCE-1" date.

The Hatch-Waxman Act will not prevent the filing or approval of a full NDA, as opposed to an ANDA or Section 505(b)(2) NDA, for any drug, but the competitor would be required to conduct its own clinical trials, and any use of the drug for which marketing approval is sought could not violate another NDA holder's patent claims.

The Hatch-Waxman Act provides for a three-year period of exclusivity for an NDA for a new drug containing an active moiety that was previously approved by the FDA, but also includes new clinical data (other than bioavailability and bioequivalence studies) to support an innovation over the previously-approved drug and those studies were conducted or sponsored by the applicant and were essential to approval of the application. This three-year exclusivity period does not prohibit the FDA from accepting an application from a third party for a drug with that same innovation, but it does prohibit the FDA from approving that application for the three-year period. The three-year exclusivity does not prohibit the FDA, with limited exceptions, from approving generic drugs containing the same active ingredient but without the new innovation.

***Reimbursement***

The successful commercialization of our products is also subject to the availability of appropriate third-party coding, coverage, and payment for our customers. Third-party payors in the United States include private payors, including managed care providers, and State and Federal healthcare programs, such as Medicare and Medicaid. The process for determining whether a payor will provide coverage for a product may be separate from the process for setting the price or reimbursement rate that the payor will pay for the product. Coverage of a product does not ensure there will be an appropriate reimbursement amount for such product and the process to ensure appropriate reimbursement is outside our control. For private payors, coverage and reimbursement of our products vary from private payor to private payor. Many private payors, such as managed care providers, manage access to products, and may use medical policies (which may include specific coverage requirements such as prior authorization, re-authorization and achieving performance metrics under value-based contracts) to control utilization. Exclusion from, or restriction in coverage can reduce product use. For government payors, we participate, as required, in the Medicaid drug rebate program, the Federal Supply Schedule and the Public Health Service Act 340B program, which each require discounts for participation and may be subject to change. For Medicare, reimbursement to customers for our products is generally established through the rulemaking process or in discussion with Medicare Administrative Contractors. We have ongoing conversations with third-party payors to advocate for appropriate coding, coverage and payment for our portfolio of products.

***Medicare Outpatient TPT Status***

Part B of the Medicare program generally reimburses medical services and supplies, including drugs, provided to beneficiaries by physicians and other qualified healthcare professionals. Generally, drugs furnished "incident to" a physician's service in the hospital outpatient setting of care are reimbursed at ASP plus a certain additional percent, unless the product is treated as a "supply" in the performance of the procedure and "packaged" and paid as part of bundled payment for the procedure. New drugs, however, may apply for TPT Status in which case they are provided a separate payment at ASP plus a certain additional percent for two to three years, regardless of whether they would ordinarily be packaged. TPT Status applies to patients with traditional Medicare FFS insurance coverage who are treated in the hospital outpatient setting. Since 2008, under the hospital outpatient program, diagnostic radiopharmaceuticals have been considered supplies and their payment bundled into the payment for the procedure after expiration of TPT Status. In November 2024, CMS released the CMS 2025 OPPS Rule to pay separately for diagnostic radiopharmaceuticals, such as PYLARIFY, with a per day cost greater than $630, based on their MUC. In November 2025, the CMS 2026 OPPS Rule updated this per day cost threshold to $655, with payment based on the arithmetic

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MUC. MUC differs from ASP as it is an indirect measure of a product's cost based on hospital-reported claims data. We believe MUC is a less accurate reflection of actual purchasing costs of the hospital.

PYLARIFY's TPT Status from CMS in the hospital outpatient setting was effective from January 1, 2022 through December 31, 2024, enabling traditional Medicare FFS to provide separate payment for PYLARIFY in addition to the payment for the PET/computed tomography procedure in that setting. Effective January 1, 2025, CMS began maintaining separate payment for PYLARIFY based on MUC in the hospital outpatient setting, which is lower than payments based on ASP that were made during TPT Status. Although PYLARIFY continues to be paid separately, other competitive PSMA PET imaging agents continue to have TPT Status after December 31, 2024, and hospital use of those products, for patients with traditional Medicare FFS in the hospital outpatient setting, generally will be paid separately based on ASP plus six percent rather than on MUC. In November 2025, in the preamble to the CMS 2026 OPPS Rule, CMS acknowledged that there could be value in the use of ASP for determining separately paid diagnostic radiopharmaceutical payment amounts in the future. However, CMS will continue to use the arithmetic MUC to calculate payment for diagnostic radiopharmaceuticals in 2026, explaining that there must be more consistent, validated, and universal reporting of ASP data for diagnostic radiopharmaceuticals before ASP can be the basis for payment. CMS reiterated in the CMS 2026 OPPS Rule that, although ASP reporting for diagnostic radiopharmaceuticals remains voluntary at this time, it will continue to evaluate whether and how ASP could be used for future Medicare Outpatient Prospective Payment System ("OPPS") payment once reporting is sufficiently consistent, validated, and universal.

Similarly, when used for patients in the hospital outpatient setting, Neuraceq is paid based on its MUC, however, other competitive imaging agents are currently being paid based on a higher MUC rate.

We have repeatedly engaged CMS on methodology for reporting ASP, and we will continue to work with coalition partners and CMS to support using ASP rather than MUC to calculate payment for diagnostic radiopharmaceuticals, including PYLARIFY and Neuraceq, in future years similar to the way OPPS currently pays for other drugs, biologics, and therapeutic radiopharmaceuticals.

***Healthcare Reform and Other Laws Affecting Payment***

We operate in a highly regulated industry. The U.S. and state governments continue to propose and pass legislation that may affect the availability and cost of healthcare. For example, the Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act (collectively, the "Healthcare Reform Act"), substantially changed the way in which healthcare is financed by both governmental and private insurers and has a significant impact on the pharmaceutical industry. The Healthcare Reform Act contains a number of provisions that affect coverage, reimbursement and/or delivery of drug products and the medical imaging procedures in which our drug products are used.

The Healthcare Reform Act has been subject to political and judicial challenges, but it has generally withstood such challenges, and the main provisions of the Healthcare Reform Act remain in effect. More recently, Congress enacted the Inflation Reduction Act of 2022 (the "IRA") which significantly impacts the pharmaceutical industry. Among other provisions, the IRA authorizes Medicare to negotiate pricing for the highest Medicare-spend drugs, as determined by their Medicare Part B and D spend, that have been on the market for an extended period of time without market competition. Although the IRA provides for a limited number of categorical exclusions from Medicare negotiation, radiopharmaceuticals are not among those categorical exclusions. CMS is implementing the first year of Medicare negotiation, which will be restricted to Part D drugs, starting in calendar years 2026 and 2027. In addition, the statute provided for redesign of the Medicare Part D benefit. We are currently focused on drugs that are covered under Part B, therefore we do not expect the Part D benefit redesign to have an impact on our portfolio. Part B drugs will be considered for Medicare negotiation beginning in calendar year 2028, and CMS will begin the process of identifying Part B drugs for negotiation as early as calendar year 2026. We are monitoring the implementation of the IRA to determine what impact, if any, this would have on our current products and product candidates in development.

The IRA also introduces rebate obligations for manufacturers of Part B and D drugs that take price increases which exceed the rate of inflation, similar to the longstanding Medicaid inflation rebates. Under these new Medicare inflation rebates, each Part B and D single-source drug/biological and biosimilar will have an "inflation adjusted" payment amount calculated by CMS. If the manufacturer's price increases for the relevant product exceeds the inflation adjusted payment amount, as trended forward by the rate of inflation, the manufacturer will be required to reimburse Medicare the difference between what Medicare paid for the product and what it would have paid based on the inflation adjusted payment amount.

Recent state legislative efforts seek to address drug costs and generally have focused on increasing transparency around drug costs or limiting drug prices. Some of those efforts have been subject to legal challenge.

General legislative cost control measures may also affect reimbursement for our products (or services provided by healthcare providers using our products). The Budget Control Act, as amended by the Bipartisan Budget Act of 2019, resulted in the imposition of 2% reductions in Medicare (but not Medicaid) payments to providers beginning in 2013 and will remain in effect through fiscal year 2030 unless additional Congressional action is taken. The imposition of the 2% payment adjustment had been suspended through March 31, 2022 and went into effect as of April 1, 2022. Any significant spending reductions affecting Medicare, Medicaid or other publicly funded or subsidized health programs that may be implemented and/or any significant taxes or fees that may be imposed on us could have an adverse impact on our business results of operations, financial condition and cash flows.

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On July 4, 2025, President Trump signed into law the largest changes to the Healthcare Reform Act with the One Big Beautiful Bill Act (the "OBBBA"), which will reduce existing patient coverage under Medicaid. The expiration of certain subsidies for Marketplace coverage currently in place under the Healthcare Reform Act at the end of 2025 may also cause material coverage losses. The OBBBA further restricts Medicaid financing, which will decrease federal funds available to state Medicaid agencies and may result in reduced state Medicaid agency reimbursement rates.

Additionally, changes in U.S. drug pricing policies, including initiatives that seek to link domestic prices to those paid in other countries under "most-favored-nation" pricing concepts, could increase pricing pressure on our products. Any such policies, if implemented or expanded, could reduce reimbursement levels, constrain pricing flexibility, and adversely affect our revenues and results of operations.

***Healthcare Fraud and Abuse Laws***

We are subject to various federal, state and local laws targeting fraud and abuse in the healthcare industry, including anti-kickback and false claims laws. Violations of fraud and abuse laws may be punishable by criminal or civil sanctions, including fines and civil monetary penalties, and/or exclusion from federal health care programs (including Medicare and Medicaid). Federal and state authorities are paying increased attention to enforcement of these laws within the pharmaceutical industry, and private individuals have been active in alleging violations of the laws and bringing suits on behalf of the government under the federal False Claims Act ("FCA"). Violations of international fraud and abuse laws could result in similar penalties, including exclusion from participation in health programs outside the United States. If we were subject to allegations concerning, or were convicted of violating, these laws, our business could be harmed.

The federal Anti-Kickback Statute generally prohibits, among other things, a pharmaceutical manufacturer from directly or indirectly soliciting, offering, receiving, or paying any remuneration in cash or in kind where one purpose is either to induce the referral of an individual for, or the purchase or prescription of a particular drug that is payable by a federal health care program, including Medicare or Medicaid. The Healthcare Reform Act clarifies the intent requirements of the federal Anti-Kickback Statute, providing that a person or entity does not need to have actual knowledge of the statute or a specific intent to violate the statute. Violations of the federal Anti-Kickback Statute can result in exclusion from Medicare, Medicaid or other governmental programs, as well as civil and criminal fines and penalties for each violation and three times the amount of the unlawful remuneration. In addition, the Healthcare Reform Act revised the FCA to provide that a claim arising from a violation of the Federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the FCA. The majority of states also have anti-kickback, false claims, and similar fraud and abuse laws and although the specific provisions of these laws vary, their scope is generally broad, and there may not be regulations, guidance or court decisions that apply the laws to particular industry practices. There is, therefore, a possibility that our practices might be challenged under the anti-kickback statutes or similar laws.

Federal and state false claims laws generally prohibit anyone from knowingly and willfully, among other activities, presenting, or causing to be presented for payment to third party payors (including Medicare and Medicaid) claims for drugs or services that are false or fraudulent (which may include claims for services not provided as claimed or claims for medically unnecessary services). As discussed, a claim arising from a violation of the federal Anti-Kickback Statute constitutes a false or fraudulent claim for purposes of the FCA. False or fraudulent claims for purposes of the FCA carry fines and civil penalties for violations for each false claim, plus up to three times the amount of damages sustained by the federal government and, most critically, may provide the basis for exclusion from federally funded healthcare programs. There is also a criminal FCA statute by which individuals or entities that submit false claims can face criminal penalties. In addition, under the federal Civil Monetary Penalty Law, the Department of Health and Human Services Office of Inspector General has the authority to exclude from participation in federal health care programs or to impose civil penalties against any person who, among other things, knowingly presents, or causes to be presented, certain false or otherwise improper claims. Our activities relating to the sale and marketing of our products may be subject to scrutiny under these laws and any violation could create a substantial liability for us and also cause reputational harm.

Laws and regulations have also been enacted by the U.S. federal government and various states, as well as by countries outside of the United States, to regulate the sales and marketing practices of certain entities including pharmaceutical and device manufacturers. The laws and regulations generally limit financial interactions between manufacturers and health care providers; require pharmaceutical companies to comply with the pharmaceutical industry's voluntary compliance guidelines and the relevant compliance guidance promulgated by the U.S. federal government; and/or require disclosure by pharmaceutical and device manufacturers to the government and/or public of financial interactions or other financial relationships with health care providers and other entities such as teaching hospitals (so-called "sunshine laws"). The Healthcare Reform Act requires manufacturers to submit information to the FDA on the identity and quantity of drug samples requested and distributed by a manufacturer during each year. Many of these laws and regulations contain ambiguous requirements or require administrative guidance for implementation. The laws and regulations include requirements that can be unclear in their scope, nature, and required implementation by regulated entities. If we fail to comply with such laws and regulations, in the United States or in countries outside the United States, we could be subject to penalties and administrative actions under such laws and regulations.

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***Data Privacy, Security and Breach Notification***

We are subject to data protection and privacy laws and regulations that set forth data privacy, security, and breach notification requirements. The legislative and regulatory landscape for data protection continues to evolve, and in recent years there has been an increasing focus on data protection and other data privacy and security issues. Data protection and privacy laws and regulations can be complex and are becoming more stringent over time. In the United States, numerous federal and state laws and regulations, including state data breach notification laws, state health information privacy laws and federal and state consumer protection laws govern the collection, use, disclosure and protection of health-related and other personal information. In addition to establishing restrictions on how personal information may be collected, used, and disclosed, these laws and regulations provide various rights to data subjects with respect to their personal information and establish requirements for how personal information must be secured. In addition, every state in the United States now has a data breach notification law that requires regulated entities to report certain security breaches to affected data subjects, regulators, or other entities. Failure to comply with data protection and privacy laws and regulations could result in government enforcement actions (which could include civil or criminal penalties and requirements to take corrective actions), private litigation (which may result in the award of damages against us), and/or adverse publicity, and could negatively affect our operating results, business, and reputation. In addition, we may obtain health information from third parties (e.g., healthcare providers who prescribe our products) that are themselves subject to privacy, security, and breach notification requirements under the Health Insurance Portability and Accountability Act of 1996, as amended by the Health Information Technology for Economic and Clinical Health Act (collectively, "HIPAA"). While we believe that we are neither a "covered entity" nor "business associate" subject directly to regulation under HIPAA, HIPAA's criminal provisions can apply to entities other than "covered entities" or "business associates" in certain circumstances. Accordingly, we could be subject to criminal penalties if we knowingly obtain or disclose individually identifiable health information from a HIPAA-covered entity in a manner that is not authorized or permitted.

In addition, a growing number of jurisdictions outside of the United States have enacted robust data protection and privacy laws. Certain of these laws have extraterritorial application. For example, the processing of personal data in the European Union is governed by the provisions of the General Data Protection Regulation, or GDPR, which came into effect on May 25, 2018. The GDPR applies to an entity established in the European Economic Area ("EEA") and extraterritorially to an entity outside of the EEA that offers goods or services to, or monitors the behavior of, individuals located in the EEA. Certain "special categories" of personal data, including data concerning health, are subject to enhanced protections under the GDPR. This regulation imposes several requirements on the controllers and processors of personal data, including the obligation to comply with various rights that individuals have with respect to their personal data and restrictions on the processing of personal data, and to provide notice of data processing obligations to the competent national data protection authorities. The GDPR also imposes strict rules on the transfer of personal data out of the EEA to the United States. Failure to comply with the requirements of the GDPR and the related national data protection laws of the European Economic Area Member States may result in significant fines and other administrative penalties.

In the United States, several state legislatures are considering enacting or have enacted new data privacy legislation. Such examples of legislation that have been passed are the California Consumer Privacy Act ("CCPA") and the California Privacy Rights Act ("CPRA"), which imposes many requirements on certain for-profit businesses that process the personal information of California residents. Many of the CCPA's requirements are similar to those found in the GDPR, including requiring businesses to provide notice to data subjects regarding the information collected about them and how such information is used and shared, and providing data subjects various rights, such as the right to request access to their personal information and, in certain cases, request the erasure of such personal information. The CCPA also affords California residents the right to opt-out of the "sale" of their personal information. In addition, the CCPA requires regulated businesses to implement reasonable security procedures and practices to protect personal information. The CCPA contains significant penalties for companies that violate its requirements. It also provides California residents a private right of action, including the ability to seek statutory damages, in the event of a breach involving their personal information resulting from a business's failure to implement and maintain reasonable security procedures and practices. Compliance with the CCPA, CPRA, and similar laws implemented in other states, is a rigorous and time-intensive process that may increase the cost of doing business or require companies to change their business practices to ensure full compliance.

***Antitrust and Competition Laws***

The federal government and most states have enacted antitrust laws that prohibit specific types of anti-competitive conduct, including price fixing, wage fixing, concerted refusals to deal, price discrimination and tying arrangements, as well as monopolization and acquisitions of competitors that have, or may have, a substantial adverse effect on competition. Violations of federal or state antitrust laws can result in various sanctions, including criminal and civil penalties. We believe we are in compliance with such federal and state laws, but courts or regulatory authorities may reach a determination in the future that could adversely affect our business, results of operations, financial condition and cash flows. In addition, we are subject to similar

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antitrust and anti-competition laws in foreign countries. We believe we are in compliance with such laws, however, any violation could create a substantial liability for us and also cause reputational harm in both foreign and domestic markets.

***Laws Relating to Foreign Trade***

We are subject to various federal and foreign laws that govern our international business practices with respect to payments to government officials. Those laws include the Foreign Corrupt Practices Act ("FCPA") which prohibits U.S. companies and their representatives from paying, offering to pay, promising, or authorizing the payment of anything of value to any foreign government official, government staff member, political party, or political candidate for the purpose of obtaining or retaining business or to otherwise obtain favorable treatment or influence a person working in an official capacity. In many countries, the healthcare professionals we regularly interact with may meet the FCPA's definition of a foreign government official. The FCPA also requires public companies to make and keep books and records that accurately and fairly reflect their transactions and to devise and maintain an adequate system of internal accounting controls. Companies that violate the FCPA can be subject to substantial monetary penalties and post-resolution compliance reporting obligations to the government. In addition, the costs associated with an FCPA investigation can be substantial.

Those laws also include the U.K. Bribery Act ("Bribery Act") which proscribes giving and receiving bribes in the public and private sectors, bribing a foreign public official, and failing to have adequate procedures to prevent employees and other agents from giving bribes. U.S. companies that conduct business in the United Kingdom generally will be subject to the Bribery Act. Penalties under the Bribery Act include potentially unlimited fines for companies and criminal sanctions for corporate officers under certain circumstances.

Our policies mandate compliance with all anti-bribery laws. Our operations reach many parts of the world that have experienced governmental corruption to some degree, and in certain circumstances compliance with anti-bribery laws may conflict with local customs and practices. Despite our training and compliance programs, our internal control policies and procedures may not always protect us from criminal acts committed by our employees or agents.

We are also subject to trade control regulations and trade sanctions laws that restrict or prohibit the movement of certain goods, currency, products, materials, software, services and technology to, and certain operations in, various countries or with certain persons. Our ability to transfer people and products among certain countries may be subjected to these laws and regulations.

***Health and Safety Laws***

We are also subject to various federal, state and local laws, regulations and recommendations, both in the United States and abroad, relating to safe working conditions, laboratory and manufacturing practices and the use, transportation and disposal of hazardous or potentially hazardous substances.

See Part I, Item 1A. *"Risk Factors"* of this Form 10-K for information regarding certain risks related to reimbursement and regulation.

**Environmental Matters**

We are subject to various federal, state and local laws and regulations relating to the protection of the environment, human health and safety in the United States, and in other jurisdictions in which we operate. Our operations, like those of other radiopharmaceutical companies, involve the transport, use, handling, storage, exposure to and disposal of materials and wastes regulated under environmental laws, including hazardous and radioactive materials and wastes. If we violate these laws and regulations, we could be fined, criminally charged or otherwise sanctioned by regulators. We believe that our operations currently comply in all material respects with applicable environmental laws and regulations.

Certain environmental laws and regulations assess liability on current or previous owners or operators of real property for the cost of investigation, removal or remediation of hazardous materials or wastes at those formerly owned or operated properties or at third party properties at which they have disposed of hazardous materials or wastes. In addition to cleanup actions brought by governmental authorities, private parties could bring personal injury, property damage or other claims due to the presence of, or exposure to, hazardous materials or wastes. We currently are not party to any claims or any obligations to investigate or remediate any material contamination at any of our facilities, however, if we were found to be liable under one or more of these laws or regulations, it could create a substantial liability.

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We are required to maintain a number of environmental permits and nuclear licenses for our North Billerica campus, which includes our primary manufacturing, packaging and distribution facility. In particular, we must maintain a nuclear byproducts materials license issued by the Commonwealth of Massachusetts. This license requires that we provide financial assurance demonstrating our ability to cover the cost of decommissioning and decontaminating ("D&D") the North Billerica site at the end of its use as a nuclear facility. We store low level radioactive waste at our facilities until the materials are below regulatory limits, as allowed by our licenses and permits. As of December 31, 2025, we estimate the D&D cost of all of our manufacturing sites to be approximately $20.4 million. As of December 31, 2025 and 2024, we have a liability of approximately $0.1 million and $23.3 million, respectively associated with our asset retirement obligations. The liability for the decommissioning obligation reflects that, in 2025, $17.5 million was reclassified to liabilities held for sale as a result of the sale of the assets and liabilities associated with the Company's SPECT business, which was completed on January 1, 2026 (see Note 8 *"Assets and Liabilities Held for Sale"* to our consolidated financial statements included in Part II, Item 8 *"Financial Statements and Supplementary Data"* of this Form 10-K. We currently provide this financial assurance in the form of a surety bond.

We also actively monitor and seek to reduce our solid waste, energy and water usage, wastewater discharge and greenhouse gas emissions. We generally contract with third parties for the disposal of waste generated by our operations. In 2020, we developed a stormwater management operations and maintenance plan to minimize stormwater pollution from high impact activities. Improvements we made include (i) the regular inspection and cleaning of catch basins and piping to reduce sediment and debris wash out to adjacent wetlands; (ii) increasing street and parking lot cleaning to reduce pollutant run off; (iii) updating our snow removal plan at our North Billerica campus to reduce the impact to adjacent wetlands; and (iv) using salt brine as a pretreatment for winter storms to reduce the amount of salt use and run off.

With respect to sustainability, we track and monitor our energy use, water generation and a limited scope of greenhouse gas emissions. Since 2022, we have powered our North Billerica campus with renewable wind energy through a contract with National Grid.

We use third-party environmental software to track available environmental data fields and in 2024 expanded our scope to include data for all of our locations. The implementation of this software rapidly improved our efficiency in data collection and reporting. To drive continuous improvement, we compare our usage data against prior annual baselines, national medians, and similar businesses.

Environmental laws and regulations are complex, change frequently and have become more stringent over time. While we have budgeted for future capital and operating expenditures to maintain compliance with these laws and regulations, we cannot assure you that our costs of complying with current or future environmental protection, health and safety laws and regulations will not exceed our estimates or adversely affect our results of operations and financial condition. Further, we cannot assure you that we will not be subject to additional environmental claims for personal injury or cleanup in the future based on our past, present or future business activities. While it is not feasible to predict the future costs of ongoing environmental compliance, it is possible that there will be a need for future provisions for environmental costs that, in management's opinion, are not likely to have a material effect on our financial condition, but could be material to the results of operations in any one accounting period.

See Part I, Item 1A. *"Risk Factors"* of this Form 10-K for information regarding certain risks associated with environmental matters.

**Human Capital Management**

As of December 31, 2025, we had 1,193 employees, of which 1,056 were located in the United States and 137 were located internationally. None of our employees are represented by a collective bargaining agreement, and we believe that our relationship with our employees is good.

***Inclusion, Ethics and Compliance***

We believe that supporting our local community and instilling an inclusive, ethical and compliant culture makes us an employer of choice, allows us to maintain good standing with our employees, the regulatory authorities and our customers, and benefits our stockholders in the long run.

Five of ten of the directors on our Board, including our Chairperson, are women, and 45% of our senior leaders, holding the position of Vice President or above self-identify as women. Approximately 43% of our employees self-identify as women. We continue to strive to improve our inclusion beyond gender, and we require recruiters working with us to present an inclusive candidate slate for posted positions as we believe that we benefit from having a skilled team with a diversity of viewpoints, backgrounds and experiences.

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We are committed to promoting a culture of ethics and compliance. Our Code of Conduct and Ethics reflects our commitment to corporate integrity and the underlying business practices and principles of behavior that support this commitment. Each year our employees complete mandatory training that includes anti-bribery/anti-corruption rules, insider trading prohibitions, confidentiality obligations, as well as specialized training in healthcare industry marketing practices among other things. We have a formal Ethics and Compliance Committee that develops, implements and oversees our ethics and compliance programs. We also have a Supplier Code of Conduct, and we seek to do business with minority-owned, female-owned and other inclusive businesses and organizations (including those owned or operated by veterans and disabled veterans) that appropriately reflect the communities in which we operate and the customer base we serve, equip us with a deeper understanding of challenges impacting our communities and customers, and enable us to provide more innovative solutions and better outcomes.

***Compensation and Benefits***

We seek to provide pay, benefits, and services that are competitive to market and create incentives to attract and retain employees. Our compensation package includes, among other things, market-competitive pay, cash bonuses, healthcare and defined contribution plan benefits, paid time off and family leave, and, to certain levels of employees, restricted stock and other equity grants, as well as the option to participate in our nonqualified deferred compensation plan. We are focused on pay equity and regularly assess pay among similar roles and responsibilities throughout our organization and in comparison to our peer group.

***Communication and Engagement***

We believe that our success depends on employees understanding how their work contributes to our overall strategy. To this end, we utilize a variety of channels to facilitate open and direct communication, including: (i) quarterly town hall meetings for our entire company; (ii) regular ongoing update communications, including through monthly newsletters and our intranet site; and (iii) an externally administered whistleblower hotline and website that is prominently advertised to our employees, and a whistleblower's anonymity is protected, if so requested. We also established various employee recognition award programs to recognize and reward employees for specific outstanding accomplishments and to foster a positive employee relations climate.

***Health, Wellness and Safety***

We are committed to the health and safety of our employees, patients and other partners in the healthcare community. We work to promote an environment of awareness and shared responsibility for safety and regulatory compliance throughout the Company, in order to minimize risks of injury, exposure, or business impact.

**Corporate History**

Founded in 1956 as New England Nuclear Corporation, our medical imaging diagnostic business was purchased by E.I. du Pont de Nemours and Company ("DuPont") in 1981. Bristol Myers Squibb ("BMS") subsequently acquired our diagnostic medical imaging business as part of its acquisition of DuPont Pharmaceuticals in 2001. In January 2008, Avista Capital Partners, L.P., Avista Capital Partners (Offshore), L.P. and ACP-Lantern Co-Invest, LLC formed Lantheus Holdings and acquired our medical imaging business from BMS. On June 30, 2015, we completed an initial public offering of our common stock. Our common stock is traded on the NASDAQ Global Market under the symbol "LNTH".

**Available Information**

Our global Internet site is www.lantheus.com. We routinely make available important information, including copies of our Form 10-K, Quarterly Reports on Form 10-Q ("Form 10-Q"), Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, as soon as reasonably practicable after those reports are electronically filed with, or furnished to, the Securities and Exchange Commission ("SEC"), free of charge on our website at investor.lantheus.com. We recognize our website as a key channel of distribution to reach public investors and as a means of disclosing material non-public information to comply with our disclosure obligations under SEC Regulation FD. Information contained on our website shall not be deemed incorporated into, or to be part of this Form 10-K, and any website references are not intended to be made through active hyperlinks.

Our reports filed with, or furnished to, the SEC are also available on the SEC's website at www.sec.gov, and for Form 10-K and Form 10-Q, in an Inline Extensible Business Reporting Language ("iXBRL") format. iXBRL is an electronic coding language used to create interactive financial statement data over the Internet.

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**Item 1A. Risk Factors**

*You should carefully consider the following risks. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties that we are unaware of, or that we currently believe are not material, may also become important factors that adversely affect our business. These risks could materially affect our business, results of operations or financial condition, cause the trading price of our outstanding common stock to decline materially or cause our actual results to differ materially from those expected or those expressed in any forward-looking statements made by us or on our behalf. See "Cautionary Note Regarding Forward-Looking Statements" and the risks of our businesses described elsewhere in this Annual Report on Form 10-K ("Form 10-K").*

***<u>Risks Related to Our Portfolio of Commercial Products</u>***

***Continued substantial revenue contribution from PYLARIFY is dependent on (A) the ability of positron emission tomography ("PET") manufacturing facilities ("PMFs") to manufacture PYLARIFY to meet product demand, including ensuring that PYLARIFY is available at the specific time of day preferred by the end-user, (B) our ability to ensure adequate coding, coverage and payment for PYLARIFY, (C) our ability to promote PYLARIFY to customers and to maintain PYLARIFY as a widely utilized prostate-specific membrane antigen ("PSMA") PET imaging agent, which has been impacted by the expiration of transitional pass-through payment status*** ("***TPT Status") on December 31, 2024, (D) whether and when a potential generic version of PYLARIFY may enter the market and (E) our ability to clinically and commercially differentiate PYLARIFY from competitive products.***

To manufacture PYLARIFY, we assembled and qualified a nationwide network of PMFs with radioisotope-producing cyclotrons that make F-18, which has a 110-minute half-life, so PYLARIFY is manufactured and distributed rapidly to end-users. Because each of the PMFs manufacturing these products is deemed by the U.S. Food and Drug Administration ("FDA") to be a separate manufacturing site, each has to be separately approved by the FDA. Although PYLARIFY is broadly available across the United States, we will continue to seek qualification for additional PMFs in 2026 and can give no assurance that additional PMF sites will have the capacity to produce PYLARIFY in addition to other products they may already produce, including other F-18-based products, that those PMF sites will be willing to commit to manufacture PYLARIFY and successfully complete the technology transfer process necessary to manufacture PYLARIFY, that the FDA will continue to approve PMFs in accordance with our expansion plans to meet product demand, that PYLARIFY will be available at the specific time of day preferred by the end-users or that our expansion plans accurately predict demand growth. To the extent that PYLARIFY is not available at preferred times or the reimbursement economics for PYLARIFY are no longer favorable, end users have, in some instances, switched all or a portion of their use to available competitive products. If FDA approval of manufacturing sites is delayed or withdrawn or if FDA requirements relating to site approval change impacting our ability to meet demand for PYLARIFY or end users scheduling needs or if we invest to extend our PMF network and demand does not grow to meet the expanded capacity, our business, results of operations, financial condition and cash flows would be adversely affected.

Ensuring adequate coding, coverage, and payment for PYLARIFY is critical, including not only coverage from Medicare, Medicaid and other government payors, as well as private payors, but also appropriate payment levels to adequately cover our customers' costs of using PYLARIFY in PET/computed tomography ("CT") imaging procedures. The Healthcare Procedure Coding System code for PYLARIFY, which enables streamlined billing, went into effect as of January 1, 2022. PYLARIFY also had TPT Status from January 1, 2022 until December 31, 2024, which enabled traditional Medicare to provide an incremental payment for PET/CT scans performed with PYLARIFY in the hospital outpatient setting. After expiry of TPT Status, diagnostic radiopharmaceuticals, such as, PYLARIFY, historically would not have been separately reimbursed in the hospital outpatient setting but rather would be bundled into the facility payment a hospital receives for a PET/CT imaging procedure, and the facility payment may not have adequately covered the total cost of the procedure with the diagnostic radiopharmaceutical for all hospitals. In November 2024, the Centers for Medicare & Medicaid Services ("CMS") released the final rule for its calendar year 2025 Medicare Hospital Outpatient Prospective Payment System (the "CMS 2025 OPPS Rule"). The CMS 2025 OPPS Rule became effective on January 1, 2025, pursuant to which previously packaged diagnostic radiopharmaceuticals were "unbundled" with payments being made separately for any diagnostic radiopharmaceutical with a per day cost greater than $630 based on their mean unit cost ("MUC"). In November 2025, CMS released the final rule for its calendar year 2026 Medicare Hospital Outpatient Prospective Payment System, which continues to provide for separate payment for diagnostic radiopharmaceuticals with per day costs greater than $655 based on their MUC. While these changes enable hospitals that use innovative diagnostic radiopharmaceuticals, including PYLARIFY, to continue to be paid separately by CMS following the expiry of TPT Status, that payment is made at a rate that reflects MUC. As a result, as of January 1, 2025, the payment rate for PYLARIFY is based on MUC and is less than the Average Sales Price ("ASP")-based amount that was paid during TPT Status. Although PYLARIFY continues to be paid separately, other competitive PSMA PET imaging agents continue to have TPT Status after December 31, 2024, including a new PSMA PET imaging agent with TPT Status effective on October 1, 2025, and hospital use of those products, for patients with traditional Medicare fee-for-service ("FFS") in the hospital outpatient setting, generally will be paid separately based on ASP plus six percent rather than on MUC, which provides a financial incentive to use an imaging agent other than PYLARIFY. We have reported and continue to report ASP for PYLARIFY, have engaged with CMS on the methodology for reporting ASP, and we will continue to work with coalition partners and CMS to support using ASP rather than MUC to calculate payment for diagnostic radiopharmaceuticals in future years similar to the way Medicare Outpatient Prospective Payment System ("OPPS") currently pays for other drugs, biologics, and therapeutic radiopharmaceuticals. However, we can give

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no assurances that we will be successful in those efforts or that the availability of TPT Status for other diagnostic radiopharmaceuticals will not continue to impact clinical decision making regarding which product to use for all patient populations, which could have an adverse effect on our business, results of operations, financial condition and cash flows.

Continued substantial revenue contribution from PYLARIFY is also dependent on our ability to promote PYLARIFY to customers, to clinically and commercially differentiate PYLARIFY from other products on the market, to enter into and realize the benefits of strategic contracts with customers and to maintain PYLARIFY as a widely utilized PSMA PET imaging agent in an increasingly competitive environment in which other PSMA PET imaging agents have been approved, for which discounts related to those other agents have been offered to customers and for which TPT Status may be available. PYLARIFY currently competes with three commercially available Gallium-68-based PSMA PET imaging agents, two from Telix Pharmaceuticals Limited and one from Novartis AG and an F-18 PSMA PET imaging agent from Blue Earth Diagnostics Ltd. ("Blue Earth"), as well as other non-PSMA PET imaging agents. The potential for future generic entrants to the market due to the expiry of PYLARIFY's new chemical entity exclusivity period in 2026 could also generate increased competition for PYLARIFY. Substantial revenue contribution from PYLARIFY will also depend on our ability to clinically differentiate PYLARIFY from competitive products so that customers continue to choose PSMA PET with PYLARIFY for appropriate patients because of its clinical differentiation and despite the loss of TPT Status, including through flexible and dependable access to PYLARIFY nationally, a best-in-class customer experience and continued promotion and education regarding PYLARIFY's clinical and commercial attributes. Our ability to negotiate and realize the benefits from strategic contracts is also key to our ability to maintain and expand market share. Despite these efforts, we have seen net price compression and lost market share to certain competitors that have later approved products with TPT Status at a time when PYLARIFY's TPT Status has expired or that have offered rebates to customers, and we may experience further net price compression or lose market share to these or future competitive products due to reimbursement status, new clinical data that may emerge, the impact of any potential generic entrant to the market or the potential that additional rebates may be offered to customers, including when a PSMA PET imaging agent is purchased as one part of a broader portfolio of products. Such loss of market share could have an adverse impact on our business, results of operations, financial condition and cash flows.

Our success in continuing to generate substantial revenue from PYLARIFY also depends, in part, on our successfully establishing the use of PYLARIFY for new patient populations, such as patients with favorable intermediate-risk prostate cancer, and potentially for updates to the label, including for patient selection for PSMA-targeted therapeutics. For example, we are conducting a clinical trial to determine whether PYLARIFY can detect the presence or absence of additional prostate cancer lesions in patients with favorable intermediate-risk prostate cancer, as well as how it may change the patient's intended management, but cannot predict whether the outcome of this clinical trial will support such a use of PYLARIFY. Similarly, we believe the approval of PLUVICTO for the treatment of adults with PSMA-positive metastatic castration-resistant prostate cancer created a new addressable market for the use of PSMA PET imaging in patient selection for PSMA-targeted therapy. We can give no assurances as to how current clinical practice may evolve. To the extent we are unsuccessful in establishing the use of PYLARIFY in new patient populations, such lack of success could have an adverse impact on our business, results of operations, financial condition and cash flows.

***We depend on some of our PMF partners to generate sales, accept, produce and deliver orders, collect payments and report related information for PYLARIFY.*** 

PYLARIFY is sold in the United States to hospitals, independent imaging centers and government facilities and sales are generated through an internal PYLARIFY sales team, as well as sales teams at some of our PMF partners. We generally do not use group purchasing arrangements to sell PYLARIFY and require each customer to enter into a contract directly with us or our PMF partners. Our ability to continue to receive substantial revenue contribution from PYLARIFY depends, in part, on our ability, and the ability of some of our PMF partners on our behalf, to continue to enter into commercially beneficial arrangements directly with the hospitals, independent imaging centers and government facilities that we serve. Any delay or inability to enter into these arrangements, including our ability to negotiate favorable financial terms in these agreements, or if, despite favorable financial terms, the customers do not continue to purchase PYLARIFY, could have an adverse impact on our business, results of operations, financial condition and cash flows.

We also depend on some of our PMF partners to accept, produce and deliver orders, invoice customers, collect payments and to report related information to us. To the extent our PMF partners are unsuccessful in generating sales, accepting, producing and delivering orders, invoicing customers, collecting payments or reporting to us, or where we are responsible, if we are unsuccessful in accepting orders, ensuring timely production and delivery of those orders by a PMF, or if invoices to customers or collection of payments is delayed, such an event could have a material adverse effect on our business, results of operations, financial condition and cash flows. We are in the process of transitioning responsibility for invoicing certain customers from a PMF partner to the Company. This transition includes potential risks, including risks from a disruption during the transition or our inability to seamlessly move from one invoicing system to the other. The transition will also require our customers to take certain actions to transition from the PMF to the Company when paying invoices which is out of our control. These risks, and other potential risks that we may not have accounted for as part of our transition planning, could result in delayed or inaccurate invoicing, loss of revenue, loss of customers or reputational harm which could have an adverse impact on our business, results of operations, financial condition and cash flows.

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We and our PMF partners also use third-party software to accept orders placed by customers and to record shipping and administrative status of orders. We rely in part on information from third-party software and from our PMF partners in connection with how we report and collect payments for PYLARIFY. To the extent we are unable to accept orders or access, verify or reconcile data, such event could have a material adverse effect on our business, results of operations, financial condition and cash flows.

***Potential generic competitors may seek to enter the market as a result of regulatory exclusivity expiration, including the expiry of NCE regulatory exclusivity for PYLARIFY in May 2026.***

Following the expiration of regulatory exclusivity, we may face increased competition from generic products, including through abbreviated approval pathways under the Hatch-Waxman Act or as a result of actions brought under the CREATES Act. The likelihood of entry or anticipated entry of such competing products cannot be predicted and could significantly reduce demand for our products, pressure pricing and reimbursement, and adversely affect our business, results of operations, and financial condition.

PYLARIFY currently has six patents listed in the FDA's publication, "*Approved Drug Products with Therapeutic Equivalence Evaluations"* (the Orange Book"), the last of which expires in 2037. PYLARIFY also holds a five-year new chemical entity ("NCE") regulatory exclusivity, which expires on May 26, 2026. As described further under Part I, Item 1., *"Business - Regulatory Matters-Hatch Waxman Act,*" of this Form 10-K, the FDA is allowed to accept an Abbreviated New Drug Application ("ANDA") or 505(b)(2) application one year prior to the NCE expiration date under certain circumstances, specifically, from a generic challenger that includes a "Paragraph IV" Certification against each of the six patents we have listed in the Orange Book. If a Paragraph IV Certification is made, we could elect to pursue Hatch-Waxman litigation and trigger the 30-month stay described under Part I, Item 1., "*Business - Intellectual Property Matters – Patent-related Aspects of Regulatory Matters,"* of this Form 10-K, during which period the FDA would be prohibited from granting full approval to the challenger's application. As of the date of filing of this Form 10-K, we have not received any notice of a Paragraph IV Certification, but we can give no assurance that we will not receive notice of a Paragraph IV Certification in the future. If an ANDA or 505(b)(2) applicant were to file prior to the expiration of our NCE regulatory exclusivity, and we were to timely sue pursuant to the Hatch-Waxman Act, then the automatic stay of FDA approval could run until November 26, 2028, calculated as 30 months from the NCE expiration date (May 26, 2026), unless prior to such date the generic challenger successfully invalidates or proves non-infringement of all six Orange Book-listed patents or the lawsuit is otherwise settled. If litigation is ongoing in November 2028, then any generic launch would be at risk of the litigation determining that the generic challenger was infringing one or more of our patents. Patent litigation is complex and can be protracted and expensive, so if we were to receive such a notice and to challenge the applicant, this could have a negative effect on our business, results of operations and financial condition.

***If we are unable to grow the appropriate use of DEFINITY in suboptimal echocardiograms in the face of competition from other existing echocardiography agents and potential generic competitors as a result of patent and regulatory exclusivity expirations or maintain its position as the most utilized ultrasound enhancing agent.***

The growth of our business is also dependent on our ability to continue to grow the appropriate use of DEFINITY in suboptimal echocardiograms. DEFINITY currently competes with ultrasound enhancing agents produced by GE HealthCare Limited ("GE Healthcare") and Bracco Diagnostics Inc. ("Bracco"), as well as echocardiography without ultrasound enhancing agents and other non-echocardiography agents, and there is the potential for future competition from generic manufacturers who may submit regulatory applications using DEFINITY as the reference listed drug (RLD).

We launched DEFINITY in 2001, and we continue to maintain patent and patent applications in connection with DEFINITY, both in the United States and internationally. In the United States for DEFINITY we have Orange Book-listed method-of-use patents, that extend until 2037, as well as additional manufacturing patents that are not Orange Book-listed expiring in 2037.

Because our Orange Book-listed composition of matter patent expired in June 2019, we may face generic DEFINITY challengers (see Part I, Item 1., *"Business - Regulatory Matters - Hatch Waxman Act"* of this Form 10-K*)*. As of the date of filing of this Form 10-K we have not received any notice of a generic applicant pursuant to the Hatch Waxman Act, but we can give no assurance that we will not receive a notice in the future. If we were to receive any such notice in the future, we would review the notice, evaluate the strength of any potential patent infringement claims, and be prepared to challenge the applicant in a timely fashion, which would thereby trigger the stay of up to 30 months. We can give no assurance that we would have grounds to file a patent infringement suit, that we would obtain the full 30-month stay, that we would be successful on the merits asserting that an applicant infringes our Orange Book-listed patent, or that we would be successful defending the validity of our Orange Book-listed patent in court or in a U.S. Patent and Trademark Office ("USPTO") adversarial proceeding. We recently received a request for samples of DEFINITY pursuant to the Creating and Restoring Equal Access to Equivalent Samples ("CREATES") Act of 2019, a U.S. federal law designed to facilitate generic and biosimilar drug development. A request under the CREATES Act may indicate that a generic or biosimilar manufacturer is pursuing development of a competitive version of DEFINITY, as access to reference product samples or related safety protocols is generally sought to conduct studies required for regulatory approval. While such a request does not guarantee that a competing product will be approved or commercialized, it may signal increased risk of future generic or biosimilar entry and related litigation. As stated above in connection with the Hatch Waxman Act, if

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approval for such a generic product is sought by a competitor, we will evaluate the strength of any potential patent infringement claims and be prepared to challenge the applicant in a timely fashion. As a general matter, patent litigation is complex and can be protracted and expensive, so if we were to challenge an applicant, this could have a negative effect on our business, results of operations and financial condition.

If we are not able to continue to grow DEFINITY sales, which depend on one or more of the growth of echocardiograms, the growth in the appropriate use of ultrasound enhancing agents in suboptimal echocardiograms, and our ability to maintain and grow our leading position in the U.S. echocardiography ultrasound enhancing agent market, we may not be able to continue to grow the revenue and cash flow of our business, which could have a negative effect on our business, results of operations and financial condition.

***Our ability to grow Neuraceq is dependent on (A) our ability to engage our existing PYLARIFY customers to introduce Neuraceq to those customers, (B) expanded geographical access to Neuraceq, which in turn depends on our ability to increase Neuraceq manufacturing capacity at existing manufacturing sites and add additional sites, (C) increased adoption and utilization of beta-amyloid PET and anti-amyloid therapeutics, (D) increased utilization based on the updated Neuraceq prescribing information indicating that Neuraceq can be used for patient selection for anti-amyloid therapies where the prescribing information for the therapy so states, (E) our ability to educate customers on the approved uses of Neuraceq, including its ability to quantify the degree of amyloid burden in the brain and (F) our ability to clinically differentiate Neuraceq from competitive products so that customers choose Neuraceq for appropriate patients because of its clinical attributes and despite the disparity in MUC payment rates for Neuraceq compared to other products used for traditional Medicare patients in the hospital outpatient setting.***

Similar to PYLARIFY, Neuraceq is manufactured by a nationwide network of PMFs with radioisotope-producing cyclotrons that make F-18, which has a 110-minute half-life, so Neuraceq is manufactured and distributed rapidly to end-users, and each PMF manufacturing site has to be separately approved by the FDA. Currently, Neuraceq growth is dependent on our ability to expand and increase capacity at existing sites and a corresponding increase in use by customers. We also continue to seek qualification for additional PMFs in 2026 and we can give no assurance that additional PMF sites will have the capacity to produce Neuraceq in addition to other products they may already produce, including other F-18-based products, that those PMF sites will be willing to commit to manufacture Neuraceq and successfully complete the technology transfer process necessary to manufacture Neuraceq, that the FDA will continue to approve PMFs in accordance with our expansion plans to meet product demand or that Neuraceq will be available at the specific time of day preferred by the end-users or that our expansion plans accurately predict demand growth. If production capacity is not available, FDA approval of manufacturing sites is delayed or withdrawn, FDA requirements relating to site approval change in a way that impacts our ability to meet demand for Neuraceq or end users scheduling needs or if we invest to extend our PMF network and demand does not grow to meet the expanded capacity, our business, results of operations, financial condition and cash flows would be adversely affected.

Ensuring adequate coding, coverage, and payment for Neuraceq is critical, including not only coverage from Medicare, Medicaid and other government payors, as well as private payors, but also appropriate payment levels to adequately cover our customers' costs of using Neuraceq in PET/ CT imaging procedures. Neuraceq was approved by the FDA in 2014. When used for traditional Medicare patients in the hospital outpatient setting, Neuraceq is paid based on its MUC; however, Neuraceq currently competes with two commercially available F-18 beta-amyloid-targeting PET imaging agents from Eli Lilly and Co ("Lilly") and GE Healthcare, and those other competitive imaging agents are currently being paid based on a higher MUC rate. While we have engaged with CMS to support the use of ASP instead of MUC, we can give no assurances that CMS will move to the use of ASP in the near term or that the availability of a higher MUC payment rate for other diagnostic radiopharmaceuticals will not continue to impact clinical decision making regarding which product to use for all patient populations, which could have an adverse effect on our business, results of operations, financial condition and cash flows.

In addition, growth and revenue contribution from Neuraceq will also depend on our ability to clinically differentiate Neuraceq from competitive products and to educate customers on the approved uses of Neuraceq, including its ability to quantify the degree of amyloid burden in the brain so that customers choose Neuraceq for appropriate patients because of its clinical attributes and despite the disparity in MUC payment rates for Neuraceq compared to other products used for traditional Medicare patients in the hospital outpatient setting. Further, certain currently approved therapeutic products in the United States require confirmation of the presence of amyloid beta pathology prior to initiating treatment. If this requirement in the prescribing information for these products were to change it could have an adverse effect on our business, results of operations, financial condition and cash flows.

***Our dependence upon third parties for the manufacture and supply of a substantial portion of our products, including PYLARIFY and Neuraceq, and certain key components and raw materials and upon our in-house manufacturing for DEFINITY could prevent us from delivering our products to our customers in the required quantities, within the required timeframes, or at all, which could result in order cancellations, decreased revenues and reputational harm.***

We obtain a substantial portion of our products from third party manufacturers and suppliers.

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PYLARIFY and Neuraceq are manufactured by a nationwide network of PMFs with radioisotope-producing cyclotrons. The radioisotope in both PYLARIFY and Neuraceq is fluorine-18, which has a 110-minute half-life, so PYLARIFY and Neuraceq are manufactured and distributed rapidly to end-users. Because each of the PMFs manufacturing PLYARIFY and Neuraceq is deemed by the FDA to be a separate manufacturing site, each has to be separately approved by the FDA to manufacture each product. Although we have qualified and continue to qualify additional PMFs, we can give no assurance that additional PMF sites will have the capacity to produce PYLARIFY and Neuraceq in addition to other products they may already produce, including other F-18-based products, that those PMF sites will be willing to commit to manufacture PYLARIFY and Neuraceq and successfully complete the technology transfer process necessary to manufacture PYLARIFY and Neuraceq, that the FDA will continue to approve PMFs in accordance with our planned roll-out schedule or that the PMFs will not experience issues with their ability to manufacture and deliver PYLARIFY or Neuraceq to our customers. If FDA approval of manufacturing sites is delayed or withdrawn, if FDA requirements relating to site approval change, or our PMF sites experience manufacturing issues, our business, results of operations, financial condition and cash flows could be adversely affected.

We rely on Jubilant HollisterStier as a substantial supplier of DEFINITY. We have additional supply arrangements for active pharmaceutical ingredients, excipients, packaging materials and other materials and components. In addition, for reasons of quality assurance or cost-effectiveness, we purchase certain components and raw materials from sole suppliers (including, for example, the specially designed chemistry synthesis boxes and consumables used in the manufacturing of each of PYLARIFY and Neuraceq and the lipid blend material and perflutren gas used in the manufacturing of DEFINITY). Because we do not control the actual production of many of the products we sell and many of the raw materials and components that make up the products we sell, if a supplier is unable to provide required materials or equipment and a readily available substitute does not exist, we may be subject to delays caused by interruption in production based on events and conditions outside of our control, which could disrupt manufacturing, increase expenses, and negatively impact our business, financial condition, and results of operations.

If we or one of our manufacturing partners or suppliers experiences an event, including a supply chain disruption, shortage or delay, logistics issue, labor dispute, natural disaster, fire, power outage, machinery breakdown, security problem, failure to meet regulatory requirements, product quality issue, technology transfer issue, cybersecurity breach or other issue, we or one of our manufacturing partners or suppliers may be unable or unwilling to manufacture the relevant products at previous levels or on the forecasted schedule, if at all, our business, results of operations, financial condition and cash flows could be adversely affected and result in reputational harm. Due to the stringent regulations and requirements of the governing regulatory authorities regarding the manufacture of our products, we may not be able to quickly restart manufacturing at a third party or our own facility or establish additional or replacement sources for certain products, components or materials, which could also adversely affect our business, results of operations, financial condition and cash flows and result in reputational harm.

***We can give no assurance that Curium Pharma ("Curium") will continue to be successful with its commercialization of PYLCLARI in Europe or that GE Healthcare will successfully develop and commercialize piflufolastat F-18 in Japan.***

We licensed exclusive rights to develop and commercialize piflufolastat F-18 (marketed in the United States as PYLARIFY) to Curium in Europe and to GE Healthcare in Japan. Under the terms of the collaboration with Curium, we are entitled to double-digit royalties on net sales of piflufolastat F-18, which is commercialized in Europe under the name PYLCLARI. PYLCLARI is commercially available in over ten countries in Europe. We cannot assure that Curium will continue to be successful in commercializing it in Europe. Any failure or significant delay in Curium's ability to continue making PYLCLARI available in additional countries in Europe may harm our business and delay or prevent us from being able to generate additional future royalty revenue from product sales. On September 24, 2025, we announced an exclusive licensing agreement for GE Healthcare to develop, manufacture, and commercialize piflufolastat in Japan for prostate cancer diagnostics and companion diagnostic use. Under the terms of the agreement, GE Healthcare paid us an upfront license fee and will pay us development milestones and tiered royalties based on product sales in Japan. We cannot assure that GE Healthcare will be successful in developing, manufacturing or commercializing it in Japan and any failure or significant delay may harm our business and delay or prevent us from being able to receive milestone payments and generate future royalty revenue.

***Our just-in-time manufacturing of radiopharmaceutical products, including PYLARIFY and Neuraceq, relies on the reliability of our PMFs' equipment and processes, the timely receipt of radioactive raw materials and the timely shipment of finished goods, and any disruption of our supply or distribution networks could have a negative effect on our business.***

Radiopharmaceutical products, including PYLARIFY and Neuraceq, rely on radioisotopes with limited half-lives. As a result, we or our partners must manufacture, finish and distribute these products on a just-in-time basis, because the underlying radioisotope is in a constant state of decay. For example, the radioisotope used in PYLARIFY and Neuraceq is F-18, which has a 110-minute half-life, requiring that this product be manufactured and distributed within the same day to end-users. After being made on a cyclotron at a PMF, the F-18 is then combined with certain specially designed ingredients in a chemistry synthesis box to manufacture either PYLARIFY or Neuraceq. The finished product is then quality control tested and transferred to a radiopharmacist who prepares and dispenses patient-specific doses from the final product. Any delay in us receiving radioisotopes, raw materials, equipment or components from suppliers or being able to have finished products delivered to customers because of equipment failure, weather or other unforeseen issues could have a negative effect on our business, results of operations, financial condition and cash flows.

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If one of our PMFs experience an event, including a labor dispute, natural disaster, fire, power outage, machinery breakdown, security problem, failure to meet regulatory requirements, product quality issue, technology transfer issue or other issue, we may be unable to manufacture the relevant products at previous levels or on the forecasted schedule, if at all. Due to the stringent regulations and requirements of the governing regulatory authorities regarding the manufacture of our products, we may not be able to quickly restart manufacturing at a PMF facility, or establish additional or replacement sources for certain products, components or materials, which could have a negative effect on our business, results of operations, financial condition and cash flows.

***We face significant competition in our business and may not be able to compete effectively.***

The markets for our products are highly competitive and continually evolving. Our competitors for our current commercial products and leading clinical development candidates include large, global companies that are more diversified than we are and that have substantial financial, manufacturing, sales and marketing, distribution and other resources:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For PYLARIFY, our competitors currently include approved imaging agents from Telix Pharmaceuticals Limited, Blue Earth, a subsidiary of Bracco, and Novartis AG, as well as other non-PSMA PET imaging agents, and there is the potential for future competition from others who may submit regulatory applications in anticipation of PYLARIFY's NCE exclusivity expiry in May 2026.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For DEFINITY, our competitors currently include GE Healthcare and Bracco, as well as echocardiography without ultrasound enhancing agents and other non-echocardiography agents, and there is the potential for future competition from generic manufacturers who may submit regulatory applications using DEFINITY as the reference listed drug (RLD).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For Neuraceq, our competitors currently include Lilly and GE Healthcare.

Any product candidates that we successfully develop and commercialize will compete with existing products and new products that may become available in the future, not only for customers but also for manufacturing resources, including PMF site capacity, raw materials, components, equipment and radiopharmacist time and, for our diagnostic imaging agents, staff at imaging centers and hospitals and PET scanner capacity. For example, for PNT2003, our principal competitors may include Novartis AG; ITM Radiopharma; Curium, and RayzeBio (acquired by Bristol Myers Squibb). For MK-6240 and NAV-4694, our principal competitors may include Lilly and GE Healthcare. For LNTH-2501, our principal competitors may include Curium and Novartis AG.

We cannot anticipate the actions of our current or future competitors in the same or competing modalities, such as significant price reductions on products that are competitive with our own, the ability to offer a portfolio of products and offer price reductions across a portfolio, development of new products that are more cost-effective or have superior performance or higher reimbursement than our current products, potential future products or the introduction of generic versions of our proprietary products, the ability to secure better manufacturing locations or times for production of current or future products that limit the availability of necessary raw materials, production equipment, components or radiopharmacist time or, for our diagnostic agents, PET scanner capacity. In addition, distributors of our products could attempt to shift end-users to competing diagnostic modalities and products, or bundle the sale of a portfolio of products, in either case to the detriment of our specific products. Our current or future products could be rendered obsolete or uneconomical as a result of these activities or other market dynamics that are beyond our control.

Further, the radiopharmaceutical industry continues to evolve strategically, with several market participants recently acquired by larger companies that may have more significant resources than ours. In addition, the supply-demand dynamics of the industry are complex because of large market positions of some participants, legacy businesses, government subsidies (in particular, relating to the manufacture of radioisotopes), and group purchasing arrangements and there are often limited sources available for isotopes and raw materials, including components and equipment, used in the manufacturing of our product and product candidates. We cannot predict what impact new owners, new operators and the involvement of larger companies with more significant resources may have on the strategic decision-making of our competitors, customers and suppliers, and such decision-making could have a material adverse effect on our business, results of operations, financial condition and cash flows.

In addition, in order to remain competitive, in certain circumstances, we provide customers with rebates, which we estimate as a reduction to revenue at the time revenue is recognized. Judgment is required in making these estimates. These rebates can include performance-based offers that are based on attaining contractually specified sales volumes, Medicaid rebate programs for our products, administrative fees of group purchasing organizations and certain distributor-related commissions. The calculation of the accrual for these rebates is based on an estimate of the third-party's expected purchases and the resulting applicable contractual rebate to be earned over a contractual period and our estimates can vary by program, product, type of customer and geographic location. In determining the appropriate accrual amount, we consider the contractual terms, historical sales, and changes in sales trends. Specific rebates can impact year-over-year individual product revenue growth trends. If any of our assessments, assumptions, experiences or judgments are not indicative or accurate estimates of our future experience, our results could be impacted.

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***Ultrasound enhancing agents may cause side effects which could limit our ability to sell DEFINITY.***

DEFINITY is an ultrasound enhancing agent based on perflutren lipid microspheres. In 2007, the FDA received reports of deaths and serious cardiopulmonary reactions following the administration of ultrasound enhancing agents used in echocardiography. Four of the 11 reported deaths were caused by cardiac arrest occurring either during or within 30 minutes following the administration of the ultrasound enhancing agent; most of the serious but non-fatal reactions also occurred in this time frame. As a result, in October 2007, the FDA requested that we and GE Healthcare, which distributes Optison, a competitor to DEFINITY, add a boxed warning to these products emphasizing the risk for serious cardiopulmonary reactions and that the use of these products was contraindicated in certain patients. The FDA modified the boxed warning language several times such that after changes in January 2017, the safety labeling for DEFINITY, Optison and Bracco's ultrasound enhancing agent, Lumason, all had similar safety labeling. In April 2021, after reviewing certain adverse events that occurred in patients with a prior history of allergic reactions to polyethylene glycol ("PEG"), an inactive excipient in both DEFINITY and Lumason, the FDA and the marketing authorization holders of these products agreed to an additional contraindication for use of these products, including advising clinicians to assess patients for prior PEG hypersensitivity before administering these products. In June 2023, after reviewing adverse events that occurred in patients with history of sickle cell disease, we agreed with the FDA to amend the label to advise clinicians that if a patient with sickle cell disease experiences acute pain episodes following DEFINITY administration, use of DEFINITY in that patient should be discontinued. If additional safety issues arise (not only with DEFINITY but also potentially with Optison and Lumason), this may result in unfavorable changes in labeling or result in restrictions on the approval of our product, including removal of the product from the market. Lingering safety concerns about DEFINITY among some healthcare providers or future unanticipated side effects or safety concerns associated with DEFINITY could limit expanded use of DEFINITY and have a material adverse effect on the unit sales of this product and our financial condition and results of operations.

***<u>Risks Related to Reimbursement and Regulation</u>***

***Many of our customers are highly dependent on payments from third-party payors, including government sponsored programs, particularly Medicare, in the United States and other countries in which we operate, and reductions in third party coverage and reimbursement rates for our products (or services provided by healthcare providers using our products) could adversely affect our business, results of operations, financial condition and cash flows.***

A substantial portion of our revenue depends on the extent to which the costs of our products purchased by our customers (or services provided by healthcare providers using our products) are reimbursed by third party payors, including Medicare, Medicaid, other U.S. government sponsored programs, non-U.S. governmental payors and private payors. These third-party payors exercise significant control over patient access and increasingly use their enhanced bargaining power to secure discounted rates and impose other requirements that may reduce demand for our products. Our customers' ability to obtain adequate reimbursement for products and services from these third-party payors affects the selection of products they purchase and the prices they are willing to pay. If Medicare and other third party payors do not provide adequate reimbursement for the costs of our products (or services provided by healthcare providers using our products), deny the coverage of the products (or those services), reduce current levels of reimbursement, or reimburse competitive products at a higher rate than that available for our products, healthcare professionals may not prescribe our products and providers and suppliers may not purchase our products.

In addition, demand for new products may be limited unless we obtain favorable reimbursement (including coding, coverage and payment) from governmental and private third party payors at the time of the product's introduction, which will depend, in part, on our ability to demonstrate that a new agent has a positive impact on clinical outcomes, and to maintain favorable reimbursement relative to competitive products. Third-party payors continually review their coverage policies for existing and new products and procedures and can deny coverage for products or procedures that include the use of our products or revise payment policies such that payments do not adequately cover the cost of our products. Even if third-party payors make coverage and reimbursement available, that reimbursement may not be adequate or may favor competitive products and these payors' reimbursement policies may have an adverse effect on our business, results of operations, financial condition and cash flows.

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Over the past several years, Medicare has implemented numerous changes to payment policies for imaging procedures in both the hospital setting and non-hospital settings (which include physician offices and freestanding imaging facilities). Some of these changes have had a negative impact on utilization of imaging services. Examples of these changes include:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Reducing payments for certain imaging procedures when performed together with other imaging procedures in the same family of procedures on the same patient on the same day in the physician office and free-standing imaging facility setting;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Making significant revisions to the methodology for determining the practice expense component of the Medicare payment applicable to the physician office and free-standing imaging facility settings which results in reduced payments for certain services;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Revising payment policies and reducing payment amounts for imaging procedures performed in the hospital outpatient settings, including the new payment policy for diagnostic radiopharmaceuticals beginning in 2025 that currently provides separate payment for PYLARIFY at a rate that reflects MUC, which is lower than the rate paid during TPT Status, and that establishes an MUC reimbursement rate for Neuraceq below that of competitive products; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Reducing prospective payment levels for applicable diagnosis-related groups in the hospital inpatient setting.

In the physician office and free-standing imaging facility setting, services provided by healthcare providers using our products are reimbursed under the Medicare physician fee schedule. Payment rates under the Medicare physician fee schedule are regularly subject to updates to effectuate various policy goals of CMS and Congress. For example, in 2022, CMS reduced Medicare fee schedule payments rates in the agency's final rulemaking, while a larger cut was put forth in the proposed rulemaking earlier that year. For 2023, CMS had finalized a reduction in the Medicare fee schedule payments rates, which was revised by Congress, pursuant to the Consolidated Appropriations Act, 2023, to a lesser reduction. Additionally, since 2019, fee schedule payments have been adjusted for certain physicians based on their performance under a consolidated measurement system (that measures performance with respect to quality, resource utilization, meaningful use of certified electronic health records technology, and clinical practice improvement activities). Physicians are eligible for a bonus based on the use of certain alternative payment models designated as "advanced" by CMS. The ongoing and future impact of these changes cannot be determined at this time.

We believe that Medicare changes to payment policies for imaging procedures applicable to non-hospital settings will continue to result in certain physician practices ceasing to provide these services and a further shifting of where certain medical imaging procedures are performed, from the physician office and free-standing imaging facility settings to the hospital outpatient setting. Changes applicable to Medicare payment in the hospital outpatient setting could also influence the decisions by hospital outpatient physicians to perform procedures that involve our products. Changes to the Medicare hospital outpatient prospective payment system payment rates, including reductions implemented for certain hospital outpatient sites, could influence the decisions by hospital outpatient physicians to perform procedures that involve our products and the risks discussed above with respect to separate payment for diagnostic radiopharmaceuticals in the hospital outpatient setting could also impact clinical decision-making.

We also believe that these changes and their resulting pressures may incrementally reduce the overall number of diagnostic medical imaging procedures performed. These changes overall could slow the acceptance and introduction of next-generation imaging equipment into the marketplace, which, in turn, could adversely impact the future market adoption of certain of our imaging agents already in the market or currently in development. We expect that there will continue to be proposals to reduce or limit Medicare and Medicaid payment for diagnostic services, which could impact our current or potential future diagnostic and other types of products and have a material adverse effect on our business, results of operations, financial condition and cash flows.

Under section 218(b) of the Protecting Access to Medicare Act, beginning January 1, 2020, a professional who is ordering advanced diagnostic imaging services (which include MRI, CT, nuclear medicine (including PET) and other advanced diagnostic imaging services that the Secretary of U.S. Department of Health and Human Services ("HHS") may specify, but not currently including echocardiography) must consult a qualified clinical decision support mechanism, as identified by HHS, to determine whether the ordered service adheres to specified appropriate use criteria ("AUC") developed or endorsed by CMS-qualified "provider led entities". Medicare claims for such services must include information indicating whether services ordered would adhere to specified applicable AUC. Denial of claims for failure to include AUC consultation information on the claim form was set to begin on January 1, 2022, but was not implemented by CMS. In the CY 2024 Physician Fee Schedule Final Rule, CMS determined that it was not feasible to fully operationalize the AUC program consistent with the statute within the required time frame. Accordingly, the agency finalized an indefinite pause to the AUC program and the rescission of the regulations promulgated thus far to implement the AUC program. While it is unclear when CMS will resume implementation of the AUC program, to the extent that these types of changes have the effect of reducing the aggregate number of diagnostic medical imaging procedures performed in the United States, our business, results of operations, financial condition and cash flows could be adversely affected.

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Medicare coverage of PET radiopharmaceuticals has been the subject of a large number of National Coverage Determinations ("NCDs") by CMS since 2000. Specific indications for PET imaging were covered, some through Coverage with Evidence Development. CMS's longtime policy, however, was that a particular use of PET scans is not covered unless an NCD specifically provided that such use was covered. Effective March 7, 2013, CMS revised its policy through an NCD to allow local Medicare Administrative Contractors ("MACs") to determine coverage within their respective jurisdictions for PET using radiopharmaceuticals for their FDA-approved labeled indications for oncologic imaging. Effective January 1, 2022, non-coverage in the absence of an NCD has also been removed for non-oncologic indications of PET radiopharmaceuticals, allowing MACs to determine coverage for these indications within their respective jurisdictions. To the extent that CMS or the MACs impose more restrictive coverage, our business, results of operations, financial condition and cash flows could be adversely affected.

***Reforms to the United States healthcare system, including changes to policies, guidelines and practices of regulatory authorities, may adversely affect our business.***

A significant portion of our patient volume is derived from U.S. government healthcare programs, principally Medicare, which are highly regulated and subject to frequent and substantial changes. The Patient Protection and Affordable Care Act, as amended by the Health Care and Education Reconciliation Act (collectively, the "Healthcare Reform Act") substantially changed the way healthcare is financed by both governmental and private insurers. The law contains a number of provisions that affect coverage and reimbursement of drug products and medical imaging procedures performed in the United States. Subsequently, the Medicare Access and CHIP Reauthorization Act of 2015 significantly revised the methodology for updating the Medicare physician fee schedule. In 2017, Congress enacted legislation that effectively eliminated the Healthcare Reform Act's "individual mandate" beginning in 2019. On July 4, 2025, President Trump signed into law the One Big Beautiful Bill Act (the "OBBBA"), which will reduce existing patient coverage under Medicaid. The expiration of certain subsidies for Marketplace coverage currently in place under the Healthcare Reform Act at the end of 2025 may also cause material coverage losses. The OBBBA further restricts Medicaid financing, which will decrease federal funds available to state Medicaid agencies and may result in reduced state Medicaid agency reimbursement rates. Congress continues to consider other healthcare reform legislation. There is no assurance that the Healthcare Reform Act, as currently enacted or as amended in the future, will not adversely affect our business and financial results, and we cannot predict how future federal or state legislative, judicial or administrative changes relating to healthcare reform will affect our business.

In addition, other legislative changes have been proposed and adopted since the Healthcare Reform Act was enacted. The Budget Control Act of 2011 and subsequent Congressional actions includes provisions to reduce the federal deficit. These provisions have resulted in the imposition of 2% reductions in Medicare payments to providers, which went into effect on April 1, 2013 and will remain in effect through fiscal year 2030. The imposition of the 2% payment adjustment had been suspended through March 31, 2022 and went into effect as of April 1, 2022. The Congressional Budget Office estimates that, absent future action, the OBBBA will lead to $490 billion in Medicare cuts from 2027 to 2034. Any significant spending reductions affecting Medicare, Medicaid or other publicly funded or subsidized health programs that may be implemented and/or any significant taxes or fees that may be imposed on us, as part of any broader deficit reduction effort or legislative replacement to the Budget Control Act, could have an adverse impact on our business, results of operations, financial condition and cash flows.

Further, changes in payor mix and reimbursement by private third-party payors may also affect our business. Rates paid by some private third-party payors are based, in part, on established physician, clinic and hospital charges and are generally higher than Medicare payment rates. Reductions in the amount of reimbursement paid for diagnostic medical imaging procedures, including the elimination of any additional payment such as TPT Status, and changes in the mix of our patients between non-governmental payors and government sponsored healthcare programs and among different types of non-government payor sources, could have a material adverse effect on our business, results of operations, financial condition and cash flows.

The full impact on our business of healthcare reforms and other new laws, or changes in existing laws, the interpretations of those laws, or changes to the way regulations and regulatory guidance has been implemented, amended and interpreted, is uncertain. Nor is it clear whether additional legislative or executive branch changes will be adopted or how those changes would affect our industry in general or our ability to successfully commercialize our products or develop or commercialize new products. For example, recent government actions, including reductions in staff and department reorganizations, including those at the FDA, could adversely affect the timing of anticipated regulatory actions or their outcome, and could change historical practices relating to the application or interpretation of regulations relevant to our operations in ways that could have an adverse effect on our business. It is unclear exactly how changes implemented by the U.S. government will affect the U.S. healthcare system, and what impact this will have on our business. If the reforms made by the OBBBA are implemented and result in predicted coverage losses, these changes could reduce the overall number of diagnostic medical imaging procedures performed, reduce reimbursement rates, or both. Additionally, changes in U.S. drug pricing policies, including initiatives that seek to link domestic prices to those paid in other countries under "most-favored-nation" pricing concepts, could increase pricing pressure on our products. Any such policies, if implemented or expanded, could reduce reimbursement levels, constrain pricing flexibility, and adversely affect our revenues and results of operations.

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***Our business and industry are subject to complex and costly regulations. If government regulations are interpreted or enforced in a manner adverse to us or our business, we may be subject to enforcement actions, penalties, exclusion and other material limitations on our operations.***

Both before and after the approval of our products in development, we, our products, development products, operations, facilities, suppliers, distributors, contract manufacturers, contract research organizations and contract testing laboratories are subject to extensive and, in certain circumstances, expanding regulation by federal, state and local government agencies in the United States., as well as non-U.S. and transnational laws and regulations, with regulations differing from country to country and even state to state, including, among other things, anti-trust and competition laws and regulations, and data privacy laws and regulations such as the General Data Protection Regulation in the European Union and the California Consumer Privacy Act and the California Privacy Rights Act. In the United States, the FDA regulates, among other things, the pre-clinical testing, clinical trials, manufacturing, safety, efficacy, potency, labeling, storage, record keeping, quality systems, advertising, promotion, sale, distribution, and import and export of drug products. We are required to register our business for permits and/or licenses with, and comply with the stringent requirements of the FDA, the Nuclear Regulatory Commission, the HHS, Health Canada, the EMA, the U.K. Medicines and Healthcare Products Regulatory Agency ("MHRA"), the National Medical Products Administration, state and provincial boards of pharmacy, state and provincial health departments and other federal, state and provincial agencies. Violation of any of these regulatory schemes, individually or collectively, could disrupt our business and have a material adverse effect on our business, results of operations, financial condition and cash flows.

Under U.S. law, for example, we are required to report certain adverse events and production problems, if any, to the FDA or other federal or state regulators. We also have similar adverse event and production reporting obligations outside of the United States, including to the EMA and MHRA. Additionally, we must comply with requirements concerning advertising and promotion for our products, including the prohibition on the promotion of our products for indications for which they have not been approved by the FDA or a so-called "off-label use" or promotion that is inconsistent with the approved labeling. If the FDA determines that our promotional materials constitute unlawful promotion, it could request that we modify our promotional materials or subject us to regulatory or enforcement actions. Also, quality control and manufacturing procedures at our own facility and at third-party suppliers must conform to current Good Manufacturing Practices ("cGMP") regulations and other applicable law after approval, and the FDA periodically inspects manufacturing facilities to assess compliance with cGMPs and other applicable law, and, from time to time, makes those cGMPs more stringent. Accordingly, we and others with whom we work must expend time, money, and effort in all areas of regulatory compliance, including manufacturing, production and quality control. If in the future issues arise at our own manufacturing facility or at a third-party manufacturer, the FDA could take regulatory action which could limit or suspend the ability to manufacture our products or have any additional products approved at the relevant facility for manufacture until the issues are resolved and remediated. Such a limitation or suspension could have a material adverse effect on our business, results of operations, financial condition and cash flows.

We are also subject to laws and regulations that govern financial and other arrangements between pharmaceutical manufacturers and healthcare providers, including federal and state anti-kickback statutes, federal and state false claims laws and regulations, federal and state "sunshine" laws and regulations and other fraud and abuse laws and regulations.

We must offer discounted pricing or rebates on purchases of pharmaceutical products under various federal and state healthcare programs, such as the Medicaid drug rebate program, the 340B drug pricing program and the Medicare Part D Program. We must also report specific prices and price-related information to government agencies under healthcare programs, such as the Medicaid drug rebate program and Medicare Part B. Our Medicaid Drug Rebate agreements require us to report certain price information to the federal government. Determination of the rebate amount that we pay to state Medicaid programs for our products, of prices charged to government and certain private payors for our products, or of amounts paid for our products under government healthcare programs, depends upon information reported by us to the government and calculations of discounted pricing or rebates can be impacted in certain cases by the lowest price we offer to customers not participating in such government programs. For example, the calculation of the 340B drug price we can charge for our products is determined on a quarterly basis, based in part on the lowest, or best, price we sold that product to a customer not purchasing under a government program. To the extent we reduce our best price, the 340B drug price will also be reduced. If we provide customers or government officials with inaccurate information about the products' pricing or eligibility for coverage, or the products fail to satisfy coverage requirements, we could be terminated from the rebate program, be excluded from participation in government healthcare programs, or be subject to potential liability under the False Claims Act or other laws and regulations. To the extent more of our customers purchase our products under these various federal or state healthcare programs, this may reduce the net revenue we receive for such product and the gross margin associated with such product.

Failure to comply with other requirements and restrictions placed upon us or our third-party manufacturers or suppliers by laws and regulations can result in fines, civil and criminal penalties, exclusion from federal healthcare programs and debarment. Possible consequences of those actions could include:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Substantial modifications to our business practices and operations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Significantly reduced demand for our products (if products become ineligible for reimbursement under federal and state healthcare programs);

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•A total or partial shutdown of production in one or more of the facilities where our products are produced while the alleged violation is being remediated;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Delays in or the inability to obtain future pre-market clearances or approvals; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Withdrawals or suspensions of our current products from the market.

***Our marketing and sales practices may contain risks that could result in significant liability, require us to change our business practices, and restrict our operations in the future.***

We are subject to numerous domestic (federal, state and local) and foreign laws addressing fraud and abuse in the healthcare industry, including the FCA and federal Anti-Kickback Statute, self-referral laws, the Foreign Corrupt Practices Act ("FCPA"), the U.K. Bribery Act (the "Bribery Act"), FDA promotional restrictions, the federal disclosure (sunshine) law and state marketing and disclosure (sunshine) laws, as well as in other countries where we do business and where our products, including investigational products, may be used.

The FCPA, the Bribery Act and similar worldwide anti-bribery laws in non-U.S. jurisdictions generally prohibit companies and their intermediaries from making improper payments to non-U.S. officials for the purpose of obtaining or retaining business.

The FCPA prohibits us from providing anything of value to foreign officials for the purposes of obtaining or retaining business or securing any improper business advantage. It also requires us to keep books and records that accurately and fairly reflect our transactions. Because of the predominance of government-sponsored healthcare systems around the world, many of our customer relationships outside of the United States are, either directly or indirectly, with governmental entities and are therefore subject to the FCPA and similar anti-bribery laws in non-U.S. jurisdictions. In addition, the provisions of the Bribery Act extend beyond bribery of foreign public officials and are more onerous than the FCPA in a number of other respects, including jurisdiction, non-exemption of facilitation payments and penalties.

Violations of these laws are punishable by criminal or civil sanctions, including substantial fines, imprisonment and exclusion from participation in healthcare programs such as Medicare and Medicaid, as well as health programs outside the United States, and even settlement of alleged violations can result in the imposition of corporate integrity agreements that could subject us to additional compliance and reporting requirements and impact our business practices. These laws and regulations are complex and subject to changing interpretation and application, which could restrict our sales or marketing practices. Even minor and inadvertent irregularities could potentially give rise to a charge that the law has been violated. Our policies mandate compliance with these anti-bribery laws. We operate in many parts of the world that have experienced governmental corruption to some degree, and in certain circumstances compliance with anti-bribery laws may conflict with local customs and practices. Despite our training and compliance programs, our internal control policies and procedures may not always protect us from criminal acts committed by our employees or agents. Additionally, if there is a change in law, regulation or administrative or judicial interpretations, we may have to change one or more of our business practices to be in compliance with these laws. Required changes could be costly and time consuming.

***<u>Risks Related to Our Intellectual Property and Related Legal Proceedings</u>***

***We are involved in various legal proceedings that are uncertain, costly and time-consuming and could have a material adverse impact on our business, financial condition and results of operations.***

From time to time we are involved in legal proceedings and disputes, such as the PNT2003 Litigation (as defined below), and may be involved in litigation in the future. Legal proceedings are complex and extended and occupy the resources of our management and employees. Legal proceedings are also costly to prosecute and defend and may involve substantial awards or damages payable by us if not found in our favor. We may be required to pay substantial amounts or grant certain rights on unfavorable terms in order to settle such proceedings. Defending against or settling legal proceedings and any unfavorable legal decisions, settlements or orders could have a material adverse effect on our business, financial condition and results of operations and could cause the market value of our common stock to decline.

For example, on January 26, 2024, we were sued in the United States District Court for the District of Delaware by Advanced Accelerator Applications USA, Inc. and Advanced Accelerator Applications SA, each a Novartis entity, for patent infringement in response to the filing of our ANDA for PNT2003 and Paragraph IV certification, consistent with the process established by the Hatch-Waxman Act.

Additionally, in 2024 we filed a patent infringement lawsuit against a healthcare-related imaging software developer, and that litigation is ongoing. While we believe it is important to vigorously protect our intellectual property, intellectual property litigation can be costly and time-consuming, and we cannot predict the path that this or any other litigation may take or what the potential outcome may be.

For additional information regarding risk associated with legal proceedings other than those related to intellectual property, See "*Our business and operations could be negatively affected by any pending or future securities litigation.*"

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***We, or our business partners, may be subject to claims that we, or our partners, have infringed, misappropriated or otherwise violated the patent or other intellectual property rights of a third party. The outcome of any of these claims is uncertain and any unfavorable result could adversely affect our business, results of operations, financial condition and cash flows.***

We, or our business partners, may be subject to claims by third parties that we, or our partners, have infringed, misappropriated or otherwise violated third-party intellectual property rights. We are aware of intellectual property rights held by third parties that relate to products or technologies we are developing. For example, we are aware of other groups investigating PSMA or related compounds and monoclonal antibodies directed at PSMA, and PSMA-targeted imaging agents and therapeutics, and of patents held, and patent applications filed, by these groups in those areas. While the validity of these issued patents, the patentability of pending patent applications and the applicability of any of them to our products and programs are uncertain, if asserted against us or our partners, any related patent or other intellectual property rights could adversely affect our ability to commercialize our products.

In particular, the pharmaceutical and medical device industries historically have generated substantial litigation concerning the manufacture, use and sale of products, and we expect this litigation activity to continue. As a result, we may be subject to litigation over infringement claims regarding the products we manufacture or distribute or intend to manufacture or distribute. For example, on January 26, 2024, we were sued in the United States District Court for the District of Delaware by Advanced Accelerator Applications USA, Inc. and Advanced Accelerator Applications SA, each a Novartis entity, for patent infringement in response to the filing of our ANDA for PNT2003 and Paragraph IV certification, consistent with the process established by the Hatch-Waxman Act (the "PNT2003 Litigation"). This type of litigation can be costly and time-consuming and could divert management's attention and resources, generate significant expenses, damage payments (potentially including treble damages) or restrictions or prohibitions on our use of our technology, which could adversely affect our business, results of operations, financial condition and cash flows. In addition, if we or one of our partners are found to be infringing on proprietary rights of others, we may be required to develop non-infringing technology, obtain a license (which may not be available on reasonable terms, or at all), make substantial one-time or ongoing royalty payments, or cease making, using and/or selling the infringing products, any of which could have a material adverse effect on our business, results of operations, financial condition and cash flows.

In addition, in the United States, it has become increasingly common for patent infringement actions to prompt claims that antitrust laws have been violated during the prosecution of the patent or during litigation involving the defense of that patent. Such claims by direct and indirect purchasers and other payors are typically filed as class actions. The relief sought may include treble damages and restitution claims. Similarly, antitrust claims may be brought by government entities or private parties following settlement of patent litigation, alleging that such settlements are anti-competitive and in violation of antitrust laws. In the United States and Europe, regulatory authorities have continued to challenge as anti-competitive so-called "reverse payment" settlements between branded and generic drug manufacturers. We may also be subject to other antitrust litigation involving competition claims unrelated to patent infringement and prosecution. A successful antitrust claim by a private party or government entity against us could have a material adverse effect on our business, financial condition and results of operations and could cause the market value of our common stock to decline.

***If we are unable to protect our intellectual property, our competitors could develop and market products with features similar to our products, and demand for our products may decline.***

Our commercial success will depend in part on obtaining and maintaining patent and trade secret protection of our commercial products and technologies and products in development, as well as successfully enforcing and defending these patents and trade secrets against third parties and their challenges, both in the United States and in foreign countries. We will only be able to protect our intellectual property from unauthorized use by third parties to the extent that we maintain the secrecy of our trade secrets and can enforce our valid patents and trademarks.

The patent positions of pharmaceutical and biotechnology companies can be highly uncertain and involve complex legal and factual questions for which important legal principles remain unresolved. In addition, changes in either the patent laws or in interpretations of patent laws in the United States or other countries may diminish the value of our intellectual property and we may not receive the same degree of protection in every jurisdiction. Accordingly, we cannot predict the breadth of claims that may be allowed or enforced in our patents or in third-party patents.

The degree of future protection for our proprietary rights is uncertain because legal means afford only limited protection and may not adequately protect our rights or permit us to gain or keep our competitive advantage. For example:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•We might not have been the first to make the inventions covered by each of our pending patent applications and issued patents, and we could lose our patent rights as a result;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•We might not have been the first to file patent applications for these inventions or our patent applications may not have been timely filed, and we could lose our patent rights as a result;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Others may independently develop similar or alternative technologies or duplicate any of our technologies;

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•It is possible that none of our pending patent applications will result in any further issued patents;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our issued patents may not provide a basis for commercially viable drugs, may not provide us with any protection from unauthorized use of our intellectual property by third parties, and may not provide us with any competitive advantages;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The validity or enforceability of our patent applications or patents may be subject to challenge through interferences, oppositions, post-grant review, ex-parte re-examinations, inter partes review or similar administrative proceedings;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•While we generally apply for patents in those countries where we intend to make, have made, use or sell patented products, we may not be able to accurately predict all of the countries where patent protection will ultimately be desirable and may be precluded from doing so at a later date;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•We may choose not to seek patent protection in certain countries where the actual cost outweighs the perceived benefit at a certain time;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Patents issued in foreign jurisdictions may have different scopes of coverage than our U.S. patents and so our products may not receive the same degree of protection in foreign countries as they would in the United States;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•We may not develop additional proprietary technologies that are patentable;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The patents of others may have an adverse effect on our business; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The cost to defend our patents may be significant and may result in litigation which could be costly and time consuming.

Moreover, the issuance of a patent is not conclusive as to its validity or enforceability. Third parties have challenged and are likely to continue challenging the validity or enforceability of patents that have been issued to us by the USPTO or the applicable foreign patent office or licensed to us. Our patents may be challenged, invalidated, held to be unenforceable, or circumvented, which could negatively impact their commercial value. Furthermore, patent applications filed outside the United States may be challenged by other parties, for example, by filing third-party observations that argue against patentability or an opposition. Such opposition proceedings are increasingly common in the European Economic Area ("EEA") and are costly to defend.

The initiation, defense and prosecution of intellectual property suits (including Hatch-Waxman related litigation), interferences, oppositions and related legal and administrative proceedings are costly, time consuming to pursue and result in a diversion of resources, including a significant amount of management time. The outcome of these proceedings is uncertain and could significantly harm our business. If we are not able to enforce and defend the patents of our technologies and products, then we will have lost an opportunity that could have permitted us to exclude competitors from marketing products that directly compete with our products, which could have a material and adverse effect on our business, results of operations, financial condition and cash flows.

We also rely on trade secrets and other know-how and proprietary information to protect our technology, especially where we do not believe patent protection is appropriate or obtainable. However, trade secrets are difficult to protect. We use reasonable efforts to protect our trade secrets, but our employees, consultants, contractors, outside scientific partners and other advisors may unintentionally or willfully disclose our confidential information to competitors or other third parties. Enforcing a claim that a third party improperly obtained and is using our trade secrets is expensive, time consuming and resource intensive, and the outcome is unpredictable. In addition, courts outside the United States are sometimes less willing to protect trade secrets. Moreover, our competitors may independently develop equivalent knowledge, methods and know-how. We rely on confidentiality agreements with our collaborators, employees, consultants and other third parties and invention assignment agreements with our employees to protect our trade secrets and other know-how and proprietary information concerning our business. These confidentiality agreements may not prevent unauthorized disclosure of trade secrets and other know-how and proprietary information, and there can be no guarantee that an employee or an outside party will not make an unauthorized disclosure of our trade secrets, other technical know-how or proprietary information, or that we can detect such an unauthorized disclosure. We may not have adequate remedies for any unauthorized disclosure. This might happen intentionally or inadvertently. It is possible that a competitor will make use of that information, and that our competitive position will be compromised, in spite of any legal action we might take against persons making those unauthorized disclosures, which could have a material and adverse effect on our business, results of operations, financial condition and cash flows.

***<u>Risks Related to Our Business Operations and Financial Results</u>***

***We may not be able to hire or retain the number of qualified personnel, particularly scientific, medical and sales personnel, required for our business, which would harm the expansion of our internal research and development ("R&D") capabilities, sales of our products and approval timelines for and commercialization of our product candidates and limit our ability to grow.***

Competition in our industry for highly skilled scientific, healthcare and sales personnel is intense and we may compete with larger pharmaceutical companies that likely will have access to greater financial resources than we do. As we expand our product

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candidate pipeline, including through acquisitions of products and product candidates from other companies, and develop and expand our internal R&D capabilities, we will need to continue to hire additional scientific, medical and regulatory personnel. In addition, as we seek to commercialize additional products, we will need to hire additional employees to assist us with such commercialization, including in sales, marketing, reimbursement, quality and medical affairs. If we are unable to retain our existing personnel, or attract and train additional qualified personnel, either because of competition in our industry for these personnel or due to insufficient financial resources, then timelines for the approval and commercialization of our product candidates could be impacted, our growth could be limited and it could have a material adverse effect on our business.

***Changes to management or other key personnel, including the recent turnover in our leadership and senior management team, could have an adverse effect on our business.***

Our success is substantially dependent upon the performance, contributions and expertise of our executive leadership, senior management team and other key personnel. Our executive leadership, senior management team and other key personnel play a significant role in formulating and executing on our long-term strategy, generating business and overseeing operations. We have experienced, and may continue to experience, significant executive management changes, including the consolidation of roles and responsibilities. Brian Markison, our former Chief Executive Officer ("CEO"), retired from the Company effective December 31, 2025, and Mary Anne Heino, the Chair of our Board of Directors, is serving as our CEO as of January 1, 2026 while the Board of Directors conducts a comprehensive search for our next CEO. Our former President, Paul Blanchfield, accepted a role with another company and left the Company in November 2025. We also have experienced and may continue to experience the departure and transition of other members of the leadership team.

These changes in our management team resulting from the hiring or departure of executives could disrupt our business and involve inherent risk. Any failure to find a timely and suitable replacement and ensure an effective transition within executive leadership, including the effective onboarding, assimilation, and retention of our management team and key employees, could hinder our strategic planning, business execution and future performance. In addition, executive leadership transition periods can be disruptive and may result in a loss of personnel with deep institutional or technical knowledge, or result in changes to business strategy or objectives, and may negatively impact our operations and relationships with employees and third-parties due to increased or unanticipated expenses, operational inefficiencies, uncertainty regarding changes in strategy, decreased employee morale and productivity, and increased turnover.

Further, we have increased our dependency on the remaining members of our executive management team to facilitate a smooth transition in leadership roles. Our executive officers are at-will employees; as such, their employment with us could terminate at any time, and any such departure could be particularly disruptive in light of the recent leadership changes. We also do not maintain key person life insurance policies on any of our executive officers. While we have experienced turnover on our executive leadership team, we have generally been able to fill positions by either promoting existing employees or attracting new, qualified individuals to lead key functional areas. Our inability to retain our existing executive leadership and senior management team, maintain an appropriate internal succession program or attract and retain additional qualified personnel could have a material adverse effect on our business.

***Any constraint on the availability of staff at imaging centers and hospitals and PET scanners could impact our ability to continue to generate substantial revenue from PYLARIFY, grow Neuraceq, and successfully launch and commercialize radiodiagnostic products in our pipeline.***

Use of our radiopharmaceutical diagnostic products is dependent upon the availability of staff at imaging centers and hospitals and PET scanners in the market. Accordingly, our ability to continue to generate substantial revenue from PYLARIFY, grow Neuraceq, and successfully launch new PET diagnostic products, including the new formulation of our PSMA PET imaging agent, MK-6240, LNTH-2501 and NAV-4694, is dependent upon the availability of such staff at imaging centers and hospitals and PET scanners generally and our ability to ensure on time availability of our products to meet user needs. If there are staff shortages among imaging centers or hospitals, or if PET scanner capacity becomes constrained, or we are unable to meet the expectations of these customers, that could have a material adverse effect on our business, results of operations, financial conditions and cash flows.

***Our business depends on our ability to effectively manage existing products, successfully develop and launch new products and indications, generate actionable insights from data, and adapt to rapid technological and medical practice changes.***

The healthcare and diagnostic imaging industries are characterized by rapid and continuous technological change, evolving clinical practices, and shifting customer expectations. Our success depends on our ability to manage and improve our existing products, develop and commercialize new products and new indications, and respond effectively to competitive and technological developments. This requires, among other things, our ability to fund product development and lifecycle management initiatives; anticipate and respond to customer needs and competitive actions; collect, analyze, and derive meaningful insights from available data; obtain timely regulatory approvals; manufacture products efficiently and reliably; protect and leverage our intellectual property; and meaningfully differentiate our products in the marketplace.

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To remain competitive, we must make substantial and ongoing investments in product development, whether through internal research and development efforts or through external licensing arrangements or acquisitions. If we are unable to effectively manage our existing products or successfully introduce new or improved products or indications on a timely basis, our business, results of operations, financial condition, and cash flows could be materially adversely affected.

Even if we successfully develop, manufacture, and obtain regulatory approval for new products or new indications for existing products, commercial success is not assured. Market acceptance of our products depends on numerous factors, including the availability and clinical positioning of competing products, the breadth of indications for which competitors' products are approved, relative pricing, timing of market entry, our ability to enter into favorable commercial agreements, the effectiveness of our sales and distribution efforts, overall market conditions, and our ability to obtain and maintain adequate coding, coverage, and reimbursement, including the availability of TPT Status.

The diagnostic medical imaging market is highly dynamic. New imaging agents, equipment, software, and diagnostic modalities are continually being developed, and existing technologies are frequently refined or displaced. Our diagnostic imaging agents compete not only with other similarly administered agents, but also with agents used in alternative or competing diagnostic modalities. Advances in technology, shifts in clinical preferences, changes in perceptions regarding comparative efficacy, safety, or radiation exposure, or changes in reimbursement methodologies or supplemental payments (including the granting or loss of TPT Status or reimbursement at ASP versus MUC) may favor competing products or modalities and reduce demand for our products. In addition, new or revised appropriate use criteria issued by professional societies may reduce utilization of certain imaging procedures or agents. The development, timing, and adoption of disease-modifying therapeutics that require or are used in connection with diagnostic imaging may also affect demand for our products. If any of our products become technologically obsolete or are displaced by superior alternatives, we may experience reduced sales volumes or pricing pressure. Lower unit volumes could result in higher per-unit overhead costs, which could materially adversely affect our business, results of operations, financial condition, and cash flows.

In addition, reliable, comprehensive, and real-time market data for certain products and indications is limited. As a result, we rely on a combination of historical sales data, information provided by third-party manufacturing and distribution partners, third-party medical claims data, primary market research, and other publicly available information to estimate market size, assess trends, and make strategic decisions. These assessments require assumptions that may be inaccurate, incomplete, or untimely. If our assumptions regarding market size, growth, adoption rates, or competitive dynamics are incorrect, we may make strategic or investment decisions—such as those relating to resource allocation, geographic expansion, or commercialization strategy—that fail to achieve their intended results, which could materially adversely affect our business, results of operations, financial condition, and cash flows.

The successful launch of a new pharmaceutical product is inherently uncertain, requires significant upfront investment and advance planning, and depends on coordinated execution across multiple functions. Product launches require accurate demand forecasting, reliable and timely product supply across complex manufacturing and distribution networks, effective educational and promotional efforts, and the timely achievement of favorable reimbursement and coverage decisions from payors. These activities involve substantial judgment and are subject to factors that are difficult to predict. If we misjudge demand, experience supply chain disruptions, fail to effectively educate healthcare providers, or are unable to secure timely and adequate reimbursement or coverage, a product launch may be delayed, adoption may be limited, or utilization may fall short of expectations. Because product launches involve significant upfront expenditures, delays or execution failures may be costly or difficult to remediate and could materially adversely affect our business, results of operations, financial condition, and cash flows.

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***We may be adversely affected by prevailing economic conditions and financial, business and other factors beyond our control.*** 

Our ability to attract and retain employees and customers, to invest in and grow our business, to maintain our desired levels of costs of goods sold and operating expenses and to meet our financial obligations depends on our operating and financial performance, which, in turn, is subject to numerous factors, including the prevailing economic conditions, changes to financial, business and regulatory expectations, and other factors beyond our control, such as the rate of unemployment, the number of uninsured persons in the United States, inflationary pressures, escalating prices, including those that may occur as a result of tariff policies. We cannot anticipate all the ways in which the current or future economic climate, financial market conditions and government actions could adversely impact our business. We are exposed to risks associated with reduced profitability and the potential financial instability of our customers, many of which may be adversely affected by conditions in the financial markets. For example, unemployment and underemployment, and the resultant loss of insurance, may decrease the demand for healthcare services and pharmaceuticals, including our products. If fewer patients are seeking medical care because they do not have insurance coverage, our customers may experience reductions in revenues, profitability and/or cash flow that could lead them to modify, delay or cancel orders for our products or seek lower cost alternatives to our products where available. If customers are not successful in generating sufficient revenue, are precluded from securing financing from the financial markets, or lose or cannot secure funding from the government, they may not be able to pay, or may delay payment of, accounts receivable that are owed to us. Research programs that could benefit from our investigational or commercial products may slow or be discontinued if funding cannot be secured or is withdrawn, which could delay when the results of such research becomes available and when or how often our products are purchased by third parties for use in their research programs. This, in turn, could adversely affect our business, results of operations, financial condition and cash flows. To the extent prevailing economic conditions result in fewer procedures being performed or fewer research programs being completed, our business, results of operations, financial condition and cash flows could be adversely affected.

In addition, we would expect our costs of goods sold and other operating expenses to change in the future in line with periodic inflationary changes. Because we intend to retain and continue to use our property and equipment, we believe that the incremental inflation related to the replacement costs of those items will not materially affect our operations. However, the rate of inflation affects our expenses, such as those for employee compensation, contract services, and transportation costs, which could increase our level of expenses and the rate at which we use our resources. Similarly, our operations and supply chain may subject us to tariffs and trade policies. For example, the U.S. government has increased, and has indicated a willingness to continue to increase, the use of tariffs by the United States. Such tariffs and any countermeasures taken by other countries could increase the cost of raw materials, components and equipment necessary for our operations, disrupt our global supply chain, create additional operational challenges or adversely impact our customers and business partners. While we generally believe that we will be able to offset the effect of inflationary and other changes by adjusting our product prices and implementing operating efficiencies, any material unfavorable changes in our costs of goods sold or other operating expenses, including from tariffs, could have a material adverse effect on our financial condition, results of operations and cash flows.

***An interruption in our ability to fulfill our obligations as a service provider or supplier to third parties, either through our contract development and manufacturing operations and/or in supplying our commercial or investigational products in support of research programs being conducted by third parties, may adversely affect our reputation and business.***

We have obligations to perform development and manufacturing services for third parties that have contracted with Evergreen for these services. These services are conducted out of a single location. Any disruption in our operations, any failure to timely and cost-effectively secure necessary personnel, components or materials, any failure to comply with the stringent regulations and requirements of the FDA and other regulatory authorities regarding the manufacture and development of radiopharmaceutical products, may cause us to fail to meet our contractual obligations and may adversely affect our business.

We also have contractual commitments to supply our investigational products and certain of our commercial products to third parties as part of their own research programs. Our ability to supply these products may depend upon the ability of PMFs to manufacture the products to meet the requirements of each research program, including that the product be available at the specific time of day required by the third-party's research protocol, which may include locations both within and outside of the United States. We may have limited alternative PMF facilities in certain locations in the event one or more facility is unable to timely manufacture and supply the relevant products, and it may not be possible to timely manufacture the relevant products at required levels or at all, which may cause us to fail to meet our contractual obligations and may adversely affect our business and our reputation. These third-party research programs could be discontinued, which could adversely affect our business, results of operations, financial condition and cash flows.

***Our recent acquisitions, dispositions and other future strategic transactions may disrupt our ongoing business and create distractions for our management. Additionally, the risks related to these transactions, including the risk that we are unable to successfully integrate acquired businesses into our operations, the risk that we are unable to support transitional services associated with dispositions or on the anticipated timeline, or at all, or are unable to realize the anticipated benefits that each transaction is predicted to bring, could adversely affect our business, results of operations, financial condition and cash flows.***

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As a part of our growth strategy, we have made and may continue to make selected acquisitions of complementary businesses, such as our recent acquisitions of Life Molecular in July 2025 and Evergreen in April 2025. In addition, as part of our broader strategy, in May 2025, we announced that we had entered into a definitive agreement to sell our single-photon emission computerized tomography ("SPECT") business to SHINE Technologies, LLC ("SHINE"), and we subsequently completed that disposition on January 1, 2026. These transactions, in addition to advancing our existing pipeline and focusing our operations, create multiple competing interests that are complex and time-consuming, which may distract our management and disrupt our ongoing business.

Our completed and any potential future acquisitions involve numerous risks and operational, financial, and managerial challenges, including the following, any of which could adversely affect our business, results of operations, financial condition and cash flows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Coordinating or consolidating geographically separate organizations and integrating personnel with different business backgrounds and corporate cultures;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Integrating previously autonomous departments, including those in accounting and administrative functions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Integrating financial information and management systems;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The pace of our acquisition activity and the related diversion of already limited resources and management and other personnel time;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Difficulties in integrating new operations, technologies, products, and personnel, including the time it may take to effectively prioritize and communicate decisions across a broader organization and portfolio;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Inconsistencies in standards, controls, procedures, and policies;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Lack of synergies, if synergies are anticipated, or the inability to realize expected synergies and cost-savings;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Underperformance of any acquired technology, product candidate, or business relative to our expectations and the price we paid;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Managing the risks of entering markets or types of businesses in which we have limited or no direct experience;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Exposure to unforeseen liabilities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The potential loss of key employees and strategic partners of acquired companies; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Risks associated with acquiring intellectual property, including potential disputes regarding acquired companies' intellectual property.

In addition, the successful integration of acquired businesses requires significant efforts and expense across all operational areas, including R&D, manufacturing, sales and marketing, finance, legal, and information technologies. There can be no assurance that any of our acquisitions will be successful or will be, or will become or remain, profitable. Our failure to successfully address the foregoing risks may prevent us from achieving the anticipated benefits from any acquisition in a reasonable time frame, or at all.

Further, the disposition of our SPECT business to SHINE included providing certain transition services to SHINE for a period of time following the closing. Such transition services have been and may continue to be time consuming, and may distract personnel providing those services, including our management and disrupt our ongoing business. Additionally, there may be unforeseen expenses related to this divestiture, or we may fail to realize the expected benefits of this transaction, including potential future payments, which could adversely affect on our financial condition, results of operations and cash flows.

***Our future growth may depend on our ability to identify and acquire or in-license additional products, businesses or technologies, and if we do not successfully do so, we may have limited growth opportunities and it could result in significant impairment charges or other adverse financial consequences.***

We seek to acquire or in-license products, businesses or technologies that we believe are a strategic fit with our business strategy. Future acquisitions or in-licenses, however, may entail numerous operational and financial risks, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•A reduction of our current financial resources;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Incurrence of substantial debt or dilutive issuances of securities to pay for acquisitions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Difficulty or inability to secure financing to fund development activities for those acquired or in-licensed technologies;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Higher than expected acquisition, integration or operational costs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Increased amortization expenses;

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Difficulty and cost in combining the operations and personnel of any acquired businesses with our operations and personnel or of retaining key personnel; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Diversion of our management's and other personnel's time and attention to identify, assess and acquire potential additional products, businesses or technologies.

We may not have sufficient resources to identify and execute the acquisition or in-licensing of third-party products, businesses and technologies and integrate them into our current infrastructure. In particular, we may compete with larger pharmaceutical companies and other competitors in our efforts to establish new collaborations and in-licensing opportunities. These competitors likely will have access to greater financial resources than we do and may have greater expertise in identifying and evaluating new opportunities. Furthermore, there may be an overlap between our products or customers and the companies which we acquire that may create conflicts in relationships or other commitments detrimental to the integrated businesses. Additionally, the time between our expenditures to acquire or in-license new products, technologies or businesses and the subsequent generation of revenues from those acquired products, technologies or businesses (or the timing of revenue recognition related to licensing agreements and/or strategic collaborations) could cause fluctuations in our financial performance from period to period. Finally, if we devote resources to potential acquisitions or in-licensing opportunities that are never completed, or if we fail to realize the anticipated benefits of those efforts, we could incur significant impairment charges or other adverse financial consequences.

***Challenges with product quality or product performance, including defects, caused by us or our manufacturers or suppliers could result in a decrease in customers and revenues, unexpected expenses and loss of market share.*** 

The manufacture of our products is highly exacting and complex and must meet stringent quality requirements, due in part to strict regulatory requirements, including the FDA's cGMPs. Problems may be identified or arise during manufacturing, quality review, packaging or shipment for a variety of reasons including equipment malfunction, failure to follow specific protocols and procedures, defective raw materials and environmental factors. Additionally, manufacturing flaws, component failures, design defects, off-label uses or inadequate disclosure of product-related information could result in an unsafe condition or the injury or death of a patient. Those events could lead to a recall of, or issuance of a safety alert relating to, our products or could harm our reputation and our ability to market our products in the future. We also may undertake voluntarily to recall products or temporarily shut down production lines based on internal safety and quality monitoring and testing data.

Quality, regulatory and recall challenges could cause us to incur significant costs, including costs to replace products, lost revenue, damage to customer relationships, time and expense spent investigating the cause and costs of any possible settlements or judgments related thereto and potentially cause similar losses with respect to other products. These challenges could also divert the attention of our management and employees from operational, commercial or other business efforts. If we deliver products with defects, or if there is a perception that our products or the processes related to our products contain errors or defects, we could incur additional recall and product liability costs, and our credibility and the market acceptance and sales of our products could be materially adversely affected. Due to the strong name recognition of our brands, an adverse event involving one of our products could result in reduced market acceptance and demand for all products, and could harm our reputation and our ability to market our products in the future. In some circumstances, adverse events arising from or associated with the design, manufacture or marketing of our products could result in the suspension or delay of regulatory reviews of our applications for new product approvals. These challenges could have a material adverse effect on our business, results of operations, financial condition and cash flows.

***In the ordinary course of business, we may be subject to product liability claims and lawsuits, including potential class actions, alleging that our products have resulted or could result in an unsafe condition or injury.*** 

Any product liability claim brought against us, with or without merit, could be time consuming and costly to defend and could result in an increase of our insurance premiums and cause reputational harm. Although we have not had any such claims to date, claims that could be brought against us might not be covered by our insurance policies. Furthermore, although we currently have product liability insurance coverage with policy limits that we believe are customary for pharmaceutical companies in the diagnostic medical imaging industry and adequate to provide us with insurance coverage for foreseeable risks, even where the claim is covered by our insurance, our insurance coverage might be inadequate and we would have to pay the amount of any settlement or judgment that is in excess of our policy limits. We may not be able to obtain insurance on terms acceptable to us or at all, since insurance varies in cost and can be difficult to obtain. Our failure to maintain adequate insurance coverage or successfully defend against product liability claims could have a material adverse effect on our business, results of operations, financial condition and cash flows.

***We use hazardous materials in our business and must comply with environmental laws and regulations, which can be expensive.***

Our operations use hazardous materials and produce hazardous wastes, including radioactive, chemical and, in certain circumstances, biological materials and wastes. We are subject to a variety of federal, state and local laws and regulations, as well as non-U.S. laws and regulations relating to the transport, use, handling, storage, exposure to and disposal of these materials and wastes. Environmental laws and regulations are complex, change frequently and have generally become more stringent over time.

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We are required to obtain, maintain and renew various environmental permits and nuclear licenses. Although we believe that our safety procedures for transporting, using, handling, storing and disposing of, and limiting exposure to, these materials and wastes comply in all material respects with the standards prescribed by applicable laws and regulations, the risk of accidental contamination or injury cannot be eliminated. We place a high priority on these safety procedures and seek to limit any inherent risks. We generally contract with third parties for the disposal of wastes generated by our operations. We store low level radioactive waste at our facility and dispose of the materials in accordance with applicable laws and regulations. A majority of our low level radioactive waste is held to decay until materials are no longer considered radioactive. Although we believe we have complied in all material respects with all applicable environmental, health and safety laws and regulations, we cannot assure you that we have been or will be in compliance with all such laws at all times. If we violate these laws, we could be fined, criminally charged or otherwise sanctioned by regulators. We may be required to incur further costs to comply with current or future environmental and safety laws and regulations. In addition, in the event of accidental contamination or injury from these materials, we could be held liable for any damages that result and any such liability could exceed our resources.

While we have budgeted for current and future capital and operating expenditures to maintain compliance with these laws and regulations, we cannot assure you that our costs of complying with current or future environmental, health and safety laws and regulations will not exceed our estimates or adversely affect our results of operations and financial condition. Further, we cannot assure you that we will not be subject to additional environmental claims for personal injury, investigation or cleanup in the future based on our past, present or future business activities.

***Our business is subject to international economic, political and other risks that could negatively affect our results of operations or financial position.*** 

For the year ended December 31, 2025, we derived approximately 5.4% of our revenues and sourced approximately 12.0% of our costs of goods sold outside of the United States. Accordingly, our business is subject to risks associated with doing business internationally, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Less stable political and economic environment and changes in a specific country's or region's political or economic conditions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Changes in trade policies, regulatory requirements and other barriers, including, for example, U.S. trade sanctions against Iran and those countries and entities doing business with Iran, which could adversely impact international isotope production and, indirectly, our global supply chain;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Changes to, or the imposition of new tariffs or customs duties;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Potential global disruptions in air transport, which could adversely affect our international supply chains for radioisotopes, as well as international distribution channels for our commercial products;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Entering into, renewing or enforcing commercial agreements with international governments or provincial authorities or entities directly or indirectly owned or controlled by such governments or authorities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•International customers which are agencies or institutions owned or controlled by foreign governments;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Local business practices which may be in conflict with the FCPA and the Bribery Act;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Currency fluctuations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Unfavorable labor regulations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Greater difficulties in relying on non-U.S. courts to enforce either local or U.S. laws, particularly with respect to intellectual property;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Greater potential for intellectual property piracy;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Greater difficulties in managing and staffing non-U.S. operations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The need to ensure compliance with the numerous in-country and international regulatory and legal requirements applicable to our business in each of these jurisdictions and to maintain an effective compliance program to ensure compliance with these requirements, including in connection with the General Data Protection Regulation in the EEA;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Changes in public attitudes about the perceived safety of nuclear facilities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Civil unrest or other catastrophic events; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Longer payment cycles of non-U.S. customers and difficulty collecting receivables in non-U.S. jurisdictions.

These factors are beyond our control. The realization of any of these or other risks associated with operating outside the United States, including the need to import materials from outside the United States to produce our products, could have a material adverse effect on our business, results of operations, financial condition and cash flows.

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***We face currency and other risks associated with international sales.***

We generate revenue from export sales, as well as from operations conducted outside the United States. Operations outside the United States expose us to risks including fluctuations in currency values, trade restrictions, tariff and trade regulations, U.S. export controls, U.S. and non-U.S. tax laws, shipping delays and economic and political instability. For example, violations of U.S. export controls, including those administered by the U.S. Treasury Department's Office of Foreign Assets Control, could result in fines, other civil or criminal penalties and the suspension or loss of export privileges which could have a material adverse effect on our business, results of operations, financial conditions and cash flows.

***Our business depends on the continued effectiveness and availability of our information technology infrastructure, and failures of this infrastructure could harm our operations.*** 

To remain competitive in our industry, we must employ information technologies to collect and analyze data and to support manufacturing processes, quality processes, ordering requirements and preferences, distribution, research and development, regulatory applications, commercialization efforts and strategic planning to capture, manage and analyze large streams of data in compliance with applicable regulatory requirements. While we rely extensively on technology, some of which is managed by third-party service providers, to allow the concurrent conduct of work sharing around the world, all aspects of our business are not automated and we cannot eliminate all potential risks associated with our information technology systems, including those associated with introducing new systems, processes or data. As with all information technology, our equipment and infrastructure age and become subject to increasing maintenance and repair and our systems generally are vulnerable to potential damage or interruptions from fires, natural disasters, power outages, blackouts, machinery breakdown, telecommunications failures and other unexpected events, as well as to break-ins, sabotage, increasingly sophisticated intentional acts of vandalism or cybersecurity threats which, due to the nature of such attacks, may remain undetected for a period of time. In addition, a failure to adopt evolving technologies could introduce risk as legacy systems may be incompatible with newer technologies introduced to our systems or become less effective, inefficient to sustain and potentially obsolete. As these threats continue to evolve, we may be required to expend additional resources to enhance our information security measures or to investigate and remediate any information security vulnerabilities. Given the extensive reliance of our business on technology, including reliance on third-party service providers, any failure to adhere to robust security practice or any substantial disruption or resulting loss of data that is not avoided or either corrected by our backup measures or other means, could result in legal liability, harm our business, reputation, operations and financial condition.

***Our use of artificial intelligence ("AI") or other emerging technologies could adversely affect our business, results of operations, financial condition and cash flows.*** 

We deploy AI and other emerging technologies in various facets of our operations and we continue to explore further use cases for AI. The rapid advancement of these technologies presents opportunities for us in research, manufacturing, commercialization, and other business activities but also entails risks, including that AI-generated content, analyses, or recommendations we utilize could be deficient, or that our competitors may more quickly or effectively adopt AI capabilities. Our use of AI or other emerging technologies could also exacerbate regulatory, cybersecurity and other significant risks, all of which could adversely affect our business, results of operations, financial condition and cash flows.

***A disruption in our computer networks, including those related to cybersecurity, could adversely affect our business, results of operations, financial condition and cash flows.***

We believe that our cybersecurity program is designed to effectively mitigate the risks of material cybersecurity incidents. However, our management does not expect that our cybersecurity program will prevent or detect all occurrences of cybersecurity incidents, material or otherwise, and there is potential risk that certain cybersecurity breaches may go undetected for a period of time. The design of our cybersecurity program is based, in part, upon certain assumptions about the likelihood of future incidents, and there can be no assurance that any design will prevent or detect all cybersecurity breaches. Over time, certain aspects of cybersecurity programs may become inadequate because of changes in technology, sophistication of cybersecurity attacks, emerging threats or other conditions, or the degree of compliance with our policies and procedures may deteriorate.

We rely on our computer networks and systems, some of which are managed by third parties, to manage and store electronic information (including sensitive data such as confidential business information, personally identifiable data and personal health information), and to manage or support a variety of critical business processes and activities. We may face threats to our networks from unauthorized access, security breaches and other system disruptions. Despite our security measures, our infrastructure may be vulnerable to external or internal attacks. Any such security breach may compromise information stored on our networks and may result in significant data losses or theft of sensitive or proprietary information. A cybersecurity breach could hurt our reputation by adversely affecting the perception of customers and potential customers about the security of their orders and personal information, as well as the perception of our manufacturing partners of the security of their proprietary information. In addition, a cybersecurity attack could result in other negative consequences, including disruption of our internal operations, increased cybersecurity protection costs, lost revenue, regulatory actions or litigation. Any disruption of internal operations could adversely affect our business, results of operations, financial condition and cash flows. To date, we have not experienced any known material cybersecurity attacks.

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***We may be limited in our ability to utilize, or may not be able to utilize, net operating loss carryforwards to reduce our future tax liability.*** 

As of December 31, 2025, we had U.S. federal income tax loss carryforwards of $281.4 million, $108.2 million of which will expire between 2029 and 2037, $173.2 million of which can be carried forward indefinitely, foreign net operating losses of $76.3 million, $3.9 million of which expire between 2032 and 2035 and $72.4 million of which can be carried forward indefinitely, and state income tax loss carryforwards of $9.2 million, tax-effected. We may be limited in our ability to use these tax loss carryforwards to reduce our future income tax liabilities if our future income is not sufficient to absorb the losses. Additionally, we may be limited in our ability to use our U.S. federal and state tax loss carryforwards or if we were to experience another "ownership change" as specified in Section 382 of the Internal Revenue Code including if we were to issue a certain amount of equity securities, certain of our stockholders were to sell shares of our common stock, or we were to enter into certain strategic transactions.

***<u>Risks Related to Our and our Strategic Partners' Portfolios of Clinical Development Candidates</u>***

***We may not, or may take longer to, realize the expected benefits and opportunities related to, investments we have made to develop our new formulation of our prostate-specific membrane antigen ("PSMA") PET Imaging Agent.***

In August 2025, we announced that the FDA had accepted our New Drug Application ("NDA") for a new formulation of our F-18 PSMA PET imaging agent, filed by our subsidiary Aphelion, and that the FDA set a Prescription Drug User Fee Act ("PDUFA") target action date of March 6, 2026. The new formulation was designed to enhance product stability and increase batch production, with the potential to enhance supply flexibility and improve operating leverage across the network. If the NDA is approved, we plan to work closely with clinicians and PMF sites to ensure a smooth rollout of the new formulation, including providing clear guidance on ordering, handling, and clinical use to support continuity of care for patients, and we plan to apply for CMS reimbursement for the new formulation, including seeking three years of TPT Status; however, we can provide no assurance that the new formulation will be approved by the FDA, that we will meet our timeline for our planned rollout, or that we will obtain TPT Status. Even if we do receive NDA approval, all of the risks described above with respect to our ability to continue to generate substantial revenue from PYLARIFY, as well as the risk associated with launching a product, would also apply to our new formulation of our PSMA PET imaging agent, and we can provide no assurances that the anticipated increase in batch size or other expected improvements associated with the design of the new formulation will be realized or be viewed in the market as differentiating factors.

***We may not, or may take longer to, realize the expected benefits and opportunities related to our acquisition of the rights to LNTH-2501.***

In April 2025, we acquired Evergreen, including the rights to LNTH-2501. On October 30, 2025, we announced that the FDA had accepted our NDA for LNTH-2501 and has set a PDUFA target action date of March 29, 2026, but we can provide no assurance that LNTH-2501 will be approved by the FDA based on the data submitted or, if approved, that we will be successful in gaining post-approval market acceptance and adequate coding, coverage, and payment for LNTH-2501 or that our manufacturer will be able to successfully develop and scale the manufacturing capabilities to support the launch of LNTH-2501. Even if we do receive NDA approval, all of the risks described above with respect launching a product would apply to LNTH-2501. Additionally, LNTH-2501 is a kit product with a supply chain that differs from that of our other commercial products which may introduce additional operational complexity, coordination requirements, sourcing and supply risks, and we can provide no assurance that we will be able to successfully or timely launch LNTH-2501, achieve anticipated adoption, or realize expected commercial results.

***We may not, or may take longer to, realize the expected benefits and opportunities related to, investments we have made to develop diagnostic product candidates to be used in diagnosing, staging and monitoring Alzheimer's disease.***

As part of our acquisition of Life Molecular, we acquired LNTH-2620, a next-generation radioactive tracer used in PET scans to detect and visualize tau protein tangles in the brain, a key biomarker for Alzheimer's disease and other neurodegenerative disorders. LNTH-2620 is currently in a Phase 3 study.

During 2024, we acquired Meilleur, which holds the rights under a license agreement to develop and commercialize NAV-4694, an investigational late-stage F-18-labeled PET imaging agent that targets beta amyloid in Alzheimer's disease. NAV-4694 is currently in Phase 3 development and is also being used in academic and industry sponsored clinical trials.

Previously, we acquired MK-6240, which is a registrational stage F-18-labeled PET imaging agent that targets tau tangles. In October 2025, we announced that the FDA had accepted our NDA for MK-6240 and has set a PDUFA target action date of August 13, 2026, but we can provide no assurance that MK-6240 will be approved by the FDA based on the data submitted or, if approved, that we will be successful in commercializing MK-6240.

While we believe that both MK-6240 and LNTH-2620, as tau imaging agents, and NAV-4694, as a beta amyloid imaging agent, have the potential to expand our Neurology franchise that also includes Neuraceq and play an important role in diagnosing, staging and monitoring Alzheimer's disease, we can give no assurance that we will be successful with continued development,

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regulatory approval and commercialization of these product candidates or that disagreements with the counterparties to our license agreements or the former stockholders of the companies we acquired who could receive future milestone and royalty-based payments will not arise, including disagreements over proprietary rights, contract interpretation or the preferred course of product research, development or marketing that might cause delays or termination of the license agreements, or might result in litigation or arbitration, which could be time-consuming and expensive. In addition, the successful acceptance and use of these diagnostic product candidates will depend on the successful development by pharmaceutical companies of disease-modifying treatments for Alzheimer's disease, as well as the inclusion of our product candidates in the prescribing information or guidelines for such disease-modifying treatments.

***We may not, or may take longer to, realize the expected benefits and opportunities related to, the POINT Biopharma Global Inc. ("POINT") License Agreements.***

On December 20, 2022, we announced the closing of a set of strategic collaborations with an affiliate of POINT, in which we were granted a license to exclusive worldwide rights (excluding Japan, South Korea, China (including Hong Kong, Macau and Taiwan), Singapore and Indonesia) to co-develop and commercialize POINT's PNT2003 and PNT2002 product candidates (the "POINT License Agreements"). The expected benefits and opportunities related to the POINT License Agreements may not be realized or may take longer to realize than expected due to, for example, challenges and uncertainties inherent in product research, development, manufacturing, regulatory approval, marketing and competition. In particular, activities under the POINT License Agreements may not result in viable products suitable for commercialization in a timely manner or at all, due to a variety of reasons, including any inability of the relevant parties to perform their commitments and obligations under the POINT License Agreements. The POINT License Agreements impose various development, regulatory filing, commercialization and other obligations on us, and require us to meet development timelines or to exercise commercially reasonable efforts to develop and commercialize licensed products. We, along with our counterparty in the POINT License Agreements, may not be able to meet expected or planned regulatory milestones and timelines due to a number of factors, including, with respect to PNT2003, the PNT2003 Litigation, which could postpone FDA approval for up to 30 months or result in us being further delayed in launching PNT2003 or requiring us to seek a license for intellectual property rights. Even if the licensed products are suitable for commercialization in a timely manner, we may not achieve the expected revenues from the sale of such products, and our revenue, ability to achieve profitability and return on investment may be adversely affected. We are also dependent on POINT to develop commercial product capacity and manufacture for both PNT2003 and PNT2002.

Disagreements with POINT in the POINT License Agreements over proprietary rights, contract interpretation or the preferred course of product research, development, regulatory strategy or marketing, might cause delays in performance of the POINT License Agreements or termination of the POINT License Agreements, or might result in litigation or arbitration, which could be time-consuming and expensive.

Additionally, if we fail to comply with our obligations under the POINT License Agreements, then POINT may conclude that we have materially breached and may terminate one or both of the POINT License Agreements, in which event we may lose our rights to develop and market PNT2003 and PNT2002 or incur liability for damages.

The Phase 3 registrational clinical trial for PNT2002, known as the "SPLASH" study, reached 100% of prespecified overall survival events. The results of the readout were comparable to the previously reported 46% and 75% readouts and remain confounded by the overwhelming number of patients who crossed over within the study to receive PNT2002. While we continue to review the available PNT2002 data, we do not currently plan to pursue an NDA or further invest in this asset, as a result, we may never realize future benefits from the related POINT License Agreement.

Any of the foregoing risks could have a material adverse effect on our business, results of operations, financial condition and cash flows.

***The process of developing new drugs and obtaining regulatory approval is complex, time-consuming and costly, and the outcome is not certain.***

We currently have pre-clinical and clinical development programs and are exploring additional lifecycle management opportunities for some of our current products, including PYLARIFY and Neuraceq. To obtain regulatory approval for these products, we may need to conduct extensive human tests, which are referred to as clinical trials, as well as meet other rigorous regulatory requirements, as further described in Part I, Item 1. *"Business—Regulatory Matters"* to this Form 10-K. In connection with our ongoing development activities, we currently depend, and expect to continue to depend, on numerous third parties, including contract research organizations, clinical trial investigators and contract manufacturing organizations. If any of these service providers breach or terminate its agreement with us or otherwise fail to conduct the service for which it is responsible successfully and in a timely and compliant manner, the development or commercialization of the affected product candidate or research program could be delayed or terminated. In addition, oversight of third-party service providers can be costly and time-consuming and could divert management's and other personnel's time and attention,

Satisfaction of all regulatory requirements to successfully obtain regulatory approval for a new product typically takes many years and requires the expenditure of substantial resources. A number of other factors may cause significant delays in the completion of our development programs and clinical trials, including unexpected delays in the initiation of clinical sites, slower

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than projected enrollment, competition with ongoing clinical trials and scheduling conflicts with participating clinicians, regulatory requirements, limits on manufacturing capacity and failure of an investigational product to meet required standards for administration to humans. In addition, it may take longer than we project to achieve study endpoints and complete data analysis for a clinical trial, or we may decide to slow down the enrollment in a trial in order to conserve financial resources or for other reasons.

Our products in development are also subject to the risks of failure inherent in drug development, drug testing and regulatory approval. The results of preliminary studies do not necessarily predict clinical success, and larger and later stage clinical trials may not produce the same results as earlier stage trials. Sometimes, products that have shown promising results in early clinical trials have subsequently suffered significant setbacks in later clinical trials. Products in later stage clinical trials may fail to show desired safety and efficacy traits, despite having progressed through initial clinical testing. In addition, the data collected from clinical trials of our products in development may not be sufficient to support regulatory approval, or regulators could interpret the data differently and less favorably than we do. Further, the design of a clinical trial can determine whether its results will support approval of a product, and flaws in the design of a clinical trial may not become apparent until the clinical trial is well advanced. Clinical trials of potential products often reveal that it is not practical or feasible to continue development efforts. Regulatory authorities may require us or our partners to conduct additional clinical testing, in which case we would have to expend additional time and resources. Depending on the regulatory pathway selected for drug approval, such as by filing an ANDA or Section 505(b)(2) NDA that requires sending notice to the innovator of a drug, regulatory approval may also be delayed by litigation brought under the Hatch-Waxman Act, which is the case for the approval pathway for PNT2003, currently subject to the PNT2003 Litigation. The approval process may also be delayed by changes in government regulation, future legislation or administrative action or changes in regulatory policy that occur prior to or during regulatory review. The failure to provide clinical and preclinical data that are adequate to demonstrate to the satisfaction of the regulatory authorities that our products in development are safe and effective for their proposed use will delay or preclude approval and will prevent us from marketing those products.

We are not permitted to market our products in development in the United States or other countries until we have received requisite regulatory approvals. For example, securing FDA approval for a new drug requires the submission of an NDA to the FDA for our products in development. The NDA must include extensive non-clinical and clinical data and supporting information to establish the product's safety and effectiveness for each indication. The NDA must also include significant information regarding the chemistry, manufacturing and controls for the product. The FDA review process can take many years to complete, and approval is never guaranteed. If a product is approved, the FDA may limit the indications for which the product may be marketed, require extensive warnings on the product labeling, impose restricted distribution programs, require expedited reporting of certain adverse events, or require costly ongoing requirements for post-marketing clinical trials and surveillance or other risk management measures to monitor the safety or efficacy of the product. In some instances, products in development may also be approved by filing an ANDA or Section 505(b)(2) NDA with the FDA (as further described in Part I, Item 1. *"Business—Regulatory Matters—Hatch-Waxman Act"* of this Form 10-K); provided, however, that seeking regulatory approval under such pathways may subject the product candidate to litigation brought by an innovator of similar drugs under the Hatch-Waxman Act, as is the case with the PNT2003 Litigation. Markets outside of the United States also have requirements for approval of products with which we must comply prior to marketing. Obtaining regulatory approval for marketing of a product in one country does not ensure we will be able to obtain regulatory approval in other countries, but a failure or delay in obtaining regulatory approval in one country may have a negative effect on the regulatory process in other countries. Also, any regulatory approval of any of our products in development, once obtained, may be withdrawn. Approvals might not be granted on a timely basis, if at all.

***Even if clinical development candidates receive regulatory approval, we can give no assurance that they can be successfully commercialized.***

Even if we or our partners' clinical development candidates proceed through their clinical trials and ultimately receive regulatory approval, there is no guarantee that an approved product can be manufactured in commercial quantities at a reasonable cost or that such a product will be successfully marketed or distributed. For example, although our licensee, GE Healthcare, has received FDA approval of Flyrcado (flurpiridaz F-18) for coronary artery disease diagnosis, there is no guarantee that GE Healthcare will continue to be successful in its commercialization of Flyrcado, which may delay or prevent us from being able to generate additional future royalty revenue from product sales. Additionally, the manufacturing, marketing and distribution of an F-18-based radiopharmaceuticals like Flyrcado, as well as our investigational products, such as MK-6240, NAV-4694 and LNTH-2620, will require the further leveraging of a field-based network of specialized PMFs, with radioisotope-producing cyclotrons, which we use for PYLARIFY and Neuraceq, and will need to be manufactured and distributed rapidly to end-users. We can give no assurance that additional PMF sites will have the capacity to produce products in addition to the products they may already produce, including other F-18-based products, that those PMF sites will be willing to commit to manufacture new products or that they can successfully complete the technology transfer process necessary to manufacture new products and to obtain necessary regulatory approvals.

In addition, obtaining adequate coding, coverage, and payment at appropriate payment levels for any clinical development candidate will be critical, including not only coverage from Medicare, Medicaid, and other government payors, but also from private payors. We can give no assurance, even if a clinical development candidate were to obtain regulatory approval, that adequate coding, coverage and payment could be secured to allow the approved products to become successfully commercialized.

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Further, our ability to accurately forecast demand to support the launch of new products, including variations in demand across geographic regions, is limited, and errors in forecasting could adversely affect our business, results of operations, financial condition and cash flows. Demand for our products may differ materially from our current expectations due to factors that are difficult to predict, including customer adoption rates, purchasing patterns, competitive offerings, pricing dynamics, reimbursement or regulatory considerations, and broader market conditions. The commercialization of our products relies on production across multiple manufacturing sites located in different regions of the United States. To meet anticipated customer demand, we must maintain appropriate levels of raw materials and manufacturing capacity at each of these sites. Accurately aligning regional demand forecasts with inventory levels across multiple locations requires complex planning and coordination, and any errors in forecasting or execution could result in excess or insufficient inventory at one or more sites. If we overestimate demand in a particular region, we may incur increased carrying costs, write-downs or obsolescence of raw materials or finished goods, and inefficiencies in our manufacturing operations. Conversely, if we underestimate demand, we may experience supply shortages, production delays, missed sales opportunities, strained customer relationships, or damage to our reputation. In addition, shifting inventory or production capacity between sites may not be feasible on a timely or cost-effective basis. Any of these outcomes could increase our costs, reduce our margins, delay or limit the successful adoption of the product, and materially and adversely affect our business, results of operations, and financial condition.

In addition, the successful acceptance and use of our diagnostic product candidates may depend in part on the successful development by pharmaceutical companies of disease-modifying treatments for the disease areas in which our product candidates are intended to be used, as well as the inclusion of our product candidates in the prescribing information or guidelines for such disease-modifying treatments.

***We have been and expect to continue to be dependent on partners for the development of certain product candidates, which expose us to the risk of reliance on these partners.***

In connection with our ongoing development activities, we currently depend, and expect to continue to depend, on numerous collaborators. For example, in addition to our collaboration with Curium on PYLCLARI in Europe, GE Healthcare on Flyrcado in the United States and piflufolastat in Japan and POINT on PNT2003, we have other collaborations to develop and commercialize products. In addition, certain clinical trials for our product candidates may be conducted by government-sponsored agencies, and consequently will be dependent on governmental participation and funding. These arrangements expose us to the same considerations we face when contracting with third parties for our own trials.

If any of our collaborators breach or terminate its agreement with us or otherwise fail to conduct successfully and in a timely manner the collaborative activities for which they are responsible, the preclinical or clinical development or commercialization of the affected product candidate or research program could be delayed or terminated. We generally do not control the amount and timing of resources that our collaborators devote to our programs or product candidates. We also do not know whether current or future collaboration partners, if any, might pursue alternative technologies or develop alternative products either on their own or in collaboration with others, including our competitors, as a means for developing treatments for the diseases or conditions targeted by our collaborative arrangements. Our collaborators are also subject to similar development, regulatory, manufacturing, cyber-security and competitive risks as us, which may further impede their ability to successfully perform the collaborative activities for which they are responsible. Setbacks of these types to our collaborators could have a material adverse effect on our business, results of operations, financial condition and cash flows.

***We depend on licenses from third parties for our rights to existing commercial products and to develop and commercialize certain product candidates. If we fail to achieve milestone requirements or to satisfy other conditions or otherwise have disagreements with those third parties, we may lose those rights under those license agreements, and our business, results of operations and financial condition could be adversely affected.*** 

Many of our products or product candidates incorporate rights licensed by third parties, including, but not limited to patent rights on PYLARIFY, Neuraceq, PNT2003, MK-6240 and NAV-4694. Disagreements with licensors over proprietary rights, contract interpretation or the preferred course of product research, development, regulatory strategy or marketing, might cause delays in performance under the applicable license agreements or termination of the license agreement, or might result in litigation or arbitration, which could be time-consuming and expensive. In addition, we are required to make substantial cash payments, achieve milestones and satisfy other conditions, including filing for and obtaining marketing approvals and introducing products, sometimes in accordance with established timelines, to maintain rights under our license agreements. Due to the nature of these agreements and the uncertainties of development, we may not be able to achieve milestones or satisfy conditions to which we have contractually committed, and as a result may be unable to maintain our rights under these licenses. If we do not comply with our license agreements, the licensors may seek to terminate them, which could result in our losing our rights to, and therefore being unable to commercialize, related products. This loss or any sustained disagreement with a licensor could have a material adverse effect on our business, results of operations, financial condition and cash flows.

***<u>Risks Related to Our Capital Structure</u>***

***Repurchases by us of our common stock may affect the value of our common stock and reduces cash available for other purposes.***

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We have from time to time engaged in repurchase programs of our common stock. In July 2025, our Board of Directors authorized a program to repurchase up to $400.0 million of shares of our common stock through December 31, 2027, via open market purchases, privately negotiated transactions, block trades or pursuant to trades intending to comply with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or through other legally permissible means, depending on market conditions and in accordance with applicable rules and regulations (the "2025 Program"). As of December 31, 2025, we had repurchased a total of approximately 3.5 million shares under the 2025 Program for approximately $200.0 million, and approximately $200.0 million of shares of our common stock remain available for repurchase under the 2025 Program. Such repurchases could increase, or prevent a decrease in, the market price of our common stock, although there can be no assurance that an increase, or prevention of a decrease, would occur, and stockholders could prefer that we allocate our capital in a different manner, which could negatively impact the market price of our common stock.

***The conditional conversion feature of the 2.625% Convertible Senior Notes due December 2027, if triggered, may adversely affect our financial condition and operating results.***

On December 8, 2022, we issued $575.0 million in aggregate principal amount of 2.625% Convertible Senior Notes due December 2027 (the "Notes"), which included $75.0 million in aggregate principal amount of Notes sold pursuant to the full exercise of the initial purchasers' option to purchase additional Notes. The Notes were issued under an indenture, dated as of December 8, 2022 (the "Indenture"), among Lantheus Holdings, Lantheus Medical, and U.S. Bank Trust Company, National Association, as Trustee. Prior to the close of business on the business day immediately preceding September 15, 2027, the Notes may be converted at the option of the holders upon occurrence of specified events and during certain periods, and thereafter until the close of business on the business day immediately preceding the maturity date, the Notes may be converted at any time. For example, holders could elect to convert their Notes during a calendar quarter if the trading price of our common stock was greater than or equal to 130% of the conversion price of the Notes (initially $79.81 per share) for at least 20 trading days (whether or not consecutive) during the period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding calendar quarter (the "Stock Price Conversion Threshold"). During the third quarter of 2024, the closing price of the Company's common stock exceeded the Stock Price Conversion Threshold, so the Notes were convertible at the option of the holders during the fourth quarter of 2024, and, in connection therewith, holders of $4,000 in aggregate principal of Notes elected to convert their Notes, for which we elected to pay cash in consideration of our conversion obligation in excess of the aggregate principal amount of the converted Notes. Since the third quarter of 2024, the closing price of the Company's common stock has not exceeded the Stock Price Conversion Threshold, so the Notes have not been convertible at the option of the holders of the Notes subsequent to the fourth quarter of 2024. However, if such a right becomes available again and if one or more holders elect to convert their Notes, unless we elect to satisfy our conversion obligation by arranging for one or more financial institutions to take the Notes from converting holders and pay such holders in accordance with the Indenture, we would be required to settle any converted principal amount of such Notes through the payment of cash and by paying or delivering, at our election, cash, shares of our common stock, or a combination of cash and shares, with respect to the remainder of our conversion obligation in excess of the aggregate principal amount of the Notes being converted, which could adversely affect our liquidity or, if we elect to settle our conversion obligation in excess of the aggregate principal amount of the Notes being converted in shares of common stock (whether in whole or in part), could dilute the ownership interests of our existing common stockholders.

***The issuance or sale of shares of our common stock, or rights to acquire shares of our common stock, could depress the trading price of our common stock.***

We may conduct future offerings of our common stock, preferred stock or other securities that are convertible into or exercisable for our common stock to finance our operations or fund acquisitions, or for other purposes. In addition, we expect to continue to grant equity awards to directors, officers and employees under our equity incentive plans. If we issue additional shares of our common stock or rights to acquire shares of our common stock, if any of our existing stockholders sells a substantial amount of our common stock, or if the market perceives that such issuances or sales may occur, then the trading price of our common stock may significantly decrease. In addition, our issuance of additional shares of common stock will dilute the ownership interests of our existing common stockholders.

***We have indebtedness that may limit our financial and operating activities and may adversely affect our ability to incur additional debt to fund future needs.***

As of December 31, 2025, we had approximately $575.0 million of total principal indebtedness remaining under the Notes and availability of $750.0 million under our five-year revolving credit facility, which was amended in December 2024 (as amended, the "2022 Revolving Facility"). The amendment extended the maturity date of the 2022 Revolving Facility to December 19, 2029 and increased the amount available under the 2022 Revolving Facility from $350.0 million to $750.0 million. Our indebtedness and any future indebtedness we incur could:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Require us to dedicate a substantial portion of cash flow from operations to the payment of interest on and principal of our indebtedness, thereby reducing the funds available for other purposes, including for working capital, capital expenditures and acquisitions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Make it more difficult for us to satisfy and comply with our obligations with respect to our outstanding indebtedness, namely the payment of interest and principal;

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Make it more difficult to refinance the outstanding indebtedness;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Subject us to increased sensitivity to interest rate increases;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Make us more vulnerable to economic downturns, adverse industry or company conditions or catastrophic external events;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Limit our ability to withstand competitive pressures;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Reduce our flexibility in planning for or responding to changing business, industry and economic conditions; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Place us at a competitive disadvantage to competitors that have relatively less debt than we have.

In addition, our level of indebtedness could limit our ability to obtain additional financing on acceptable terms, or at all, for working capital, capital expenditures and general corporate purposes. Our liquidity needs could vary significantly and may be affected by general economic conditions, industry trends, performance and many other factors outside our control.

***We may not be able to generate sufficient cash flow to meet our debt service obligations.***

Our ability to generate sufficient cash flow from operations to make scheduled payments on our debt obligations will depend on our future financial performance, which will be affected by a range of economic, competitive and business factors, many of which are outside of our control. If we do not generate sufficient cash flow from operations to satisfy our debt obligations, including interest and principal payments, our credit ratings could be downgraded, and we may have to undertake alternative financing plans, such as refinancing or restructuring our debt, selling assets, entering into additional corporate collaborations or licensing arrangements for one or more of our products in development, reducing or delaying capital investments or seeking to raise additional capital. We cannot assure you that any refinancing would be possible, that any assets could be sold, licensed or partnered, or, if sold, licensed or partnered, of the timing of the transactions and the amount of proceeds realized from those transactions, that additional financing could be obtained on acceptable terms, if at all, or that additional financing would be permitted under the terms of our various debt instruments then in effect. Furthermore, our ability to refinance would depend upon the condition of the financial and credit markets. Our inability to generate sufficient cash flow to satisfy our debt obligations, or to refinance our obligations on commercially reasonable terms or on a timely basis, would have an adverse effect on our business, results of operations and financial condition.

***Despite our indebtedness, we may incur more debt, which could exacerbate the risks described above.***

We and our subsidiaries may be able to incur substantial additional indebtedness in the future subject to the limitations contained in the agreements governing our debt, including the 2022 Revolving Facility. Although these agreements restrict us and our restricted subsidiaries from incurring additional indebtedness, these restrictions are subject to important exceptions and qualifications. For example, we are generally permitted to incur certain indebtedness, including indebtedness arising in the ordinary course of business, indebtedness among restricted subsidiaries and us and indebtedness relating to hedging obligations. If we or our subsidiaries incur additional debt, the risks that we and they now face as a result of our leverage could intensify. In addition, the 2022 Revolving Facility will not prevent us from incurring obligations that do not constitute indebtedness under that agreement.

***Our 2022 Revolving Facility contains restrictions that will limit our flexibility in operating our business.***

Our 2022 Revolving Facility contains various covenants that limit our ability to engage in specified types of transactions. These covenants limit our and our restricted subsidiaries' ability to, among other things:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Maintain net leverage above certain specified levels;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Maintain interest coverage below certain specified levels;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Incur additional debt;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Pay dividends or make other distributions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Redeem stock;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Issue stock of subsidiaries;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Make certain investments;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Create liens;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Enter into transactions with affiliates; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Merge, consolidate or transfer all or substantially all of our assets.

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A breach of any of these covenants could result in a default under the 2022 Revolving Facility. We may also be unable to take advantage of business opportunities that arise because of the limitations imposed on us by the restrictive covenants under our indebtedness.

***U.S. credit markets may impact our ability to obtain financing or increase the cost of future financing, including interest rate fluctuations based on macroeconomic conditions that are beyond our control.***

During periods of volatility and disruption in the United States, European, or global credit markets, obtaining additional or replacement financing may be more difficult and the cost of issuing new debt or replacing or repaying our 2022 Revolving Facility could be higher than under our current 2022 Revolving Facility. Higher cost of new debt may limit our ability to have cash on hand for working capital, capital expenditures and acquisitions on terms that are acceptable to us. Additionally, our 2022 Revolving Facility has variable interest rates. By its nature, a variable interest rate will move up or down based on changes in the economy and other factors, all of which are beyond our control. If interest rates increase, our interest expense could increase, affecting earnings and reducing cash flows available for working capital, capital expenditures and acquisitions.

***Our stock price has fluctuated significantly, which could cause the value of your investment in our common stock to decline, and you may not be able to resell your shares at or above your purchase price.***

Securities markets worldwide have experienced, and may continue to experience, significant price and volume fluctuations. This market volatility, as well as general economic, market or political conditions, could reduce the market price of our common stock regardless of our operating performance. The high and low closing sales prices of our common stock during the twelve months ended December 31, 2025 were $110.01 and $50.11, respectively. The trading price of our common stock is likely to be volatile and subject to wide price fluctuations in response to various factors, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Market conditions in the broader stock market;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Actual or anticipated fluctuations in our quarterly financial and operating results;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Issuance of new or changed securities analysts' reports or recommendations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Investor perceptions of us and the pharmaceutical and medical device industries;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Sales, or anticipated sales, of large blocks of our stock;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Acquisitions or introductions of new products or services by us or our competitors;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Positive or negative results from our clinical development programs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Additions or departures of key personnel;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Regulatory or political developments;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Loss of intellectual property protections;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Litigation and governmental investigations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Geopolitical events; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Changing economic conditions.

These and other factors may cause the market price and demand for our common stock to fluctuate substantially, which may limit or prevent investors from readily selling their shares of common stock and may otherwise negatively affect the liquidity of our common stock. In addition, when the market price of a stock is volatile, holders of that stock may institute securities class action litigation against the company that issued the stock, including, as discussed in the risk factor entitled *"Our business and operations could be negatively affected by any pending or future securities litigation"*.

***Our business and operations could be negatively affected by any pending or future securities litigation or claims that we have otherwise engaged in wrongdoing.***

We are, and may become in the future, subject to securities class actions, derivative suits or other securities-related legal actions. For example, on September 9, 2025, an alleged stockholder initiated a putative securities class action against us in the United States District Court for the Southern District of New York, styled *Margolis v. Lantheus Holdings, Inc., et al.* The operative complaint also asserts claims against certain of our named executives*.* A related action, styled *Indiana Pub. Ret. Sys. v. Lantheus Holdings, Inc., et al*., was filed in the same court on November 5, 2025. Those actions are now consolidated into a single putative securities class action (captioned *In re Lantheus Holdings, Inc. Secs. Litig.*), the theory of which is that the defendants made materially false or misleading statements (or omitted material facts) in violation of the Exchange Act. Under the operative scheduling order in the case, the lead plaintiff may file an amended complaint by March 13, 2026. Additionally, on December 17, 2025, another alleged stockholder filed a shareholder derivative action in the same court, styled *Lelchuk v. Heino et al.*, nominally on behalf of the Company and naming as defendants the current directors of our Board and the same officers named in the consolidated securities class action described above (a similar derivative complaint styled *Jones v. Markison et al.*,

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was previously filed on October 31, 2025 but was voluntarily withdrawn without prejudice). The derivative complaint largely repeats the allegations asserted in the consolidated securities class action, and asserts claims for alleged breaches of fiduciary duties, aiding and abetting breach of fiduciary duty, unjust enrichment, waste of corporate assets, and violations of the Exchange Act. The plaintiff seeks damages and other relief on behalf of the Company. Because the outcome of litigation is uncertain, we cannot predict how or when these matters will ultimately be resolved. These actions, or any other stockholder litigation against us, could cause us to incur substantial costs defending the lawsuit. Such a lawsuit could also divert the time and attention of our management from our business, which could significantly harm our profitability and reputation.

***If securities or industry analysts do not publish research or reports about our business, if they adversely change their recommendations regarding our stock, or if our results of operations do not meet their expectations, our stock price and trading volume could decline.***

The trading market for our common stock will be influenced by the research and reports that industry or securities analysts publish about us or our business. If one or more of these analysts ceases coverage of our company or fails to publish reports on us regularly, we could lose visibility in the financial markets, which in turn could cause our stock price or trading volume to decline. Moreover, if one or more of the analysts who cover us downgrades our stock, or if our results of operations do not meet their expectations, our stock price could also decline.

***We do not anticipate paying any cash dividends for the foreseeable future, and accordingly, stockholders must rely on stock appreciation for any return on their investment.***

We have never declared or paid cash dividends on our capital stock. We currently intend to retain our future earnings, if any, for the foreseeable future, to repay indebtedness and to fund the development and growth of our business. We do not intend to pay any dividends to holders of our common stock and the agreements governing our senior secured credit facilities limit our ability to pay dividends. As a result, capital appreciation in the price of our common stock, if any, will be your only source of gain on an investment in our common stock.

***Anti-takeover provisions in our charter documents and Delaware law and certain provisions in the Notes and Indenture may make an acquisition of us more difficult.*** 

Our amended and restated certificate of incorporation and bylaws, as amended and restated, contain provisions that delay, defer or discourage transactions involving an actual or potential change in control of us or change in our management. These provisions may also discourage bids for our common stock at a premium over market price or adversely affect the market price of, and the voting and other rights of the holders of, our common stock. These provisions could also discourage proxy contests and make it more difficult for stockholders to elect directors other than the candidates nominated by our Board. In addition, we are incorporated in Delaware and subject to the provisions of Section 203 of the Delaware General Corporation Law, which may prohibit large stockholders from consummating a merger with, or acquisition of, us. These provisions may deter an acquisition of us that might otherwise be attractive to stockholders.

Certain provisions in the Notes and the Indenture could make it more difficult or more expensive for a third party to acquire us. For example, if a takeover would constitute a fundamental change, holders of the Notes will have the right to require us to repurchase their Notes in cash. In addition, if a takeover constitutes a make-whole fundamental change, we may be required to increase the conversion rate for holders who convert their Notes in connection with such takeover. In either case, and in other cases, our obligations under the Notes and the Indenture could increase the cost of acquiring us or otherwise discourage a third party from acquiring us or removing incumbent management, including in a transaction that holders of our common stock may view as favorable.

**Item 1B. Unresolved Staff Comments**

None.

**Item 1C. Cybersecurity**

**Risk management and strategy**

With respect to cybersecurity risks, we have invested and continually invest in cybersecurity services, technologies, and capabilities. On an ongoing basis we provide our employees with comprehensive cybersecurity awareness training around phishing, malware and other cybersecurity risks, all in a manner reasonably intended to educate employees to safely avoid cyber attacks and mitigate the risk of employee related security breaches. In support of our cybersecurity program, our systems and services undergo regular reviews by management to determine if any insufficiencies in cybersecurity exist.

If an incident is detected, our cybersecurity team follows the incident response policy to investigate, review and determine the potential impacts of such an incident. If the cybersecurity team determines that an incident could reasonably be expected to have an impact on the financial condition, operations or reputation of the Company, it escalates the incident to the crisis management team, which includes executive management. The crisis management team further evaluates the potential impact and

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materiality of an event and the appropriate response required. The crisis management team coordinates the appropriate response effort and communicates, as applicable, to the Audit Committee. To the extent that cybersecurity incident is determined to be material or otherwise reportable under applicable law, the appropriate disclosures are made.

We monitor material risks from cybersecurity threats relating to potential compromises of sensitive information at our third-party business partners where relevant and reevaluate these risks periodically. We also conduct third-party security reviews and testing of our network, processes and systems periodically.

**Impact of cybersecurity risks on business strategy, results of operations or financial condition**

We rely on our computer networks and systems, some of which are managed by third-parties, to manage and store electronic information (including sensitive data such as confidential business information, personally identifiable data and personal health information), and to manage or support a variety of critical business processes and activities. We may face threats to our networks from unauthorized access, security breaches and other system disruptions. Despite our preventative actions or security measures, our infrastructure may be vulnerable to external or internal attacks or failures. Any such security breach may compromise information stored on our networks and may result in significant data losses or theft of sensitive or proprietary information. A cybersecurity breach could hurt our reputation by adversely affecting the perception of customers and potential customers about the security of their orders and personal information, as well as the perception of our manufacturing partners of the security of their proprietary information. In addition, a cybersecurity attack could result in other negative consequences, including disruption of our internal operations, increased cybersecurity protection costs, lost revenue, regulatory actions or litigation. Any disruption of internal operations could also have a material adverse impact on our results of operations, financial condition and cash flows.

As of the date of this report, we have not experienced any known cybersecurity incidents, or a series of related incidents, that have materially affected or are reasonably likely to affect us, including our business strategy, results of operations or financial condition. For an additional description of these cybersecurity risks and potential related impacts on us, see *"Risk Factors"* in Part I, Item 1A of this Form 10-K.

**Governance**

Our Board actively oversees our corporate strategy and enterprise risk management ("ERM") programs, including those relating to cybersecurity and data privacy risks.

Our Audit Committee and Nominating and Corporate Governance Committee are primarily responsible for, among other things, overseeing our compliance and ERM programs, information technology systems, and our processes and data, including cybersecurity and data privacy. These responsibilities include reviewing and discussing with management our policies and processes relating to risk assessment and risk management. Cybersecurity and data privacy are regular topics on the Audit Committee's agenda and management reviews at least quarterly the results of cybersecurity monitoring and discusses performance metrics, any cybersecurity incidents identified and potential recommended modifications to our technology, organization training, awareness and governance with our Audit Committee. A summary of these results are also reported by the Audit Committee to the Board at least annually.

Management, including our Chief Information Officer, who has over 30 years of experience serving primarily in the life science industry and is a recognized industry leader, and our Chief Information Security Officer, who has nearly 30 years of cybersecurity experience across multiple industries, and is responsible for monitoring and assessing cybersecurity risks. Management reviews and determines the effectiveness of both internal and third-party leveraged expertise to ensure we have the appropriate knowledge base for risk coverage.

**Item 2. Properties**

The following table summarizes information regarding our significant leased and owned properties, as of December 31, 2025:

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| | | | | |
|:---|:---|:---|:---|:---|
| **Location** | **Purpose** | **Square Footage** | **Ownership** | **Lease Term End** |
| **United States** |  |  |  |  |
| North Billerica, Massachusetts | Manufacturing, Laboratory, Mixed Use and Other Office Space | 354000 | Owned <sup>(1)</sup> | N/A |
| Bedford, Massachusetts | Executive Offices, Laboratory, Office Space | 88181 | Leased | February 2040 |
| Bedford, Massachusetts | Office Space | 41229 | Leased | July 2028 |
| New York, New York | Office Space | 26558 | Leased <sup>(2)</sup> | September 2030 |
| Springfield, New Jersey | Manufacturing | 13079 | Owned | N/A |
| **Germany** |  |  |  |  |
| Berlin | Office Space | 11657 | Leased | December 2031 |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)On January 1, 2026, we sold our single-photon emission computerized tomography ("SPECT") business to SHINE Technologies, LLC. ("SHINE"). As a result of the sale, SHINE received 292,215 square feet of the North Billerica, Massachusetts campus that manufactures the SPECT products.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)On October 11, 2021, we entered into an agreement to sublease our office space at the World Trade Center in New York City to an unrelated third party.

We believe all of these facilities are well-maintained and suitable for the office, manufacturing or warehouse operations conducted in them and provide adequate capacity for current and foreseeable future needs.

**Item 3. Legal Proceedings**

Information with respect to certain legal proceedings is included in Note 17, *"Commitments and Contingencies,"* to the consolidated financial statements contained in Part II, Item 8. *"Financial Statements and Supplementary Data,"* of this Form 10-K and is incorporated herein by reference.

**Item 4. Mine Safety Disclosures**

Not applicable

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**PART II**

**Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities** 

**Market Information**

Our common stock trades on the NASDAQ Global Market under the symbol "LNTH".

**Holders of Record**

On February 23, 2026, there were approximately 28 stockholders of record of our common stock. This number does not include stockholders for whom shares are held in "nominee" or "street" name.

**Performance Graph**

*The performance graph set forth below shall not be deemed "soliciting material" or to be "filed" with the Securities and Exchange Commission. This graph will not be deemed "incorporated by reference" into any filing under the Securities Act of 1933, as amended or the Securities Exchange Act of 1934, as amended, whether such filing occurs before or after the date hereof, except to the extent that we explicitly incorporate it by reference into in such filing.*

The following graph provides a comparison of the cumulative total shareholder return on our shares of common stock with that of the cumulative total shareholder return on the (i) Russell 2000 Index, (ii) the NASDAQ US Small Cap Index and (iii) the NASDAQ US Mid Cap Index, commencing on December 31, 2020 and ending December 31, 2025. The graph assumes a hypothetical $100 investment in our common stock and in each of the comparative indices on December 31, 2020. Our historic share price performance is not necessarily indicative of future share price performance.

![img266167210_0.jpg](img266167210_0.jpg)

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*\* Assumes hypothetical investment of $100 in our common stock and each of the indices on December 31, 2020, including reinvestment of dividends.*

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**Performance Graph Data**

The following table sets forth the cumulative total shareholder return on the hypothetical $100 investment in our common stock and each of the comparative indices on December 31, 2020:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | **Lantheus** |  | **NASDAQ US** | **NASDAQ US** |
|  | **Holdings,** | **Russell 2000** | **Small Cap Index** | **Mid Cap Index** |
| **Date** | **Inc. ("LNTH")** | **Index ("^RUT")** | **Index ("^NQUSS")** | **("^NQUSM")** |
| 12/31/2020 | $100.00 | $100.00 | $100.00 | $100.00 |
| 12/31/2021 | $214.16 | $113.69 | $116.10 | $118.09 |
| 12/31/2022 | $377.76 | $89.18 | $90.44 | $96.28 |
| 12/31/2023 | $459.60 | $102.64 | $104.83 | $112.20 |
| 12/31/2024 | $663.16 | $112.93 | $116.17 | $128.62 |
| 12/31/2025 | $493.33 | $125.68 | $127.83 | $137.80 |

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**Dividend Policy**

We did not declare or pay any dividends in 2025, and we do not currently intend to pay dividends in the foreseeable future. We currently expect to retain future earnings, if any, for the foreseeable future, to finance the growth and development of our business and to repay indebtedness. Our ability to pay dividends is restricted by our financing arrangements. See Part II, Item 7. *"Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—External Sources of Liquidity"* of this Form 10-K for further information.

**Recent Sales of Unregistered Securities**

None.

**Issuer Purchases of Equity Securities**

On July 31, 2025, our Board of Directors (the "Board") authorized a program to repurchase up to $400.0 million of shares of our common stock through December 31, 2027 (the "2025 Program"). The 2025 Program replaced the program authorized by the Board in November 2024 for $250.0 million (the "2024 Program"), including the remaining unused amounts under the 2024 Program. The 2025 Program authorizes us to purchase shares of our common stock from time to time via open market purchases at prevailing market prices, in privately negotiated transactions, block trades, or pursuant to trades intending to comply with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended, or through other legally permissible means, depending on market conditions and in accordance with applicable rules and regulations. The 2025 Program does not obligate us to acquire any particular amount of our common stock, and we may suspend or discontinue the 2025 Program at any time. The actual timing, manner, number and dollar amount of repurchase transactions will be determined by our management, in its discretion and will depend on a number of factors, including but not limited to, the market price of our common stock.

The 2015 Equity Incentive Plan, adopted by us on June 24, 2015, as amended on April 26, 2016 and as further amended on April 27, 2017, February 20, 2019, April 24, 2019, April 28, 2021, April 28, 2022, April 25, 2024, October 22, 2024 and April 28, 2025 (the "2015 Plan"), provides for the withholding of shares to satisfy minimum statutory tax withholding obligations. It does not specify a maximum number of shares that can be withheld for this purpose. The shares of common stock withheld to satisfy minimum tax withholding obligations may be deemed to be "issuer purchases" of shares that are required to be disclosed pursuant to this Item 5.

The following table presents information with respect to purchases of common stock we made during the three months ended December 31, 2025.

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| | | | | |
|:---|:---|:---|:---|:---|
| **Period** | **Total Number of <br>Shares Purchased**<sup>(1)</sup> | **Average Price<br>Paid per Share** | **Total Number of<br>Shares Purchased<br>as Part of the 2025<br>Program**<sup>(2)</sup> | **Approximate Dollar<br>Value of Shares that<br>May Yet Be<br>Purchased Under<br>the 2025 Program**<sup>(2)</sup> |
| October 2025 | 5468 | $56.22 |  | $300.0 million |
| November 2025 | 1218175 | $54.52 | 1215731 | $231.9 million |
| December 2025 | 564670 | $60.81 | 554913 | $200.0 million |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | 1788313 |  | 1770644 | $200.0 million |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)Includes shares withheld to satisfy minimum statutory tax withholding amounts due from employees related to the receipt of stock which resulted from the exercise for vesting of equity awards.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)Reflects shares of our common stock repurchased under the 2025 Program, which expires in December 2027.

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**Securities Authorized for Issuance under Equity Compensations Plans**

The information required with respect to this item is incorporated herein by reference to our Definitive Proxy Statement for our 2026 Annual Meeting of Stockholders to be filed with the Securities and Exchange Commission no later than 120 days after the close of our year ended December 31, 2025.

**Item 6. [Reserved]**

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**Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations**

*The following discussion and analysis of our financial condition and results of operations should be read together with the consolidated financial statements and the related notes included in Item 8 of this Annual Report on Form 10-K ("Form 10-K"). This discussion contains forward-looking statements related to future events and our future financial performance that are based on current expectations and subject to risks and uncertainties. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of many factors, including those set forth in Part I, Item 1A. "Risk Factors" and "Cautionary Note Regarding Forward Looking Statements." included in this Form 10-K.*

*This section discusses 2025 and 2024 items and year-to-year comparisons between 2025 and 2024. Discussions of 2023 items and year-to-year comparisons between 2024 and 2023 have been excluded from this Form 10-K and can be found in "Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" of our Form 10-K for the fiscal year ended December 31, 2024, filed with the Securities and Exchange Commission ("SEC") on February 26, 2025.*

**Overview**

***Our Business***

We are the leading radiopharmaceutical-focused company committed to enabling clinicians to Find, Fight and Follow disease to deliver better patient outcomes. We classify our products into three product categories: Radiopharmaceutical Oncology, Precision Diagnostics, and Strategic Partnerships and Other Revenue. Our Radiopharmaceutical Oncology product helps healthcare professionals ("HCPs") Find, Fight and Follow cancer. Our Precision Diagnostic products assist HCPs to Find and Follow diseases. Our Strategic Partnerships include biomarkers and digital solutions in support of our partners' therapeutic development, out-licensing agreements for non-core assets and optimization of our assets geographically, as well as contract development and manufacturing organization ("CDMO") revenue generated by Evergreen.

Our commercial products are used by cardiologists, internal medicine physicians, neurologists, nuclear medicine physicians, oncologists, radiologists, sonographers, technologists, and urologists working in a variety of clinical settings. We believe that our diagnostic products provide information that enables HCPs to better detect and characterize, or rule out, disease, with the potential to achieve better patient outcomes, reduce patient risk, and limit overall costs.

We produce and market our products throughout the United States (the "United States" or the "U.S."), selling primarily to hospitals, independent imaging centers and government facilities. We generally sell our products outside the United States through a combination of direct distribution in Canada, third-party distribution relationships in Europe, Canada, Australia, Asia-Pacific, Central America and South America and by licensing exclusive rights to develop and commercialize certain products outside the United States.

We are headquartered in Massachusetts, with offices in New Jersey, Canada, Germany, Switzerland, Sweden and the United Kingdom.

**Recent Developments**

During 2025, we announced multiple strategic transactions, which shape and sharpen our strategic focus within the radiopharmaceutical industry. A brief description of these transactions is summarized below.

***Sale of SPECT Business***

On January 1, 2026, we completed the sale of our single-photon emission computerized tomography ("SPECT") business to SHINE Technologies, LLC ("SHINE"), a wholly-owned subsidiary of Illuminated Holdings, Inc. We are entitled to receive total consideration of up to $155.0 million, consisting of cash, a convertible installment note, a term note and contingent earnout payments. Under the terms of the definitive agreement, SHINE acquired the assets and liabilities associated with our SPECT business, including its approved products (TechneLite, NEUROLITE, Xenon Xe-133 Gas, and Cardiolite), the portion of the North Billerica, Massachusetts campus that manufactured our SPECT products and the SPECT-related Canadian operations. The transaction allows us to focus on growing our commercial portfolio of innovative PET radiodiagnostics and microbubbles, while advancing our pipeline of radiopharmaceuticals.

***Leadership Transition Plan***

Effective November 7, 2025, Mary Anne Heino, the Chair of our Board of Directors (the "Board"), was appointed to serve as our Executive Chair and principal executive officer. Additionally, on January 1, 2026 (the "Effective Date"), Ms. Heino became our Chief Executive Officer ("CEO"), following the retirement of our former CEO, Brian Markison on December 31, 2025. Ms. Heino will serve as CEO until such time as the Board completes the comprehensive search process that it initiated to

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identify and appoint the Company's next CEO. Mr. Markison has agreed to serve as a strategic advisor to the Company through at least March 31, 2026.

***Grant of Prescription Drug User Fee Act ("PDUFA") Date for LNTH-2501***

In October 2025, we announced that the FDA has set a PDUFA target action date of March 29, 2026 for LNTH-2501. LNTH-2501 is a diagnostic kit for the preparation of Gallium-68 ("Ga-68") edotreotide injection, which has been studied for use with PET imaging for localization of somatostatin receptor-positive neuroendocrine tumors in adult and pediatric patients.

***Acceptance of New Drug Application for MK-6240***

In October 2025, we announced that the FDA had accepted our New Drug Application ("NDA") for MK-6240, our registrational F-18 tau-targeted PET imaging agent for the detection of tau neurofibrillary tangle pathology in patients with cognitive impairment being evaluated for Alzheimer's disease, and has set a PDUFA target action date of August 13, 2026. During the second quarter of 2025, we announced that MK-6240 successfully met its co-primary endpoints in two pivotal studies assessing its sensitivity and specificity. The data from these two studies supported our NDA submission to the FDA. MK-6240 previously received Fast Track designation from the FDA for its potential to address an unmet medical need in Alzheimer's disease diagnostics.

***Exclusive License for Prostate Cancer Imaging Agent Piflufolastat F-18 in Japan***

On September 24, 2025, we announced an exclusive licensing agreement for GE HealthCare Limited ("GE Healthcare") to develop, manufacture, and commercialize Lantheus' piflufolastat F-18 PET imaging agent (marketed in the United States as PYLARIFY) in Japan for prostate cancer diagnostics and companion diagnostic use. Under the terms of the agreement, GE Healthcare paid us an upfront license fee and will pay us development milestones and tiered royalties based on product sales in Japan.

***Acceptance of NDA for PSMA PET Imaging Agent***

In August 2025, we announced that the FDA had accepted our NDA for a new formulation of our F-18 PSMA PET imaging agent, filed by our subsidiary Aphelion, and that the FDA has set a PDUFA target action date of March 6, 2026. The new formulation was designed to enhance product stability and increase batch production, with the potential to enhance supply flexibility and improve operating leverage across the network. If the NDA is approved, we plan to work closely with clinicians and PMF sites to ensure a smooth rollout of the new formulation, including providing clear guidance on ordering, handling, and clinical use to support continuity of care for patients, and we plan to apply for reimbursement from the Centers for Medicare & Medicaid Services ("CMS") for the new formulation, including seeking three years of TPT Status.

***Share Repurchase Program***

On July 31, 2025, our Board authorized a program to repurchase up to $400.0 million of shares of our common stock through December 31, 2027 (the "2025 Program"). The 2025 Program replaced the program authorized by the Board in November 2024 to repurchase up to $250 million of our common stock during the twelve months following the authorization (the "2024 Program"), including the remaining unused amounts under the 2024 Program. We repurchased 1.3 million shares for approximately $100.0 million under the 2024 Program in 2025. The 2025 Program authorizes us to purchase shares of our common stock from time to time via open market purchases at prevailing market prices, in privately negotiated transactions, block trades, or pursuant to trades intending to comply with Rule 10b5-1 under the Exchange Act or through other legally permissible means, depending on market conditions and in accordance with applicable rules and regulations. The timing, manner, price and amount of any repurchase will be subject to the discretion of our Management. The 2025 Program does not obligate us to acquire any particular amount of its common stock, and we may suspend or discontinue the 2025 Program at any time. We repurchased 3.5 million shares for approximately $200.0 million under the 2025 Program in 2025.

***Acquisition of Life Molecular Imaging Limited***

On July 21, 2025, we acquired Life Molecular, pursuant to the terms of the Sale and Purchase Agreement with Life Medical Group Limited ("Life Medical") and Life Healthcare Group Holdings Limited (the "Sale and Purchase Agreement" and, such acquisition, the "LMI Acquisition"). Life Molecular, headquartered in Berlin, Germany, possesses an Alzheimer's disease radiodiagnostic commercial infrastructure, research and development ("R&D") capabilities, and an established international footprint. The LMI Acquisition includes Neuraceq, an Alzheimer's disease radiodiagnostic. Neuraceq is commercially approved in the United States, Canada, the European Union, the United Kingdom, Switzerland, China, Japan, South Korea, and Taiwan.

As consideration for the LMI Acquisition, we remitted an upfront payment of $355.2 million in cash, and could be required to pay up to an additional $400.0 million in potential earn-out and milestone payments. In November 2025 and in accordance with the terms of the Sale and Purchase Agreement, we finalized the net working capital accounts with Life Medical and we received a $2.3 million payment from Life Medical. This $2.3 million payment was recorded as an adjustment to purchase

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consideration in the fourth quarter of 2025. Additionally, we assumed a contingent consideration liability owed to Piramal Holdings SA ("Piramal"), pursuant to a Securities Purchase Agreement between Piramal and Life Molecular.

Previously, on July 3, 2024,we acquired from Life Molecular the global rights to RM2, its clinical stage, gastrin-releasing peptide receptor ("GRPR")-targeting agent, including the associated novel, clinical-stage radiotherapeutic and radiodiagnostic pair, previously referred to as 177Lu-DOTA-RM2 and 68Ga-DOTA-RM2 (and which we now refer to as LNTH-2402 and LNTH-2401, respectively), for an upfront payment of $35.0 million plus a $1.0 million payment made prior to the acquisition (the "RM2 Asset Purchase"), pursuant to the Sublicense, Development and Collaboration Agreement, by and between us and Life Molecular, dated as of June 27, 2024 (the "RM2 Sublicense Agreement"). In addition, and pursuant to the RM2 Sublicense Agreement, we incurred €10.0 million in milestone achievements related to regulatory activities in 2025.

In connection with the LMI Acquisition, the RM2 Sublicense Agreement was amended to (i) reduce the contingent regulatory and development milestones by €45.0 million; (ii) assign the right to future payments from Life Molecular to its former parent, Life Medical; and (iii) eliminate certain other non-substantive rights contained in the RM2 Sublicense Agreement (the "RM2 Amendment"). We determined that the RM2 Amendment did not constitute settlement of a pre-existing relationship in accordance with Accounting Standards Codification 805, *"Business Combinations"*, and concluded that the amendment represented a modification to the RM2 Sublicense Agreement, whereby we did not reacquire any incremental rights or assets. Accordingly, we will continue to account for the RM2 Sublicense Agreement as an asset acquisition, separate from the LMI Acquisition. We may be required to pay Life Medical additional milestone payments and royalties in connection with the RM2 Asset Purchase. GRPR is a member of the bombesin G protein-coupled receptor family, which has been found to be overexpressed in multiple cancers. First-in-human dosimetry showed a favorable safety and dosimetry profile and confirmed preclinical data demonstrating dose-dependent efficacy of LNTH-2402. We submitted investigational new drug applications in support of a Phase 1b/2 clinical trial with the LNTH-2401/LNTH-2402 theranostic pair in prostate cancer patients in the fourth quarter of 2025.

For more information on the acquisition of the global rights to RM2, see Note 19,*"Acquisitions"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

In February 2026, we renamed Life Molecular to Lantheus Biosciences Ltd.

***Acquisition of Evergreen Theragnostics, Inc.***

On April 1, 2025, we acquired all the issued and outstanding shares of Evergreen by means of a statutory merger of our subsidiary with and into Evergreen, with Evergreen surviving as our wholly-owned subsidiary (the "Evergreen Merger"), pursuant to the terms of the Agreement and Plan of Merger (the "Evergreen Merger Agreement") with Evergreen and Shareholder Representative Services LLC. Evergreen is a clinical-stage radiopharmaceutical company engaged in CDMO services as well as drug discovery and commercialization of proprietary products.

As consideration for the Evergreen Merger, we made an upfront payment of $276.4 million in cash. In the event of achievement of specified milestones, we would be required to pay up to an additional $727.5 million in cash, which may be adjusted pursuant to the terms of the Evergreen Merger Agreement.

For more information, see Note 19, "*Acquisitions"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

***Acquisition of NAV-4694***

On June 18, 2024, we acquired Meilleur, including its asset NAV-4694, an investigational late-stage F-18-labeled PET imaging agent that targets beta amyloids in Alzheimer's disease. Under the terms of the agreement, we paid the stockholders of Meilleur ("Meilleur Stockholders") an upfront payment of $32.9 million and paid an additional $10.0 million in August 2024 after the successful completion of a technology transfer. We could pay additional milestone payments upon achievement of specified U.S. regulatory milestones related to NAV-4694. We could also pay double-digit milestone payments upon achievement of specified annual commercial sales and double-digit royalty payments for research revenue and commercial sales. Research revenue is derived from partnerships with pharmaceutical companies and academic institutions that use NAV-4694 in clinical trials. NAV-4694 is currently in Phase 3 development and is also being used in academic and industry sponsored clinical trials. In May 2025, we paid AstraZeneca AB ("AstraZeneca"), a $10.0 million one-time, non-refundable upfront payment to reduce the future royalty obligations owed to AstraZeneca pursuant to a license agreement between AstraZeneca and Meilleur related to NAV-4694.

For more information, see Note 19, *"Acquisitions"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

***Radiopharm Theranostics Limited***

On June 15, 2024, we entered into an agreement with Radiopharm Theranostics Limited ("Radiopharm") to acquire all of Radiopharm's rights to two licensed preclinical assets for an upfront payment of $2.0 million (the "Radiopharm Asset Purchase"). We acquired global, exclusive rights to both a leucine-rich repeat-containing protein 15-targeted radiotherapeutic, which we refer

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to as LNTH-2403, and a Trophoblast cell surface antigen-2 targeted radiodiagnostic, which we refer to as LNTH-2404, each of which is a preclinical therapeutic candidate. LNTH-2403 is our pre-clinical therapeutic targeting LRRC15, which is strongly expressed in multiple malignancies, including head and neck, breast, lung, and pancreatic cancers. In connection with this acquisition, we assumed the underlying license agreements related to the two preclinical assets, together with their respective milestone and royalty payment obligations.

During the third quarter of 2024, we purchased 149,625,180 shares of Radiopharm common stock ("Radiopharm Shares"), for an aggregate purchase price of approximately $5.0 million. During 2025, we purchased an aggregate additional 388,333,333 Radiopharm Shares for an aggregate purchase price of approximately $10.0 million.

For more information, see Note 19, "*Acquisitions"* and Note 4, *"Fair Value of Financial Instruments"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

***Strategic Agreements with Perspective Therapeutics, Inc.***

On January 8, 2024, we entered into multiple strategic agreements with Perspective Therapeutics, Inc. ("Perspective"), a radiopharmaceutical company that is pursuing advanced treatment applications for cancers throughout the body. Under the agreements, we obtained an option to exclusively license Perspective's Pb212-VMT-α-NET, a clinical stage alpha therapy in development for the treatment of neuroendocrine tumors, and an option to co-develop certain early-stage therapeutic candidates targeting prostate cancer using Perspective's innovative platform technology for an aggregate upfront payment of $28.0 million in cash.

On March 1, 2024, we transferred the fixed assets and associated lease of our Somerset, New Jersey facility (the "Somerset Facility") to Perspective, and the parties entered into a transition services arrangement pursuant to which we provided to Perspective certain services relating to final disposal of radioactive waste and certain other related services.

During 2024, we also purchased an aggregate of 11,677,339 shares of Perspective's common stock, after giving effect to a 1-for-10 reverse stock split, for $57.4 million.

For more information, see Note 19, *"Acquisitions"* and Note 4, *"Fair Value of Financial Instruments"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

***Other Strategic Changes***

During 2024, we reviewed our current capabilities and skillsets and "began implementing organizational changes deemed necessary to best position us to execute on our long-term strategy. These changes included transitioning approximately 75 employees out of the Company. For more information, see Note 13, *"Stockholders' Equity and Stock-Based Compensation"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

***Amendment of Credit Facility***

In December 2024, we amended our five-year revolving credit facility (as amended, the "2022 Revolving Facility"). The amendment, among other things, extended the maturity date from December 2, 2027 to December 19, 2029, increased the 2022 Revolving Facility from $350.0 million to $750.0 million and increased the additional amount that we may request to add to the increased revolving commitment by $350.0 million. The amendment also, among other things, (i) reduces the ranges of margins based on our Total Net Leverage Ratio (as defined in the 2022 Revolving Facility) used to calculate interest for the revolving loans and (ii) reduces the maximum unused commitment fee from 0.35% per annum to 0.30% per annum.

**Key Factors Affecting Our Results**

Our business and financial performance have been, and continue to be, impacted by the following:

***PYLARIFY and PSMA PET Revenue***

PYLARIFY, an F-18-labeled PET imaging agent targeting PSMA, was approved by the FDA in May 2021 and commercially launched in the United States in June 2021. PYLARIFY is indicated for PET imaging of PSMA-positive lesions in patients with prostate cancer with suspected metastasis who are candidates for initial definitive therapy and in patients with suspected recurrence based on elevated prostate-specific antigen levels. PYLARIFY is available through a diverse, multi-partner network of PMFs, including both commercial and academic partners.

The continued substantial revenue contribution from PYLARIFY is dependent on our ability to maintain PYLARIFY as a widely utilized PSMA PET imaging agent in an increasingly competitive space. PYLARIFY's competition includes three Ga-68-based PSMA imaging agents, an F-18-based PSMA imaging agent, and other non-PSMA-based imaging agents commonly referred to as conventional imaging. The potential for future generic entrants to the market due to the expiry of PYLARIFY's new chemical entity exclusivity period in 2026 could also generate increased competition for PYLARIFY, as well as ongoing

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development of additional F-18 and Ga-68 tracers and new PSMA tracers using additional isotopes, particularly Copper-64. We will continue to make investments necessary to drive PYLARIFY awareness and adoption.

Continued substantial revenue contribution from PYLARIFY will also depend on our ability to clinically differentiate PYLARIFY from competitive products so that customers continue to choose PSMA PET with PYLARIFY for appropriate patients because of its clinical differentiation and despite the loss of TPT Status and the related changes to Medicare fee-for-service ("FFS") hospital outpatient payment. Our Healthcare Procedure Coding System code, which enables streamlined billing, went into effect as of January 1, 2022. In addition, from January 1, 2022 to December 31, 2024, PYLARIFY had TPT Status from CMS in the hospital outpatient setting, enabling traditional Medicare FFS to provide separate payment for PYLARIFY in addition to the payment for the PET/computed tomography procedure in that setting. In November 2024, CMS released the final rule for its calendar year 2025 Medicare Hospital Outpatient Prospective Payment System (the "CMS 2025 OPPS Rule"), which recognized the value and need for broad access to diagnostic radiopharmaceuticals. The CMS 2025 OPPS Rule provided separate payment for those diagnostic radiopharmaceuticals with per day costs greater than $630 based on their mean unit cost ("MUC") for patients with traditional Medicare FFS insurance coverage who are treated in the hospital outpatient setting. In November 2025, CMS released the final rule for its calendar year 2026 Medicare Hospital Outpatient Prospective Payment System (the "CMS 2026 OPPS Rule"), which continues to provide for separate payment for diagnostic radiopharmaceuticals with per day costs greater than $655 based on their MUC. As a result, since January 1, 2025, CMS has maintained separate payment for PYLARIFY based on MUC in the hospital outpatient setting, which is lower than payments based on the average selling price that were made during TPT Status. Although PYLARIFY continues to be paid separately, other competitive PSMA PET imaging agents continue to have TPT Status after December 31, 2024, and hospital use of those products, for patients with traditional Medicare FFS in the hospital outpatient setting, generally will be paid separately based on ASP plus six percent rather than on MUC. In November 2025, in the preamble to the CMS 2026 OPPS Rule, CMS acknowledged that there could be value in the use of Average Sales Price ("ASP") for determining separately paid diagnostic radiopharmaceutical payment amounts in the future. However, CMS will continue to use the arithmetic MUC to calculate payment for diagnostic radiopharmaceuticals in 2026, explaining that there must be more consistent, validated, and universal reporting of ASP data for diagnostic radiopharmaceuticals before ASP can be the basis for payment. CMS reiterated in the CMS 2026 OPPS Rule that, although ASP reporting for diagnostic radiopharmaceuticals remains voluntary at this time, it will continue to evaluate whether and how ASP could be used for future Medicare Outpatient Prospective Payment System ("OPPS") payment once reporting is sufficiently consistent, validated, and universal. We report ASP and have repeatedly engaged CMS on methodology for reporting ASP, and we will continue to work with coalition partners and CMS to support using ASP rather than MUC to calculate payment for diagnostic radiopharmaceuticals in future years similar to the way OPPS currently pays for other drugs, biologics, and therapeutic radiopharmaceuticals.

Our plan to successfully grow our PSMA PET franchise includes obtaining approval for and commercializing a new formulation of our F-18 PSMA PET imaging agent, conveying our product's commercial and clinical value, negotiating and realizing the benefits from strategic contracts with customers in the United States, expanding PSMA PET in appropriate new patient populations, and through strategic partnerships and collaborations, including outside of the United States. On August 6, 2025, we announced that the FDA has accepted our NDA for a new formulation of our F-18 PSMA PET imaging agent. Internationally, we previously licensed exclusive rights to Curium Pharma ("Curium") to develop and commercialize piflufolastat F-18 in Europe, where it is being commercialized in the European Union under the brand name PYLCLARI. In September 2025, we entered into an exclusive licensing agreement for GE Healthcare to develop, manufacture, and commercialize piflufolastat F-18 in Japan for prostate cancer diagnostics and companion diagnostic use. We have also entered into strategic collaborations with pharmaceutical companies for the use of PYLARIFY in connection with the development of PSMA-targeted therapeutics. Additional information on these collaborations are described further under Part I, Item 1. *"Business - Strategic Partnerships and Other Revenue – Oncology"* of this Form 10-K.

***DEFINITY Revenue***

We believe we will be able to increase use of DEFINITY through continued education of physicians and HCPs about the benefits of ultrasound enhancing agents in suboptimal echocardiograms. The U.S. market currently has three echocardiography ultrasound enhancing agents approved by the FDA; we estimate that DEFINITY will continue to hold at least an 80% share of the U.S. segment for ultrasound enhancing agents in echocardiography procedures.

As we continue to grow our Microbubble Platform, our activities include:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Expansion of Label –* In March 2024, we received FDA approval for our supplemental NDA for the use of DEFINITY in pediatric patients with suboptimal echocardiograms. The FDA decision was based on usage data from three pediatric clinical trials conducted with DEFINITY.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Patents –* We continue to prosecute and maintain patents and patent applications in connection with DEFINITY, both in the United States and internationally. In the United States for DEFINITY, we have method-of-use patents listed in the FDA's publication, *"Approved Drug Products with Therapeutic Equivalence Evaluations"* (the "Orange Book"), as well as additional manufacturing patents that are not Orange Book-listed.

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***Neuraceq Revenue***

Neuraceq, an F-18 labeled PET imaging agent that binds selectively to beta-amyloid plaques in the brain, was approved by the FDA in 2014. Neuraceq is a radioactive diagnostic drug indicated for PET imaging of the brain to estimate amyloid beta neuritic plaque density in adults with cognitive impairment who are being evaluated for Alzheimer's disease and other causes of cognitive decline, and selection of patients who are indicated for amyloid beta-directed therapy as described in the prescribing information of the therapeutics products. Additional indications of Neuraceq were approved in 2025 to include selection of patients for amyloid-targeting therapies and quantitative PET analysis.

We believe future growth in Neuraceq revenue will depend on: (i) our ability to engage our existing PYLARIFY customers to introduce Neuraceq to those customers, (ii) expanded geographical access to Neuraceq, which in turn depends on our ability to increase Neuraceq manufacturing capacity at existing manufacturing sites and add additional sites, (iii) increased adoption and utilization of beta-amyloid PET and anti-amyloid therapeutics, (iv) increased utilization based on the updated Neuraceq prescribing information indicating that Neuraceq can be used for patient selection for anti-amyloid therapies where the prescribing information for the therapy so states, (v) our ability to educate customers on the approved uses of Neuraceq, including its ability to quantify the degree of amyloid burden in the brain and (vi) our ability to clinically differentiate Neuraceq from competitive products so that customers choose Neuraceq for appropriate patients because of its clinical attributes and despite the disparity in MUC payment rates for Neuraceq compared to other products used for traditional Medicare patients in the hospital outpatient setting.

***Expansion of Strategic Partnerships and Other Revenue***

We continue to seek ways to increase the overall value of our portfolio of products and product candidates. We are evaluating a number of different opportunities to collaborate, in-license or acquire additional products, product candidates, businesses and technologies to drive our future growth. In particular, with respect to our Strategic Partnerships and Other Revenue category, we are focused on radiopharmaceutical diagnostic and therapeutic product opportunities in oncology, neurology, and other strategic areas that will complement our existing portfolio.

Our Strategic Partnerships and Other Revenue category includes our Strategic Partnerships, Digital Solutions, Biomarker Solutions and CDMO services and is focused on enabling precision medicine with biomarkers, digital solutions, as well as providing CDMO services.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Strategic Partnerships*– We seek to monetize our assets through our Strategic Partnerships business, which includes biomarkers and digital solutions in support of our partners' therapeutic development, out-licensing agreements for non-core assets and optimization of our assets geographically. We have partnerships with pharmaceutical companies and academic institutions that use our commercial and investigational products in clinical trials as research tools.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Biomarker Solutions* – We use our Biomarker Solutions business to offer our Biomarker and Microbubble Platforms to academic institutions and pharmaceutical companies to support their R&D of therapeutic drugs and devices. The strategic goal of our Biomarker Solutions business is to gain early access to innovation, de-risk the development, generate data, embed our technologies in the clinical ecosystem and establish the clinical utility of product candidates and research tools in our pipeline. Our biomarkers are intended to support patient selection and the monitoring of disease progression.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*CDMO* – Through the Evergreen Merger, we acquired a current Good Manufacturing Practices certified radiopharmaceutical manufacturing facility that provides end-to-end manufacturing services for alpha- and beta-emitting radiopharmaceuticals, from early clinical development through commercial supply. Our CDMO offerings include process and analytical method development, technology transfer, process validation, production of clinical and commercial batches, release and stability testing, and integrated quality oversight under fully electronic Quality Management and Laboratory Information Management Systems. In addition, we coordinate raw material sourcing, just-in-time logistics, and packaging to facilitate timely delivery of finished product globally. Our CDMO's strategic location near major transportation hubs enables reliable distribution for short half-life products and supports customers across diagnostic and therapeutic indications.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Digital Solutions* – Our Digital Solutions are designed to enhance imaging value and the throughput, reproducibility and reliability of image analysis, as well as to inform treatment selection and response to therapy. We offer our Digital Solutions to HCPs for clinical use and to pharmaceutical companies for development purposes, and in some cases, we also obtain clinical imaging data that we may use to further develop artificial intelligence solutions*.* Our Digital Solutions include artificial intelligence medical device software, such as aPROMISE and Automated Bone Scan Index, both of which are FDA cleared and received a European Conformity Marking.

***Inventory Supply & Third Party Suppliers***

We obtain a substantial portion of our imaging agents from third-party suppliers. Jubilant HollisterStier ("JHS") is currently a significant supplier of DEFINITY. Our manufacturing and supply agreement with JHS (the "JHS MSA") runs through

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December 31, 2027 and can be further extended by mutual agreement of the parties. The JHS MSA requires us to purchase from JHS specified percentages of our total requirements for DEFINITY each year during the contract term. Either party can terminate the JHS MSA upon the occurrence of certain events, including the material breach or bankruptcy of the other party.

Radiopharmaceuticals are decaying radioisotopes with half-lives ranging from a few hours to several days. Radiopharmaceutical finished goods, such as doses of PYLARIFY and Neuraceq, cannot be kept in inventory because of their limited shelf lives and are subject to just-in-time manufacturing, processing, and distribution, which takes place at multiple PMF manufacturing partner sites that produce and deliver doses for us across the United States.

***Research and Development Expenses***

To ensure we remain the leading radiopharmaceutical-focused company, we have historically made and will continue to make substantial investments in new product development and lifecycle management for existing products, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For PYLARIFY, we are conducting a clinical trial to determine whether PYLARIFY can detect the presence or absence of additional prostate cancer lesions in patients with favorable intermediate-risk prostate cancer, as well as how it may change the patient's intended management. In late 2025, we discontinued a study using piflufolastat to diagnose and describe the extent of clear cell renal carcinoma in patients due to enrollment and timeline challenges and not for safety reasons as we prioritized resources towards programs with more feasible development paths.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For our PSMA PET franchise, we developed a new formulation of our F-18 PSMA PET imaging agent and filed an NDA, which was accepted by the FDA. The new formulation was designed to enhance product stability and increase batch production, with the potential to enhance supply flexibility and improve operating leverage across the network.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For PNT2002 and PNT2003, we were granted a license to exclusive worldwide rights (excluding certain countries) for $260.0 million in upfront payments during the fourth quarter of 2022 and will potentially make additional payments as described below. We also filed an Abbreviated New Drug Application ("ANDA") for PNT2003 as described further in the section entitled *"Exclusive License for PNT2002 and PNT2003"* in Part I, Item 1. *"Business - Other Notable Transactions"* of this Form 10-K.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For LNTH-2501, we acquired the rights to the investigational asset through our acquisition of Evergreen. The FDA established a PDUFA target action date for LNTH-2501 of March 29, 2026. The application for approval of LNTH-2501 was submitted under FDA's 505(b)(2) pathway.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For MK-6240, we acquired the right to the investigational asset for an upfront payment of $35.3 million in February 2023 and an additional $10.0 million in May 2023 upon the successful completion of a technology transfer and will potentially make additional milestone and royalty payments. During the second quarter of 2025, we announced that MK-6240 successfully met its co-primary endpoints in two pivotal studies assessing its sensitivity and specificity. The data from these two studies supported an NDA submission to the FDA that we filed during the third quarter of 2025. The FDA accepted our NDA and set a PDUFA target action date of August 13, 2026.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For NAV-4694, we acquired the rights to the investigational asset for an upfront payment of $32.9 million in June 2024 and an additional $10.0 million in August 2024 upon the successful completion of a technology transfer and will potentially make additional milestone and royalty payments. In May 2025, we paid AstraZeneca a $10.0 million one-time, non-refundable upfront payment to reduce the future royalty obligations owed to AstraZeneca, pursuant to a license agreement between AstraZeneca and Meilleur related to NAV-4694.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For LNTH-2515 (florbetaben F-18 injection), we acquired the rights to the asset through our acquisition of Life Molecular. LNTH-2515 is approved in the US and certain other countries to estimate amyloid beta neuritic plaque density in adults with cognitive impairment and is commercialized under the brand name Neuraceq. LNTH-2515 is currently developed for the diagnosis of amyloid light chain and transthyretin cardiac amyloidosis. FDA has granted Fast Track designation for this development.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For LNTH-1363S, in collaboration with Ratio Therapeutics LLC (previously NoriaTherapeutics Inc.), we completed a Phase 1 study to evaluate the pharmacokinetics, biodistribution, and radiation dosimetry in adult healthy volunteers. We are now enrolling patients diagnosed with sarcoma in a Phase 1/2a study. We are also exploring the clinical utility of LNTH-1363S in lung and cardiac fibrosis in investigator-led studies.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For RM2, we acquired global rights for an upfront payment of $35.0 million plus a $1.0 million payment made prior to the acquisition, incurred €10.0 million in milestone achievements related to regulatory activities, and could potentially make additional milestone and royalty payments in the future. We submitted IND applications in support of a Phase 1b/2 clinical trial with the LNTH-2401/LNTH-2402 theranostic pair in prostate cancer patients in the fourth quarter of 2025.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For LNTH-2403 and LNTH-2404, we acquired the rights to the preclinical assets and the underlying license agreements for $2.0 million and will potentially make additional milestone and royalty payments. The rights we acquired included exclusive license rights from third-party licensors. We ultimately were assigned all intellectual

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property rights to LNTH-2403 from the original third-party licensor and have certain financial obligations in the form of license fees and indemnification provisions to the third-party licensor as a result of that assignment. We submitted an IND application for LNTH-2403 and are initiating a Phase 1/2 multi-center, open-label study in participants with relapsed / refractory osteosarcoma.

For more information on potential milestone and royalty payments related to the product candidates listed above, see Note 19, *"Acquisitions"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

*PNT2002*

Under the terms of the PNT2002 License Agreement, we paid POINT Biopharma Global Inc. ("POINT") an upfront cash payment of $250.0 million. The Phase 3 registrational clinical trial for PNT2002, known as the "SPLASH" study, reached 100% of prespecified overall survival events. The results of the readout were comparable to the previously reported 46% and 75% readouts and remain confounded by the overwhelming number of patients who crossed over within the study to receive PNT2002. While we continue to review the available PNT2002 data, we do not currently plan to pursue an NDA or further invest in this asset.

*PNT2003*

Under the terms of the PNT2003 License Agreement, we paid POINT an upfront payment of $10.0 million, and could pay up to an additional $34.5 million in milestone payments upon the achievement of specified U.S. and ex-U.S. regulatory milestones. POINT is also eligible to receive up to $275.0 million in sales milestone payments upon the achievement of specified annual sales thresholds of PNT2003. In addition, POINT is eligible to receive royalty payments of 15% of net sales of PNT2003.

Our investments in these additional clinical activities and lifecycle management opportunities will increase our operating expenses and impact our results of operations and cash flow, and we can give no assurances as to whether any of these clinical development candidates or lifecycle management opportunities will be successful.

**Results of Operations**

The following is a summary of our consolidated results of operations:

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| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** | **2025 vs. 2024** | **2025 vs. 2024** | **2024 vs. 2023** | **2024 vs. 2023** |
| **(in thousands, except percent data)** | **2025** | **2024** | **2023** | **Change $** | **Change %** | **Change $** | **Change %** |
| Revenues | $1541609 | $1533910 | $1296429 | $7699 | 0.5% | $237481 | 18.3% |
| Cost of goods sold | 599657 | 545619 | 586886 | 54038 | 9.9% | (41267) | (7.0%) |
| &nbsp;&nbsp;Gross profit | 941952 | 988291 | 709543 | (46339) | (4.7%) | 278748 | 39.3% |
| Operating expenses |  |  |  |  |  |  |  |
| &nbsp;&nbsp;Sales and marketing | 178691 | 177940 | 141736 | 751 | 0.4% | 36204 | 25.5% |
| &nbsp;&nbsp;General and administrative | 275121 | 193689 | 125458 | 81432 | 42.0% | 68231 | 54.4% |
| &nbsp;&nbsp;Research and development | 177308 | 168098 | 77707 | 9210 | 5.5% | 90391 | 116.3% |
| Total operating expenses | 631120 | 539727 | 344901 | 91393 | 16.9% | 194826 | 56.5% |
| Gain on sale of assets |  | 8415 |  | (8415) | (100.0%) | 8415 | 100.0% |
| &nbsp;&nbsp;Operating income | 310832 | 456979 | 364642 | (146147) | (32.0%) | 92337 | 25.3% |
| Interest expense | 19749 | 19669 | 20019 | 80 | 0.4% | (350) | (1.7%) |
| Investment in equity securities - unrealized loss | 8617 | 43564 |  | (34947) | (80.2%) | 43564 | 100.0% |
| Other income, net | (31326) | (37231) | (66320) | 5905 | (15.9%) | 29089 | (43.9%) |
| &nbsp;&nbsp;Income before income taxes | 313792 | 430977 | 410943 | (117185) | (27.2%) | 20034 | 4.9% |
| Income tax expense | 80233 | 118535 | 84282 | (38302) | (32.3%) | 34253 | 40.6% |
| &nbsp;&nbsp;Net income | $233559 | $312442 | $326661 | $(78883) | (25.2%) | $(14219) | (4.4%) |

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**Comparison of the Periods Ended December 31, 2025 and 2024**

***Revenues***

We classify our revenues into three product categories: Radiopharmaceutical Oncology, Precision Diagnostics, and Strategic Partnerships and Other Revenue. Radiopharmaceutical Oncology consists of PYLARIFY and historically included AZEDRA. In the first quarter of 2024, we discontinued the production of AZEDRA. Precision Diagnostics includes DEFINITY, Neuraceq (which we acquired on July 21, 2025 as part of our acquisition of Life Molecular), and other diagnostic imaging products, and historically included TechneLite, which we sold to SHINE on January 1, 2026. Strategic Partnerships and Other Revenue primarily includes revenue derived from partnerships with pharmaceutical companies and academic institutions that use our commercial or investigational products in clinical trials as research tools. This category of revenues also includes royalties and other milestone payments received from our strategic partners that have commercialized products pursuant to license arrangements with us as well as CDMO revenue generated by Evergreen, which we acquired on April 1, 2025.

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Revenues are summarized by product category on a net basis as follows:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** | **2025 vs. 2024** | **2025 vs. 2024** |
| **(in thousands)** | **2025** | **2024** | **2023** | **Change $** | **Change %** |
| &nbsp;&nbsp;PYLARIFY | $989116 | $1057834 | $851303 | $(68718) | (6.5)% |
| &nbsp;&nbsp;Other radiopharmaceutical oncology |  | 384 | 3130 | (384) | (100.0)% |
| Total radiopharmaceutical oncology | 989116 | 1058218 | 854433 | (69102) | (6.5)% |
| &nbsp;&nbsp;DEFINITY | 330248 | 317792 | 279768 | 12456 | 3.9% |
| &nbsp;&nbsp;Neuraceq | 51447 |  |  | 51447 | 100.0% |
| &nbsp;&nbsp;TechneLite | 86803 | 95487 | 87370 | (8684) | (9.1)% |
| &nbsp;&nbsp;Other precision diagnostics | 24616 | 24231 | 22980 | 385 | 1.6% |
| Total precision diagnostics | 493114 | 437510 | 390118 | 55604 | 12.7% |
| &nbsp;&nbsp;Strategic partnerships and other revenue | 59379 | 38182 | 51878 | 21197 | 55.5% |
| Total revenues | $1541609 | $1533910 | $1296429 | $7699 | 0.5% |

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The increase in revenues for the year ended December 31, 2025, as compared to 2024, was primarily driven by revenues generated from sales of Neuraceq subsequent to our acquisition of Life Molecular in July 2025 and revenue from CDMO services generated subsequent to our acquisition of Evergreen in April 2025, in both cases, for which there were no comparable amounts in the same period of 2024, as well as by an increase in DEFINITY sales volume and a milestone achievement for the first commercial sale of Flyrcado by GE Healthcare and achievement of a clinical trial sales milestone with AstraZeneca. These increases were partially offset by a decrease in net sales price of PYLARIFY and a decrease in sales volume of TechneLite.

*Rebates* 

Estimates for rebates represent our estimated obligations under contractual arrangements with third parties. Rebate accruals are recorded in the same period the related revenue is recognized, resulting in a reduction of revenue and the establishment of a liability which is included in accrued expenses and other current liabilities in our consolidated balance sheets. These rebates result from performance-based offers that are primarily based on attaining contractually specified sales volumes and growth, Medicaid rebate programs for our products, administrative fees of group purchasing organizations and certain distributor-related commissions. The calculation of the accrual for these rebates is based on an estimate of the third-party's expected purchases and the resulting applicable contractual rebate to be earned over a contractual period.

A rollforward of the amount of, and change in, reserves for rebate liabilities is summarized as follows:

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| | |
|:---|:---|
| **(in thousands)** | **Rebates** |
| Balance at January 1, 2023 | $13399 |
| &nbsp;&nbsp;Provision related to current period revenues | 31855 |
| &nbsp;&nbsp;Payments or credits made during the period | (29184) |
| Balance at December 31, 2023 | 16070 |
| &nbsp;&nbsp;Provision related to current period revenues | 63504 |
| &nbsp;&nbsp;Payments or credits made during the period | (54326) |
| Balance at December 31, 2024 | 25248 |
| &nbsp;&nbsp;Provision related to current period revenues | 167628 |
| &nbsp;&nbsp;Payments or credits made during the period | (126428) |
| Balance at December 31, 2025 | $66448 |

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***Gross Profit*** 

The decrease in gross profit in 2025, as compared to 2024, is primarily due to the decrease in PYLARIFY net sales price. This decrease was partially offset by an increase in gross profit resulting from sales of Neuraceq subsequent to our acquisition of Life Molecular in July 2025, an increase in PYLARIFY sales volume, the recognition of royalty revenue from Curium and an increase in DEFINITY sales volume.

***Sales and Marketing***

Sales and marketing expenses consist primarily of salaries and other related costs for personnel in field sales, marketing, and customer service functions. Other costs in sales and marketing expenses include the development of advertising and promotional material, professional services, market research, and sales meetings.

Sales and marketing expenses increased $0.8 million in 2025, as compared to the prior year period. There was an overall decrease in third-party vendor and other marketing expenditures. In addition, there was a one-time investment in a brand campaign launch for PYLARIFY that took place in 2024, for which there was no comparable expense in 2025. The decrease also

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reflects the cessation in 2025 of launch support related to PNT2002. This was partially offset by increased sales and employee-related costs in connection with sales of Neuraceq subsequent to the acquisition of Life Molecular.

***General and Administrative***

General and administrative expenses consist of salaries and other related costs for personnel in executive, finance, legal, information technology, and human resource functions. Other costs included in general and administrative expenses are professional fees for information technology services, external legal fees, consulting and accounting services, as well as credit loss expense, certain facility and insurance costs, including director and officer liability insurance and fair value adjustments related to contingent consideration from acquisitions.

General and administrative expenses increased $81.4 million for the year ended December 31, 2025, as compared to the year ended December 31, 2024. This was primarily driven by the impact of the acquisitions of Evergreen in April 2025 and Life Molecular in July 2025, including increased professional fees and employee-related costs, such as stock-based compensation expense, in 2025 as compared to 2024. We also incurred additional litigation expenses in 2025 related to intellectual property matters. We also incurred costs in 2025 associated with the expected divestiture of the SPECT business through the impending sale to SHINE, which was completed on January 1, 2026.

***Research and Development***

R&D expenses relate primarily to salaries and costs related to the development of product candidates and costs related to our medical affairs, medical information and regulatory functions.

R&D expenses increased $9.2 million for the year ended December 31, 2025, as compared to the year ended December 31, 2024. This increase is primarily due to a payment made to AstraZeneca in 2025 of $10.0 million to reduce future royalty obligations for NAV-4694, $11.2 million (€10 million) in milestone achievements related to regulatory activities for RM2, expenses related to the ongoing project costs of Evergreen and Life Molecular included in our consolidated results for 2025, for which there were no comparable amounts in 2024, and increases in project costs during 2025 related to the assets we acquired in 2024 including LNTH-2401, LNTH-2402, LNTH-2403, and NAV-4694. These increases were primarily offset by a series of non-recurring payments made in 2024, including upfront payments of $36.0 million to Life Molecular to sublicense LNTH-2401 and LNTH-2402, $28.0 million to Perspective, and $2.0 million to Radiopharm to sublicense LNTH-2403 and LNTH-2404, for which there were no comparable amounts paid during 2025.

***Gain on Sale of Assets***

Gain on sale of assets includes a $6.3 million gain resulting from the sale of the Somerset Facility to Perspective in March 2024. In addition, we recorded a $2.1 million gain on sale of assets in December 2024 related to the sale of a portion of our North Billerica campus.

***Investment in Equity Securities - Net Unrealized Loss***

Each quarter, our investments in equity securities of Radiopharm and Perspective are revalued to market price. Investment in equity securities - unrealized loss decreased $34.9 million for 2025, compared to 2024. For the year ended December 31, 2025, we recorded an unrealized loss on the investment in Radiopharm of $3.6 million and recorded an unrealized loss on the investment in Perspective of $5.1 million. This is compared to unrealized losses on the investments in Radiopharm and Perspective of $2.6 million and $41.0 million, respectively, for the year ended December 31, 2024.

***Other Income, Net***

Other income, net decreased by $5.9 million for the year ended December 31, 2025 as compared to the prior year period, primarily due to a decrease in interest income of approximately $13.4 million due to lower average cash balances after the acquisitions of Evergreen in April 2025 and Life Molecular in July 2025. This is partially offset by a $5.0 million gain on sale, paid to us by the purchaser of the RELISTOR licensed intangible asset, associated with the 2025 achievement of a sales-based milestone, and by a $4.7 million adjustment recorded to reduce the previous estimate of remediation costs related to the decommissioning of our facilities that previously housed radioactive-related operations. See Note 9, *"Asset Retirement Obligations,"* for more information on our asset retirement obligation.

***Income Tax Expense***

Our effective tax rate for each reporting period is presented as follows:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
|  | **2025** | **2024** | **2023** |
| &nbsp;&nbsp;Effective tax rate | 25.6% | 27.5% | 20.5% |

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Our effective tax rate in fiscal 2025 differs from the U.S. statutory rate of 21% primarily due to state income taxes, partially offset by tax credits.

The decrease in the effective tax rate in 2025 is primarily due to the change in the valuation allowance related to the fluctuation in value of our investment in equity securities.

On July 4, 2025, H.R.1, the One Big Beautiful Bill Act (the "OBBBA") was signed into law. The OBBBA provides for significant U.S. tax law changes, including the permanent extension of certain expiring provisions of the Tax Cuts and Jobs Act, modifications to the international tax framework, and the restoration of favorable tax treatment for certain business provisions. These provisions did not have a material impact on our effective income tax rate for 2025.

Our effective tax rate in fiscal 2024 differed from the U.S. statutory rate of 21% primarily due to state income taxes and the valuation allowance established on the net unrealized loss on our investment in equity securities.

**Liquidity and Capital Resources**

***Cash Flows***

The following table provides information regarding our cash flows:

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|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| Net cash provided by operating activities | $390141 | $544750 | $305260 |
| Net cash (used in) provided by investing activities | $(627168) | $(226015) | $5939 |
| Net cash used in financing activities | $(316584) | $(118536) | $(13062) |

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For a discussion of our liquidity and capital resources related to our cash flow activities for the fiscal year ended December 31, 2023, see Part II, Item 7. *"Management's Discussion and Analysis of Financial Condition and Results of Operations"* of our Form 10-K for the fiscal year ended December 31, 2024, filed with the Securities and Exchange Commission on February 26, 2025.

*Net Cash Provided by Operating Activities*

Net cash provided by operating activities of $390.1 million during the year ended December 31, 2025 was primarily comprised of net income adjusted for the net effect of non-cash items such as unrealized loss on investment in equity securities, charges incurred in connection with the RM2 license, adjustments to the fair value of asset retirement obligation and contingent assets and liabilities, depreciation, amortization and accretion expense, deferred taxes and stock-based compensation expense. The primary working capital sources of cash include an increase in accounts payable which was attributable to the timing of payments to large vendors. The primary working capital uses of cash include an increase in trade receivables associated primarily with the timing of billings and collections and the acquisitions of Life Molecular and Evergreen in the year, an increase in inventory related to the timing of batch processes and an increase in income tax receivable. In addition, we recognized post-combination expense of approximately $9.7 million attributed to the acceleration of historical Evergreen and Life Molecular stock awards.

Net cash provided by operating activities of $544.8 million during the year ended December 31, 2024 was primarily comprised of net income adjusted for non-cash items such as unrealized loss on investment in equity securities, charges incurred in connection with the Perspective in-process R&D ("IPR&D") exclusive license options, charges related to Radiopharm's licensed assets, charges related to Life Molecular's RM2 license, gains on disposal of our Somerset Facility and a portion of our North Billerica, Massachusetts facility, depreciation, amortization and accretion expense and stock-based compensation expense. The primary working capital sources of cash is attributable to an increase in income taxes payable in 2024. The primary working capital uses of cash were due to the timing of payments to large vendors, an increase in trade receivables associated primarily with the increase in PYLARIFY revenues, and an increase in inventory related to the timing of batch processes.

*Net Cash Used in Investing Activities*

Net cash used in investing activities during the year ended December 31, 2025 was driven by $268.9 million paid to the former holders of Evergreen Shares for the acquisition of Evergreen, net of cash acquired, $306.7 million paid for the acquisition of Life Molecular net of cash acquired, $10.0 million used to purchase equity securities, $5.4 million of milestone payments related to RM2 made in 2025 and $36.1 million of capital expenditures.

Net cash used in investing activities during the year ended December 31, 2024 was driven by an upfront option payment of $28.0 million to Perspective, $36.0 million of payments for the RM2 Asset Purchase, $42.9 million payments to the Meilleur Stockholders for the acquisition of Meilleur, $2.0 million for the Radiopharm Asset Purchase, $83.2 million for the purchase of equity securities in Perspective and Radiopharm, and $51.6 million of capital expenditures, partially offset by net cash proceeds of $17.8 million from the sale of the Somerset Facility and a portion of our North Billerica, Massachusetts facility, and associated assets.

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*Net Cash Used in Financing Activities*

Net cash used in financing activities during the year ended December 31, 2025 is primarily attributable to the repurchase of our common stock for approximately $300.0 million, the payments for minimum statutory tax withholding related to net share settlement of equity awards of $26.3 million and payments for finance leases of $1.1 million, offset by proceeds of $10.9 million from stock option exercises and issuance of common stock.

Net cash used in financing activities during the year ended December 31, 2024 is primarily attributable to the repurchase of our common stock for approximately $100.0 million, the payments for minimum statutory tax withholding related to net share settlement of equity awards of $22.6 million and the payment of $2.3 million of financing costs related to the refinancing of our credit facility described below, offset by proceeds of $6.7 million from stock option exercises.

***External Sources of Liquidity***

In December 2024, we entered into an amendment to our five-year revolving credit facility (as amended, the "2022 Revolving Facility") that, among other things, extended the maturity date from December 2, 2027 to December 19, 2029, increased the 2022 Revolving Facility from $350.0 million to $750.0 million and increased the additional amount that Lantheus Medical may request to add to the increased revolving commitment by $350.0 million. The amendment also, among other things, (i) reduces the ranges of margins based on our Total Net Leverage Ratio (as defined in the 2022 Revolving Facility) used to calculate interest for the revolving loans and (ii) reduces the maximum unused commitment fee from 0.35% per annum to 0.30% per annum. The full terms of the 2022 Revolving Facility are set forth in the Credit Agreement, dated as of December 2, 2022, by and among us, the lenders from time to time party thereto and Citizens Bank, N.A., as administrative agent and collateral agent, as amended. We have the right to request an increase to the 2022 Revolving Facility or request the establishment of one or more new incremental term loan facilities, in an aggregate principal amount of up to the greater of $685.0 million (so that the total amount available is $1.44 billion) or 100% of consolidated earnings before interest, taxes, depreciation and amortization for the four consecutive fiscal quarters most recently ended, plus additional amounts, in certain circumstances.

Under the terms of the 2022 Revolving Facility, the lenders thereunder agreed to extend credit to us from time to time until December 19, 2029 consisting of revolving loans in an aggregate principal amount not to exceed $750.0 million at any time. The 2022 Revolving Facility includes a $40.0 million sub-facility for the issuance of letters of credit (the "Letters of Credit"). The 2022 Revolving Facility includes a $20.0 million sub-facility for swingline loans (the "Swingline Loans"). The Letters of Credit, Swingline Loans and the borrowings under the 2022 Revolving Facility are expected to be used for working capital and other general corporate purposes.

For more information on the 2022 Revolving Facility, see Note 12, *"Long-Term Debt and Other Borrowings, Net of Current Portion"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

As of December 31, 2025, we were in compliance with all financial and other covenants under the 2022 Revolving Facility.

On December 8, 2022, we issued $575.0 million in aggregate principal amount of 2.625% Convertible Senior Notes due December 2027 (the "Notes"), which includes $75.0 million in aggregate principal amount of Notes sold pursuant to the full exercise of the initial purchasers' option to purchase additional Notes. The Notes were issued under an indenture, dated as of December 8, 2022 (the "Indenture"), among the Company, Lantheus Medical, as guarantor, and U.S. Bank Trust Company, National Association, as Trustee. The net proceeds from the issuance of the Notes were approximately $557.8 million, after deducting the initial purchasers' discounts and offering expenses payable by us.

On August 2, 2023, we sold the right to our RELISTOR royalty asset under our license agreement with Salix Pharmaceuticals, Inc., an affiliate of Bausch Health Companies, Inc.; we retained the rights to future sales-based milestone payments. We received an initial payment in 2023 of approximately $98.0 million in connection with the sale and earned additional consideration of $5.0 million in 2025 as a result of the achievement of a sales-based milestone. Following such sale, we no longer receive tiered, sales-based royalties on worldwide net sales of RELISTOR related to the second quarter of 2023 and subsequent quarters.

On July 31, 2025, our Board authorized the 2025 Program. The 2025 Program replaces the 2024 Program, including the remaining unused amounts under the 2024 Program. We repurchased 1.3 million shares for approximately $100.0 million under the 2024 Program in 2025. The 2025 Program authorizes us to purchase shares of our common stock from time to time via open market purchases at prevailing market prices, in privately negotiated transactions, block trades, or pursuant to trades intending to comply with Rule 10b5-1 under the Exchange Act or through other legally permissible means, depending on market conditions and in accordance with applicable rules and regulations. The timing, manner, price and amount of any repurchase will be subject to the discretion of our Management. The 2025 Program does not obligate us to acquire any particular amount of our common stock, and we may suspend or discontinue the 2025 Program at any time. We repurchased 3.5 million shares for approximately $200.0 million under the 2025 Program in 2025, with approximately $200.0 million remaining available for repurchase.

Our ability to fund our future capital needs will be affected by our ability to continue to generate cash from operations and may be affected by our ability to access the capital markets, money markets or other sources of funding, as well as the capacity and terms of our financing arrangements.

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We may from time to time repurchase or otherwise retire our debt and take other steps to reduce our debt or otherwise improve our balance sheet. These actions may include prepayments of our term loans or other retirements or refinancing of outstanding debt, privately negotiated transactions or otherwise. The amount of debt that may be retired, if any, could be material and would be decided at the sole discretion of our Board and will depend on market conditions, our cash position and other considerations.

***Funding Requirements***

Our future capital requirements will depend on many factors, including:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The level of product sales and the pricing environment of our currently marketed products, particularly PYLARIFY, DEFINITY and Neuraceq, as well as any additional products that we may market in the future;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Revenue mix shifts and associated volume and selling price changes that could result from additional competition or changes in customers' product demand;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The continued costs of the ongoing commercialization of our products;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The costs involved in launch preparation activities in anticipation of potential regulatory approvals;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The costs to successfully integrate acquisitions, including of Life Molecular and Evergreen, which could be impacted by unforeseen expenses related to integration activities and liabilities within those businesses;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our investment in the further clinical development and commercialization of products and development candidates, as well as whether we exercise our option and co-development rights under certain license agreements;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The costs of acquiring or in-licensing, developing, obtaining regulatory approval for, and commercializing, new products, businesses or technologies, including any potential related milestone or royalty payments, together with the costs of pursuing opportunities that are not eventually consummated;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The costs of investing in our facilities, equipment, and technology infrastructure;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The costs and timing of establishing or amending manufacturing and supply arrangements for commercial supplies of our products and raw materials and components;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to have products manufactured and released from manufacturing sites in a timely manner in the future, or to manufacture products at our in-house manufacturing facilities in amounts sufficient to meet our supply needs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The costs of further commercialization of our existing products, particularly in international markets, including product marketing, sales and distribution and whether we obtain local partners to help share such commercialization costs;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The legal costs relating to maintaining, expanding and enforcing our intellectual property portfolio, pursuing insurance or other claims and defending against product liability, regulatory compliance, intellectual property, security law or other claims, including the patent infringement claim related to the filing of our ANDA for PNT2003, our patent infringement lawsuit against a healthcare-related imaging software developer and the putative securities class action against us;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The cost of interest on any additional borrowings which we may incur under our financing arrangements;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•The impact of sustained inflation on our costs of goods sold and operating expenses; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Our ability to continuously improve our operating efficiencies and control and reduce costs.

Disruption in our financial performance could occur if we experience significant adverse changes in product or customer mix, significant changes in our competitive or regulatory environment, broad economic downturns, sustained inflation, adverse industry or company conditions or catastrophic external events, including pandemics, natural disasters and political or military conflict. If we experience one or more of these events in the future, we may be required to implement expense reductions, such as a delay or elimination of discretionary spending in all functional areas, as well as scaling back select operating and strategic initiatives.

If our capital resources become insufficient to meet our future capital requirements, we would need to finance our cash needs through public or private equity offerings, debt financings, assets securitizations, sale-leasebacks or other financing or strategic alternatives, to the extent such transactions are permissible under the covenants of our 2022 Revolving Facility. Additional equity or debt financing, or other transactions, may not be available on acceptable terms, if at all. If any of these transactions require an amendment or waiver under the covenants in our 2022 Revolving Facility, which could result in additional expenses associated with obtaining the amendment or waiver, we will seek to obtain such an amendment or waiver to remain in compliance with those covenants. However, we cannot provide assurance that such an amendment or waiver would be granted, or that additional capital will be available on acceptable terms, if at all.

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At December 31, 2025, our only current committed external source of funds is our borrowing availability under our 2022 Revolving Facility. We had $359.1 million of cash and cash equivalents as of December 31, 2025. Our 2022 Revolving Facility contains a number of affirmative, negative, reporting and financial covenants, in each case subject to certain exceptions and materiality thresholds. Incremental borrowings under the 2022 Revolving Facility may affect our ability to comply with the covenants including the financial covenants restricting consolidated net leverage and interest coverage. Accordingly, we may be limited in utilizing the full amount of our 2022 Revolving Facility as a source of liquidity.

Based on our current operating plans, we believe our balance of cash and cash equivalents, which totaled $359.1 million as of December 31, 2025, along with cash generated by ongoing operations and continued access to our 2022 Revolving Facility, will be sufficient to satisfy our cash requirements over the next twelve months and beyond. Our material cash requirements include the following contractual and other obligations.

*Debt*

We completed a sale of $575.0 million in aggregate principal amount of the Notes due in December 2027. As of December 31, 2025, we had no amounts of principal due within the next twelve months. Future interest payments associated with the Notes total $29.3 million, with $15.3 million payable within twelve months. We may redeem for cash all or any portion of the Notes, at our option, if the closing sale price per share of our common stock exceeds 130% of the conversion price of the Notes for a specified period of time. For more information on our cash requirements under the Notes, see Note 12, *"Long-Term Debt and Other Borrowings, Net of Current Portion"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

*Leases*

We have operating lease arrangements for certain facilities, including corporate and manufacturing space. As of December 31, 2025, we had fixed operating lease payment obligations of $86.1 million, with $7.2 million payable within twelve months.

We have lease arrangements for certain equipment. As of December 31, 2025, we had fixed finance lease payment obligations of $1.3 million, with $0.8 million payable within twelve months.

*Purchase Obligations*

We have purchase obligations that primarily consist of noncancelable obligations related to minimum quantities of goods or services that have been committed to be purchased on an annual basis. As of December 31, 2025, we had minimum purchase obligations of $23.5 million, with $14.8 million due within twelve months.

*License Agreements*

We have entered into license agreements in which fixed payments have been committed to be paid on an annual basis. As of December 31, 2025, we had no amount of fixed license payments due within twelve months. These amounts do not include potential milestone or contractual payment obligations contingent upon the achievement or occurrence of future milestones or events under our license agreements, because they are contingent and the amounts and timing of such potential obligations are unknown or uncertain. We may be required to pay approximately $4.9 billion in contingent payments under our license agreements.

*Asset Acquisitions*

On February 6, 2023, we acquired Cerveau and made an upfront payment of approximately $35.3 million to the Cerveau Stockholders. We paid the Cerveau Stockholders an additional $10.0 million in May 2023 upon the successful completion of a technology transfer. We could pay up to an additional $51.0 million in milestone payments upon achievement of specified U.S. regulatory milestones related to MK-6240. The Cerveau Stockholders are also eligible to receive up to $1.2 billion in sales milestone payments upon the achievement of specified annual commercial sales thresholds of MK-6240, as well as up to $13.5 million in research revenue milestones upon achievement of specified annual research revenue thresholds. Finally, we will pay to the Cerveau Stockholders up to double-digit royalty payments for research revenue and commercial sales. As of December 31, 2025, these contingent payments were not expected to be payable due to the uncertainty around the timing of the future cash flows.

On June 18, 2024, we acquired Meilleur, including its asset NAV-4694, an investigational late-stage F-18-labeled PET imaging agent that targets beta amyloids in Alzheimer's disease. We made an upfront payment of approximately $32.9 million to the Meilleur Stockholders on June 18, 2024 and paid an additional $10.0 million in August 2024 after the successful completion of a technology transfer. We could pay up to an additional $43.0 million in milestone payments upon achievement of specified U.S. regulatory milestones related to NAV-4694. The Meilleur Stockholders are also eligible to receive up to $830.0 million in sales milestone payments upon the achievement of specified annual commercial sales thresholds of NAV-4694 as well as up to $4.0 million in remaining research milestones upon achievement of specified clinical studies at academic institutions thresholds. Additionally, we could pay the Meilleur Stockholders up to double-digit royalty payments for research revenue and commercial

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sales. As of December 31, 2025, these contingent payments were not expected to be payable due to the uncertainty around the timing of the future cash flows.

On April 1, 2025, we acquired Evergreen pursuant to the Evergreen Merger Agreement. In connection with this acquisition, in the event of achievement of specified milestones, we would be required to pay up to an additional $727.5 million in cash, which may be adjusted pursuant to the terms of the Evergreen Merger Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On July 21, 2025, we acquired Life Molecular, pursuant to the terms of the Sale and Purchase Agreement. In connection with this acquisition, we could be required to pay up to an additional $400.0 million in potential earn-out and milestone payments, as well as a contingent consideration liability owed to Piramal pursuant to a Securities Purchase Agreement between Piramal and Life Molecular.

For further information on possible funding requirements resulting from our asset acquisitions, see Note 19, "*Acquisitions"* to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K.

*Other Long-Term Liabilities*

Our other long-term liabilities in the consolidated balance sheet include the fair values of contingent consideration liabilities related to a previous acquisition completed by Progenics in 2013, and resulting from the Evergreen Merger and LMI Acquisition in 2025. We may be required to pay up to approximately $1.24 billion related to the contingent consideration. As of December 31, 2025, these contingent payments were not expected to be payable within twelve months due to the uncertainty around the timing of the future cash flows.

Our other long-term liabilities in the consolidated balance sheet include unrecognized tax benefits and related interest and penalties. As of December 31, 2025, we had unrecognized tax benefits of $29.6 million, which included interest and penalties, classified as noncurrent liabilities. At this time, we are unable to make a reasonably reliable estimate of the timing of payments in individual years in connection with these tax liabilities.

*Asset Retirement Obligation*

We are required to provide the Massachusetts Department of Public Health financial assurance demonstrating our ability to fund the decommissioning of our North Billerica, Massachusetts production facility, upon closure. We have provided this financial assurance in the form of a $30.3 million surety bond (the "Surety Bond"). As of December 31, 2025, the liability for this decommissioning obligation, which was approximately $0.1 million, was measured at the present value of the obligation expected to be incurred of approximately $20.4 million. The liability for the decommissioning obligation reflects that, in 2025, $17.5 million was reclassified to liabilities held for sale as a result of the sale of the assets and liabilities associated with our SPECT business, which was completed on January 1, 2026 (see Note 8, "*Assets and Liabilities Held for Sale*" to our consolidated financial statements included in Part II, Item 8, *"Financial Statements and Supplementary Data"* of this Form 10-K). These contingent payments are not expected to be payable within twelve months due to the uncertainty around the timing of the future cash flows related to the decommissioning of our radioactive operations.

**Off-Balance Sheet Arrangements**

As noted above, we have provided the Surety Bond to the Massachusetts Department of Public Health.

Since inception, we have not engaged in any other off-balance sheet arrangements, including structured finance, special purpose entities, or variable interest entities.

**Effects of Inflation**

We do not believe that inflation has had a significant impact on our results of operations. We expect our cost of product sales and other operating expenses will change in the future in line with periodic inflationary changes in price levels. Because we intend to retain and continue to use our property and equipment, we believe that the incremental inflation related to the replacement costs of those items will not materially affect our operations. However, the rate of inflation affects our expenses, such as those for employee compensation and contract services, which could increase our level of expenses and the rate at which we use our resources. While we generally believe that we will be able to offset some of the effect of price-level changes by adjusting our product prices and implementing operating efficiencies, any material unfavorable changes in price levels could have a material adverse effect on our business, financial condition, results of operations and cash flows.

**Recent Accounting Standards**

Refer to Note 2, *"Summary of Significant Accounting Policies,"* in the accompanying consolidated financial statements located under Item 8 of this Form 10-K for information regarding recently issued accounting standards that may have a significant impact on our business.

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**Critical Accounting Policies**

The discussion and analysis of our financial condition and results of operations are based on our consolidated financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States. The preparation of these consolidated financial statements require us to make estimates and judgments that affect our reported assets and liabilities, revenues and expenses, and other financial information. Actual results may differ materially from these estimates under different assumptions and conditions. In addition, our reported financial condition and results of operations could vary due to a change in the application of a particular accounting standard.

We believe the following represent our critical accounting estimates used in the preparation of our financial statements.

***Revenue from Contracts with Customers***

Revenue is measured based on a consideration specified in a contract with a customer, and excludes any sales incentives and amounts collected on behalf of third parties. We recognize revenue when we satisfy our performance obligations by transferring control over products or services to our customers. The amount of revenue we recognize reflects the consideration to which we expect to be entitled to receive in exchange for these goods or services. To achieve this core principle, we apply the following five steps: (1) identify the contracts with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) we satisfy performance obligations.

We derive our revenues through arrangements with customers for product sales, as well as licensing and royalty arrangements and CDMO contracts. We sell our products primarily to hospitals, independent diagnostic testing facilities, and radiopharmacies, and we consider customer purchase orders, which in some cases are governed by master sales or group purchasing organization agreements, to be contracts with our customers. In addition to these arrangements, we also enter into licensing agreements under which we license certain rights to third parties. The terms of these arrangements typically include payment to us of one or more of the following: non-refundable, up-front license fees; development services, regulatory and commercial milestone payments; manufacturing, and royalties on net sales of licensed products. We analyze various factors requiring management judgment when applying the five-step model to our contracts with customers.

Our product revenues are recorded at the net sales price (transaction price), which represents our sales price less estimates related to reserves which are established for items such as discounts, returns, rebates and allowances that may be provided for in certain contracts with our customers. Judgment is used in determining and updating our reserves on an ongoing basis, and where appropriate, these estimates take into consideration a range of possible outcomes which are probability-weighted for relevant factors such as our historical experience, current contractual and statutory requirements, specific known market events and trends, industry data and forecasted customer buying and payment patterns. Overall, these reserves reflect our best estimates of the amount of consideration to which it is entitled based on the terms of the contract. Actual amounts of consideration ultimately received may differ from our estimates.

For our licensing and royalty arrangements, we use judgment in determining the number of performance obligations in a license agreement by assessing whether the license is distinct or should be combined with another performance obligation, as well as the nature of the license. As part of the accounting for these arrangements, we develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in a contract. These key assumptions may include market conditions, reimbursement rates for personnel costs, development timelines and probabilities of regulatory success.

We generate a small amount of CDMO revenue providing contract development and manufacturing services to emerging and mid-sized radiopharmaceutical companies developing alpha- and beta-emitting diagnostic and therapeutic products across early- to late-stage clinical development, with the ability to support commercial supply.

We assess each agreement involving CDMO services to determine if there are multiple performance obligations, and allocate revenue to each performance obligation based on its stand-alone selling price relative to the stand-alone selling prices of other performance obligations within the contract. CDMO contracts generally have defined terms, generally one to two years; however, the timing of satisfaction of performance obligations is typically contingent on customer clinical trial progress and development timelines. We recognize revenue when we satisfy each performance obligation, which is generally when services are completed and quality-approved products are shipped and title transfers to the customer.

***Business Combinations***

We account for business combinations using the acquisition method of accounting. We recognize the assets acquired and liabilities assumed in business combinations on the basis of their fair values at the date of acquisition. We assess the fair value of assets acquired, including intangible assets, and liabilities assumed using a variety of methods. Each asset acquired and liability assumed is measured at fair value from the perspective of a market participant. The method used to estimate the fair values of intangible assets incorporates significant assumptions regarding the estimates a market participant would make in order to evaluate an asset, including a market participant's use of the asset and the appropriate discount rates. Acquired IPR&D is recognized at fair value and initially characterized as an indefinite-lived intangible asset, irrespective of whether the acquired

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IPR&D has an alternative future use. Any excess purchase price over the fair value of the net tangible and intangible assets acquired is allocated to goodwill. Transaction costs and restructuring costs associated with a business combination are expensed as incurred.

The fair values assigned to tangible and intangible assets acquired and liabilities assumed are based on our estimates and assumptions, as well as other information we have compiled, including valuations that utilize customary valuation procedures and techniques. If the actual results differ from the estimates and assumptions used in these estimates, it could result in a possible impairment of the intangible assets and goodwill, a required acceleration of the amortization expense of finite-lived intangible assets or the recognition of additional consideration, which would be expensed.

During the measurement period, which extends no later than one year from the acquisition date, we may record certain adjustments to the carrying value of the assets acquired and liabilities assumed with the corresponding offset to goodwill. After the measurement period, all adjustments are recorded in the consolidated statements of operations as operating expenses or income.

***Intangible and Long-Lived Assets***

We test intangible and long-lived assets for recoverability whenever events or changes in circumstances suggest that the carrying value of an asset or group of assets may not be recoverable. We measure the recoverability of assets to be held and used by comparing the carrying amount of the asset to future undiscounted net cash flows expected to be generated by the asset. If those assets are considered to be impaired, the impairment equals the amount by which the carrying amount of the assets exceeds the fair value of the assets. Any impairments are recorded as permanent reductions in the carrying amount of the assets. Long-lived assets, other than goodwill and other intangible assets, that are held for sale are recorded at the lower of the carrying value or the fair market value less the estimated cost to sell.

Intangible assets, consisting of trademarks, customer relationships, currently marketed products, licenses and developed technology are amortized in a method equivalent to the estimated utilization of the economic benefit of the asset.

Costs of IPR&D intangible assets acquired as part of an asset acquisition that have no alternative future use are expensed when incurred. Milestone payments made after regulatory approval are capitalized as an intangible asset and amortized over an estimated useful life of the product. Cash payments related to acquired IPR&D intangible assets are reflected as an investing cash flow in the Company's consolidated statement of cash flows.

Our IPR&D intangible assets include intangible assets acquired in a business combination that are used in R&D activities but have not yet reached technological feasibility, regardless of whether they have alternative future use. The primary basis for determining the technological feasibility or completion of these projects is whether we have obtained regulatory approval to market the underlying products in an applicable geographic region. Because obtaining regulatory approval can include significant risks and uncertainties, the eventual realized value of the acquired IPR&D projects may vary from their fair value at the date of acquisition. We classify IPR&D intangible assets acquired in a business combination as an indefinite-lived intangible asset until the completion or abandonment of the associated R&D efforts. Upon completion of the associated R&D efforts, we will determine the useful life and begin amortizing the assets to reflect their use over their remaining lives. Upon permanent abandonment, we write-off the remaining carrying amount of the associated IPR&D intangible asset. We test our IPR&D intangible assets at least annually or when a triggering event occurs that could indicate a potential impairment and we recognize any impairment loss in our consolidated statements of operations.

**Item 7A. Quantitative and Qualitative Disclosures about Market Risk**

We are exposed to market risk from changes in interest rates and foreign currency exchange rates. We may from time to time use derivative financial instruments or other financial instruments to hedge these economic exposures related to foreign currencies. We do not hold or issue financial instruments for trading purposes.

**Interest Rate Risk**

We are subject to interest rate risk in connection with our five-year revolving credit facility, which was amended in December 2024 (as amended, the "2022 Revolving Facility"), which is variable rate indebtedness. Interest rate changes could increase the amount of our interest payments and thus negatively impact our future earnings and cash flows. As of December 31, 2025, there was availability of $750.0 million on the 2022 Revolving Facility. Any increase in the interest rate under the 2022 Revolving Facility may have a negative impact on our future earnings to the extent we have outstanding borrowings under the 2022 Revolving Facility.

**Foreign Currency Risk**

We face exposure to movements in foreign currency exchange rates whenever we, or any of our subsidiaries, enter into transactions with third parties that are denominated in currencies other than our, or that subsidiary's, functional currency. Intercompany transactions between entities that use different functional currencies also expose us to foreign currency risk.

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During the years ended December 31, 2025, 2024 and 2023, the net impact of foreign currency changes on transactions was a loss of $1.0 million, $0.7 million and $0.1 million, respectively. From time to time, we enter into foreign currency forward contracts primarily to reduce the effects of fluctuating foreign currency exchange rates. We may enter into additional foreign currency forward contracts when deemed appropriate. We do not enter into foreign currency forward contracts for speculative or trading purposes.

The Euro and Canadian dollar present the primary currency risk on our earnings. At December 31, 2025, a hypothetical 10% change in value of the U.S. dollar relative to the Euro and Canadian dollar would not have materially affected our financial instruments.

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

**Item 8. Financial Statements and Supplementary Data**

**LANTHEUS HOLDINGS, INC.**

**INDEX TO CONSOLIDATED FINANCIAL STATEMENTS**

---

| | |
|:---|:---|
|  | **Page** |
| [<u>Report of Independent Registered Public Accounting Firm</u>](#report_of_independent_reg) (PCAOB ID No. 34) | 82 |
| [<u>Consolidated Balance Sheets</u>](#consolidated_balance_sheets) | 84 |
| [<u>Consolidated Statements of Operations</u>](#consolidated_statements_of_operations) | 85 |
| [<u>Consolidated Statements of Comprehensive Income</u>](#consolidated_statements_of_comprehensive) | 86 |
| [<u>Consolidated Statements of Changes in Stockholders' Equity</u>](#consolidated_statements_of_changes_in_st) | 87 |
| [<u>Consolidated Statements of Cash Flows</u>](#consolidated_statements_of_cash_flows) | 88 |
| [<u>Notes to Consolidated Financial Statements</u>](#notes_to_consolidated_financial_stat) | 90 |

---

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[**<u>**Table of Contents**</u>**](#toc_page)

**REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM**

To the Stockholders and the Board of Directors of Lantheus Holdings, Inc.

**Opinion on the Financial Statements**

We have audited the accompanying consolidated balance sheets of Lantheus Holdings, Inc. and subsidiaries (the "Company") as of December 31, 2025 and 2024, the related consolidated statements of operations, comprehensive income, changes in stockholders' equity, and cash flows, for each of the three years in the period ended December 31, 2025, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2025, based on criteria established in *Internal Control — Integrated Framework (2013)* issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 26, 2026, expressed an unqualified opinion on the Company's internal control over financial reporting.

**Basis for Opinion**

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company 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 audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the 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 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 financial statements. We believe that our audits provide a reasonable basis for our opinion.

**Critical Audit Matter**

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the 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.

***Revenue — Refer to Note 3 to the financial statements***

*Critical Audit Matter Description*

The Company's product revenue includes revenue earned from the sale of its prostate cancer positron emission tomography ("PET") imaging agent, PYLARIFY. The Company recognizes revenue from PYLARIFY when it transfers control of promised goods to its customers. The Company's principal customers for PYLARIFY sales include hospitals, independent imaging centers and government facilities.

The accounting for PYLARIFY sales involves judgment, particularly as it relates to designing and executing the product distribution processes in a manner that provides the Company reliable information in determining when control of the product is transferred to the customer. For the year ended December 31, 2025, revenue from the sale of PYLARIFY was $989.1 million.

We identified revenue from the Company's PYLARIFY sales as a critical audit matter due to the high volume of transactions and the complexity of the product distribution processes. This required extensive audit effort and an increased level of auditor judgment when performing audit procedures and evaluating the results of those procedures.

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[**<u>**Table of Contents**</u>**](#toc_page)

*How the Critical Audit Matter Was Addressed in the Audit*

Our audit procedures related to the Company's revenue from product sales included the following, among others:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•We tested the effectiveness of internal controls over the recognition of revenue from PYLARIFY sales, including controls over the quantity and price of products shipped and timing of revenue recognition.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•For product shipped by PET manufacturing facilities, we (i) confirmed the relevant information regarding the doses shipped to customers that impact revenue recognition, (ii) performed detail transaction testing for revenue from product sales by making a sample of transactions and agreeing the transaction to the relevant information supporting the ordering and fulfillment of doses and (iii) confirmed selected accounts receivable balances.

---

| |
|:---|
| /s/ Deloitte & Touche LLP |
| Boston, Massachusetts |
| February 26, 2026 |
| We have served as the Company's auditor since 2007. |

---

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[**<u>**Table of Contents**</u>**](#toc_page)

**Lantheus Holdings, Inc.**

**Consolidated Balance Sheets**

(in thousands, except par value)

---

| | | |
|:---|:---|:---|
|  | **December 31,** | **December 31,** |
|  | **2025** | **2024** |
| **Assets** |  |  |
| **Current assets:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash and cash equivalents | $359121 | $912814 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable, net | 358640 | 321258 |
| &nbsp;&nbsp;&nbsp;&nbsp;Inventory, net | 64674 | 68025 |
| &nbsp;&nbsp;&nbsp;&nbsp;Income tax receivable | 15387 | 8177 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other current assets | 21400 | 16359 |
| &nbsp;&nbsp;&nbsp;&nbsp;Assets held for sale | 80742 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Total current assets** | 899964 | 1326633 |
| Investment in equity securities | 42213 | 39489 |
| Property, plant and equipment, net | 163686 | 176798 |
| Intangibles, net | 722779 | 161761 |
| Goodwill | 239517 | 61189 |
| Deferred tax assets, net | 109196 | 170233 |
| Other long-term assets | 50044 | 44237 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total assets** | $2227399 | $1980340 |
| **Liabilities and Stockholders' Equity** |  |  |
| **Current liabilities:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Current portion of long-term debt and other borrowings | $738 | $974 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | 42906 | 34560 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accrued expenses and other current liabilities | 267307 | 204992 |
| &nbsp;&nbsp;&nbsp;&nbsp;Liabilities held for sale | 22468 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Total current liabilities** | 333419 | 240526 |
| Asset retirement obligations | 138 | 23344 |
| Long-term debt and other borrowings, net of current portion | 568678 | 565279 |
| Long-term deferred tax liabilities | 54246 |  |
| Long-term contingent consideration liabilities | 73255 |  |
| Other long-term liabilities | 107866 | 63180 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total liabilities** | 1137602 | 892329 |
| Commitments and contingencies (Note 17) |  |  |
| Stockholders' equity: |  |  |
| Preferred stock ($0.01 par value, 25,000 shares authorized; no shares issued and outstanding) |  |  |
| Common stock ($0.01 par value; 250,000 shares authorized; 71,827 and 70,905 shares issued; 64,586 and 68,450 shares outstanding at December 31, 2025, and December 31, 2024, respectively) | 718 | 709 |
| Additional paid-in capital | 888320 | 817972 |
| Treasury stock at cost; 7,241 shares and 2,455 shares at December 31, 2025 and December 31, 2024, respectively | (477438) | (175000) |
| Retained earnings | 679504 | 445945 |
| Accumulated other comprehensive loss | (1307) | (1615) |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total stockholders' equity** | 1089797 | 1088011 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Total liabilities and stockholders' equity** | $2227399 | $1980340 |

---

The accompanying notes are an integral part of these consolidated financial statements.

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**Lantheus Holdings, Inc.**

**Consolidated Statements of Operations**

(in thousands, except per share data)

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
|  | **2025** | **2024** | **2023** |
| Revenues | $1541609 | $1533910 | $1296429 |
| Cost of goods sold | 599657 | 545619 | 586886 |
| &nbsp;&nbsp;&nbsp;&nbsp;Gross profit | 941952 | 988291 | 709543 |
| Operating expenses |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Sales and marketing | 178691 | 177940 | 141736 |
| &nbsp;&nbsp;&nbsp;&nbsp;General and administrative | 275121 | 193689 | 125458 |
| &nbsp;&nbsp;&nbsp;&nbsp;Research and development | 177308 | 168098 | 77707 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total operating expenses | 631120 | 539727 | 344901 |
| Gain on sale of assets |  | 8415 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Operating income | 310832 | 456979 | 364642 |
| Interest expense | 19749 | 19669 | 20019 |
| Investment in equity securities - unrealized loss | 8617 | 43564 |  |
| Other income, net | (31326) | (37231) | (66320) |
| &nbsp;&nbsp;&nbsp;&nbsp;Income before income taxes | 313792 | 430977 | 410943 |
| Income tax expense | 80233 | 118535 | 84282 |
| Net income | $233559 | $312442 | $326661 |
| Net income per common share: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Basic | $3.46 | $4.52 | $4.79 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Diluted | $3.41 | $4.36 | $4.65 |
| Weighted average common shares outstanding: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Basic | 67489 | 69199 | 68266 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Diluted | 68443 | 71651 | 70239 |

---

The accompanying notes are an integral part of these consolidated financial statements.

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**Lantheus Holdings, Inc.**

**Consolidated Statements of Comprehensive Income**

(in thousands)

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
|  | **2025** | **2024** | **2023** |
| Net income | $233559 | $312442 | $326661 |
| Other comprehensive income (loss): |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Foreign currency translation | 308 | (578) | 222 |
| Comprehensive income | $233867 | $311864 | $326883 |

---

The accompanying notes are an integral part of these consolidated financial statements.

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**Lantheus Holdings, Inc.**

**Consolidated Statements of Changes in Stockholders' Equity**

(in thousands)

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  |  |  |  |  |  |  | **Accumulated** |  |
|  |  |  |  |  | **Additional** | **Retained** | **Other** | **Total** |
|  | **Common Stock** | **Common Stock** | **Treasury Stock** | **Treasury Stock** | **Paid-In** | **(Deficit)** | **Comprehensive** | **Stockholders'** |
|  | **Shares** | **Amount** | **Shares** | **Amount** | **Capital** | **Earnings** | **Income (Loss)** | **Equity** |
| Balance at January 1, 2023 | 68851 | $689 | 1339 | $(75000) | $715875 | $(193158) | $(1259) | $447147 |
| Net income |  |  |  |  |  | 326661 |  | 326661 |
| Other comprehensive income |  |  |  |  |  |  | 222 | 222 |
| Stock option exercises and employee stock plan purchases | 245 | 2 |  |  | 5747 |  |  | 5749 |
| Vesting of restricted stock units | 962 | 10 |  |  | (10) |  |  |  |
| Shares withheld to cover taxes | (195) | (2) |  |  | (14392) |  |  | (14394) |
| Stock-based compensation |  |  |  |  | 50507 |  |  | 50507 |
| Balance at December 31, 2023 | 69863 | $699 | 1339 | $(75000) | $757727 | $133503 | $(1037) | $815892 |
| Net income |  |  |  |  |  | 312442 |  | 312442 |
| Other comprehensive loss |  |  |  |  |  |  | (578) | (578) |
| Stock option exercises and employee stock plan purchases | 257 | 2 |  |  | 6726 |  |  | 6728 |
| Vesting of restricted stock units | 1118 | 11 |  |  | (11) |  |  |  |
| Shares withheld to cover taxes | (333) | (3) |  |  | (22612) |  |  | (22615) |
| Repurchase of common stock, including excise tax |  |  | 1116 | (100000) | (251) |  |  | (100251) |
| Stock-based compensation |  |  |  |  | 76393 |  |  | 76393 |
| Balance at December 31, 2024 | 70905 | $709 | 2455 | $(175000) | $817972 | $445945 | $(1615) | $1088011 |
| Net income |  |  |  |  |  | 233559 |  | 233559 |
| Other comprehensive income |  |  |  |  |  |  | 308 | 308 |
| Stock option exercises and employee stock plan purchases | 220 | 2 |  |  | 10879 |  |  | 10881 |
| Vesting of restricted stock units | 991 | 10 |  |  | (10) |  |  |  |
| Shares withheld to cover taxes | (289) | (3) |  |  | (26335) |  |  | (26338) |
| Repurchase of common stock, including excise tax |  |  | 4786 | (302438) | 251 |  |  | (302187) |
| Stock-based compensation |  |  |  |  | 85563 |  |  | 85563 |
| Balance at December 31, 2025 | 71827 | $718 | 7241 | $(477438) | $888320 | $679504 | $(1307) | $1089797 |

---

The accompanying notes are an integral part of these consolidated financial statements.

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**Lantheus Holdings, Inc.**

**Consolidated Statements of Cash Flows**

(in thousands)

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
|  | **2025** | **2024** | **2023** |
| **Cash flows from operating activities:** |  |  |  |
| Net income | $233559 | $312442 | $326661 |
| Adjustments to reconcile net income to net cash flows from operating activities: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation, amortization and accretion | 70098 | 64624 | 60043 |
| &nbsp;&nbsp;&nbsp;&nbsp;Impairment of long-lived assets |  |  | 138050 |
| &nbsp;&nbsp;&nbsp;&nbsp;Adjustment to the fair value of asset retirement obligation | (4727) |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization of debt-related costs | 4457 | 4296 | 4300 |
| &nbsp;&nbsp;&nbsp;&nbsp;Change in fair value of contingent liabilities | 1379 | (2699) | (9275) |
| &nbsp;&nbsp;&nbsp;&nbsp;Inventory adjustments | 2202 | (904) | 7914 |
| &nbsp;&nbsp;&nbsp;&nbsp;Stock-based compensation | 85563 | 76393 | 50507 |
| &nbsp;&nbsp;&nbsp;&nbsp;Gain on disposal of assets |  | (8415) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Gain on sale of RELISTOR licensed intangible asset | (5000) |  | (51789) |
| &nbsp;&nbsp;&nbsp;&nbsp;Unrealized loss on investment in equity securities | 8617 | 43564 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Charges incurred pursuant to acquired in-process research and development | 11212 | 66000 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Deferred taxes | 21595 | (30029) | (55632) |
| &nbsp;&nbsp;&nbsp;&nbsp;Long-term indemnification receivable |  |  | 3929 |
| &nbsp;&nbsp;&nbsp;&nbsp;Long-term income tax payable and other long-term liabilities | 246 | 5236 | (3103) |
| &nbsp;&nbsp;&nbsp;&nbsp;Other, net | 5174 | 12194 | 4855 |
| Changes in operating assets and liabilities, excluding impact of acquisitions: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable | (17888) | (37685) | (68637) |
| &nbsp;&nbsp;&nbsp;&nbsp;Inventory | (9366) | (2670) | (36220) |
| &nbsp;&nbsp;&nbsp;&nbsp;Other current and noncurrent assets | (5406) | 4440 | (2418) |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | (2492) | (8804) | 17189 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accrued expenses and other current and long-term liabilities | (9082) | 46767 | (81114) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash provided by operating activities | 390141 | 544750 | 305260 |
| **Cash flows from investing activities:** |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Capital expenditures | (36089) | (51625) | (46555) |
| &nbsp;&nbsp;&nbsp;&nbsp;Acquisition of in-process research and development | (5413) |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Proceeds from sale of assets |  | 17767 | 97839 |
| &nbsp;&nbsp;&nbsp;&nbsp;Acquisition of assets, net |  | (80911) | (45345) |
| &nbsp;&nbsp;&nbsp;&nbsp;Acquisition of Evergreen, net of cash acquired | (268933) |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Acquisition of Life Molecular, net of cash acquired | (306733) |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Purchases of investment in equity securities | (10000) | (83246) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Acquisition of exclusive license option |  | (28000) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash (used in) provided by investing activities | (627168) | (226015) | 5939 |
| **Cash flows from financing activities:** |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Payments of long-term debt and other borrowings | (1110) | (318) | (717) |
| &nbsp;&nbsp;&nbsp;&nbsp;Deferred financing costs |  | (2331) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Proceeds from stock option exercises | 7154 | 3278 | 3816 |
| &nbsp;&nbsp;&nbsp;&nbsp;Contingent value rights settlement |  |  | (3700) |
| &nbsp;&nbsp;&nbsp;&nbsp;Proceeds from employee stock purchase plan | 3727 | 3450 | 1933 |
| &nbsp;&nbsp;&nbsp;&nbsp;Payments for minimum statutory tax withholding related to net share settlement of equity awards | (26338) | (22615) | (14394) |
| &nbsp;&nbsp;&nbsp;&nbsp;Repurchase of common stock | (300017) | (100000) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash used in financing activities | (316584) | (118536) | (13062) |
| Effect of exchange rate changes on cash, cash equivalents and restricted cash | (49) | (998) | (93) |
| Net (decrease) increase in cash, cash equivalents and restricted cash | (553660) | 199201 | 298044 |
| Cash, cash equivalents and restricted cash, beginning of period | 914486 | 715285 | 417241 |
| Cash, cash equivalents and restricted cash, end of period | $360826 | $914486 | $715285 |

---

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**Lantheus Holdings, Inc.**

**Consolidated Statements of Cash Flows (Continued)**

(in thousands)

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
|  | **2025** | **2024** | **2023** |
| **Reconciliation to amounts within the consolidated balance sheets** |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash and cash equivalents | $359121 | $912814 | $713656 |
| &nbsp;&nbsp;&nbsp;&nbsp;Restricted cash included in other long-term assets | 1705 | 1672 | 1629 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash, cash equivalents and restricted cash at end of period | $360826 | $914486 | $715285 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
|  | **2025** | **2024** | **2023** |
| **Supplemental disclosure of cash flow information** |  |  |  |
| Cash paid during the period for: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest | $15094 | $15094 | $15387 |
| &nbsp;&nbsp;&nbsp;&nbsp;Income taxes , net of refunds of $28, $2,688 and $25, respectively | $69037 | $153815 | $151579 |
| **Schedule of non-cash investing and financing activities** |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions of property, plant and equipment included in liabilities | $3445 | $5058 | $6978 |
| &nbsp;&nbsp;&nbsp;&nbsp;In-process research and development included in liabilities | $5799 | $— | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;Contingent consideration liabilities related to acquisitions | $96842 | $— | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;Lease liability settled through transfer of lease | $— | $762 | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;Modification of lease agreement | $5789 | $— | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;Right-of-use asset obtained in exchange for operating lease liabilities | $2770 | $63 | $29396 |
| &nbsp;&nbsp;&nbsp;&nbsp;Right-of-use asset obtained in exchange for finance lease obligation | $711 | $514 | $1581 |
| &nbsp;&nbsp;&nbsp;&nbsp;Excise tax payable on net common stock repurchases | $2421 | $251 | $— |

---

The accompanying notes are an integral part of these consolidated financial statements.

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[**<u>**Table of Contents**</u>**](#toc_page)

**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements**

**1. Description of Business**

The Company develops, manufactures and commercializes innovative diagnostic and therapeutic products that assist clinicians in the diagnosis and treatment of cancer, heart disease and other diseases.

The Company's commercial products are used by cardiologists, internal medicine physicians, neurologists, nuclear medicine physicians, oncologists, radiologists, sonographers, technologists, and urologists working in a variety of clinical settings. The Company believes that its diagnostic products provide information that enables healthcare providers to better detect and characterize, or rule out, disease, with the potential to achieve better patient outcomes, reduce patient risk, and limit overall costs.

The Company produces and markets its products throughout the United States (the "United States" or the "U.S."), selling primarily to hospitals, independent imaging centers and government facilities. The Company sells its products outside the United States through a combination of direct distribution in Canada, third-party distribution relationships in Europe, Canada, Australia, Asia-Pacific, Central America and South America and by licensing exclusive rights to develop and commercialize certain products outside the United States.

Sales of PYLARIFY are generated in the United States through an internal PYLARIFY sales team, as well as a sales team at some of the Company's positron emission tomography ("PET") manufacturing facilities ("PMF") partners. Sales of DEFINITY are generated in the United States through an internal DEFINITY sales team. Sales of Neuraceq are generated in the United States through an internal Neuraceq sales team and in European markets through third-party distributors. Research revenue is derived from existing partnerships with pharmaceutical companies and academic institutions that use our products and product candidates in clinical trials and includes milestone and dose-related payments. A small portion of the Company's nuclear imaging product sales in the United States are generated through the Company's internal sales force to hospitals and clinics that maintain their own in-house radiopharmaceutical preparation capabilities.

In Europe, Australia, Asia-Pacific, Central America and South America, the Company generally relies on third-party distributors to market, sell and distribute its nuclear imaging and ultrasound enhancing agent products, either on a country-by-country basis or on a multi-country regional basis. The Company is headquartered in Massachusetts, with offices in New Jersey, Canada, Germany, Switzerland, Sweden and the United Kingdom.

**2. Summary of Significant Accounting Policies**

***Basis of Presentation and Principles of Consolidation***

The accompanying consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States ("U.S. GAAP"). The consolidated financial statements include the accounts of the Company and its direct and indirect wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.

***Use of Estimates***

The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. The estimates reflected in the Company's consolidated financial statements include, but are not limited to, certain judgments regarding revenue recognition, goodwill, tangible and intangible asset valuation and estimated useful lives, inventory valuation, asset retirement obligations, contingent assets and liabilities, income tax liabilities and related indemnification receivable, deferred tax assets and liabilities and accrued expenses. Actual results could materially differ from those estimates or assumptions.

***Revenue Recognition***

The Company recognizes revenue when it transfers control of promised goods or services to its customers in an amount that reflects the consideration to which the Company expects to be entitled to in exchange for those goods and services. See Note 3, "*Revenue from Contracts with Customers,"* to these consolidated financial statements, for further discussion on revenues.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

***Accounts Receivable, Net***

Accounts receivable have been reduced by an allowance for credit losses. The allowance for credit losses represents the Company's best estimate of the amount of probable credit losses in our accounts receivable. The Company's allowance is based on a number of factors, including an evaluation of customer credit worthiness, the age of the outstanding receivable, economic trends, historical experience and other information over the payment periods. The Company reviews and adjusts the allowance for expected credit losses on a quarterly basis. Accounts receivable balances are written off against the allowance for expected credit losses when the Company determines that the balances are not recoverable. Allowance for credit losses was $9.5 million and $7.8 million at December 31, 2025 and 2024, respectively.

***Income Taxes***

The Company accounts for income taxes using an asset and liability approach. Income tax expense represents income taxes paid or payable for the current year plus the change in deferred taxes during the year. Deferred taxes result from differences between the financial and tax bases of the Company's assets and liabilities. Deferred tax assets and liabilities are measured using the currently enacted tax rates that apply to taxable income in effect for the years in which those tax attributes are expected to be recovered or paid, and are adjusted for changes in tax rates and tax laws when such changes are enacted.

The Company recognizes deferred tax assets to the extent that the Company believes that these assets are more-likely-than-not to be realized. Valuation allowances are recorded to reduce deferred tax assets when it is more-likely-than-not that the future tax benefit will not be realized. The assessment of whether or not a valuation allowance is required involves weighing both positive and negative evidence, including both historical and prospective information, with greater weight given to evidence that is objectively verifiable. A history of recent losses is negative evidence that is difficult to overcome with positive evidence. In evaluating prospective information there are four sources of taxable income: reversals of taxable temporary differences, items that can be carried back to prior tax years (such as net operating losses), pre-tax income, and prudent and feasible tax planning strategies. Adjustments to the deferred tax valuation allowances are made in the period when those assessments are made.

The Company accounts for uncertain tax positions using a two-step recognition threshold and measurement analysis method to determine the financial statement impact of uncertain tax positions taken or expected to be taken in a tax return. Differences between tax positions taken in a tax return and amounts recognized in the financial statements are recorded as adjustments to other long-term assets and liabilities, or adjustments to deferred taxes, or both. The Company records the related interest and penalties to income tax expense.

***Net Income per Common Share***

Basic net income per share is computed using the weighted average number of shares of common stock outstanding during the period. Diluted net income per share is computed using the sum of the weighted average number of shares of common stock outstanding during the period and, if dilutive, the weighted average number of potential shares of common stock, including the assumed exercise of stock options, unvested restricted stock and total shareholder return awards. The Company applies the two-class method to calculate its basic and diluted net income per share attributable to common stockholders. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that otherwise would have been available to common stockholders. During periods in which the Company incurs net losses, both basic and diluted net loss per common share are calculated by dividing the net loss by the weighted-average shares of common stock outstanding and potentially dilutive securities are excluded from the calculation because their effect would be antidilutive.

***Cash and Cash Equivalents***

Cash and cash equivalents include savings deposits, certificates of deposit and money market funds that have original maturities of three months or less.

***Restricted Cash***

Restricted cash as of December 31, 2025 and 2024, represents primarily collateral for a letter of credit securing a lease obligation and a security deposit. The Company believes the carrying value of these assets approximates fair value.

***Concentration of Risks and Limited Suppliers***

Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of trade accounts receivable. The Company periodically reviews its accounts receivable for collectability and estimates the allowance for credit losses based on an evaluation of customer credit worthiness, the age of the outstanding receivable, economic trends, historical experience and other information over the payment periods. The Company sells primarily to hospitals, independent diagnostic testing facilities, and radiopharmacies.

As of December 31, 2025 and 2024, no customer accounted for greater than 10% of accounts receivable, net. No customer accounted for greater than 10% of revenues for the years ended December 31, 2025, 2024 and 2023.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

The Company relies on certain materials used in its development and manufacturing processes, some of which are procured from only one or a few sources. The failure of one of these suppliers to deliver on schedule could delay or interrupt the manufacturing or commercialization process and would adversely affect the Company's operating results. In addition, a disruption in the commercial supply of, or a significant increase in the cost of one of the Company's materials from these sources could have a material adverse effect on the Company's business, financial condition, results of operations and cash flows.

The Company currently relies on Jubilant HollisterStier ("JHS") as its significant manufacturer of DEFINITY and relied on JHS as its sole source manufacturer of NEUROLITE, Cardiolite and evacuation vials for TechneLite prior to the sale of such SPECT products to SHINE on January 1, 2026. Through December 31, 2025, the Company had Molybdenum-99 supply agreements with Institute for Radioelements of Belgium, NTP Radioisotopes and its subcontractor Australian Nuclear Science and Technology Organisation.

The following table sets forth revenues for each of the Company's products representing 10% or more of revenues:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
|  | **2025** | **2024** | **2023** |
| PYLARIFY | 64.2% | 69.0% | 65.7% |
| DEFINITY | 21.4% | 20.7% | 21.6% |

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***Inventory, Net***

Inventory includes material, direct labor and related manufacturing overhead and is stated at the lower of cost and net realizable value on a first-in, first-out basis. The Company records inventory when the Company takes title to the product. The majority of the value of the inventory relates to non-radioactive products. With respect to the Company's products that are radiopharmaceuticals, due to the limited shelf life of such products, they are generally not held as finished goods.

The Company assesses the recoverability of inventory to determine whether adjustments for excess and obsolete inventory are required. Inventory that is in excess of future requirements is written down to its estimated net realizable value based on product shelf life, forecasted demand and other factors.

Inventory costs associated with product that has not yet received regulatory approval are capitalized if the Company believes there is probable future commercial use of the product and future economic benefits of the asset. If future commercial use of the product is not probable, then inventory costs associated with such product are expensed as incurred. As of December 31, 2025, the Company had $0.6 million of such product costs included in inventory related to PYLARIFY that have been purchased to support the new formulation of our PSMA PET imaging agent, which is awaiting regulatory approval. The Company had no inventory pending regulatory approval as of December 31, 2024.

***Property, Plant and Equipment, Net***

Property, plant and equipment are stated at cost. Replacements of major units of property are capitalized, and replaced properties and equipment are retired. Replacements of minor components of property and repair and maintenance costs are charged to expense as incurred. Certain costs to obtain or develop computer software are capitalized and amortized over the estimated useful life of the software. Depreciation and amortization are computed on a straight-line basis over the estimated useful lives of the related assets and recorded in costs of goods sold and operating expenses in the associated functional expense category which utilizes the associated asset. The estimated useful lives of the major classes of depreciable assets are as follows:

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| | |
|:---|:---|
| **Class** | **Range of Estimated Useful Lives** |
| Buildings | 10 - 50 years |
| Land improvements | 15 - 40 years |
| Machinery and equipment | 3 - 15 years |
| Furniture and fixtures | 15 years |
| Leasehold improvements | Lesser of lease term or 15 years |
| Computer software | 3 - 5 years |

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Upon retirement or other disposal of property, plant and equipment, the cost and related amount of accumulated depreciation are removed from the asset and accumulated depreciation accounts, respectively. The difference, if any, between the net asset value and the proceeds is included in operating expenses in the accompanying consolidated statements of operations.

Included within machinery and equipment are spare parts. Spare parts include replacement parts relating to plant & equipment and are either recognized as an expense when consumed or reclassified and capitalized as part of the related asset and depreciated over the remaining useful life of the related asset.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

***Assets Held for Sale***

The Company classifies an asset as held for sale when management, having the authority to approve the action, commits to a plan to sell the asset, the sale is probable within one year and the asset is available for immediate sale in its present condition. The Company also considers whether an active program to locate a buyer has been initiated, whether the asset is marketed actively for sale at a price that is reasonable in relation to its current fair value and whether actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn. The Company initially measures an asset that is classified as held for sale at the lower of its (i) carrying amount or (ii) fair value less costs to sell. Any loss resulting from this measurement is recognized in the period in which the held for sale criteria are met. Conversely, gains are not recognized until the date of sale. The Company assesses the fair value of an asset less costs to sell each reporting period that the asset remains classified as held for sale and reports any subsequent changes as an adjustment to the carrying amount of the asset, as long as the new carrying amount does not exceed the carrying amount of the asset at the time it was initially classified as held for sale. Assets are not depreciated or amortized while they are classified as held for sale.

***Business Combinations***

The Company accounts for business combinations using the acquisition method of accounting. The Company recognizes the assets acquired and liabilities assumed in business combinations on the basis of their fair values at the date of acquisition using its best estimates and assumptions. The Company assesses the fair value of assets acquired, including intangible assets, and liabilities assumed using a variety of methods. Each asset acquired and liability assumed is measured at fair value from the perspective of a market participant. The Company allocates the purchase price based on the relative fair value the assets acquired and liabilities assumed. The method used to estimate the fair values of intangible assets incorporates significant assumptions regarding the estimates a market participant would make in order to evaluate an asset, including a market participant's use of the asset and the appropriate discount rates. Acquired in-process research and development ("IPR&D") is recognized at fair value and initially characterized as an indefinite-lived intangible asset, irrespective of whether the acquired IPR&D has an alternative future use. Any excess purchase price over the fair value of the net tangible and intangible assets acquired is allocated to goodwill. Transaction costs and restructuring costs associated with a business combination are expensed as incurred.

During the measurement period, which extends no later than one year from the acquisition date, the Company may record certain adjustments to the carrying value of the assets acquired and liabilities assumed with the corresponding offset to goodwill. After the measurement period, all adjustments are recorded in the consolidated statements of operations as operating expenses or income.

***Goodwill***

Goodwill is not amortized but is instead tested for impairment at least annually and whenever events or circumstances indicate that it is more likely than not that it may be impaired. The Company has elected to perform the annual test for goodwill impairment as of October 31st of each year.

In performing the Company's annual assessment, the Company is permitted to first perform a qualitative test and if necessary, perform a quantitative test. If the Company is required to perform the quantitative impairment test of goodwill, the Company compares the fair value of a reporting unit to its carrying value. If the reporting unit's carrying value exceeds its fair value, the Company would record an impairment loss to the extent that the carrying value of goodwill exceeds its implied fair value. The Company estimates the fair value of its reporting units using discounted cash flow or other valuation models, such as comparative transactions and market multiples. The Company performed a qualitative assessment and did not recognize any goodwill impairment charges during the years ended December 31, 2025, 2024 or 2023.

***Intangible and Long-Lived Assets***

The Company tests intangible and long-lived assets for recoverability whenever events or changes in circumstances suggest that the carrying value of an asset or group of assets may not be recoverable. The Company measures the recoverability of assets to be held and used by comparing the carrying amount of the asset to future undiscounted net cash flows expected to be generated by the asset. If those assets are considered to be impaired, the impairment equals the amount by which the carrying amount of the assets exceeds the fair value of the assets. Any impairments are recorded as permanent reductions in the carrying amount of the assets. See Note 7, *"Property, Plant and Equipment, Net"* to these consolidated financial statements for further details on impairment. Long-lived assets, other than goodwill and other intangible assets that are held for sale are recorded at the lower of the carrying value or the fair market value less the estimated cost to sell.

Intangible assets, consisting of patents, trademarks, customer relationships, a currently marketed product, licenses and developed technology related to the Company's products are amortized in a method equivalent to the estimated utilization of the economic benefit of the asset.

Costs of IPR&D intangible assets acquired as part of an asset acquisition that have no alternative future use are expensed when incurred. Milestone payments made after regulatory approval are capitalized as an intangible asset and amortized over an

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

estimated useful life of the product. Cash payments related to acquired IPR&D intangible assets are reflected as an investing cash flow in the Company's consolidated statement of cash flows.

The Company's IPR&D intangible assets include intangible assets acquired in a business combination that are used in research and development (R&D) activities but have not yet reached technological feasibility, regardless of whether they have alternative future use. The primary basis for determining the technological feasibility or completion of these projects is obtaining regulatory approval to market the underlying products in an applicable geographic region. Because obtaining regulatory approval can include significant risks and uncertainties, the eventual realized value of the acquired IPR&D projects may vary from their fair value at the date of acquisition. The Company classifies IPR&D intangible assets acquired in a business combination as an indefinite-lived intangible asset until the completion or abandonment of the associated R&D efforts. Upon completion of the associated R&D efforts, the Company will determine the useful life and begin amortizing the assets to reflect their use over their remaining lives. Upon permanent abandonment, the Company writes-off the remaining carrying amount of the associated IPR&D intangible asset. IPR&D intangible assets are tested at least annually as of October 31st or when a triggering event occurs that could indicate a potential impairment and any impairment loss is recognized in the Company's consolidated statements of operations. See Note 10, *"Intangibles, Net and Goodwill"* to these consolidated financial statements for further details on impairment.

***Contingencies***

In the normal course of business, the Company is subject to loss contingencies, such as legal proceedings and claims arising out of its business, that cover a wide range of matters, including, among others, product and environmental liability. The Company records accruals for those loss contingencies when it is probable that a liability will be incurred and the amount of loss can be reasonably estimated. The Company does not recognize gain contingencies until realized.

***Convertible Notes***

The Company evaluates convertible notes to determine if those contracts or embedded components of those contracts qualify as derivatives to be separately accounted for. The change in fair value of any separately recognized derivative is recorded in the consolidated statement of operations as other income or expense. Upon conversion, exercise or cancellation of a derivative instrument, the instrument is marked to fair value at the date of conversion, exercise or cancellation.

***Investments***

Equity investments with readily determinable fair values for which the Company does not have significant influence over the investee are measured at fair value on a recurring basis. Equity investments without readily determinable fair values for which the Company does not have significant influence over the investee are measured at cost with adjustments for observable changes in price or impairments (referred to as the measurement alternative). For equity investments for which the Company does not have significant influence over the investee, changes in the value of unsold equity investments are recorded in investment in equity securities – unrealized (gain) loss in the Company's consolidated statements of operations. Equity investments for which the Company has significant influence over the investee are measured using the equity method unless the Company elects to apply the fair value option to account for the investment.

***Fair Values of Financial Instruments***

The estimated fair values of the Company's financial instruments, including its cash and cash equivalents, accounts receivable, accounts payable and accrued expenses approximate the carrying values of these instruments due to their short term nature. The Company's long-term debt has triggering events that would impact the fair value of the instruments. The Company determined that no triggering event has occurred during the years ended December 31, 2025 and 2024. As of December 31, 2025 and 2024, the fair value of the Company's convertible debt was estimated to be approximately $659.5 million and $765.3 million, respectively, based on quoted market prices of these instruments and was classified as a Level 1 measurement within the fair value hierarchy. For more information on the fair value, see Note 4, *"Fair Value of Financial Instruments"* to these consolidated financial statements.

***Contingent Consideration Liabilities***

The Company's acquisitions accounted for as asset acquisitions may include contingent consideration payments to be made for development, regulatory, and sales-based milestones. The Company first assesses whether such contingent consideration payments meet the definition of a derivative. Contingent consideration payments in an asset acquisition not required to be accounted for as derivatives are recognized when the contingency is resolved, and the consideration is paid or becomes payable. Contingent consideration payments required to be accounted for as derivatives are recorded at fair value on the date of the acquisition and are subsequently remeasured to fair value at each reporting date. Upon recognition of the contingent consideration payment, the amount is included in the cost of the acquired asset or group of assets.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

The Company's acquisitions accounted for as business combinations include contingent consideration payments to be made for development, regulatory, and sales-based milestones, as well as potential payments to be made pursuant to an assumed contract. The estimated fair value of contingent consideration liabilities are initially measured and recorded on the acquisition date. The contingent consideration liabilities are considered to be Level 3 instruments and are reviewed and updated quarterly, or whenever events or circumstances occur that indicate a change in fair value. The contingent consideration liabilities are recorded at fair value at the end of each reporting period with changes in estimated fair values recorded in general and administrative expenses in the consolidated statements of operations.

The estimated fair value is determined based on probability adjusted discounted cash flow ("DCF") and Monte Carlo simulation models that include significant estimates and assumptions pertaining to regulatory and commercialization events and sales targets. Significant changes in any of these inputs could result in a significantly higher or lower fair value measurement of the contingent consideration liabilities.

***Derivative Instruments*** 

The Company has used interest rate swaps to reduce the variability in cash flows associated with a portion of the Company's forecasted interest payments on its variable rate debt. To qualify for hedge accounting, the hedging instrument must be highly effective at reducing the risk from the exposure being hedged. Further, the Company must formally document the hedging relationship at inception and, on at least a quarterly basis, continually reevaluate the relationship to ensure it remains highly effective throughout the life of the hedge. The Company does not enter into derivative financial instruments for speculative or trading purposes.

***Advertising and Promotion Costs***

Advertising and promotion costs are expensed as incurred. During the years ended December 31, 2025, 2024 and 2023, the Company incurred $16.4 million, $29.7 million and $26.0 million, respectively in advertising and promotion costs, which are included in sales and marketing in the consolidated statements of operations.

***Research and Development***

Research and development costs are expensed as incurred and relate primarily to the development of new products to add to the Company's portfolio and costs related to its medical affairs and medical information functions. Nonrefundable advance payments for goods or services that will be used or rendered for future R&D activities are deferred and recognized as an expense as the goods are delivered or the related services are performed.

***Foreign Currency***

The consolidated statements of operations of the Company's foreign subsidiaries are translated into U.S. dollars using weighted-average exchange rates. The net assets of the Company's foreign subsidiaries are translated into U.S. dollars using the end of period exchange rates. The impact from translating the net assets of these subsidiaries at changing rates are recorded in the foreign currency translation adjustment account, which is included in accumulated other comprehensive loss in the consolidated balance sheets.

Remeasurement of the Company's foreign currency denominated transactions are included in net income. Transaction gains and losses are reported as a component of other income, net in the consolidated statements of operations.

***Stock-Based Compensation***

The Company's stock-based compensation cost is measured at the grant date of the stock-based award based on the fair value of the award and is recognized as expense, net of estimated forfeitures, over the requisite service period, which generally represents the vesting period. The Company estimates the fair value of each stock-based award on its measurement date using either the current market price of the stock, the Black-Scholes option valuation model or the Monte Carlo simulation valuation model, whichever is most appropriate. The Black-Scholes and Monte Carlo simulation valuation models incorporate assumptions such as stock price volatility, the expected life of options or awards, a risk-free interest rate and dividend yield. The Company estimates forfeitures at the time of grant and revises those estimates in subsequent periods if actual forfeitures differ from those estimates. The Company uses historical data to estimate forfeitures and records stock-based compensation expense only for those awards that are expected to vest.

Expected volatility is based on the historical volatility of the Company's stock price. The risk-free interest rates are based on quoted U.S. Treasury rates for securities with maturities approximating the awards' expected lives. Expected lives are principally based on the Company's historical exercise experience with previously issued awards. The expected dividend yield is zero as the Company has never paid dividends and does not currently anticipate paying any in the foreseeable future.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

Expense for performance restricted stock awards is recognized based upon the fair value of the awards on the date of grant and the number of shares expected to vest based on the terms of the underlying award agreement and the requisite service period(s).

***Other Income, Net***

Other income, net consisted of the following:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| Foreign currency loss | $1006 | $733 | $21 |
| Tax indemnification expense, net | 734 | (106) | 4943 |
| Interest income | (23391) | (36838) | (19638) |
| Gain on sale of RELISTOR licensed intangible asset<sup>(1)</sup> | (5000) |  | (51789) |
| Revision of estimated decommissioning costs related to asset retirement obligation<sup>(2)</sup> | (4727) |  |  |
| Other | 52 | (1020) | 143 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total other income, net | $(31326) | $(37231) | $(66320) |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)$5.0 million recognized in December 2025 related to the achievement of a 2025 net sales milestone for RELISTOR as a part of the purchase price consideration outlined in the 2023 Healthcare Royalty Management LLC Royalty Interest agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)See Note 9, *"Asset Retirement Obligations,"* for more information.

***Comprehensive Income***

Comprehensive income consists of net income and other gains and losses affecting stockholders' equity that, under U.S. GAAP, are excluded from net income. For the Company, other comprehensive income consists of foreign currency translation gains and losses. The accumulated other comprehensive loss balance consists entirely of foreign currency translation gains and losses.

***Asset Retirement Obligations***

The Company's compliance with federal, state, local and foreign environmental laws and regulations may require it to remove or mitigate the effects of the disposal or release of chemical substances in jurisdictions where it does business or maintains properties. The Company establishes accruals when those costs are legally obligated and can be reasonably estimated. Accrual amounts are estimated, which may include the assistance of third-party environmental specialists, and are based on currently available information, regulatory requirements, remediation strategies, historical experience, the relative shares of the total remediation costs, a relevant discount rate, and the time periods of when estimated costs can be reasonably predicted. Changes in these assumptions could impact the Company's future reported results.

The Company has production facilities which manufacture and process radioactive materials at its sites in North Billerica, Massachusetts and, through March 1, 2024, Somerset, New Jersey. The Company considers its legal obligation to remediate its facilities upon a decommissioning of its radioactive-related operations as an asset retirement obligation. The fair value of a liability for asset retirement obligations is recognized in the period in which the liability is incurred. As of December 31, 2025, the Company estimates the decommissioning and decontaminating costs for all their manufacturing sites to be approximately $20.4 million. The liability is measured at the present value of the obligation expected to be incurred and is adjusted in subsequent periods as accretion expense is recorded. The corresponding asset retirement costs are capitalized as part of the carrying values of the related long-lived assets and depreciated over the assets' useful lives.

The Company has identified conditional asset retirement obligations related to the future removal and disposal of asbestos contained in certain of the buildings located on the Company's North Billerica campus. The Company believes the asbestos is appropriately contained and it is compliant with all applicable environmental regulations. If these properties undergo major renovations or are demolished, certain environmental regulations are in place, which specify the manner in which asbestos must be handled and disposed. The Company is required to record the fair value of these conditional liabilities if they can be reasonably estimated. As of December 31, 2025 and 2024, sufficient information was not available to estimate a liability for such conditional asset retirement obligations as the obligations to remove the asbestos from these properties have indeterminable settlement dates. As such, no liability for conditional asset retirement obligations has been recorded in the accompanying consolidated balance sheets as of December 31, 2025 and 2024.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

***Self-Insurance Reserves***

The Company's consolidated balance sheets at December 31, 2025 and 2024 include $3.5 million and $2.8 million of accrued liabilities associated with employee medical costs that are retained by the Company, respectively. The Company estimates the required liability of those claims on an undiscounted basis based upon various assumptions which include, but are not limited to, the Company's historical loss experience and projected loss development factors. The required liability is also subject to adjustment in the future based upon changes in claims experience, including changes in the number of incidents (frequency) and change in the ultimate cost per incident (severity).

***Leases***

In accordance with Accounting Standards Codification ("ASC*")* 842, "*Leases*," the Company determines if an arrangement is or contains a lease at inception. The Company has leases for vehicles, corporate offices and certain equipment. A contract is or contains a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. The Company classifies leases at the lease commencement date as operating or finance leases and records a right-of-use asset and a lease liability on the consolidated balance sheets for all leases with an initial lease term of greater than twelve months. Leases with an initial term of twelve months or less are not recorded on the balance sheets, but payments are recognized as expense on a straight-line basis over the lease term. The Company has elected not to record a right-of-use asset or lease liability for leases with terms of twelve months or less.

A lease qualifies as a finance lease if any of the following criteria are met at the inception of the lease: (i) there is a transfer of ownership of the leased asset to the Company by the end of the lease term, (ii) the Company holds an option to purchase the leased asset that it is reasonably certain to exercise, (iii) the lease term is for a major part of the remaining economic life of the leased asset, (iv) the present value of the sum of lease payments equals or exceeds substantially all of the fair value of the leased asset, or (v) the nature of the leased asset is specialized to the point that it is expected to provide the lessor no alternative use at the end of the lease term.

Finance and operating lease assets and liabilities are recognized at the lease commencement date based on the present value of the lease payments over the lease term using the discount rate implicit in the lease. If the rate implicit is not readily determinable, the Company utilizes an estimate of its incremental borrowing rate based upon the available information at the lease commencement date, which may include comparing interest rates in the market for similar borrowings with comparable credit quality of the Company. Operating lease right-of-use ("ROU") assets are further adjusted for prepaid or accrued lease payments. Operating lease payments are expensed using the straight-line method as an operating expense over the lease term. The Company's lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Finance lease assets are amortized to depreciation expense using the straight-line method over the shorter of the useful life of the related asset or the lease term. Finance lease payments are bifurcated into (i) a portion that is recorded as imputed interest expense and (ii) a portion that reduces the finance liability associated with the lease.

ROU assets and lease liabilities are reassessed and remeasured when amendments to the terms of the lease agreement require reassessment and remeasurement of the lease payments and other inputs to the calculation of ROU assets and lease liabilities. The Company accounts for remeasurements and modifications to lease liabilities using the present value of remaining lease payments and estimated incremental borrowing rate at the date of remeasurement. The adjustment to the lease liability is recognized as a gain or loss in operating expenses, or as an adjustment to the ROU asset, as appropriate, based on the terms and conditions within the lease that are amended.

***Recent Accounting Pronouncements***

The Company has considered all new accounting standards issued by the Financial Accounting Standards Board ("FASB").

*Accounting Pronouncements Adopted During the Period*

In December 2023, the FASB issued Accounting Standards Update ("ASU") 2023-09, *"Income Taxes (Topic 740): Improvements to Income Tax Disclosures*,*"* which requires enhanced income tax disclosures, including specific categories and disaggregation of information in the effective tax rate reconciliation, disaggregated information related to income taxes paid, income or loss from continuing operations before income tax expense or benefit, and income tax expense or benefit from continuing operations. The requirements of the ASU are effective for annual periods beginning after December 15, 2024, with early adoption permitted. The Company adopted ASU 2023-09 prospectively and the disclosures included in this Annual Report on Form 10-K ("Form 10-K") reflect the disclosures required under ASU 2023-09. See Note 5, *"Income Taxes,"* to these consolidated financial statements for more information.

*Accounting Pronouncements Not Yet Adopted*

In December 2025, the FASB issued ASU 2025-11, *"Interim Reporting (Topic 270) Narrow-Scope Improvements,"* which clarifies that the interim reporting requirements in Topic 270 apply to all entities that issue interim financial statements prepared in accordance with U.S. GAAP and consolidates such requirements within Topic 270. The amendments provide a comprehensive

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

list within Topic 270 of required interim disclosures, establishes a principle requiring disclosure of events or changes occurring after the end of the most recent annual reporting period that have a material impact on interim results and clarifies the form and content requirements applicable to interim financial statements. The requirements of ASU 2025-11 are effective for interim reporting periods within annual reporting periods beginning after December 15, 2027 (for the Company's Form 10-Q for the three months ending March 31, 2028). The Company is currently in the process of evaluating the effects of this pronouncement on its consolidated financial statements and related disclosures.

In September 2025, the FASB issued ASU 2025-06, *"Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software,"* which simplifies the capitalization guidance by removing all references to software development project stages so that the guidance is neutral to different software development methods. Entities will now capitalize costs associated with internal-use software only when management has authorized and committed funding, and it is probable that the project will be completed and the software will be used to perform its intended function. ASU 2025-06 is effective for interim and annual periods beginning after December 15, 2027, with early adoption permitted. The Company is currently in the process of evaluating the effects of this pronouncement on its consolidated financial statements and related disclosures.

In July 2025, the FASB issued ASU 2025-05, *"Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets,"* which provides a practical expedient related to the estimation of expected credit losses for accounts receivable and current contract assets that arise from transactions accounted for under ASC 606, *"Revenue Recognition."* ASU 2025-05 requires an entity to disclose whether it has elected to use the practical expedient. An entity that makes the accounting policy election is required to disclose the date through which subsequent cash collections are evaluated. The requirements of ASU 2025-05 are effective for annual periods beginning after December 15, 2025, and interim periods beginning in the first quarter of 2026. Early adoption is permitted in both interim and annual reporting periods in which financial statements have not yet been issued or made available for issuance. The Company is currently in the process of evaluating the effects of this pronouncement and believes that the adoption will not have a material impact on its consolidated financial statements and related disclosures.

In November 2024, the FASB issued ASU 2024-04, "*Debt - Debt with Conversion and Other Options (Subtopic 470-20),"* which clarifies the requirements for determining whether certain settlements of convertible debt instruments should be accounted for as an induced conversion rather than as extinguishment of debt. The requirements of ASU 2024-04 are effective for the annual periods beginning after December 15, 2025, including interim periods within those fiscal years. Early adoption is permitted. For the Company, the requirements under ASU 2024-04 will be effective for its Form 10-Q for the first quarter of 2026. The adoption of ASU 2024-04 is not expected to have a material impact on the Company's consolidated financial statements and related disclosures in 2026.

In November 2024, the FASB issued ASU 2024-03, *"Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40),"* and in January 2025, the FASB issued ASU 2025-01, *"Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date."* ASU 2024-03 requires additional income statement disclosures, including the disaggregation of specific categories of expenses underlying the line items presented on the income statement. Additionally, ASU 2024-03 requires enhanced disclosure of selling expenses. As clarified by ASU 2025-01, the requirements of the guidance are effective for annual periods beginning after December 15, 2026 and interim periods within fiscal years beginning after December 15, 2027. For the Company, annual reporting requirements under ASU 2024-03 will be effective for its Form 10-K for the year ending December 31, 2027 and interim reporting requirements will be effective beginning in the first quarter of 2028. Early adoption is permitted and the amendments should be applied on a prospective basis, however retrospective application is permitted. The Company is currently in the process of evaluating the impact of this pronouncement on its consolidated financial statements and related disclosures.

**3. Revenue from Contracts with Customers**

***Revenue Recognition***

Revenue is recognized when a customer obtains control of promised goods or services. The amount of revenue recognized reflects the consideration to which the Company expects to be entitled to receive in exchange for these goods or services. To achieve this core principle, the Company applies the following five steps: (1) identify the contracts with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract; and (5) recognize revenue when (or as) the Company satisfies a performance obligation.

***Disaggregation of Revenue***

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

The following table summarizes revenue by revenue source as follows:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| **Major Products/Service Lines** |  |  |  |
| &nbsp;&nbsp;Product revenue, net<sup>(1)</sup> | $1507573 | $1524782 | $1263068 |
| &nbsp;&nbsp;License and royalty revenues | 34036 | 9128 | 33361 |
| Total revenues | $1541609 | $1533910 | $1296429 |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)The Company's product revenue includes PYLARIFY, DEFINITY, Neuraceq and TechneLite among other products. This category represents the delivery of physical goods. The Company applies the same revenue recognition policies and judgments for all of its principal products.

The Company classifies its revenues into three product categories: Radiopharmaceutical Oncology, Precision Diagnostics, and Strategic Partnerships and Other Revenue. Radiopharmaceutical Oncology includes PYLARIFY and historically included AZEDRA. In the first quarter of 2024, the Company discontinued the production of AZEDRA. Precision Diagnostics includes DEFINITY, Neuraceq, TechneLite and other diagnostic imaging products. Strategic Partnerships and Other Revenue primarily includes revenue derived from partnerships with pharmaceutical companies and academic institutions that use the Company's commercial or investigational products in clinical trials as research tools, royalties and other milestone payments received from the Company's strategic partners that have commercialized products pursuant to license arrangements with the Company, as well as contract development and manufacturing organization ("CDMO") revenue generated by Evergreen.

Revenue by product category on a net basis is as follows:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| &nbsp;&nbsp;PYLARIFY | $989116 | $1057834 | $851303 |
| &nbsp;&nbsp;Other radiopharmaceutical oncology |  | 384 | 3130 |
| Total radiopharmaceutical oncology | 989116 | 1058218 | 854433 |
| &nbsp;&nbsp;DEFINITY | 330248 | 317792 | 279768 |
| &nbsp;&nbsp;Neuraceq | 51447 |  |  |
| &nbsp;&nbsp;TechneLite | 86803 | 95487 | 87370 |
| &nbsp;&nbsp;Other precision diagnostics | 24616 | 24231 | 22980 |
| Total precision diagnostics | 493114 | 437510 | 390118 |
| Strategic partnerships and other revenue | 59379 | 38182 | 51878 |
| Total revenues | $1541609 | $1533910 | $1296429 |

---

The following table presents the Company's revenue by geographic region determined by location of customer or other party for the periods presented:

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **% of Revenue** | **2024** | **% of Revenue** | **2023** | **% of Revenue** |
| United States | $1458881 | 94.6% | $1484687 | 96.8% | $1262146 | 97.4% |
| Rest of world | 82728 | 5.4% | 49223 | 3.2% | 34283 | 2.6% |
| &nbsp;&nbsp;Total revenues | 1541609 | 100.0% | 1533910 | 100.0% | 1296429 | 100.0% |

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***Product Revenue, Net***

The Company sells its products principally to hospitals, independent diagnostic testing facilities, and radiopharmacies. The Company considers customer purchase orders, which in some cases are governed by master sales or group purchasing organization agreements, to be the contracts with a customer.

For each contract, the Company considers the promise to transfer products, each of which is distinct, to be the identified performance obligations. In determining the transaction price, the Company evaluates whether the price is subject to refund or adjustment to determine the net consideration to which the Company expects to be entitled.

The Company typically invoices customers upon satisfaction of identified performance obligations. As the Company's standard payment terms are 30 to 60 days from invoicing, the Company has elected to use the significant financing component practical expedient.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

The Company allocates the transaction price to each distinct product based on its relative standalone selling price. The product price as specified on the purchase order is considered the standalone selling price as it is an observable input which depicts the price as if sold to a similar customer in similar circumstances.

Revenue is recognized when control of the product is transferred to the customer (i.e., when the Company's performance obligation is satisfied), which typically occurs upon delivery to the customer. Further, in determining whether control has transferred, the Company considers if there is a present right to payment and legal title, along with risks and rewards of ownership having transferred to the customer.

Frequently, the Company receives orders for products to be delivered over multiple dates that may extend across several reporting periods. The Company invoices for each delivery subsequent to shipment and recognizes revenues for each distinct product when transfer of control has occurred.

The Company generally does not separately charge customers for shipping and handling costs, but any shipping and handling costs charged to customers are included in product revenue, net. Taxes collected from customers relating to product sales and remitted to governmental authorities are excluded from revenues.

*Variable Consideration*

Revenues from product sales are recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established for discounts, returns, rebates and allowances that are offered within contracts between the Company and its customers. These reserves are based on the amounts earned or to be claimed on the related sales and are classified as a current liability. Where appropriate, these estimates take into consideration a range of possible outcomes which are probability-weighted for relevant factors such as the Company's historical experience, current contractual and statutory requirements, specific known market events and trends, industry data and forecasted customer buying and payment patterns. Overall, these reserves reflect the Company's best estimates of the amount of consideration to which it is entitled based on the terms of the contract. The amount of variable consideration included in the transaction price may be constrained, and is included in the net sales price only to the extent that it is probable that a significant reversal in the amount of the cumulative revenue recognized will not occur in a future period. Actual amounts of consideration ultimately received may differ from the Company's estimates. If actual results in the future vary from the Company's estimates, the Company adjusts these estimates, which would affect product revenue and earnings in the period such variances become known.

*Rebates*

Estimates for rebates represent the Company's estimated obligations under contractual arrangements with third parties. Rebate accruals are recorded in the same period the related revenue is recognized, resulting in a reduction of revenue and the establishment of a liability which is included in accrued expenses and other current liabilities in the Company's consolidated balance sheets. These rebates result from performance-based offers that are primarily based on attaining contractually specified sales volumes and growth, Medicaid rebate programs for the Company's products, administrative fees of group purchasing organizations and certain distributor-related commissions. The calculation of the accrual for these rebates is based on an estimate of the third-party's expected purchases and the resulting applicable contractual rebate to be earned over a contractual period.

*Product Returns*

The Company generally offers customers a limited right of return due to non-conforming product. The Company estimates the amount of its product sales that may be returned by its customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized. The Company currently estimates product return liabilities using its historical product return information and considers other factors that it believes could significantly impact its expected returns, including product recalls. Reserves for product returns are not significant to the Company due to the nature of its products including radiopharmaceutical products with limited half-lives.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

An analysis of the amount of, and change in, reserves is summarized as follows:

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| | |
|:---|:---|
| **(in thousands)** | **Rebates** |
| Balance at January 1, 2023 | $13399 |
| &nbsp;&nbsp;Provision related to current period revenues | 31855 |
| &nbsp;&nbsp;Payments or credits made during the period | (29184) |
| Balance at December 31, 2023 | 16070 |
| &nbsp;&nbsp;Provision related to current period revenues | 63504 |
| &nbsp;&nbsp;Payments or credits made during the period | (54326) |
| Balance at December 31, 2024 | 25248 |
| &nbsp;&nbsp;Provision related to current period revenues | 167628 |
| &nbsp;&nbsp;Payments or credits made during the period | (126428) |
| Balance at December 31, 2025 | $66448 |

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***License and Royalty Revenues***

The Company has entered into licensing agreements, under which it licenses certain rights to third parties. The terms of these arrangements typically include payment to the Company of one or more of the following: non-refundable, up-front license fees; development, regulatory and commercial milestone payments; and royalties on net sales of licensed products. The Company also has distribution licenses which are treated as combined performance obligations with the delivery of its products and are classified as product revenue, net.

In determining the appropriate amount of revenue to be recognized as it fulfills its obligations under each of its agreements, the Company performs the five-step approach stated earlier. The Company uses judgment in determining the number of performance obligations in a license agreement by assessing whether the license is distinct or should be combined with another performance obligation, as well as the nature of the license. As part of the accounting for these arrangements, the Company must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. The Company uses key assumptions to determine the stand-alone selling price, which may include market conditions, reimbursement rates for personnel costs, development timelines and probabilities of regulatory success.

*Licenses of Intellectual Property*

If the license to the Company's intellectual property is determined to be distinct from the other performance obligations identified in the arrangement, the Company recognizes revenues from non-refundable, up-front fees allocated to the license when the license is transferred to the customer and the customer is able to use and benefit from the license. For licenses that are bundled with other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress for purposes of recognizing revenue from non-refundable, up-front fees. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.

*Milestone Payments*

At the inception of each arrangement that includes development or sales milestone payments, the Company evaluates whether the milestones are considered probable of being reached and estimates the amount to be included in the transaction price using the most likely amount method. If it is probable that a significant revenue reversal would not occur, the associated milestone value is included in the transaction price. Milestone payments that are outside the control of the Company or the licensee, such as regulatory approvals, are not considered probable of being achieved until those approvals are received. The transaction price is then allocated to each performance obligation on a relative stand-alone selling price basis, for which the Company recognizes revenue as or when the performance obligations under the contract are satisfied. At the end of each subsequent reporting period, the Company re-evaluates the probability of achievement of such milestones and any related constraint, and if necessary, adjusts its estimate of the overall transaction price. Any such adjustments are recorded on a cumulative catch-up basis, which would affect license and royalty revenues and earnings in the period of adjustment. At December 31, 2025, the variable consideration for the milestone payments is constrained and is excluded from contract price until the milestone is achieved by the customer.

*Royalty Revenues*

For arrangements that include sales-based royalties, including milestone payments based on the level of sales, and the license is deemed to be the predominant item to which the royalties relate, the Company recognizes revenue at the later of (i) when the related sales occur, or (ii) when the performance obligation to which some or all of the royalty has been allocated has been satisfied (or partially satisfied).

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

***CDMO Revenue***

The Company generates a small amount of CDMO revenue providing contract development and manufacturing services to emerging and mid-sized radiopharmaceutical companies developing alpha- and beta-emitting diagnostic and therapeutic products across early- to late-stage clinical development, with the ability to support commercial supply. The Company prices these contracts based on the scope and complexity of services, including the number of batches or doses, laboratory and personnel requirements, contract duration, isotope utilized, and prevailing market conditions.

The Company assesses each agreement involving CDMO services to determine if there are multiple performance obligations, and allocates revenue to each performance obligation based on its stand-alone selling price relative to the stand-alone selling prices of other performance obligations within the contract. CDMO contracts generally have defined terms, generally one to two years; however, the timing of satisfaction of performance obligations is typically contingent on customer clinical trial progress and development timelines. The Company recognizes revenue when it satisfies each performance obligation, which is generally when services are completed and quality-approved products are shipped and title transfers to the customer.

***Contract Assets and Liabilities***

The Company recognizes an asset for incremental costs of obtaining a contract with a customer if it expects to recover those costs. The Company's sales incentive compensation plans qualify for capitalization since these plans are directly related to sales achieved during a period of time. However, the Company has elected the practical expedient to expense the costs as they are incurred, within sales and marketing expenses, since the amortization period is less than one year.

The following table provides a roll forward of deferred revenue:

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| | |
|:---|:---|
| **(in thousands)** | **Deferred Revenue** |
| Balance at January 1, 2024 | $1489 |
| &nbsp;&nbsp;Revenue recognized in relation to the beginning of the year contract liability balance | (634) |
| &nbsp;&nbsp;Revenue deferred | 592 |
| Balance at December 31, 2024 | 1447 |
| &nbsp;&nbsp;Revenue recognized in relation to the beginning of the year contract liability balance | (3144) |
| &nbsp;&nbsp;Revenue deferred | 8681 |
| Balance at December 31, 2025 | $6984 |

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The Company did not record any revenue related to performance obligations satisfied (or partially satisfied) in previous periods during the years ended December 31, 2025 and 2024.

The Company is required to allocate a portion of its revenue received from commercial contracts to future reporting periods to the extent the Company had performance obligations that extended beyond one year. However, the Company's performance obligations are typically part of contracts that have an original expected duration of one year or less. Therefore, since the Company elected the practical expedient under ASC 606-10-50-14, it does not disclose information regarding performance obligations which are part of contracts that have an original expected duration of one year or less.

**4. Fair Value of Financial Instruments**

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In order to increase consistency and comparability of fair value measurements, financial instruments are categorized based on a hierarchy that prioritizes observable and unobservable inputs used to measure fair value into three broad levels, which are described below:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Level 1* — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Level 2* — Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (i.e., interest rates, yield curves, etc.) and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Level 3* — Unobservable inputs that reflect the Company's estimates about the assumptions that market participants would use in pricing the asset or liability. The Company develops these inputs based on the best information available, including its own data.

The Company's financial assets and liabilities that are measured at fair value on a recurring basis consist of money market funds, deferred compensation plan liabilities, contingent consideration liabilities and equity investments. The Company invests excess cash from its operating cash accounts in overnight investments and reflects these amounts in cash and cash equivalents in

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

the consolidated balance sheets at fair value using quoted prices in active markets for identical assets. Investment in equity securities resulting from the Perspective Therapeutics, Inc. ("Perspective") and Radiopharm Theranostics Limited ("Radiopharm") strategic agreements were recorded at fair value by the Company and are adjusted for price changes observable in the market each quarter. The Company recorded the contingent consideration liabilities resulting from the acquisitions of Progenics, Evergreen and Life Molecular at fair value based on inputs that are not observable in the market.

The tables below present information about the Company's assets and liabilities measured at fair value on a recurring basis:

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| | | | | |
|:---|:---|:---|:---|:---|
|  |  | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** |
|  | **Total Fair** |  |  |  |
| **(in thousands)** | **Value** | **Level 1** | **Level 2** | **Level 3** |
| Assets: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Money market funds | $179791 | $179791 | $— | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;Investment securities | 41087 | 41087 |  |  |
| Total assets | $220878 | $220878 | $— | $— |
| Liabilities: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Deferred compensation plan liabilities | $943 | $943 | $— | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;Contingent consideration liabilities | 94339 |  |  | 94339 |
| Total liabilities | $95282 | $943 | $— | $94339 |
|  |  | **December 31, 2024** | **December 31, 2024** | **December 31, 2024** |
|  | **Total Fair** |  |  |  |
| **(in thousands)** | **Value** | **Level 1** | **Level 2** | **Level 3** |
| Assets: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Money market funds | $682209 | $682209 | $— | $— |
| &nbsp;&nbsp;&nbsp;&nbsp;Investment securities | 39489 | 39489 |  |  |
| Total assets | $721698 | $721698 | $— | $— |

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***Nonqualified Deferred Compensation Plan***

The Company maintains the Lantheus Nonqualified Deferred Compensation Plan (the "LDCP") for the benefit of certain key, highly-compensated employees and non-employee directors. The assets of the LDCP are invested in corporate-owned life insurance ("COLI") and mutual funds at December 31, 2025. The mutual funds are classified as Level 1 of the fair value hierarchy because they are valued using quoted market prices. There were no assets or liabilities balances in the LDCP at December 31, 2024. The liabilities of the LDCP are presented in other long-term liabilities in the Company's consolidated balance sheets. See Note 18, *"Benefit Plans"* for more information on the LDCP.

***Perspective Therapeutics, Inc. Equity Securities***

At December 31, 2025, the Company held 11,677,339 shares of Perspective common stock ("Perspective Shares"). The Company accounts for its investment in Perspective Shares as an equity investment with a readily determinable fair value, as the securities are publicly traded on the New York Stock Exchange ("NYSE"). The fair value of the Perspective Shares is based on their closing price on the NYSE at the end of the fiscal period and is classified within Level 1 of the fair value hierarchy because the equity securities are valued using quoted market prices. The fair value of the Perspective Shares as of December 31, 2025 was approximately $32.1 million based on a closing market price of $2.75 per share on December 31, 2025, resulting in an unrealized loss of $5.1 million for the year ended December 31, 2025. The fair value of the Perspective Shares as of December 31, 2024 was approximately $37.3 million based on a closing market price of $3.19 per share on December 31, 2024, resulting in an unrealized loss of $41.0 million for the year ended December 31, 2024. See Note 19, *"Acquisitions,"* to these consolidated financial statements for further discussion of the Perspective transaction.

***Radiopharm Theranostics Limited Equity Securities***

At December 31, 2025, the Company held 537,958,513 shares of Radiopharm common stock ("Radiopharm Shares"). The Company accounts for its investment in Radiopharm Shares as an equity investment with a readily determinable fair value, as the securities are publicly traded on the Australian Stock Exchange ("ASX"). The fair value of the Radiopharm Shares is based on their closing price on the ASX at the end of the fiscal period and is classified within Level 1 of the fair value hierarchy because the equity securities are valued using quoted market prices. The fair value of the Radiopharm Shares as of December 31, 2025 was approximately $9.0 million based on the converted closing market price of approximately $0.02 per share on December 31, 2025, resulting in an unrealized loss on equity securities of $3.3 million for the year ended December 31, 2025. The fair value of the Radiopharm Shares as of December 31, 2024 was approximately $2.2 million based on the converted closing market price of approximately $0.01 per share on December 31, 2024, resulting in an unrealized loss on equity securities of $2.6 million for the

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

year ended December 31, 2024. See Note 19, *"Acquisitions"* to these consolidated financial statements for further discussion of the Radiopharm transaction.

***Contingent Consideration***

*Progenics*

The Company assumed contingent consideration liabilities related to a previous acquisition completed by Progenics in 2013 ("2013 Acquisition"). These contingent consideration liabilities include potential payments of up to $70.0 million if the Company attains certain net sales targets primarily for AZEDRA and 1095 (also known as 131 I-MIP-1095) and a $5.0 million 1095 commercialization milestone. Additionally, there is a potential payment of up to $10.0 million for a commercialization milestone related to a prostate cancer product candidate the Company refers to as "1404" that was out-licensed to ROTOP Pharmaka GmbH. The Company's total potential payments related to the 2013 Acquisition are approximately $85.0 million. The Company considers the contingent consideration liabilities relating to the 2013 Acquisition each a Level 3 instrument (one with significant unobservable inputs) in the fair value hierarchy. The estimated fair value of these was determined based on probability adjusted discounted cash flows and Monte Carlo simulation models that included significant estimates and assumptions pertaining to commercialization events and sales targets. The most significant unobservable inputs with respect to 1095 and 1404 are the probabilities of achieving regulatory approval of those development projects and subsequent commercial success.

Significant changes in any of the probabilities of success, the probabilities as to the periods in which sales targets and milestones will be achieved, discount rates or underlying revenue forecasts would result in a higher fair value measurement. The Company records the contingent consideration liabilities at fair value with changes in estimated fair values recorded in general and administrative expenses in the consolidated statements of operations. The Company can give no assurance that the actual amounts paid, if any, in connection with the contingent consideration liabilities, will be consistent with any recurring fair value estimate of such contingent consideration liabilities. The Company estimated that the probability of successfully meeting the sales targets and commercialization milestones described above was zero, as the Company discontinued the production of AZEDRA in the first quarter of 2024 and the Company is not actively advancing 1095. As a result of this assessment, the Company determined the value of the contingent consideration liabilities to be $0 at December 31, 2025 and 2024.

*Evergreen Theragnostics, Inc.*

Pursuant to the terms of the Agreement and Plan of Merger (the "Evergreen Merger Agreement") with Evergreen and Shareholder Representative Services LLC governing the Company's acquisition of Evergreen in April 2025 (see Note 19, *"Acquisitions"*), the Company is required to pay up to $727.5 million in cash upon the achievement of specified milestones in connection with the development and commercialization of certain milestone products, as defined in the Evergreen Merger Agreement, and Octevy (also referred to as LNTH-2501), a registrational-stage PET diagnostic imaging agent targeting neuroendocrine tumors. The Company records these possible payments as contingent consideration liabilities that are classified within Level 3 of the fair value hierarchy. The Company estimated the fair value of the contingent consideration liabilities associated with the sales milestones using a Monte Carlo simulation in a risk-neutral framework, whereby the achievement of the future revenue associated with the sales milestones was simulated using a geometric Brownian motion model. The Company estimated the fair value of the contingent consideration liability associated with the development and commercialization milestones using a probability-weighted DCF approach. The most significant unobservable inputs with respect to these milestone products and Octevy, are the revenue volatility and probabilities of achieving regulatory milestones, respectively. A significant change in probability of payment of the first regulatory milestone payment for Octevy could result in a material fluctuation in the value of the contingent consideration liability.

*Life Molecular Imaging Limited*

Pursuant to the terms of the Sale and Purchase Agreement (the "LMI Purchase Agreement") with Life Medical Group Limited ("Life Medical") in connection with the Company's acquisition of Life Molecular in July 2025 (see Note 19, "*Acquisitions"*), the Company is required to make certain earn-out and milestone payments as a percentage of and upon achievement of specified net sales thresholds, respectively, of Neuraceq and certain other imaging and tracing agents in Life Molecular's pipeline. These contingent cash earn-out and milestone payments total up to $400.0 million.

In addition to the net sales earn-out and milestone payments, the Company also assumed a contingent consideration liability owed to Piramal Holdings SA ("Piramal"), pursuant to an assumed contract (the "Piramal SPA"). The Company is required to make cash payments of up to $30.0 million upon the achievement of specified earnings metrics of Life Molecular, as defined in the Piramal SPA.

The Company estimated the fair value of the contingent consideration liabilities using a Monte Carlo simulation model in a risk-neutral framework, whereby the achievement of the future revenue and other specified earnings metrics associated with the contingent payments were simulated using a geometric Brownian motion model. The most significant unobservable inputs with respect to Neuraceq and other imaging and tracing agents in Life Molecular's pipeline include revenue volatility and the

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

probability of commercial success. A significant change in the revenue volatility or forecasted commercial revenue could result in a material fluctuation in the value of the contingent consideration liability.

The following tables summarize quantitative information and assumptions pertaining to the fair value measurement of liabilities using Level 3 inputs as of December 31, 2025:

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[**<u>**Table of Contents**</u>**](#toc_page)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Fair Value at** |  |  |  |  |
|  | **December 31, 2025** |  |  |  | **Weighted** |
| **Contingent Consideration Liability** | **(in thousands)** | **Valuation Technique** | **Unobservable Inputs** | **Range** | **Average** |
| Development and commercialization milestones | $42378 | Discounted cash flow | Payment discount rate | 7.3% - 11.2% | 8.7% |
|  |  |  | Probability of payment | 0.0% - 100.0% | 86.2% |
|  |  |  | Range of expected payment dates | 2026 - 2037 | N/A |
| Sales milestones | 30877 | Scenario analysis | Revenue volatility | 37.0% - 48.0% | 46.8% |
|  |  |  | Revenue discount rate | 9.4% - 17.7% | 16.8% |
| Assumed contingent consideration from Piramal SPA | 21084 | Scenario analysis | EBITDA volatility | 60.0% | 60.0% |
|  |  |  | EBITDA discount rate | 21.0% - 21.0% | 21.0% |
| Total contingent consideration liabilities | $94339 |  |  |  |  |

---

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[**<u>**Table of Contents**</u>**](#toc_page)

Unobservable inputs were weighted by the relative fair value of the contingent consideration liability. There were no liabilities with fair values that were measured using Level 3 inputs as of December, 31, 2024.

For those financial instruments with significant Level 3 inputs, the following table summarizes the activities for the periods indicated:

---

| | |
|:---|:---|
|  | **Level 3** |
|  | **Accrued Contingent** |
| **(in thousands)** | **Consideration** |
| Balance at January 1, 2024 | $2700 |
| &nbsp;&nbsp;Change in fair value included in net income | (1194) |
| &nbsp;&nbsp;Gain on partial buyout of 2013 Milestone Rights | (1505) |
| &nbsp;&nbsp;Cash payments | (1) |
| Balance at December 31, 2024 |  |
| &nbsp;&nbsp;Evergreen acquisition | 43042 |
| &nbsp;&nbsp;Life Molecular acquisition | 53800 |
| &nbsp;&nbsp;Acquired contingent consideration from Piramal SPA - current portion | (3882) |
| &nbsp;&nbsp;Changes in fair value included in net income | 1379 |
| Balance at December 31, 2025 | $94339 |

---

**5. Income Taxes**

The components of income before income taxes consists of the following:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| Domestic | $320265 | $429899 | $410326 |
| Foreign | (6473) | 1078 | 617 |
| &nbsp;&nbsp;Income before income taxes | $313792 | $430977 | $410943 |

---

The Company's income tax expense consists of the following:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| Current |  |  |  |
| &nbsp;&nbsp;Federal | $40613 | $114645 | $110108 |
| &nbsp;&nbsp;State | 17058 | 33919 | 29806 |
| &nbsp;&nbsp;Foreign | 967 |  |  |
|  | 58638 | 148564 | 139914 |
| Deferred |  |  |  |
| &nbsp;&nbsp;Federal | 21686 | (26960) | (45252) |
| &nbsp;&nbsp;State | 1781 | (3657) | (10739) |
| &nbsp;&nbsp;Foreign | (1872) | 588 | 359 |
|  | 21595 | (30029) | (55632) |
| Income tax expense | $80233 | $118535 | $84282 |

---

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[**<u>**Table of Contents**</u>**](#toc_page)

**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

The table below provides the updated requirements of ASU 2023-09 for 2025. See Note 2, *"Summary of Significant Accounting Policies - Recent Accounting Pronouncements"* for additional detail on the adoption of ASU 2023-09.

The reconciliation of income taxes at the U.S. federal statutory rate to the income tax expense is as follows:

---

| | | |
|:---|:---|:---|
|  | **Year Ended December 31, 2025** | **Year Ended December 31, 2025** |
| **(in thousands, except percent data)** | **Amount** | **Percent** |
| U.S. federal statutory tax rate | $65896 | 21.0% |
| State and local income taxes, net of Federal benefit<sup>(1)</sup> | 16201 | 5.2% |
| Foreign tax effects | 271 | 0.1% |
| Effect of cross-border tax laws | (874) | (0.3%) |
| Tax credits |  |  |
| &nbsp;&nbsp;Research and development tax credits | (5446) | (1.7%) |
| Changes in valuation allowances | 1832 | 0.6% |
| Nontaxable or nondeductible items | 3899 | 1.2% |
| Changes in unrecognized tax benefits | (1324) | (0.4%) |
| Other adjustments | (222) | (0.1%) |
| &nbsp;&nbsp;Total tax provision and effective tax rate | $80233 | 25.6% |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)State and local taxes in California, Florida, Illinois, New York, New York City and Pennsylvania made up the majority (greater than 50 percent) of the tax effect in this category.

As previously disclosed for the years ended December 31, 2024 and 2023, prior to the adoption of ASU 2023-09, the effective income tax rate differs from the statutory federal income tax rate as follows:

---

| | | |
|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2024** | **2023** |
| U.S. statutory rate | $90506 | $86298 |
| Permanent items | (413) | 1042 |
| Sale of RELISTOR licensed intangible asset |  | (10817) |
| Section 162(m) | 407 | 307 |
| Uncertain tax positions | 2466 | (5045) |
| Tax credits | (5247) | (2118) |
| State and local taxes | 21724 | 18726 |
| Impact on deferred taxes of change in tax rate | (970) | (330) |
| Changes in fair value of contingent assets and liabilities | (567) | (1948) |
| Foreign tax rate differential | 66 | 128 |
| Valuation allowance | 12123 | (4) |
| Stock compensation | (206) | (3941) |
| Change in indemnification deferred tax asset | (28) | 1240 |
| Other | (1326) | 744 |
| &nbsp;&nbsp;Income tax expense | $118535 | $84282 |

---

Income taxes paid (net of refunds) are as follows:

---

| | |
|:---|:---|
| **(in thousands)** | **Year Ended December 31, 2025** |
| U.S. federal | $47000 |
| U.S. state and local<sup>(1)</sup> | 18889 |
| Foreign | 3148 |
| Income taxes paid (net of refunds) | $69037 |

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[**<u>**Table of Contents**</u>**](#toc_page)

**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

(1)Includes $3.5 million of California payments.

The components of deferred income tax assets (liabilities) are as follows:

---

| | | |
|:---|:---|:---|
|  | **December 31,** | **December 31,** |
| **(in thousands)** | **2025** | **2024** |
| **Deferred Tax Assets** |  |  |
| Federal benefit of state taxes payable | $521 | $867 |
| Reserves, accruals and other | 36166 | 30382 |
| Capitalized research and development | 6194 | 29799 |
| Stock compensation | 18363 | 13876 |
| Unrealized loss on investments | 12794 | 10707 |
| Intangible assets |  | 33771 |
| Net operating loss carryforwards | 85929 | 71502 |
| Lease liability | 13730 | 14100 |
| &nbsp;&nbsp;Deferred tax assets | 173697 | 205004 |
| **Deferred Tax Liabilities** |  |  |
| Right-of-use asset | (7919) | (9241) |
| Depreciation | (13617) | (9881) |
| Intangible assets | (78517) |  |
| &nbsp;&nbsp;Deferred tax liabilities | (100053) | (19122) |
| Less: valuation allowance | (18694) | (15649) |
|  | $54950 | $170233 |
| Recorded in the accompanying consolidated balance sheet as: |  |  |
| &nbsp;&nbsp;Noncurrent deferred tax assets, net | $54950 | $170233 |

---

On July 4, 2025, the One Big Beautiful Bill Act (the "OBBBA") was enacted. The OBBBA provides for significant U.S. tax law changes, including the permanent extension of certain expiring provisions of the Tax Cuts and Jobs Act, modifications to the international tax framework, and the restoration of favorable tax treatment for certain business provisions. These provisions did not have a material impact on the Company's effective income tax rate for 2025. The change in the Company's deferred tax balances for 2025 was primarily related to the acquisitions of Life Molecular and Evergreen and the expensing of previously capitalized R&D expenses, for tax purposes, under the OBBBA.

The Company regularly assesses its ability to realize its deferred tax assets. Assessing the realizability of deferred tax assets requires significant management judgment. In determining whether its deferred tax assets are more-likely-than-not realizable, the Company evaluated all available positive and negative evidence. As of December 31, 2025 and 2024, the Company maintains a valuation allowance of $18.7 million and $15.6 million, respectively. The amounts in 2025 and 2024 primarily relate to unrealized losses incurred during each year on the Company's investment in equity securities and to net deferred tax assets of certain of the Company's foreign subsidiaries.

Utilization of net operating loss carryforwards and R&D credit carryforwards may be subject to a substantial annual limitation due to ownership change limitations that could occur in the future in accordance with Section 382 of the Internal Revenue Code of 1986 ("IRC Section 382") and with Section 383 of the Internal Revenue Code of 1986, as well as similar state provisions. These ownership changes may limit the amount of net operating loss carryforwards and R&D credit carryforwards that can be utilized annually to offset future taxable income and taxes, respectively. In general, an ownership change, as defined by IRC Section 382, results from transactions which impact the ownership of certain stockholders or public groups in the stock of a corporation by more than 50 percentage points over a three-year period.

At December 31, 2025, the Company had U.S. federal net operating loss carryforwards of approximately $281.4 million, $108.2 million of which will expire between 2029 and 2037, and $173.2 million of which can be carried forward indefinitely. The Company has foreign net operating losses of $76.3 million, $3.9 million of which expire between 2032 and 2035 and $72.4 million of which can be carried forward indefinitely. The Company's state net operating losses are $9.2 million on a tax-effected basis, the majority of which will expire between 2032 and 2045. The Company has state research credit carryforwards of $3.4 million, which will expire between 2030 and 2040.

The Company's U.S. federal income tax returns are subject to examination for three years after the filing date of the return. The state and foreign income tax returns are subject to examination for periods varying from three to six years after filing. The Company is currently undergoing tax examination in the United Kingdom for tax years 2018 to 2021 and in Germany for tax years 2020 to 2022.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

A reconciliation of the Company's changes in uncertain tax positions for 2025, 2024 and 2023 is as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| Balance at January 1 | $7620 | $4099 | $1480 |
| &nbsp;&nbsp;Additions related to current year tax positions | 7465 | 948 | 3749 |
| &nbsp;&nbsp;Additions related to prior year tax positions | 22441 | 2694 |  |
| &nbsp;&nbsp;Reductions related to prior year tax positions | (351) | (3) | (688) |
| &nbsp;&nbsp;Settlements | (1041) | (118) | (442) |
| &nbsp;&nbsp;Lapse of statute of limitations | (637) |  |  |
| Balance at December 31 | $35497 | $7620 | $4099 |

---

As of December 31, 2025 and 2024, total liabilities for uncertain tax positions, including interest and penalties, were $37.6 million and $9.4 million, respectively, consisting of uncertain tax positions of $35.5 million and $7.6 million, respectively, interest accruals of $2.1 million and $1.8 million, respectively, and no penalty accruals as of December 31, 2025 and 2024. The increase in uncertain tax positions during the year ended December 31, 2025 was primarily related to tax uncertainties recorded in purchase accounting related to the LMI Acquisition. As of December 31, 2025, $29.6 million and $8.0 million of these liabilities were recorded in other long-term liabilities and as a reduction of deferred tax assets, respectively. As of December 31, 2024, $1.4 million, $7.3 million and $0.7 million of these liabilities were recorded in current liabilities, other long-term liabilities, and as a reduction of deferred tax assets, respectively. As of December 31, 2025, the Company has $32.0 million of unrecognized tax benefits which would impact the effective tax rate if recognized.

**6. Inventory, Net**

Inventory, net, consisted of the following:

---

| | | |
|:---|:---|:---|
|  | **December 31,** | **December 31,** |
| **(in thousands)** | **2025** | **2024** |
| Raw materials | $25927 | $29080 |
| Work in process | 16335 | 15870 |
| Finished goods | 22412 | 23075 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total inventory, net<sup>(1)</sup> | $64674 | $68025 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)As of December 31, 2025, amounts totaling $4.0 million, $3.5 million and $4.2 million were reclassified to assets held for sale, from raw materials, work in process and finished goods, respectively, as a result of the then-pending sale of the Company's single-photon emission computerized tomography ("SPECT") business. See Note 8, *"Assets and Liabilities Held for Sale"* for more information.

The majority of the value of the inventory relates to non-radioactive products. With respect to the Company's products that are radiopharmaceuticals, due to the limited shelf life of such products, they are generally not held as finished goods.

**7. Property, Plant and Equipment, Net**

Property, plant and equipment, net, consisted of the following:

---

| | | |
|:---|:---|:---|
|  | **December 31,** | **December 31,** |
| **(in thousands)** | **2025** | **2024** |
| Land | $3020 | $9480 |
| Buildings | 49913 | 85523 |
| Machinery, equipment and fixtures | 110587 | 114357 |
| Computer software | 55550 | 48702 |
| Construction in progress | 17406 | 27498 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total gross property, plant and equipment | 236476 | 285560 |
| Less - accumulated depreciation and amortization | (72790) | (108762) |
| &nbsp;&nbsp;&nbsp;&nbsp;Total property, plant and equipment, net<sup>(1)</sup> | $163686 | $176798 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)As of December 31, 2025, amounts totaling $6.5 million in land, $48.1 million in buildings, $37.5 million in machinery, equipment and fixtures, $0.5 million in computer software, $6.2 million in construction in progress and $49.6 million in accumulated depreciation and amortization were reclassified to assets held for sale as a result of the then-pending sale of the Company's SPECT business. See Note 8, *"Assets and Liabilities Held for Sale"* for more information.

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[**<u>**Table of Contents**</u>**](#toc_page)

**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

Depreciation and amortization expense related to property, plant and equipment, net, was $22.5 million, $20.4 million and $13.2 million for the years ended December 31, 2025, 2024 and 2023, respectively.

The Company tests long-lived assets for recoverability whenever events or changes in circumstances suggest that the carrying value of an asset or group of assets may not be recoverable.

During 2023, as a result of a decline in expected future cash flows related to the AZEDRA marketed intangible asset, the Company recorded a noncash impairment of $6.0 million in cost of goods sold in the accompanying consolidated statements of operations.

On January 8, 2024, the Company entered into an agreement with Perspective to transfer the sublease for the Company's Somerset, New Jersey facility (the "Somerset Facility") and sold the associated assets at the Somerset Facility for $8.0 million. The transfer of the sublease and completion of the asset sale occurred on March 1, 2024. The sale of assets resulted in a derecognition to the right-of-use asset of $0.4 million, the lease liability of $0.4 million and remaining property, plant and equipment of $0.8 million. The Company also incurred commission expense of $1.0 million related to the transaction. The Company recorded a gain on sale of assets of $6.3 million in operating income in the accompanying consolidated statements of operations for the year ended December 31, 2024. See Note 19, *"Acquisitions"* for more further discussion of the Perspective transaction.

During the fourth quarter of 2024, the Company completed the sale of a portion of its North Billerica campus for $9.8 million in cash. The Company recorded a gain on sale of assets of $2.1 million in operating income in the accompanying consolidated statements of operations for the year ended December 31, 2024.

**8. Assets and Liabilities Held for Sale**

***SPECT Business***

On May 1, 2025, the Company entered into a definitive agreement to sell its SPECT business to SHINE Technologies, LLC ("SHINE"), a wholly-owned subsidiary of Illuminated Holdings, Inc. Under the terms of the agreement, SHINE will acquire the assets and liabilities associated with the Company's SPECT business, including its approved products (TechneLite, NEUROLITE, Xenon Xe-133 Gas, and Cardiolite) and the portion of the North Billerica, Massachusetts campus that manufactures the Company's SPECT products and SPECT-related Canadian operations. The transaction was subject to customary closing conditions and completed on January 1, 2026.

As of December 31, 2025, assets and liabilities associated with the Company's SPECT business have been presented in the Company's consolidated balance sheets as assets and liabilities held for sale as it was determined that these assets and liabilities met the criteria to be classified as such under ASC 360, *"Impairment or disposal of long-lived assets,"* and will continue to be classified as such until the transaction is completed. The Company determined that the fair value less costs to sell exceeded the carrying value of the assets and liabilities associated with the SPECT business, and therefore no indicator of impairment was present with respect to these assets during 2025. The Company does not believe the sale represents a strategic shift having a major effect on the Company's consolidated financial results and therefore does not meet the criteria for classification as discontinued operations.

The table below presents the carrying amounts of assets and liabilities held for sale related to the SPECT transaction:

---

| | |
|:---|:---|
|  | **December 31,** |
| **(in thousands)** | **2025** |
| **Assets:** |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable, net | $14261 |
| &nbsp;&nbsp;&nbsp;&nbsp;Inventory | 11641 |
| &nbsp;&nbsp;&nbsp;&nbsp;Other current assets | 2991 |
| &nbsp;&nbsp;&nbsp;&nbsp;Property, plant and equipment, net | 49244 |
| &nbsp;&nbsp;&nbsp;&nbsp;Intangible assets, net | 871 |
| &nbsp;&nbsp;&nbsp;&nbsp;Goodwill | 1734 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total assets held-for-sale | $80742 |
| **Liabilities:** |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | 3039 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accrued expenses and other liabilities | 1976 |
| &nbsp;&nbsp;&nbsp;&nbsp;Asset retirement obligation | 17453 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total liabilities held-for-sale | $22468 |

---

See Note 21, *"Subsequent Events,"* to these consolidated financial statements for subsequent event involving the Company's sale of its SPECT business to SHINE.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

**9. Asset Retirement Obligations**

The Company considers its legal obligation to remediate its facilities upon a potential decommissioning of its radioactive-related operations as an asset retirement obligation ("ARO"). The Company has production facilities which manufacture and process radioactive materials at its sites in North Billerica, Massachusetts and, through March 1, 2024, Somerset, New Jersey. As of December 31, 2025, the ARO is measured at the present value of the expenses estimated to be incurred in such remediation and is approximately $20.4 million.

The following table provides a summary of the changes in the Company's carrying value of asset retirement obligations:

---

| | |
|:---|:---|
| **(in thousands)** | **Amount** |
| Balance at January 1, 2024 | $22916 |
| &nbsp;&nbsp;&nbsp;&nbsp;Accretion expense | 428 |
| Balance at December 31, 2024 | 23344 |
| &nbsp;&nbsp;&nbsp;&nbsp;Revision of estimated decommissioning costs | (4727) |
| &nbsp;&nbsp;&nbsp;&nbsp;Remediation costs | (1520) |
| &nbsp;&nbsp;&nbsp;&nbsp;Reclassification to liabilities held-for-sale<sup>(1)</sup> | (17453) |
| &nbsp;&nbsp;&nbsp;&nbsp;Accretion expense | 494 |
| Balance at December 31, 2025 | $138 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)Amount reclassified to liabilities held for sale as a result of the then-pending sale of the assets and liabilities associated with the Company's SPECT business. See Note 8, *"Assets and Liabilities Held for Sale"* for more information.

During the year ended December 31, 2025, the Company revised certain inputs to its estimate of decommissioning costs expected to be incurred throughout the period of remediation, which reduced the estimate of remediation costs by $4.7 million. This reduction was primarily the result of changes in the technology and processes used for the remediation activities from those contemplated in the estimate previously provided in 2022, and was recorded in other income on the Company's consolidated statements of operations in the first quarter of 2025. During the year ended December 31, 2025, the Company recorded an additional reduction of $1.5 million to the ARO for remediation efforts completed during the period.

The Company is required to provide the Massachusetts Department of Public Health financial assurance demonstrating the Company's ability to fund the decommissioning and decontaminating of its North Billerica, Massachusetts facility in the event of any closure. The Company has provided this financial assurance in the form of a $30.3 million surety bond.

**10. Intangibles, Net and Goodwill**

***Goodwill***

The following table represents the change in the carrying value of goodwill from January 1 to December 31, 2025:

---

| | |
|:---|:---|
| **(in thousands)** | **Amount** |
| Balance at January 1, 2025 | $61189 |
| Acquisition of Evergreen | 116221 |
| Acquisition of Life Molecular | 63186 |
| Reclassification to assets held for sale<sup>(1)</sup> | (1734) |
| Foreign currency translation adjustments | 655 |
| Balance at December 31, 2025 | $239517 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)Amount reclassified to liabilities held for sale as a result of the then-pending sale of the assets and liabilities associated with the Company's SPECT business. See Note 8, *"Assets and Liabilities Held for Sale"* for more information.

***Intangibles, Net***

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[**<u>**Table of Contents**</u>**](#toc_page)

**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

Intangibles, net, consisted of the following:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** |
| **(in thousands)** | **Useful Lives<br>(in years)** | **Amortization Method** | **Gross** | **Accumulated<br>Amortization** | **Net** |
| **Amortizable:** |  |  |  |  |  |
| Trademarks | 25 | Straight-line | $13540 | $(12509) | $1031 |
| Customer relationships | 5 | Accelerated | 102958 | (90834) | 12124 |
| Currently marketed products | 9 - 10.5 | Straight-line | 492800 | (83013) | 409787 |
| Licenses | 13 - 16 | Straight-line | 22233 | (14167) | 8066 |
| Developed technology | 7 - 9 | Straight-line | 55982 | (13211) | 42771 |
| &nbsp;&nbsp;Total amortizable intangibles |  |  | 687513 | (213734) | 473779 |
| **Non-amortizable:** |  |  |  |  |  |
| In-process research and development | Indefinite |  | 249000 |  | 249000 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total intangibles, net |  |  | $936513 | $(213734) | $722779 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **December 31, 2024** | **December 31, 2024** | **December 31, 2024** | **December 31, 2024** | **December 31, 2024** |
| **(in thousands)** | **Useful Lives<br>(in years)** | **Amortization Method** | **Gross** | **Accumulated<br>Amortization** | **Net** |
| Trademarks | 15 - 25 | Straight-line | $13540 | $(12363) | $1177 |
| Customer relationships | 15 - 25 | Accelerated | 157742 | (136647) | 21095 |
| Currently marketed products | 9 -15 | Straight-line | 132800 | (53033) | 79767 |
| Licenses | 11 - 16 | Straight-line | 22233 | (13203) | 9030 |
| Developed technology | 7 - 9 | Straight-line | 55982 | (5290) | 50692 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total intangibles, net |  |  | $382297 | $(220536) | $161761 |

---

The Company recorded amortization expense for its intangible assets of $47.1 million, $43.8 million and $46.4 million for the years ended December 31, 2025, 2024 and 2023, respectively.

In June 2024, the Company entered into an agreement with the stockholders of Meilleur ("Meilleur Stockholders") to purchase all of the outstanding capital stock of Meilleur (which holds the rights under a license agreement to develop and commercialize NAV-4694) for approximately $32.9 million. The Company recorded a developed technology intangible asset of $40.3 million as a result of the purchase price and the specific assets and liabilities of Meilleur that were acquired as part of the asset acquisition based on their value at the agreed upon closing date. In August 2024, upon successful completion of a technology transfer, the Company paid $10.0 million to the Meilleur Stockholders. This additional contingent payment was capitalized as part of the asset cost and increased the total value of the Company's developed technology intangible assets. See Note 19, *"Acquisitions"* to these consolidated financial statements for further discussion of the acquisition of Meilleur.

The below table summarizes the estimated aggregate amortization expense expected to be recognized on the above intangible assets:

---

| | |
|:---|:---|
| **(in thousands)** | **Amount** |
| 2026 | $66891 |
| 2027 | 61380 |
| 2028 | 58074 |
| 2029 | 57930 |
| 2030 | 49041 |
| 2031 and thereafter | 180463 |
| &nbsp;&nbsp;Total | $473779 |

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

**11. Accrued Expenses and Other Current and Long-Term Liabilities** 

Accrued expenses and other current and long-term liabilities are comprised of the following:

---

| | | |
|:---|:---|:---|
|  | **December 31,** | **December 31,** |
| **(in thousands)** | **2025** | **2024** |
| Compensation and benefits | $63244 | $48263 |
| Freight, distribution and operations | 75995 | 85966 |
| Accrued rebates and discounts | 66448 | 25248 |
| Accrued professional fees | 26511 | 20308 |
| Accrued research and development expenses | 12964 | 13219 |
| Income taxes payable | 3574 | 1591 |
| Other | 18571 | 10397 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total accrued expenses and other current liabilities | $267307 | $204992 |
| Operating lease liabilities | $50016 | $53185 |
| Other long-term liabilities | 57850 | 9995 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total other long-term liabilities | $107866 | $63180 |

---

**12. Long-Term Debt and Other Borrowings, Net of Current Portion**

As of December 31, 2025, the Company's maturities of principal obligations under its long-term debt and other borrowings are as follows:

---

| | | |
|:---|:---|:---|
|  | **December 31,** | **December 31,** |
| **(in thousands)** | **2025** | **2024** |
| Principal amount 2.625% Convertible Senior Notes due December 2027 | $574996 | $575000 |
| Unamortized debt issuance costs | (6829) | (10392) |
| Finance lease liabilities | 1249 | 1645 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | 569416 | 566253 |
| Less: current portion of long-term debt and other borrowings | (738) | (974) |
| &nbsp;&nbsp;&nbsp;&nbsp;Total long-term debt and other borrowings, net of current portion | $568678 | $565279 |

---

***2022 Revolving Facility***

In December 2024, the Company entered into an amendment to its $350.0 million five-year revolving credit facility originally entered into in 2022. The amendment, among other things, increased the facility from $350.0 million to $750.0 million (as amended, the "2022 Revolving Facility") and extended the maturity date from December 2, 2027 to December 19, 2029. Under the terms of the 2022 Revolving Facility, the lenders are committed to extending credit to the Company from time to time consisting of revolving loans (the "Revolving Loans") in an aggregate principal amount not to exceed $750.0 million (the "Revolving Commitment") at any time, including a $40.0 million sub-facility for the issuance of letters of credit (the "Letters of Credit") and a $20.0 million sub-facility for swingline loans (the "Swingline Loans"). The Revolving Loans, Letters of Credit, and the Swingline Loans, if used, are expected to be used for working capital and for other general corporate purposes.

The Revolving Loans bear interest, with pricing based from time to time at the Company's election, at (i) the secured overnight financing rate as published by the Federal Reserve Bank of New York on its website plus an applicable margin that ranges from 1.25% to 2.00% based on the Company's total net leverage ratio or (ii) the alternative base rate plus an applicable margin that ranges from 0.25% to 1.00%, in either case, based on the Company's total net leverage ratio. The 2022 Revolving Facility also includes an unused commitment fee at a rate ranging from 0.15% to 0.30% per annum based on the Company's total net leverage ratio. Interest associated with the unused commitment is recorded to accrued expenses and other current and long-term liabilities on the consolidated balance sheet and paid out on a quarterly basis.

The Company is permitted to voluntarily prepay the Revolving Loans, in whole or in part, or reduce or terminate the Revolving Commitment, in each case, without premium or penalty. On any business day on which the total amount of outstanding Revolving Loans, Letters of Credit and Swingline Loans exceeds the total Revolving Commitment, the Company must prepay the Revolving Loans in an amount equal to such excess. The Company is not required to make mandatory prepayments under the 2022 Revolving Facility. As of December 31, 2025, there were no outstanding borrowings under the 2022 Revolving Facility.

The Company has the right to request an increase to the Revolving Commitment in an aggregate principal amount of up to the greater of $685.0 million (so that the total amount available would be approximately $1.44 billion) or 100% of consolidated

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

earnings before interest, taxes, depreciation and amortization for the four consecutive fiscal quarters most recently ended, plus additional amounts in certain circumstances (collectively, the "Incremental Cap"), minus certain incremental term loans made pursuant to specified incremental term loan commitments ("Incremental Term Loans"). The Company has the right to request Incremental Term Loans in an aggregate principal amount of up to the Incremental Cap less any incremental increases to the Revolving Commitment. Proceeds of Incremental Term Loans may be used for working capital and for other general corporate purposes and will bear interest at rates agreed between the Company and the lenders providing the Incremental Term Loans.

***2022 Revolving Facility Covenants***

The 2022 Revolving Facility contains a number of affirmative, negative and reporting covenants, as well as financial maintenance covenants pursuant to which the Company is required to be in quarterly compliance, measured on a trailing four quarter basis, with two financial covenants. The minimum interest coverage ratio must be at least 3.00 to 1.00. The maximum total net leverage ratio permitted by the financial covenant is 3.50 to 1.00, other than in connection with certain acquisitions, in which case, the maximum total net leverage ratio permitted can be increased to 4.00 to 1.00.

The 2022 Revolving Facility contains usual and customary restrictions on the ability of the Company and its subsidiaries to: (i) incur additional indebtedness (ii) create liens; (iii) consolidate, merge, sell or otherwise dispose of all or substantially all of its assets; (iv) sell certain assets; (v) pay dividends on, repurchase or make distributions in respect of capital stock or make other restricted payments; (vi) make certain investments; (vii) repay subordinated indebtedness prior to stated maturity; and (viii) enter into certain transactions with its affiliates.

Upon an event of default, the Administrative Agent (as defined in the 2022 Revolving Facility) will have the right to declare the loans and other obligations outstanding under the 2022 Revolving Facility immediately due and payable and all commitments immediately terminated.

The 2022 Revolving Facility is guaranteed by Lantheus Holdings, and certain subsidiaries of Lantheus Medical, including Progenics and Lantheus Real Estate, and obligations under the 2022 Revolving Facility are generally secured by first priority liens over substantially all of the assets of each of Lantheus Medical, Lantheus Holdings, and certain subsidiaries of Lantheus Medical, including Progenics and Lantheus Real Estate (subject to customary exclusions set forth in the transaction documents) owned as of December 2, 2022 or thereafter acquired.

***2.625% Convertible Senior Notes due December 2027***

On December 8, 2022, the Company issued $575.0 million in aggregate principal amount of 2.625% Convertible Senior Notes due December 2027 (the "Notes"), which includes $75.0 million in aggregate principal amount of Notes sold pursuant to the full exercise of the initial purchasers' option to purchase additional Notes. The Notes were issued under an indenture, dated as of December 8, 2022 (the "Indenture"), among the Company, Lantheus Medical, a wholly owned subsidiary of the Company, as guarantor, and U.S. Bank Trust Company, National Association, as Trustee. The net proceeds from the issuance of the Notes were approximately $557.8 million after deducting the initial purchasers' discounts and offering expenses payable by the Company.

The Notes are senior unsecured obligations of the Company. The Notes are fully and unconditionally guaranteed on a senior unsecured basis by the Guarantor. The Notes bear interest at a rate of 2.625% per year, payable semi-annually in arrears on June 15 and December 15 of each year, beginning on June 15, 2023, and will mature on December 15, 2027 unless earlier redeemed, repurchased or converted in accordance with their terms. The initial conversion rate for the Notes is 12.5291 shares of the Company's common stock per $1,000 in principal amount of Notes (which is equivalent to an initial conversion price of approximately $79.81 per share of the Company's common stock, representing an initial conversion premium of approximately 42.5% above the closing price of $56.01 per share of the Company's common stock on December 5, 2022). In no event shall the conversion rate per $1,000 in principal amount of Notes exceed 17.8539 shares of the Company's common stock. Prior to the close of business on the business day immediately preceding September 15, 2027, the Notes may be converted at the option of the holders only upon occurrence of specified events and during certain periods, and thereafter until the close of business on the business day immediately preceding the maturity date, the Notes may be converted at any time. The Company will satisfy any conversion by paying cash up to the aggregate principal amount of the Notes to be converted and by paying or delivering, as the case may be, cash, shares of the Company's common stock, or a combination of cash and shares of the Company's common stock, at its election, in respect of the remainder, if any, of its conversion obligation in excess of the aggregate principal amount of the Notes being converted. The Company may redeem for cash all or any portion of the Notes, at its option, if the closing sale price per share of the Company's common stock exceeds 130% of the conversion price of the Notes for a specified period of time. The redemption price will be equal to 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the redemption date.

The Company evaluated the Notes upon completion of the sale and concluded on the following features:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Conversion Feature:* The Company determined that the conversion feature qualifies for the classification of equity. As a result, the conversion feature should not be bifurcated as a derivative instrument and the Notes were accounted for as a single liability.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Redemption Features:* The redemption features were reviewed within the Notes and the Company determined that the redemption features are closely related to the Notes and as such should not be separately accounted for as a bifurcated derivative instrument.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•*Additional Interest Features:* The Notes may result in additional interest if the Company fails to timely file any document or report that the Company is required to file with the Securities and Exchange Commission pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). The Company will pay additional interest on the Notes at a rate equal to 0.25% to 0.50% per annum based on the principal amount of Notes outstanding for each day the Company failure to file has occurred or the Notes are not otherwise freely tradable. Further, if the Notes are assigned a restricted CUSIP number or the Notes are not otherwise freely tradable pursuant to Rule 144 under the Securities Act of 1933, as amended, by holders other than Company affiliates or holders that were Company affiliates at any time during the three months immediately preceding as of the 385<sup>th</sup> day after the last date of original issuance of the Notes, the Company will pay additional interest on the Notes at a rate equal to (i) 0.25% to 0.50% per annum based on the principal amount of Notes outstanding for each day until the restrictive legend has been removed from the Notes, the Notes are assigned an unrestricted CUSIP and the Notes are freely tradable. The Company concluded that the interest feature is unrelated to the credit risk and should be bifurcated from the Notes, however, the Company assessed the probabilities of triggering events occurring under these features and does not expect to trigger the aforementioned events. These events will continue to be monitored to determine whether the interest feature will be bifurcated if it has value.

Holders of the Notes may require the Company to repurchase their Notes upon the occurrence of a fundamental change prior to the maturity at a repurchase price equal to 100% of the principal amount thereof, plus accrued and unpaid interest to, but excluding, the date of repurchase. In connection with certain triggering events, the Company will, under certain circumstances, increase the conversion rate for holders of the Notes who elect to convert their Notes in connection with such corporate events.

During the fourth quarter of 2025, the closing price of the Company's common stock did not exceed 130% of the conversion price of the Notes for more than 20 trading days of the last 30 consecutive trading days of the quarter. As a result, the Notes are not convertible at the option of the holders of the Notes during the first quarter of 2026, the quarter immediately following the quarter when the conditions are met, as stated in the terms of the Notes. Because the Notes are not considered convertible under the terms of the Notes and pursuant to ASC 470-10, the Company classified the carrying value of the Notes as long-term debt, net and other borrowings on the Company's consolidated balance sheets as of December 31, 2025.

The Company recorded interest expense of approximately $15.1 million related to the Notes for the years ended December 31, 2025, 2024 and 2023, respectively.

**13. Stockholders' Equity and Stock-Based Compensation**

***Equity Incentive Plans***

As of December 31, 2025, the Company's approved equity incentive plans included the 2015 Equity Incentive Plan ("2015 Plan"), the 2013 Equity Incentive Plan ("2013 Plan"), and the 2008 Equity Incentive Plan ("2008 Plan"). These plans are administered by the Board of Directors (the "Board") and permit the granting of stock, stock options, stock appreciation rights, restricted stock, restricted stock units ("RSUs") and dividend equivalent rights to employees, officers, directors and consultants of the Company.

The Company has certain stock option and restricted stock awards outstanding under each of its equity incentive plans but, upon adoption of the 2015 Plan, the Company no longer grants new equity awards under its 2008 and 2013 Plans. The Company adopted its 2015 Plan in June 2015 and subsequently amended the plan in April 2016, April 2017, February and April 2019, April 2021, April 2022 and April 2024, October 2024 and April 2025. The aggregate shares of common stock reserved for issuance under the 2015 Plan, as amended, is 14,930,277 shares.

***Employee Stock Purchase Plan***

The Lantheus Holdings, Inc. 2023 Employee Stock Purchase Plan, (the "2023 ESPP") provides for the granting of up to 500,000 shares of the Company's common stock to eligible employees. The 2023 ESPP allows eligible employees to contribute up to 15% of their qualifying compensation toward the semi-annual purchase of the Company's common stock in March and September of each year, subject to an annual maximum dollar amount. The purchase price is the lesser of 85% of the fair market value of the stock on the last trading day of each Offering Period (as defined in the 2023 ESPP); or the first trading day of each Offering Period. The number of shares issued under the 2023 ESPP was 62,243 shares, 67,920 shares and 34,345 shares in 2025, 2024 and 2023, respectively. The Company calculates the fair value of the shares issued under the 2023 ESPP using the Black-Scholes model at the commencement of an Offering Period in March and September of each year and the related expense is recorded over the Offering Period.

***Stock-Based Compensation Expense***

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

Stock-based compensation expense recognized in the consolidated statements of operations is summarized below:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| Cost of goods sold | $14116 | $12670 | $9126 |
| Sales and marketing | 16557 | 13899 | 9500 |
| General and administrative | 41673 | 37945 | 24807 |
| Research and development | 13217 | 11879 | 7074 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total stock-based compensation expense | $85563 | $76393 | $50507 |

---

***Stock Options***

Stock option awards under the 2015 Plan are granted with an exercise price equal to the fair value of the Company's common stock at the date of grant. Stock option awards generally vest over three years; however, there are certain stock option awards with a vesting period of one year that are granted to certain employees and members of the Board. All option awards have a ten-year contractual term.

A summary of stock option activity for 2025 is presented below:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  |  |  | **Weighted-** |  |
|  |  |  | **Average** |  |
|  |  | **Weighted-** | **Remaining** | **Aggregate** |
|  | **Total** | **Average** | **Contractual** | **Intrinsic** |
|  | **Stock** | **Exercise** | **Term** | **Value** |
|  | **Options** | **Price** | **(Years)** | **($)** |
| Balance at January 1, 2025 | 1216746 | $60.92 |  |  |
| &nbsp;&nbsp;Options granted | 566899 | $86.14 |  |  |
| &nbsp;&nbsp;Options exercised | (171101) | $48.74 |  |  |
| &nbsp;&nbsp;Options cancelled and forfeited | (196516) | $83.34 |  |  |
| Outstanding at December 31, 2025 | 1416028 | $69.37 |  |  |
| Vested and expected to vest at December 31, 2025 | 1378843 | $69.07 | 7.5 | 10759578 |
| Exercisable at December 31, 2025 | 622283 | $57.29 | 5.9 | 8863264 |

---

The table below summarizes the key weighted-average assumptions used in valuing stock options granted:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
|  | **2025** | **2024** | **2023** |
| Expected volatility | 57.2% | 55.4% | 56.1% |
| Risk-free interest rate | 4.1% | 4.2% | 4.0% |
| Expected life (in years) | 5.9 | 6.0 | 6.0 |
| Expected dividend yield |  |  |  |

---

During the years ended December 31, 2025, 2024 and 2023, 171,101, 209,657 and 214,619 options were exercised having aggregate intrinsic values of $7.1 million, $12.1 million and $12.9 million, respectively. The weighted average grant-date fair value of stock options granted was $49.19, $39.26 and $43.18 for the years ended December 31, 2025, 2024 and 2023, respectively.

As of December 31, 2025, there was $24.1 million of unrecognized compensation expense related to outstanding stock options, which is expected to be recognized over a weighted-average period of 2.0 years.

***Restricted Stock Units***

A summary of RSU activity for 2025 is presented below:

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

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| | | |
|:---|:---|:---|
|  |  | **Weighted-** |
|  |  | **Average Grant** |
|  |  | **Date Fair Value Per** |
|  | **Shares** | **Share** |
| Nonvested balance at January 1, 2025 | 1271850 | $69.81 |
| &nbsp;&nbsp;Granted | 824105 | $84.92 |
| &nbsp;&nbsp;Vested | (622533) | $69.92 |
| &nbsp;&nbsp;Forfeited | (232485) | $78.89 |
| Nonvested balance at December 31, 2025 | 1240937 | $78.70 |

---

RSUs generally vest over three years; however, there are certain RSUs with a vesting period of one year that are granted to certain employees and members of the Board. As of December 31, 2025, there was $65.1 million of unrecognized compensation expense related to outstanding RSUs, which is expected to be recognized over a weighted-average period of 2.0 years.

The weighted average grant-date fair value for RSUs granted during the fiscal years ended December 31, 2025, 2024 and 2023 was $84.92, $70.56 and $74.38 per share, respectively. The total fair value of restricted stock vested in fiscal years 2025, 2024 and 2023 was $43.5 million, $42.5 million and $18.3 million, respectively.

***Total Stockholder Return Restricted Stock Awards***

During the years ended December 31, 2025, 2024 and 2023, the Company granted total stockholder return ("TSR") awards that include a three-year market condition where the performance measurement period is three years. Vesting of the TSR awards is based on the Company's level of attainment of specified TSR targets relative to the percentage appreciation of a specified index of companies for the respective three-year period and is also subject to the continued employment of the grantees. The number of shares that are earned over the performance period ranges from 0% to 200% of the initial award. The fair value of these awards is based on a Monte Carlo simulation valuation model with the following assumptions:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
|  | **2025** | **2024** | **2023** |
| Expected volatility | 57.5% | 57.4% | 52.8% |
| Risk-free interest rate | 4.0% | 4.3% | 4.6% |
| Expected life (in years) | 2.8 | 2.8 | 2.8 |
| Expected dividend yield |  |  |  |

---

A summary of TSR award activity for 2025 is presented below:

---

| | | |
|:---|:---|:---|
|  |  | **Weighted-** |
|  |  | **Average Grant** |
|  |  | **Date Fair Value Per** |
|  | **Shares** | **Share** |
| Nonvested balance at January 1, 2025 | 684684 | $109.38 |
| &nbsp;&nbsp;Granted | 394732 | $163.50 |
| &nbsp;&nbsp;Vested | (368714) | $98.11 |
| &nbsp;&nbsp;Forfeited | (151302) | $135.47 |
| Nonvested balance at December 31, 2025 | 559400 | $128.13 |

---

As of December 31, 2025, there was $26.9 million of unrecognized compensation expense related to outstanding performance restricted stock which is expected to be recognized over a weighted-average period of 1.8 years.

The weighted average grant-date fair value for TSR awards granted during the fiscal years ended December 31, 2025, 2024 and 2023 was $163.50, $105.87 and $127.75 per share, respectively. The total fair value of TSR awards vested in fiscal years 2025, 2024 and 2023 was $36.2 million, $33.6 million and $8.2 million, respectively.

***Modification of equity awards***

In the fourth quarter of 2024, the Company reviewed its current capabilities and skillsets and began implementing organizational changes deemed necessary to best position the Company to execute on its long-term strategy. These changes included transitioning approximately 75 employees out of the Company. In connection with these changes, the Company approved equity modifications that allowed grants of stock options and RSUs issued to those impacted by this event to continue to vest in 2024 and 2025 with any unvested stock option and RSU grants as of December 31, 2025 to be cancelled. TSR awards

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

granted to these individuals will continue to vest on their original vesting schedule but any shares issued will be issued in a pro-rated amount based on the time served during the performance period. The incremental stock-based compensation expense resulting from these modifications recognized in 2024 was $2.7 million. Total costs related to these organizational changes were approximately $12.1 million.

***Common Stock Repurchases***

On July 31, 2025, the Board authorized a program to repurchase up to $400.0 million of shares of the Company's common stock through December 31, 2027 (the "2025 Program"). The 2025 Program replaced the program authorized in November 2024 to repurchase up to $250.0 million of shares of the Company's common stock (the "2024 Program"), including the remaining unused amounts under the 2024 Program, so there could be no additional repurchases under the 2024 Program subsequent to July 31, 2025. During 2025, the Company repurchased 1.3 million shares for approximately $100.0 million under the 2024 Program for an average stock price of $79.37. During 2025, the Company repurchased a total of 3.5 million shares for an aggregate purchase price of approximately $200.0 million under the 2025 Program for an average stock price of $56.72. A total of approximately $200.0 million of shares of the Company's common stock remain available for repurchase under the 2025 Program.

**14. Leases** 

The Company entered into an operating lease agreement in February 2022 to lease office space in Bedford, Massachusetts ("Existing Premises"), under a lease agreement expiring in June 2031 (the "Existing Premises Lease"), and on May 4, 2023, the Company modified the Existing Premises Lease. The lease modification includes a lease of additional office and laboratory space at the Bedford location (the "Additional Premises") for a term of 15 years and 4 months and extends the term of the lease for the Existing Premises to be coterminous with the term of the lease for the Additional Premises. On October 7, 2024, the Company executed a second amendment to the Existing Premises Lease for additional space resulting in one additional operating lease, and as of December 31, 2025, this additional operating lease has not yet commenced. On February 14, 2025, the Company executed a third amendment to the Existing Premises Lease which included finalizing the conversion of the rent schedule from gross to triple net, resulting in a reduction of the Existing Premises Lease ROU asset and lease liability by $5.8 million. The future lease payments for this lease are approximately $17.0 million. The lease is expected to commence in 2026 and has a noncancellable lease term of 13.3 years.

On March 1, 2024, the Company transferred the sublease and completed the asset sale of the Somerset Facility. See Note 7, *"Property, Plan and Equipment, Net"* to these consolidated financial statements for further discussion on the sublease transfer.

Operating and finance lease assets and liabilities are as follows:

---

| | | | |
|:---|:---|:---|:---|
| **(in thousands)** | **Classification** | **December 31, 2025** | **December 31, 2024** |
| **Assets** |  |  |  |
| &nbsp;&nbsp;Operating | Other long-term assets | $30975 | $36083 |
| &nbsp;&nbsp;Finance | Property, plant and equipment, net | 1260 | 1564 |
| Total leased assets |  | $32235 | $37647 |
| **Liabilities** |  |  |  |
| Current |  |  |  |
| &nbsp;&nbsp;Operating | Accrued expenses and other current liabilities | $3804 | $1867 |
| &nbsp;&nbsp;Finance | Current portion of long-term debt and other borrowings | 738 | 974 |
| Noncurrent |  |  |  |
| &nbsp;&nbsp;Operating | Other long-term liabilities | 50016 | 53185 |
| &nbsp;&nbsp;Finance | Long-term debt and other borrowings, net of current portion | 511 | 671 |
| Total leased liabilities |  | $55069 | $56697 |

---

The components of lease expense were as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| Operating lease expense | $6138 | $6391 | $4627 |
| Finance lease expense |  |  |  |
| &nbsp;&nbsp;Amortization of ROU assets | 1103 | 962 | 795 |
| &nbsp;&nbsp;Interest on lease liabilities | 85 | 96 | 81 |
| Total lease expense | $7326 | $7449 | $5503 |

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

Other information related to leases is as follows:

---

| | | |
|:---|:---|:---|
|  | **December 31, 2025** | **December 31, 2024** |
| Weighted-average remaining lease term (years): |  |  |
| &nbsp;&nbsp;Operating leases | 11.2 | 13.1 |
| &nbsp;&nbsp;Finance leases | 1.8 | 1.9 |
| Weighted-average discount rate: |  |  |
| &nbsp;&nbsp;Operating leases | 7.5% | 7.5% |
| &nbsp;&nbsp;Finance leases | 5.5% | 6.0% |

---

---

| | | |
|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** |
| Cash paid for amounts included in the measurement of lease liabilities: |  |  |
| &nbsp;&nbsp;Operating cash flows from operating leases | $2289 | $4540 |
| &nbsp;&nbsp;Operating cash flows from finance leases | $85 | $96 |
| &nbsp;&nbsp;Financing cash flows from finance leases | $1106 | $318 |

---

Future minimum lease payments under non-cancellable leases as of December 31, 2025 were as follows:

---

| | | |
|:---|:---|:---|
| **(in thousands)** | **Operating Leases** | **Finance Leases** |
| 2026 | $7163 | $782 |
| 2027 | 8565 | 424 |
| 2028 | 7986 | 100 |
| 2029 | 7205 |  |
| 2030 | 6544 |  |
| Thereafter | 48686 |  |
| &nbsp;&nbsp;Total future minimum lease payments | 86149 | 1306 |
| Less: interest | 32330 | 57 |
| &nbsp;&nbsp;Total | $53819 | $1249 |

---

**15. Other Assets**

Other assets are comprised of the following:

---

| | | |
|:---|:---|:---|
|  | **December 31,** | **December 31,** |
| **(in thousands)** | **2025** | **2024** |
| Prepaid expenses | $20750 | $15406 |
| Other current assets | 650 | 953 |
| &nbsp;&nbsp;Total other current assets | $21400 | $16359 |
| ROU asset (Note 14) | $30975 | $36083 |
| Other long-term assets | 19069 | 8154 |
| &nbsp;&nbsp;Total other long-term assets | $50044 | $44237 |

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

**16. Net Income Per Common Share**

A summary of net income per common share is presented below:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands, except per share amounts)** | **2025** | **2024** | **2023** |
| Net income | $233559 | $312442 | $326661 |
| Basic weighted-average common shares outstanding | 67489 | 69199 | 68266 |
| &nbsp;&nbsp;Effect of dilutive stock options | 175 | 277 | 346 |
| &nbsp;&nbsp;Effect of dilutive restricted stock | 779 | 1433 | 1428 |
| &nbsp;&nbsp;Effect of convertible notes |  | 742 | 199 |
| Diluted weighted-average common shares outstanding | 68443 | 71651 | 70239 |
| Net income per common share: |  |  |  |
| &nbsp;&nbsp;Basic | $3.46 | $4.52 | $4.79 |
| &nbsp;&nbsp;Diluted | $3.41 | $4.36 | $4.65 |
| Antidilutive securities excluded from diluted net income per common share | 1552 | 891 | 421 |

---

***Impact of the Convertible Notes***

The Company considers shares issuable upon conversion of the Notes to be common stock equivalents and are only included in the calculation of diluted net income per share when their effect is dilutive. The Company has the option to settle the Notes through cash settlement or a combination of cash and share settlement provided that the principal is settled in cash and the conversion spread is settled in cash or shares as elected by the Company. The Company considers the Notes to be participating securities through the two-class method. Per the terms of the indenture governing the Notes, the Company determined that if a cash dividend is paid that is greater than the stock price at the time such dividend is declared, the holders of the Notes will receive cash on an if-converted basis. While this feature is considered to be a participating right, basic income attributable to common shareholders is only impacted if the Company's earnings per share exceeds the current share price, regardless of whether such dividend is declared. During the years ended December 31, 2025, 2024, and 2023, no such dividend was declared, and the Company's earnings per share did not exceed its share price. The Company is required to settle the principal amount of the Notes in cash upon conversion, and convertibility of the Notes is dependent upon the Company's share price. Therefore, the Company used the if-converted method for calculating the dilutive effect of the conversion option on diluted net income per share. The conversion option will have a dilutive impact on net income per share of Common Stock when the average price per share of the Company's Common Stock for a given period exceeds the conversion price of the Notes of $79.81 per share. See Note 12, *"Long-Term Debt and Other Borrowings, Net of Current Portion"* to these consolidated financial statement*s* for further discussion on the Notes.

**17. Commitments and Contingencies**

***Purchase Commitments***

The Company has entered into purchasing arrangements in which minimum quantities of goods or services have been committed to be purchased on an annual basis.

As of December 31, 2025, future payments required under purchase commitments are as follows:

---

| | |
|:---|:---|
| **(in thousands)** | **Amount** |
| 2026 | $14780 |
| 2027 | 8694 |
| 2028 |  |
| 2029 |  |
| 2030 and thereafter |  |
| &nbsp;&nbsp;Total | $23474 |

---

The Company has entered into agreements which contain certain percentage volume purchase requirements. The Company has excluded these future purchase commitments from the table above since there are no minimum purchase commitments or payments under these agreements.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

***License Agreements***

The Company has entered into license agreements in which fixed payments have been committed to be paid on an annual basis.

As of December 31, 2025, no future fixed payments are required under license agreements. The Company may be required to pay approximately $4.9 billion in contingent payments under the Company's license agreements. These contingent payments include potential milestone or contractual payment obligations contingent upon the achievement or occurrence of future milestones or events and the amounts and timing of such potential obligations are unknown or uncertain.

***Legal Proceedings***

From time to time, the Company is a party to various legal proceedings arising in the ordinary course of business. In addition, the Company has in the past been, and may in the future be, subject to investigations by governmental and regulatory authorities, which expose it to greater risks associated with litigation, regulatory or other proceedings, as a result of which the Company could be required to pay significant fines or penalties. The costs and outcome of litigation, regulatory or other proceedings cannot be predicted with certainty, and some lawsuits, claims, actions or proceedings may be disposed of unfavorably to the Company and could have a material adverse effect on the Company's business, financial condition, results of operations and cash flows. In addition, intellectual property disputes often have a risk of injunctive relief which, if imposed against the Company, could materially and adversely affect its financial condition or results of operations. If a matter is both probable to result in material liability and the amount of loss can be reasonably estimated, the Company estimates and discloses the possible material loss or range of loss. If such loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements.

On January 26, 2024, the Company was sued in the United States District Court for the District of Delaware by Advanced Accelerator Applications USA, Inc. and Advanced Accelerator Applications SA, each a Novartis entity, for patent infringement in response to the filing of our Abbreviated New Drug Application and Paragraph IV certification in connection with PNT2003, consistent with the process established by the Hatch-Waxman Act. In December 2025, the court conducted its trial. As of the date of this Form 10-K, the Company is currently waiting for the court to issue its decision. Because the outcome of litigation is uncertain, the Company cannot predict how or when this matter will ultimately be resolved.

On February 23, 2024, the Company filed a patent infringement lawsuit against a healthcare-related imaging software developer, and that developer filed a motion to dismiss the case based on grounds of invalidity for certain patents and failure to state a claim for infringement for other patents. The court dismissed the developer's motion to dismiss as to invalidity, and granted the motion as to certain allegations of infringement. Because the outcome of litigation is uncertain, the Company cannot predict how or when this matter will ultimately be resolved.

On September 9, 2025, an alleged stockholder initiated a putative securities class action against the Company in the United States District Court for the Southern District of New York, styled *Margolis v. Lantheus Holdings, Inc., et al.* The operative complaint also asserts claims against certain of the Company's named executives*.* A related action, styled *Indiana Pub. Ret. Sys. v. Lantheus Holdings, Inc., et al*., was filed in the same court on November 5, 2025. Those actions are now consolidated into a single putative securities class action (captioned *In re Lantheus Holdings, Inc. Secs. Litig.*), the theory of which is that the defendants made materially false or misleading statements (or omitted material facts) in violation of the Exchange Act. Under the operative scheduling order in the case, the lead plaintiff may file an amended complaint by March 13, 2026. Additionally, on December 17, 2025, another alleged stockholder of the Company filed a shareholder derivative action in the same court, styled *Lelchuk v. Heino et al.*, nominally on behalf of the Company and naming as defendants the current directors of the Board and the same officers named in the consolidated securities class action described above (a similar derivative complaint styled *Jones v. Markison et al.*, was previously filed on October 31, 2025 but was voluntarily withdrawn without prejudice). The derivative complaint largely repeats the allegations asserted in the consolidated securities class action, and asserts claims for alleged breaches of fiduciary duties, aiding and abetting breach of fiduciary duty, unjust enrichment, waste of corporate assets, and violations of the Exchange Act. The plaintiff seeks damages and other relief on behalf of the Company. Because the outcome of litigation is uncertain, the Company cannot predict how or when these matters will ultimately be resolved.

As of December 31, 2025, the Company was not a party to any other material ongoing legal proceedings and has determined that the aforementioned matters are not expected to have a material adverse effect on its business or consolidated financial results.

***Progenics*** 

In connection with Lantheus Medical's acquisition of Progenics in 2020, Lantheus Holdings issued 26,844,877 shares of Lantheus Holdings common stock and 86,630,633 contingent value rights (each a "CVR") tied to the financial performance of PYLARIFY, to former Progenics stockholders and option holders. The Company remitted its final aggregate payment obligation under and in full satisfaction of the CVRs in May 2023.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

**18. Benefit Plans**

***Defined Contribution Plan***

The Company maintains a qualified 401(k) plan (the "401(k) Plan") for its U.S. employees. The 401(k) Plan covers U.S. employees who meet certain eligibility requirements. Under the terms of the 401(k) Plan, the employees may elect to make tax-deferred contributions through payroll deductions within statutory and plan limits, and the Company may elect to make non-elective discretionary contributions. The Company may also make optional contributions to the 401(k) Plan for any plan year at its discretion.

Expense recognized by the Company for matching contributions made to the 401(k) Plan was $9.8 million, $5.8 million, and $4.1 million for the years ended December 31, 2025, 2024 and 2023, respectively.

***Nonqualified Deferred Compensation Plan***

In October 2024, the Company adopted the LDCP to provide key, highly-compensated employees and non-employee directors an additional opportunity for personal financial planning by allowing an option to defer a portion of their base salary and variable compensation each year. Under the LDCP, which is an elective nonqualified deferred compensation plan, employee participants are eligible to defer up to 80% of base salary and up to 80% of any bonus award beginning in 2025. For 2024, employee participants were not eligible to defer any base salary and could only defer up to 25% of their 2024 bonus award. Non-employee directors that are participants of the LDCP are eligible to defer up to 100% of their Board fees. Additionally, Company matching or employer contributions may be credited to the plan, although no such matching or employer contributions were made for 2024. Any matching or employer contributions cliff vest after the earlier of (i) five years, (ii) the participant reaching age 55, (iii) death, or (iv) disability. All amounts deferred or credited to a participant's account (the "Deferred Amounts") are held in a separate trust which was established by the Company to administer the LDCP. The LDCP assets held in trust by the Company to offset its obligation, which currently consist of COLI and could include mutual funds in future periods, are subject to the claims of the Company's creditors in the event that the Company becomes insolvent. Consequently, the trust qualifies as a grantor trust for income tax purposes, or a Rabbi Trust (the "Trust"). Amounts deferred (and earnings on those amounts) are generally distributed following termination of employment unless the participant has elected an earlier distribution date, which may be no earlier than January 1st of the second year following the year of deferral. Vested Company matching or employer contributions (and earnings on those amounts) are generally distributed following termination of employment. Participants can elect to receive distributions in a lump sum, in annual installments over a period of not more than ten years for a qualifying distribution event (as defined in the LDCP), or in annual installments over a period of not more than five years if distributions are made prior to termination of employment.

As of December 31, 2025, assets and liabilities held by the Trust were $1.1 million and $0.9 million, respectively, and were included in other long-term assets, accrued expenses and other current and long-term liabilities in the Company's consolidated balance sheets. There were no assets and liabilities held by the Trust as of December 31, 2024. Changes in the value of the LDCP assets and liabilities are charged to investment in equity securities - unrealized loss and to general and administrative expenses, respectively, in the Company's consolidated statements of operations and were *de minimis* in 2025.

**19. Acquisitions**

***Acquisition of Businesses***

*Evergreen Theragnostics, Inc.*

On April 1, 2025 (the " Evergreen Closing Date"), the Company acquired all the issued and outstanding shares of Evergreen by means of a statutory merger of a subsidiary of the Company with and into Evergreen, with Evergreen surviving as the Company's wholly-owned subsidiary (the "Evergreen Merger"), pursuant to the terms of the Evergreen Merger Agreement. Evergreen is a clinical-stage radiopharmaceutical company engaged in CDMO services as well as drug discovery and commercialization of proprietary products.

As consideration for the Evergreen Merger, the Company remitted an upfront payment of $276.4 million in cash. The upfront cash consideration included a $25.0 million milestone payment that was triggered prior to the Evergreen Closing Date, the cash settlement of the options and restricted stock units granted to certain Evergreen equity holders related to pre-acquisition services, which was recorded as a component of consideration transferred of $6.1 million, the settlement by the Company of the pre-existing Evergreen debt of $4.3 million, and the payment of transaction expenses paid by the Company on behalf of Evergreen of $11.6 million. In connection with the Evergreen Merger, certain equity awards that were outstanding and unvested prior to the acquisition became fully vested per terms of the merger agreement. The Company recognized $7.5 million of nonrecurring post-combination expense related to the acceleration and cash settlement of unvested historical Evergreen employee stock awards, which was recorded to operating expenses in the Company's consolidated statements of operations in 2025.

In the event of achievement of specified milestones, the Company would be required to pay up to an additional $727.5 million in cash pursuant to the Evergreen Merger Agreement. The potential remaining milestone payments are accounted for as

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

contingent consideration, the fair value of which is determined using a Monte-Carlo simulation for sales milestones and a probability-weighted DCF approach for development and commercialization milestones. The fair value of the total contingent consideration is included in other long-term liabilities in the Company's consolidated balance sheets at December 31, 2025.

The acquisition date fair value of the consideration transferred in the Evergreen Merger consisted of the following (in thousands):

---

| | |
|:---|:---|
| **<u>(in thousands)</u>** |  |
| Cash consideration | $276424 |
| Fair value of contingent consideration | 43042 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total purchase consideration | $319466 |

---

The Evergreen Merger was accounted for as an acquisition of a business under ASC 805, *"Business Combinations* ("ASC 805"),*"* which requires that assets acquired and liabilities assumed on the acquisition date be recognized at their fair values as of the acquisition date. While the Company uses its best estimates and assumptions as part of the purchase price allocation process to value the assets acquired and liabilities assumed, its estimates and assumptions are subject to change during the measurement period. Fair value estimates are based on a complex series of judgments about future events and uncertainties and relies on estimates and assumptions. The judgments used to determine the estimated fair value assigned to each class of assets acquired and liabilities assumed, as well as asset lives, can materially impact the Company's consolidated statements of operations.

As of December 31, 2025, the purchase accounting for the Evergreen Merger has not been finalized. As additional information becomes available, the Company may further revise its preliminary purchase price allocation during the remainder of the measurement period. The following table summarizes the fair values of assets acquired and liabilities assumed as of the date of acquisition:

---

| | |
|:---|:---|
| **<u>(in thousands)</u>** | **Estimated Fair Value** |
| **Assets acquired:** |  |
| Cash and cash equivalents | $8065 |
| Accounts receivable, other<sup>(1)</sup> | 2758 |
| Prepaid expenses and other current assets | 459 |
| Property, plant and equipment, net | 16711 |
| Intangibles<sup>(2)</sup> | 215000 |
| Deferred tax assets | 18112 |
| Other long-term assets | 1424 |
| **Total identifiable assets acquired** | 262529 |
| **Liabilities assumed:** |  |
| Accounts payable | (1964) |
| Accrued expenses and other current liabilities | (754) |
| Deferred tax liabilities | (55718) |
| Other long-term liabilities | (848) |
| **Total liabilities assumed** | (59284) |
| Net assets acquired | $203245 |
| Purchase consideration | $319466 |
| Goodwill<sup>(3)</sup> | $116221 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)The value approximates the gross contractual amount of accounts receivables. The contractual amount not expected to be collected is immaterial.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)Intangible assets acquired consisted of IPR&D. The estimated fair values of the IPR&D assets were determined based on the present values of the expected cash flows to be generated by the respective underlying assets. The Company used a discount rate of 11.5% and cash flows that have been probability adjusted to reflect the risks of product commercialization, which the Company believes are appropriate and representative of market participant assumptions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)The goodwill recognized is attributable to future technologies that are not separately identifiable that could potentially add to the currently developed and pipeline products and Evergreen's assembled workforce. Future technologies did not meet the criteria for recognition separately from goodwill because they are part of the future development and growth of the business. Goodwill of $116.2 million recognized in connection with the Evergreen Merger is not deductible for tax purposes.

Acquisition-related costs are not included as a component of consideration transferred but are expensed in the periods in which costs are incurred. The Company incurred $28.0 million of acquisition- and integration-related costs, including legal, accounting, compensation arrangements and other related fees in 2025. These costs are recorded in operating expenses in the consolidated statements of operations.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

The results of operations attributable to the Evergreen Merger for 2025 were not material. Pro forma information has not been included as this acquisition did not have a material impact on the Company's consolidated statements of operations in 2025.

*Life Molecular Imaging Limited.*

On July 21, 2025, Lantheus Radiopharm UK acquired the entire issued share capital of Life Molecular pursuant to the LMI Purchase Agreement with Life Medical, Life Healthcare Group Holdings Limited and Lantheus Medical as Lantheus Radiopharm UK's guarantor (such acquisition, the "LMI Acquisition"). Life Molecular possesses an Alzheimer's disease radiodiagnostic commercial infrastructure, R&D capabilities, and an established international footprint. The LMI Acquisition includes Neuraceq, an Alzheimer's disease radiodiagnostic. Neuraceq is commercially approved in the United States, Canada, the European Union, the United Kingdom, Switzerland, China, Japan, South Korea, and Taiwan. As consideration for the LMI Acquisition, the Company remitted an upfront payment of $355.2 million in cash to Life Medical. In November 2025, the Company received a $2.3 million working capital settlement from Life Medical.

In connection with the LMI Acquisition, the Company could be required to pay up to an additional $400.0 million in potential earn-out and milestone payments as a percentage of and upon achievement of specified net sales thresholds, respectively, of Neuraceq and other pipeline assets. Additionally, the Company assumed a contingent consideration liability owed to Piramal (see Note 4, *"Fair Value of Financial Instruments"*), which is excluded from purchase consideration.

The potential remaining earn-out and milestone payments are accounted for as contingent consideration, the fair value of which is determined using a Monte-Carlo simulation in a risk-neutral framework. The fair value of the total contingent consideration is included in other long-term liabilities in the Company's consolidated balance sheets at December 31, 2025.

The acquisition date fair value of the provisional consideration transferred in the LMI Acquisition consisted of the following:

---

| | | | |
|:---|:---|:---|:---|
| **<u>(in thousands)</u>** | **Preliminary Estimate** | **Measurement Period Adjustment** | **Final** |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash consideration | $355204 | $(2278) | $352926 |
| &nbsp;&nbsp;&nbsp;&nbsp;Fair value of contingent consideration | 27000 |  | 27000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total purchase consideration | $382204 | $(2278) | $379926 |

---

The LMI Acquisition was accounted for as an acquisition of a business under ASC 805, which requires that assets acquired and liabilities assumed be recognized at their fair values as of the acquisition date. While the Company uses its best estimates and assumptions as part of the purchase price allocation process to value the assets acquired and liabilities assumed, its estimates and assumptions are subject to change during the measurement period. Fair value estimates are based on a complex series of judgments about future events and uncertainties and rely heavily on estimates and assumptions. The judgments used to determine the estimated fair value assigned to each class of assets acquired and liabilities assumed, as well as asset lives, can materially impact the Company's consolidated statements of operations.

As of December 31, 2025, the purchase accounting for the LMI Acquisition has not been finalized. As additional information becomes available, the Company may further revise its preliminary purchase price allocation during the remainder of the measurement period. Besides tax implications of the purchase price allocation, the final allocation may result in additional

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

changes to other assets and liabilities. The following table summarizes the fair values of assets acquired and liabilities assumed as of the date of acquisition:

---

| | |
|:---|:---|
| **<u>(in thousands)</u>** | **Estimated Fair Value** |
| **Assets acquired:** |  |
| Cash and cash equivalents | $46193 |
| Accounts receivable, other<sup>(1)</sup> | 25123 |
| Inventory | 1125 |
| Prepaid expenses and other current assets | 1974 |
| Property, plant and equipment, net | 4979 |
| Intangibles<sup>(2)</sup> | 394000 |
| Deferred tax assets | 15993 |
| Other long-term assets | 11506 |
| **Total identifiable assets acquired** | $500893 |
| **Liabilities assumed:** |  |
| Accounts payable | $(5715) |
| Accrued expenses and other current liabilities | (25964) |
| Deferred tax liabilities | (72570) |
| Other long-term liabilities | (79904) |
| **Total liabilities assumed** | (184153) |
| Net assets acquired | $316740 |
| Purchase consideration | $379926 |
| Goodwill<sup>(3)</sup> | $63186 |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)The value approximates the gross contractual amount of accounts receivables. The contractual amount not expected to be collected is immaterial.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)Intangible assets acquired consisted of IPR&D and currently marketed products. The estimated fair values of the IPR&D and currently marketed product assets were determined based on the present values of the expected cash flows to be generated by the respective underlying assets. The Company used a discount rate of 23.5% and 23.0% for IPR&D and currently marketed products, respectively. IPR&D cash flows have been probability-adjusted to reflect the risks of technical and regulatory success of the products, which the Company believes are appropriate and representative of market participant assumptions. The Company estimates that the acquired currently marketed product asset has a useful life of 10.5 years.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)The goodwill recognized is attributable to future technologies that are not separately identifiable that could potentially add to the currently developed and pipeline products and Life Molecular's assembled workforce. Future technologies did not meet the criteria for recognition separately from goodwill because they are part of the future development and growth of the business. Goodwill of $63.2 million recognized in connection with the Life Molecular Merger is not deductible for tax purposes.

Acquisition-related costs are not included as a component of consideration transferred but are expensed in the periods in which costs are incurred. The Company incurred $36.7 million of acquisition- and integration-related costs, including legal, accounting, compensation arrangements and other related fees in 2025. These costs are recorded in operating expenses in the consolidated statements of operations.

The results of operations attributable to the LMI Acquisition for 2025 were not material. Pro forma information has not been included as this acquisition did not have a material impact on the Company's consolidated statements of operations in 2025.

***Acquisition of Assets***

*Exclusive License for PNT2003 & PNT2002*

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

Under the terms of the PNT2003 License Agreement, the Company paid POINT Biopharma Global Inc. ("POINT") an upfront cash payment of $10.0 million, and could pay up to an additional $34.5 million in milestone payments upon the achievement of specified U.S. and ex-U.S. regulatory milestones related to PNT2003. POINT is also eligible to receive up to $275.0 million in sales milestone payments upon the achievement of specified annual sales thresholds of PNT2003.

Under the terms of the PNT2002 License Agreement, the Company paid POINT an upfront cash payment of $250.0 million, and could pay up to an additional $281.0 million in milestone payments upon the achievement of specified U.S. and ex-U.S. regulatory milestones. POINT is also eligible to receive up to $1.3 billion in sales milestone payments upon the achievement of specified annual sales thresholds of PNT2002.

Additionally, the Company will pay POINT royalties on net sales, beyond certain financial thresholds and subject to conditions, of 15% for PNT2003 and 20% for PNT2002. Costs of IPR&D projects acquired as part of an asset acquisition that have no alternative future use are expensed when incurred, and therefore, a charge of $260.0 million was recognized in research and development expenses during the year ended December 31, 2022.

*MK-6240*

On February 6, 2023, the Company acquired Cerveau. Cerveau holds the rights under a license agreement to develop and commercialize MK-6240, a registrational stage F-18-labeled PET imaging agent that targets tau tangles in Alzheimer's disease. The Company determined that upon review of its acquisition of Cerveau, the transaction did not meet the definition of a business combination and is therefore treated as an asset acquisition.

In February 2023, the Company made an upfront payment of approximately $35.3 million to the stockholders of Cerveau (the "Cerveau Stockholders") and paid the Cerveau Stockholders an additional $10.0 million in May 2023 upon the successful completion of a technology transfer. The Company could pay up to an additional $51.0 million in milestone payments upon achievement of specified U.S. regulatory milestones related to MK-6240. The Cerveau Stockholders are also eligible to receive up to $1.2 billion in sales milestone payments upon the achievement of specified annual commercial sales thresholds of MK-6240, as well as up to $13.5 million in research revenue milestones upon achievement of specified annual research revenue thresholds. Additionally, the Company will pay to the Cerveau Stockholders up to double-digit royalty payments for research revenue and commercial sales. Research revenue is derived from existing partnerships with pharmaceutical companies and academic institutions that use MK-6240 in clinical trials. The purchase agreement pursuant to which the Company purchased Cerveau specified, among other things, that certain Cerveau Stockholders provide transition and clinical development services for a prescribed time following the closing of the transaction.

*Strategic Agreements with Perspective Therapeutics, Inc.*

On January 8, 2024, the Company entered into an agreement with Perspective to participate in the next qualified financing to purchase Perspective Shares. On January 22, 2024, the Company purchased 56,342,355 Perspective Shares, representing 11.39% of the outstanding Perspective Shares, at the fair market offering price of $0.37 per share. Included within the agreement is a covenant which allows for the Company to designate one observer to Perspective's board of directors. The observer has the option to attend any or all board meetings in a nonvoting capacity and the right to receive any board materials, except under certain instances where attorney-client privilege is necessary, where the material relates to a business or contractual relationship with the Company, to avoid bona fide conflict of interest, exposure of trade secrets or relating to a change of control transaction. The Company also purchased 60,431,039 Perspective Shares at a fair market purchase price of $0.95 per share as an investor in a private placement transaction on March 6, 2024, which resulted in the Company holding a cumulative 19.90% of the outstanding Perspective Shares (or 17.35% on a fully diluted basis) after giving effect to the closing of the private placement transaction. The Company's ownership has been further diluted since the original investment was made. The Company does not have the ability to exercise significant influence over operating and financial policies of Perspective based on its level of ownership of Perspective and because the Company's board observer has no voting rights and there is otherwise no participation in policy-making processes, no interchange of managerial personnel, and no sharing of technology between the Company and Perspective.

Also effective January 8, 2024, the Company obtained the following options and rights from Perspective for an aggregate upfront payment of $28.0 million in cash:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•An exclusive option from Perspective to negotiate for an exclusive license under the rights of Perspective and its affiliates to Perspective's Pb212-VMT-α-NET, a clinical stage alpha therapy developed for the treatment of neuroendocrine tumors, to develop, manufacture, commercialize and otherwise exploit the VMT-α-NET Product.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•A right to co-fund the investigational new drug ("IND") application enabling studies for early-stage therapeutic candidates targeting prostate-specific membrane antigen and gastrin releasing peptide receptor and, prior to IND application filing, a right to negotiate for an exclusive license to such candidates.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•A right of first offer and last look protections for any third party merger and acquisition transactions involving Perspective for a twelve-month period.

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

None of these options and rights have been exercised as of December 31, 2025.

Costs of IPR&D projects acquired as part of an asset acquisition that have no alternative future use are expensed when incurred, and therefore, a charge of $28.0 million was recognized in R&D expenses during the first quarter of 2024.

Also effective January 8, 2024, the Company entered into an agreement with Perspective to transfer the Somerset Facility and the associated assets at the Somerset Facility for $8.0 million. The transfer of the sublease and completion of the asset sale occurred on March 1, 2024 at which time the Company had no further continuing legal obligations related to the lease. See Note 7, *"Property, Plant and Equipment, Net"* to these consolidated financial statements for additional details.

On June 14, 2024 Perspective effected a 1-for-10 reverse stock split, after which the Company held 11,677,339 shares of Perspective's common stock.

*Radiopharm Theranostics Limited*

On June 15, 2024, the Company entered into an agreement with Radiopharm to acquire all of Radiopharm's rights to two licensed preclinical assets for an upfront payment of $2.0 million. The Company acquired global exclusive rights to both a leucine-rich repeat-containing protein 15 ("LRRC15")-targeted radiotherapeutic and to a Trophoblast cell surface antigen-2 ("TROP2")-targeted radiodiagnostic. LRRC15, which is also known as LNTH-2403, is a potential first-in-class, highly specific monoclonal antibody radio-conjugate with both Orphan Drug and Rare Pediatric Disease designations from the U.S. Food and Drug Administration ("FDA") for the treatment of osteosarcoma. The agent is designed to target the surrounding tumor micro-environment cells expressing the protein potentially treating a broad range of cancers. The TROP2-targeted nanobody radio-conjugate, which is also known as LNTH-2404, is designed to target TROP2, an intracellular calcium signal transducer that is overexpressed in various types of adenocarcinomas with minimal expression in normal tissues and is associated with tumor aggressiveness, poor prognosis and drug resistance.

In connection with this acquisition, the Company assumed the underlying license agreements related to the two preclinical assets, together with their respective milestone and royalty payment obligations. The Company could pay up to an additional $20.0 million in milestone payments upon achievement of specified regulatory milestones. The Company could also pay up to an additional $6.5 million in sales milestone payments upon the achievement of specified annual commercial sales thresholds in the event the Company pursues commercialization, as well as royalty payments for commercial sales. Costs of IPR&D projects acquired as part of an asset acquisition that have no alternative future use are expensed when incurred, and therefore, a charge of $2.0 million was recognized in research and development expenses during 2024 related to the Radiopharm transaction.

During the third quarter of 2024, the Company purchased 149,625,180 shares of Radiopharm common stock ("Radiopharm Shares"), for an aggregate purchase price of approximately $5.0 million. During 2025, the Company purchased an aggregate additional 388,333,333 Radiopharm Shares for an aggregate purchase price of approximately $10.0 million. The Company does not have the ability to exercise significant influence over operating and financial policies of Radiopharm based on its ownership and because there is no participation in policy-making processes, no interchange of managerial personnel, and no sharing of technology between the Company and Radiopharm. See Note 4, *"Fair Value of Financial Instruments,"* for more information on the Company's investment in Radiopharm.

*Acquisition of NAV-4694*

On June 18, 2024, the Company acquired Meilleur, including its asset NAV-4694, an investigational late-stage F-18-labeled PET imaging agent that targets beta amyloids in Alzheimer's disease. The Company determined that upon review of the Meilleur acquisition, the transaction did not meet the definition of a business combination and is therefore treated as an asset acquisition.

The Company made an upfront payment of approximately $32.9 million to the Meilleur Stockholders on June 18, 2024 and paid an additional $10.0 million in August 2024 after the successful completion of a technology transfer. The Company could pay up to an additional $43.0 million in milestone payments upon achievement of specified U.S. regulatory milestones related to NAV-4694. The Meilleur Stockholders are also eligible to receive up to $830.0 million in sales milestone payments upon the achievement of specified annual commercial sales thresholds of NAV-4694 as well as up to $4.0 million in remaining research milestones upon achievement of specified clinical studies at academic institutions. Additionally, in May 2025, the Company paid AstraZeneca AB ("AstraZeneca") a $10.0 million one-time, non-refundable upfront payment to reduce the future commercial royalty obligations owed to AstraZeneca, pursuant to a NAV-4694 license agreement between AstraZeneca and Meilleur.

Research revenue is derived from existing partnerships with pharmaceutical companies and academic institutions that use NAV-4694 in clinical trials. Additionally, the Company could pay the Meilleur Stockholders up to double-digit royalty payments for research revenue and commercial sales.

*RM2 Asset Purchase*

On July 3, 2024, the Company acquired from Life Molecular the global rights to RM2, a gastrin-releasing peptide receptor-targeting agent, including the associated novel, clinical-stage radiotherapeutic and radiodiagnostic pair, referred to as

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

177Lu-DOTA-RM2 and 68Ga-DOTA-RM2, for an upfront payment of $35.0 million plus a $1.0 million payment made prior to the acquisition (the "RM2 Asset Purchase"), pursuant to the Sublicense, Development and Collaboration Agreement, by and between the Company and Life Molecular, dated as of June 27, 2024 (the "RM2 Sublicense Agreement"). Pursuant to the RM2 Sublicense Agreement, the Company has incurred €10.0 million in milestones achievements related to regulatory activities, and could have paid up to an additional €127.5 million in regulatory and development milestone payments upon achievement of clinical trial thresholds and approvals in different regions, up to €280 million in net sales milestones if products were commercialized and met certain sales thresholds, and royalties on net sales of RM2.

Costs of IPR&D projects acquired as part of an asset acquisition that have no alternative future use are expensed when incurred, and therefore, charges of $11.2 million in 2025 and $36.0 million in the third quarter of 2024 were recognized in R&D expenses related to the RM2 Asset Purchase.

In connection with the LMI Acquisition, the RM2 Sublicense Agreement was amended to (i) reduce the contingent regulatory and development milestones by €45.0 million; (ii) assign the right to future payments from Life Molecular to its former parent, Life Medical; and (iii) eliminate certain other non-substantive rights contained in the RM2 Sublicense Agreement (the "RM2 Amendment"). The Company determined that the RM2 Amendment did not constitute settlement of a pre-existing relationship in accordance with ASC 805, and concluded that the amendment represented a modification to the RM2 Sublicense Agreement, whereby the Company did not reacquire any incremental rights or assets. Accordingly, the Company will continue to account for the RM2 Sublicense Agreement as an asset acquisition, separate from the LMI Acquisition.

**20. Segment Information**

The Company operates as one business segment. The results of this operating segment are regularly reviewed by the Company's chief operating decision maker ("CODM"), the Chief Executive Officer. The CODM does not manage any part of the Company separately, and the allocation of resources and assessment of performance are based on the Company's consolidated operating results. In order to evaluate the reportable segment's performance, the CODM uses net income and gross margin based on the consolidated statements of operations. The CODM uses net income to monitor budget and forecast versus actual results in assessing segment performance and to evaluate income generated from segment assets in deciding how to allocate resources. The measure of segment assets is reported on the consolidated balance sheets as total consolidated assets.

Significant segment expenses reviewed by the CODM on a monthly basis include sales and marketing, general and administrative and R&D expenses as reported in the Company's consolidated statements of operations. However, the CODM reviews R&D expenses in more detail for certain expenses related to the Company's development of new products and clinical programs. The approximate disaggregated amounts that comprise R&D expenses regularly reviewed by the CODM are as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,** | **Year Ended December 31,** | **Year Ended December 31,** |
| **(in thousands)** | **2025** | **2024** | **2023** |
| Program third-party research and development expenses | $42158 | $31957 | $8332 |
| Other research and development expenses<sup>(1)</sup> | 135150 | 136141 | 69375 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total research and development expenses | $177308 | $168098 | $77707 |

---

------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)Other R&D expenses consist of all other R&D costs incurred for the benefit of multiple R&D programs, including legal, employee costs, depreciation, information technology, other facility-bases expenses and other third-party costs.

***Geographic Information***

See Note 3, *"Revenue from Contracts with Customers"* for a disaggregation of revenue by geographic region. Long-lived assets by geographic region, which are based on asset location, are not presented because it is impracticable to do so.

**21. Subsequent Events**

***Sale of SPECT Business***

On January 1, 2026, the Company completed the sale of its SPECT business to SHINE, a wholly-owned subsidiary of Illuminated Holdings, Inc. The Company is entitled to receive total consideration of up to $155.0 million, consisting of cash, a convertible installment note, a term note and contingent earnout payments. Under the terms of the definitive agreement, SHINE acquired the assets and liabilities associated with the SPECT business, including its approved products (TechneLite, NEUROLITE, Xenon Xe-133 Gas, and Cardiolite), the portion of the North Billerica, Massachusetts campus that manufactured the SPECT products and the SPECT-related Canadian operations. The Company expects to recognize a gain on sale of its SPECT

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**Lantheus Holdings, Inc.**

**Notes to Consolidated Financial Statements (Continued)**

business in the first quarter of 2026. See Note 8, *"Assets and Liabilities Held for Sale"* for more information on the sale of the Company's SPECT business.

***Strategic Program***

On February 19, 2026, the Board approved a strategic program to simplify and streamline the Company's operations so it can focus mainly on its radiodiagnostic business and pursue value-maximizing alternatives for its radiotherapeutic assets. As a result of the program, the Company expects to incur charges in 2026. The Company is unable to quantify the amount of such charges at this time.

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**Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure**

Not applicable.

**Item 9A. Controls and Procedures**

**Disclosure Controls and Procedures**

The Company's management, with the participation of the Company's Chief Executive Officer ("CEO") and Chief Financial Officer ("CFO"), its principal executive officer and principal financial officer, respectively, has evaluated the effectiveness of the Company's disclosure controls and procedures as defined in Rule 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Based on that evaluation, the Company's CEO and CFO concluded that the Company's disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) were effective as of the period covered by this report.

**Management's Annual Report on Internal Control Over Financial Reporting**

Our management, with the participation of our CEO and CFO, is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act. Our internal control system is designed to provide reasonable assurance to our management and Board of Directors regarding the preparation and fair presentation of published financial statements.

Our management assessed the effectiveness of our internal control over financial reporting as of December 31, 2025. In making its assessment of internal control over financial reporting, our management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission in Internal Control—Integrated Framework (2013). Based on this assessment, management concluded that, as of December 31, 2025, our internal control over financial reporting was effective.

Consistent with guidance issued by the Securities and Exchange Commission that an assessment of a recently acquired business may be omitted from management's report on internal control over financial reporting in the year of acquisition, management excluded an assessment of the effectiveness of our internal control over financial reporting related to the two businesses we acquired during the year ended December 31, 2025, as disclosed in Note 19, "*Acquisitions,"* to our consolidated financial statements and which we determined were not material to our consolidated financial statements as of December 31, 2025.

Deloitte & Touche LLP, an independent registered public accounting firm that audited our financial statements for the fiscal year ended December 31, 2025, included in this report, has issued an attestation report on the effectiveness of our internal control over financial reporting. This report is set forth below:

**REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM**

To the Stockholders and the Board of Directors of Lantheus Holdings, Inc.

**Opinion on Internal Control over Financial Reporting**

We have audited the internal control over financial reporting of Lantheus Holdings, Inc. and subsidiaries (the "Company") as of December 31, 2025, 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 Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on criteria established in *Internal Control — Integrated Framework (2013)* issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2025, of the Company and our report dated February 26, 2026, expressed an unqualified opinion on those financial statements.

As described in *Management's Annual Report on Internal Control Over Financial Reporting*, management excluded from its assessment of the effectiveness of internal control over financial reporting related to the statutory merger of Evergreen Theragnostics, Inc. ("Evergreen Merger") and the acquisition of Life Molecular Imaging Limited ("LMI Acquisition"), which were acquired during the year ended December 31, 2025 as disclosed in Note 19, *"Acquisitions"* to the consolidated financial statements and management determined were not material to the consolidated financial statements as of December 31, 2025. Accordingly, our audit did not include the internal control over financial reporting associated with the Evergreen Merger or LMI Acquisition.

**Basis for Opinion**

The Company's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying *Management's Annual* 

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*Report on Internal Control Over Financial Reporting*. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company 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 audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

**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 (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) 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 (3) 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.

/s/ Deloitte & Touche LLP

Boston, Massachusetts

February 26, 2026

**Changes in Internal Controls Over Financial Reporting**

There were no changes in our internal control over financial reporting for the quarter ended December 31, 2025 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

We are continually monitoring and assessing the geopolitical environment to determine any potential impact on the design and operating effectiveness of our internal controls over financial reporting.

**Item 9B. Other Information**

On December 2, 2025, Samuel R. Leno, a member of our Board, entered into a trading plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act (the "10b5-1 Plan"). The 10b5-1 Plan provides for the potential sale of up to 14,307 shares of our common stock between March 4, 2026 and March 13, 2026.

**Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections**

Not Applicable.

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**PART III**

**Item 10. Directors, Executive Officers and Corporate Governance**

Pursuant to Section 406 of the Sarbanes-Oxley Act of 2002, we have adopted a code of conduct and ethics (our "Code of Conduct") for all of our employees, including our CEO, CFO and other senior financial officers, or persons performing similar functions, and each of the non-employee directors on our Board. Our Code of Conduct is currently available on our website, www.lantheus.com. The information on our website is not part of, and is not incorporated into, this Annual Report on Form 10-K ("Form 10-K"). We intend to provide any required disclosure of any amendment to or waiver from such code that applies to our CEO, CFO and other senior financial officers, or persons performing similar functions, in a Current Report on Form 8-K filed with the Securities and Exchange Commission ("SEC").

We have adopted a Policy on Insider Trading and Communications with the Public (the "Insider Trading Policy") that governs the purchase, sale and other dispositions of our securities by directors, officers, employees, and designated individuals. The Insider Trading Policy is designed to ensure full compliance with all applicable insider trading laws, rules and regulations. A copy of this policy is incorporated by reference as Exhibit 19.1 to this Form 10-K.

The additional information required with respect to this item will be incorporated herein by reference to our Definitive Proxy Statement for our 2026 Annual Meeting of Stockholders or an amendment of this report to be filed with the SEC no later than 120 days after the close of our year ended December 31, 2025.

**Item 11. Executive Compensation**

The information required with respect to this item will be incorporated herein by reference to our Definitive Proxy Statement for our 2026 Annual Meeting of Stockholders or an amendment of this report to be filed with the Securities and Exchange Commission no later than 120 days after the close of our year ended December 31, 2025.

**Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters**

The information required with respect to this item will be incorporated herein by reference to our Definitive Proxy Statement for our 2026 Annual Meeting of Stockholders or an amendment of this report to be filed with the Securities and Exchange Commission no later than 120 days after the close of our year ended December 31, 2025.

**Item 13. Certain Relationships and Related Transactions, and Director Independence**

The information required with respect to this item will be incorporated herein by reference to our Definitive Proxy Statement for our 2026 Annual Meeting of Stockholders or an amendment of this report to be filed with the Securities and Exchange Commission no later than 120 days after the close of our year ended December 31, 2025.

**Item 14. Principal Accountant Fees and Services**

The information required with respect to this item will be incorporated herein by reference to our Definitive Proxy Statement for our 2026 Annual Meeting of Stockholders or an amendment of this report to be filed with the Securities and Exchange Commission no later than 120 days after the close of our year ended December 31, 2025.

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**PART IV**

**Item 15. Exhibits and Financial Statement Schedules**

**(a)(1) Financial Statements**

The following consolidated financial statements of Lantheus Holdings, Inc. are filed as part of this Annual Report on Form 10-K under Part II, Item 8. Financial Statements and Supplementary Data:

---

| | |
|:---|:---|
|  | **Page** |
| [<u>Report of Independent Registered Public Accounting Firm</u>](#report_of_independent_reg) (PCAOB ID No. 34) | 82 |
| [<u>Consolidated Balance Sheets</u>](#consolidated_balance_sheets) | 84 |
| [<u>Consolidated Statements of Operations</u>](#consolidated_statements_of_operations) | 85 |
| [<u>Consolidated Statements of Comprehensive Income</u>](#consolidated_statements_of_comprehensive) | 86 |
| [<u>Consolidated Statements of Changes in Stockholders' Equity</u>](#consolidated_statements_of_changes_in_st) | 87 |
| [<u>Consolidated Statements of Cash Flows</u>](#consolidated_statements_of_cash_flows) | 88 |
| [<u>Notes to Consolidated Financial Statements</u>](#notes_to_consolidated_financial_stat) | 90 |

---

**(a)(2) Schedules**

All schedules are omitted because they are not applicable, not required, or because the required information is included in the consolidated financial statements or notes thereto.

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**(a)(3) Exhibits**

**EXHIBIT INDEX**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | | **Incorporated by Reference** | **Incorporated by Reference** | **Incorporated by Reference** | **Incorporated by Reference** |
| <br>**Exhibit**<br>**Number** | <br>**Description of Exhibits** | **Form** | **File**<br>**Number** | **Exhibit** | **Filing Date** |
| 2.1††# | [<u>Agreement and Plan of Merger, dated as of January 27, 2025, by and among Lantheus Medical Imaging, Inc., Project Hazel Merger Sub, Inc., Evergreen Theragnostics, Inc., Shareholder Representative Services LLC and, for purposes of Section 11.2 only, Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312525013841/d925405dex21.htm) | 8-K | 001-36569 | 2.1 | January 28, 2025 |
| 3.1 | [<u>Amended and Restated Certificate of Incorporation of Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312518139044/d653114dex31.htm) | 8-K | 001-36569 | 3.1 | April 27, 2018 |
| 3.2 | [<u>Amended and Restated Bylaws of Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312525112812/d20698dex32.htm) | 8-K | 001-36569 | 3.2 | May 5, 2025 |
| 4.1 | [<u>Common Stock Certificate.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312515241429/d38431dex41.htm) | 8-K | 001-36569 | 4.1 | June 30, 2015 |
| 4.2\* | [<u>Description of Registrant's Securities</u>](lnth-ex4_2.htm) |  |  |  |  |
| 4.3 | [<u>Indenture, dated as of December 8, 2022, between Lantheus Holdings, Inc., as Issuer, Lantheus Medical Imaging, Inc., as Guarantor, and U.S. Bank Trust Company, National Association, as Trustee</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312522301105/d421073dex41.htm) | 8-K | 001-36569 | 4.1 | December 8, 2022 |
| 10.1+ | [<u>2015 Equity Incentive Plan of Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312515233801/d946596dex41.htm) | S-8 | 333-205211 | 4.1 | June 26, 2015 |
| 10.2+ | [<u>Form of 2015 Restricted Stock Agreement of Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312515223914/d819826dex1038.htm) | S-1 | 333-196998 | 10.38 | June 24, 2015 |
| 10.3+ | [<u>Form of 2015 Option Award Agreement of Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312515223914/d819826dex1039.htm) | S-1 | 333-196998 | 10.39 | June 24, 2015 |
| 10.4+ | [<u>Amendment to Lantheus Holdings, Inc. 2015 Equity Incentive Plan.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312516563659/d159370dex101.htm) | 8-K | 001-36569 | 10.1 | April 28, 2016 |
| 10.5+ | [<u>Second Amendment to Lantheus Holdings, Inc. 2015 Equity Incentive Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312517148200/d356566dex101.htm) | 8-K | 001-36569 | 10.1 | April 28, 2017 |
| 10.6+ | [<u>Form of Severance Agreement (executives with existing employment agreements).</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828019001574/ex1070severanceagreementwi.htm) | 10-K | 001-36569 | 10.70 | February 20, 2019 |
| 10.7+ | [<u>Form of Severance Agreement (executives without existing employment agreements).</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828019001574/ex1071severanceagreementwi.htm) | 10-K | 001-36569 | 10.71 | February 20, 2019 |
| 10.8+ | [<u>Third Amendment to Lantheus Holdings, Inc. 2015 Equity Incentive Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000152103619000007/lnth10q-033119ex101.htm) | 10-Q | 001-36569 | 10.1 | April 30, 2019 |
| 10.9+ | [<u>Fourth Amendment to Lantheus Holdings, Inc. 2015 Equity Incentive Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312519122459/d736490dex101.htm) | 10-Q | 001-36569 | 10.2 | July 25, 2019 |
| 10.10+ | [<u>Lantheus Holdings, Inc. 2005 Stock Incentive Plan (f/k/a Progenics Pharmaceuticals, Inc. 2005 Stock Incentive Plan).</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312520181025/d944243dex44.htm) | S-8 | 333-239491 | 4.4 | June 26, 2020 |
| 10.11+ | [<u>Lantheus Holdings, Inc. 2018 Performance Incentive Plan (f/k/a Progenics Pharmaceuticals, Inc. 2018 Performance Incentive Plan).</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312520181025/d944243dex45.htm) | S-8 | 333-239491 | 4.5 | June 26, 2020 |
| 10.12 | [<u>Lease, dated December 31, 2015, between the Registrant and WTC TOWER 1 LLC.</u>](https://www.sec.gov/Archives/edgar/data/835887/000083588716000118/ex10_1.htm) | 8-K | 000-23143 | 10.46 (21) | January 5, 2016 |
| 10.13+ | [<u>Fifth Amendment to Lantheus Holdings, Inc. 2015 Equity Incentive Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312521140557/d183259dex101.htm) | 8-K | 001-36569 | 10.1 | April 29, 2021 |
| 10.14†† | [<u>Manufacturing and Supply Agreement, effective as of February 23, 2022, by and between Lantheus Medical Imaging, Inc. and Jubilant HollisterStier LLC.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828022011291/lnth10q-033122ex101.htm) | 10-Q | 001-36569 | 10.1 | April 29, 2022 |
| 10.15 | [<u>Form of Restricted Stock Unit Award Agreement (Employee Time-Based Vesting) of Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828022011291/lnth10q-033122ex102.htm) | 10-Q | 001-36569 | 10.2 | April 29, 2022 |
| 10.16 | [<u>Form of Restricted Stock Unit Award Agreement (Relative Total Shareholder Return Performance-Based Vesting) of Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828022011291/lnth10q-033122ex103.htm) | 10-Q | 001-36569 | 10.3 | April 29, 2022 |
| 10.17 | [<u>Form of Stock Option Award Agreement (Time Vesting) of Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828022011291/lnth10q-033122ex104.htm) | 10-Q | 001-36569 | 10.4 | April 29, 2022 |
| 10.18 | [<u>Sixth Amendment to Lantheus Holdings, Inc. 2015 Equity Incentive Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312522136860/d600777dex101.htm) | 8-K | 001-36569 | 10.1 | May 2, 2022 |
| 10.19†† | [<u>License and Collaboration Agreement, dated as of November 11, 2022, by and between Point Biopharma, Inc., and Lantheus Two, LLC.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312522283698/d378760dex101.htm) | 8-K | 000-36569 | 10.1 | November 14, 2022 |
| 10.20 | [<u>Credit Agreement dated as of December 2, 2022 by and among Citizens Bank, N.A., as administrative agent and collateral agent, each of the lenders from time to time party thereto, Lantheus Medical Imaging, Inc., as borrower, and Lantheus Holdings, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312522297984/d418526dex101.htm) | 8-K | 001-36569 | 10.1 | December 5, 2022 |
| 10.21+ | [<u>Lantheus Holdings, Inc. 2023 Employee Stock Purchase Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312523130535/d423856dex101.htm) | 8-K | 001-36569 | 10.1 | May 1, 2023 |
| 10.22†† | [<u>Office Lease by and between Lantheus Medical and 201 Burlington Road Owner, LLC dated February 14, 2022 (the "Lease"); as amended by the First Amendment To Lease dated May 4, 2023</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828023027015/lnth10q-063023ex101.htm) | 10-Q | 001-36569 | 10.1 | August 3, 2023 |
| 10.23 | [<u>First Amendment to License and Collaboration Agreement (PNT-2002), dated as of January 31, 2024, by and between POINT Biopharma, Inc. and Lantheus Two, LLC and Lantheus Medical Imaging, Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828024019798/lnth10q-033124ex101.htm) | 10-Q | 001-36569 | 10.1 | May 2, 2024 |
| 10.24 | [<u>Seventh Amendment to Lantheus Holdings, Inc. 2015 Equity Incentive Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312524122683/d821920dex101.htm) | 8-K | 001-36569 | 10.1 | April 29, 2024 |
| 10.25†† | [<u>Second Amendment to Lease dated as of October 3, 2024</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828025007970/ex1032-secondamendmenttole.htm) | 10-K | 001-36569 | 10.32 | February 26, 2025 |
| 10.26 | [<u>Eighth Amendment to Lantheus Holdings, Inc. 2015 Equity Incentive Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828024045459/lnth10q-093024ex101.htm) | 10-Q | 001-36569 | 10.1 | November 6, 2024 |
| 10.27 | [<u>First Amendment to Credit Agreement, dated December 19, 2024, among Lantheus Medical Imaging Inc., Lantheus Holdings, Inc., the lenders and other parties party thereto and Citizens Bank N.A., as administrative and collateral agent</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312524284219/d922033dex101.htm) | 8-K | 001-36569 | 10.1 | December 23, 2024 |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | | **Incorporated by Reference** | **Incorporated by Reference** | **Incorporated by Reference** | **Incorporated by Reference** |
| <br>**Exhibit**<br>**Number** | <br>**Description of Exhibits** | **Form** | **File**<br>**Number** | **Exhibit** | **Filing Date** |
| 10.28+ | [<u>Form of Indemnification Agreement</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828025007970/ex1035-formofindemnificati.htm) | 10-K | 001-36569 | 10.35 | February 26, 2025 |
| 10.29+ | [<u>Nonqualified Deferred Compensation Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828025007970/ex1036-nonqualifieddeferre.htm) | 10-K | 001-36569 | 10.36 | February 26, 2025 |
| 10.30†† | [<u>Sale and Purchase Agreement, dated as of January 12, 2025, by and among Life Medical Group Limited and Life Healthcare Group Holdings Limited and Lantheus Radiopharmaceuticals UK Limited and Lantheus Medical Imaging Inc.</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828025007970/ex1037-saleandpurchaseagre.htm) | 10-K | 001-36569 | 10.37 | February 26, 2025 |
| 10.31 | [<u>Third Amendment to Lease dated as of February 14, 2025, by and between Lantheus Medical and 201 Burlington Road Owner, LLC</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828025022872/lnth10q-033125ex101.htm) | 10-Q | 001-36569 | 10.1 | May 7, 2025 |
| 10.32+ | [<u>Ninth Amendment to Lantheus Holdings, Inc. 2015 Equity Incentive Plan</u>](https://www.sec.gov/Archives/edgar/data/1521036/000095017025103544/lnth-ex10_1.htm) | 10-Q | 001-36569 | 10.1 | August 6, 2025 |
| 10.33# | [<u>Deed of Amendment and Restatement Relating to a Sale and Purchase Agreement entered into July 21, 2025, by and among Life Medical Group Limited and Life Healthcare Group Holdings Limited and Lantheus</u>](https://www.sec.gov/Archives/edgar/data/1521036/000119312525268113/lnth-ex10_1.htm) | 10-Q | 001-36569 | 10.1 | November 6, 2025 |
| 10.34+\* | [<u>Consulting Agreement, effective as of November 6, 2025, by and between Brian Markison and Lantheus Medical Imaging Inc.</u>](lnth-ex10_34.htm) |  |  |  |  |
| 10.35+\* | [<u>Retirement and Separation Agreement, effective as of November 6, 2025, by and between Brian Markison and Lantheus Medical Imaging Inc.</u>](lnth-ex10_35.htm) |  |  |  |  |
| 10.36+\* | [<u>Employment Agreement, effective November 7, 2025, by and between Lantheus Medical Imaging, Inc. and Mary Anne Heino</u>](lnth-ex10_36.htm) |  |  |  |  |
| 19.1 | [<u>Policy on Insider Trading and Communications with the Public</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828025007970/ex191insidertradingpolicy0.htm) | 10-K | 001-36569 | 19.1 | February 26, 2025 |
| 21.1\* | [<u>Subsidiaries of Lantheus Holdings, Inc.</u>](lnth-ex21_1.htm) |  |  |  |  |
| 23.1\* | [<u>Consent of Independent Registered Public Accounting Firm.</u>](lnth-ex23_1.htm) |  |  |  |  |
| 24.1\* | <u>Power of Attorney (included as part of the signature page hereto).</u> |  |  |  |  |
| 31.1\* | [<u>Certification of Chief Executive Officer pursuant to Exchange Act Rule 13a-14(a).</u>](lnth-ex31_1.htm) |  |  |  |  |
| 31.2\* | [<u>Certification of Chief Financial Officer pursuant to Exchange Act Rule 13a-14(a).</u>](lnth-ex31_2.htm) |  |  |  |  |
| 32.1\*\* | [<u>Certification pursuant to 18 U.S.C. Section 1350.</u>](lnth-ex32_1.htm) |  |  |  |  |
| 97.1 | [<u>Amended and Restated Executive Compensation Clawback Policy</u>](https://www.sec.gov/Archives/edgar/data/1521036/000162828025007970/ex971lantheus-executivecom.htm) | 10-K | 001-36569 | 97.1 | February 26, 2025 |
| 101.INS\* | Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document |  |  |  |  |
| 101.SCH\* | Inline XBRL Taxonomy Extension Schema Document With Embedded Linkbase Documents |  |  |  |  |
| 104\* | Cover Page Interactive Data File (embedded within the Inline XBRL document) |  |  |  |  |

---

------

\* Filed herewith.

\*\* Furnished herewith.

†† Portions of this exhibit have been omitted for confidential treatment pursuant to Item 601(b)(10)(iv) of Regulation S-K.

+ Indicates management contract or compensatory plan or arrangement.

† Confidential treatment requested as to certain portions, which portions have been filed separately with the Securities and Exchange Commission.

# Pursuant to Item 601(b)(2)(ii) of Regulation S-K promulgated by the SEC, certain portions of this exhibit have been redacted because the Company customarily and actually treats such omitted information as private or confidential and because such omitted information is not material.

**Item 16. Form 10-K Summary**

None.

------

[**<u>**Table of Contents**</u>**](#toc_page)

**SIGNATURES**

Pursuant to the requirements of Section 13 or 15(d) 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.

---

| | |
|:---|:---|
| **LANTHEUS HOLDINGS, INC.** | **LANTHEUS HOLDINGS, INC.** |
| By: | /S/ MARY ANNE HEINO |
| Name: | Mary Anne Heino |
| Title: | Chief Executive Officer and Chairperson of the Board |
| Date: | February 26, 2026 |

---

We, the undersigned directors and officers of Lantheus Holdings, Inc., hereby severally constitute and appoint Mary Anne Heino, Robert J. Marshall, Jr. and Daniel Niedzwiecki, and each of them individually, with full powers of substitution and resubstitution, our true and lawful attorneys, with full powers to them and each of them to sign for us, in our names and in the capacities indicated below, any and all amendments to this Annual Report on Form 10-K filed with the SEC, granting unto said attorneys-in-fact and agents, each acting alone, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming that any such attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
| **Signature** | **Title** | **Date** |
| /S/ MARY ANNE HEINO | Chief Executive Officer and <br>Chairperson of the Board<br>(Principal Executive Officer) | February 26, 2026 |
| Mary Anne Heino | Chief Executive Officer and <br>Chairperson of the Board<br>(Principal Executive Officer) |  |
| /S/ ROBERT J. MARSHALL, JR. | Chief Financial Officer and Treasurer<br>(Principal Financial Officer) | February 26, 2026 |
| Robert J. Marshall, Jr. | Chief Financial Officer and Treasurer<br>(Principal Financial Officer) |  |
| /S/ KIMBERLY BROWN | Chief Accounting Officer<br>(Principal Accounting Officer) | February 26, 2026 |
| Kimberly Brown | Chief Accounting Officer<br>(Principal Accounting Officer) |  |
| /S/ MINNIE BAYLOR-HENRY | Director | February 26, 2026 |
| Minnie Baylor-Henry | Director |  |
| /S/ GÉRARD BER | Director | February 26, 2026 |
| Gérard Ber | Director |  |
| /S/ JULIE EASTLAND | Director | February 26, 2026 |
| Julie Eastland | Director |  |
| /S/ SAMUEL R. LENO | Director | February 26, 2026 |
| Samuel R. Leno | Director |  |
| /S/ HEINZ MÄUSLI | Director | February 26, 2026 |
| Heinz Mäusli | Director |  |
| /S/ JULIE H. MCHUGH | Director | February 26, 2026 |
| Julie H. McHugh | Director |  |
| /S/ DR. PHUONG KHANH MORROW | Director | February 26, 2026 |
| Dr. Phuong Khanh Morrow | Director |  |
| /S/ GARY J. PRUDEN | Director | February 26, 2026 |
| Gary J. Pruden | Director |  |
| /S/ DR. JAMES H. THRALL | Director | February 26, 2026 |
| Dr. James H. Thrall | Director |  |

---

------

## Exhibit 4.2

**Exhibit 4.2**

**DESCRIPTION OF THE REGISTRANT'S SECURITIES**

**REGISTERED PURSUANT TO SECTION 12 OF THE**

**SECURITIES EXCHANGE ACT OF 1934**

The following description sets forth certain material terms and provisions of Lantheus Holdings, Inc.'s (the "Company", "us", "we", or "our") securities that are registered under Section 12 of the Securities Exchange Act of 1934, as amended.

**DESCRIPTION OF CAPITAL STOCK**

The following summary description sets forth some of the general terms and provisions of the capital stock. Because this is a summary description, it does not contain all of the information that may be important to you. For a more detailed description of the preferred and common stock, you should refer to the provisions of our amended and restated certificate of incorporation and our bylaws, as amended and restated, each of which is an exhibit to the Annual Report on Form 10-K to which this description is an exhibit.

**General**

Our authorized capital stock consists of 250,000,000 shares of common stock, par value $0.01 per share, and 25,000,000 shares of preferred stock, par value $0.01 per share. The shares of common stock currently outstanding are fully paid and nonassessable. No shares of preferred stock are currently outstanding.

**Common Stock** 

Holders of our common stock are entitled to the following rights:

***Voting Rights*** 

Each share of common stock entitles the holder to one vote with respect to each matter presented to our stockholders on which the holders of common stock are entitled to vote; provided, however, that the Board of Directors may issue or grant shares of common stock that are subject to vesting or forfeiture and that restrict or eliminate voting rights with respect to such shares until any such vesting criteria is satisfied or such forfeiture provisions lapse. Our common stock votes as a single class on all matters relating to the election and removal of directors on our Board of Directors and as provided by law. Holders of our common stock do not have cumulative voting rights. Except as otherwise provided in our amended and restated certificate of incorporation or our bylaws or required by law, all matters to be voted on by our stockholders must be approved by a majority of the shares present in person or by proxy at the meeting and entitled to vote on the subject matter.

***Dividend Rights*** 

Holders of common stock share equally on a per share basis in any dividend declared by our Board of Directors, subject to any preferential rights of the holders of any outstanding preferred stock.

***Liquidation Rights*** 

In the event of any voluntary or involuntary liquidation, dissolution or winding up of our affairs, holders of our common stock would be entitled to share ratably in our assets that are legally available for distribution to stockholders after payment of liabilities. If we have any preferred stock outstanding at that time, holders of the preferred stock may be entitled to distribution and/or liquidation preferences. In either case, we must pay the applicable distribution to the holders of our preferred stock before we may pay distributions to the holders of our common stock.

***Other Rights*** 

------

Our stockholders have no subscription privileges. Our common stock does not entitle its holders to preemptive rights for additional shares. All of the outstanding shares of our common stock are fully paid and nonassessable. The rights, preferences and privileges of the holders of our common stock are subject to the rights of the holders of shares of any series of preferred stock which we may issue.

**Preferred Stock** 

Our Board of Directors is authorized to provide for the issuance of preferred stock in one or more series and to fix the preferences, powers and relative, participating, optional or other special rights, and qualifications, limitations or restrictions thereof, including the dividend rate, conversion rights, voting rights, redemption rights and liquidation preference and to fix the number of shares to be included in any such series without any further vote or action by our stockholders. Any preferred stock so issued may rank senior to our common stock with respect to the payment of dividends or amounts upon liquidation, dissolution or winding up, or both. In addition, any such shares of preferred stock may have class or series voting rights. The issuance of preferred stock may have the effect of delaying, deferring or preventing a change in control of our Company without further action by the stockholders and may adversely affect the voting and other rights of the holders of our common stock.

**Anti-takeover Provisions** 

Our amended and restated certificate of incorporation and bylaws contain provisions that delay, defer or discourage transactions involving an actual or potential change in control of us or change in our management. We expect that these provisions, which are summarized below, will discourage coercive takeover practices or inadequate takeover bids. These provisions are also designed to encourage persons seeking to acquire control of us to first negotiate with our Board of Directors, which we believe may result in an improvement of the terms of any such acquisition in favor of our stockholders. However, they also give our board the power to discourage transactions that some stockholders may favor, including transactions in which stockholders might otherwise receive a premium for their shares or transactions that our stockholders might otherwise deem to be in their best interests. Accordingly, these provisions could adversely affect the price of our common stock.

***Classified Board*** 

Our amended and restated certificate of incorporation provides that our board is comprised of such number of directors as may be fixed from time to time by resolution of at least a majority of our Board of Directors then in office and that our board is divided into three classes, with one class being elected at each annual meeting of stockholders. Each director serves a three-year term, with expiration staggered according to class.

The classification of our board could make it more difficult for a third-party to acquire, or discourage a third party from seeking to acquire, control of our Company.

***Requirements for Advance Notification of Stockholder Meetings, Nominations and Proposals*** 

Our bylaws provide that special meetings of the stockholders may be called only upon the request of a majority of our board or upon the request of the chairman of our Board of Directors or our Chief Executive Officer.

Our bylaws establish advance notice procedures with respect to stockholder proposals and the nomination of candidates for election as directors, other than nominations made by or at the direction of our board or a committee of our board. In order for any matter to be "properly brought" before a meeting, a stockholder will have to comply with the advance notice requirements of directors. Our bylaws allow our Board of Directors to adopt such rules and regulations for the conduct of the meetings as they may deem proper, which may be delegated to a chairperson of the meeting and which may have the effect of precluding the conduct of certain business at a meeting if the rules and regulations are not followed. These provisions may also defer, delay or discourage a potential acquirer from conducting a solicitation of proxies to elect the acquirer's own slate of directors or otherwise attempting to obtain control of our Company.

------

***No Stockholder Action by Written Consent*** 

Our amended and restated certificate of incorporation provides that, subject to the rights of any holders of preferred stock to act by written consent instead of a meeting, stockholder action may be taken only at an annual meeting or special meeting of stockholders and may not be taken by written consent instead of a meeting, unless the action to be taken by written consent of stockholders and the taking of this action by written consent has been unanimously approved in advance by our board. Failure to satisfy any of the requirements for a stockholder meeting could delay, prevent or invalidate stockholder action.

***Section 203 of the Delaware General Corporation Law, as amended ("DGCL")*** 

We are subject to Section 203 of the DGCL, which regulates acquisitions of some Delaware corporations. In general, Section 203 prohibits, with some exceptions, a publicly held Delaware corporation from engaging in a "business combination" with an "interested stockholder" for a period of three years following the date of the transaction in which the person became an interested stockholder, unless:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•the board of directors of the corporation approved the business combination or the other transaction in which the person became an interested stockholder prior to the date of the business combination or other transaction;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•upon consummation of the transaction that resulted in the person becoming an interested stockholder, the person owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced, excluding shares owned by persons who are directors and also officers of the corporation and shares issued under employee stock plans under which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•on or subsequent to the date the person became an interested stockholder, the board of directors of the corporation approved the business combination and the stockholders of the corporation authorized the business combination at an annual or special meeting of stockholders by the affirmative vote of at least 66⅔% of the outstanding stock of the corporation not owned by the interested stockholder.

Section 203 of the DGCL generally defines a "business combination" to include any of the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•any merger or consolidation involving the corporation and the interested stockholder;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•any sale, transfer, pledge or other disposition of 10% or more of the corporation's assets or outstanding stock involving the interested stockholder;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•in general, any transaction that results in the issuance or transfer by the corporation of any of its stock to the interested stockholder;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•any transaction involving the corporation that has the effect of increasing the proportionate share of its stock owned by the interested stockholder; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•the receipt by the interested stockholder of the benefit of any loans, advances, guarantees, pledges or other financial benefits provided by or through the corporation.

In general, Section 203 defines an "interested stockholder" as any person who, together with the person's affiliates and associates, owns, or within three years prior to the determination of interested stockholder status did own, 15% or more of a corporation's voting stock.

Section 203 of the DGCL could depress our stock price and delay, discourage or prohibit transactions not approved in advance by our board of directors, such as takeover attempts that might otherwise involve the payment to our stockholders of a premium over the market price of our common stock.

**Exclusive Forum** 

Our amended and restated certificate of incorporation provides that, unless we consent in writing in advance to the selection of an alternative forum, the Delaware Court of Chancery shall, to the fullest extent permitted by law, be the sole and exclusive forum for (i) any derivative action or proceeding brought on our behalf, (ii) any action asserting a claim of breach of a fiduciary

------

duty owed by, or any wrongdoing by, any of our directors, officers or employees to our stockholders, (iii) any action asserting a claim arising pursuant to any provision of the DGCL, our amended and restated certificate of incorporation (including as it may be amended from time to time) or our bylaws, (iv) any action to interpret, apply, enforce or determine the validity of our amended and restated certificate of incorporation or our bylaws, or (v) any action asserting a claim governed by the internal affairs doctrine. Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock shall be deemed to have notice of and to have consented to the provisions of our amended and restated certificate of incorporation described above. This choice of forum provision may limit a stockholder's ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers or other employees, which may discourage lawsuits with respect to such claims. However, it is possible that a court could rule that this provision is unenforceable or inapplicable.

**Listing** 

Our common stock is listed on the NASDAQ Global Market under the symbol "LNTH."

**Transfer Agent and Registrar** 

The transfer agent and registrar for our common stock is Computershare Trust Company, N.A.

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## Exhibit 10.34

![img86569674_0.gif](img86569674_0.gif)

**EXHIBIT 10.34**

**Execution Version**

**Personal and Confidential**

**CONSULTING AGREEMENT**

This **Consulting Agreement** is made by and between Lantheus Medical Imaging, Inc. (together with its affiliates, the "***Company***") and Brian Markison ("***you***") (each of the Company and you, individually, a "***Party***" and, collectively, the "***Parties***"), effective as November 6, 2025 (the "***Effective Date***") (this "***Agreement***").

Each of the Parties, intending to be legally bound, agree as follows:

**1.** **Consulting Services Engagement**. Commencing on January 1, 2026 (the "***Start Date***"), the Company hereby engages you as an independent contractor to provide, and you agree to so provide, during the Consulting Period (as defined below), the consulting services described on <u>Exhibit A</u> in accordance with the provisions of this Agreement (collectively, the "***Services***").

**2.** **Compensation and Reimbursement**.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)Subject to your (x) execution and delivery of your retirement and separation agreement with the Company (as amended, modified or supplemented from time to time by mutual agreement of the Parties, the "***Retirement and Separation Agreement***") and (y) meeting your obligations under this Agreement, the Company will provide you with the following compensation and reimbursement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)<u>For the Services</u>. In consideration for you agreeing to provide and providing the Services in accordance with this Agreement: you will be entitled to the Consulting Fee described in <u>Exhibit B</u> for Services; and (B) the Company will reimburse you for your reasonable, pre-approved and documented out-of-pocket expenses incurred in the performance of those Services during the Consulting Period in accordance with its policies.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)<u>For the Restrictive Covenants</u>. In consideration for you agreeing to and abiding by Section 4 (*Restrictive Covenants*) in accordance with this Agreement: you will be entitled to the portion of the Consulting Fee described in <u>Exhibit B</u> in exchange for such consideration.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)The Parties acknowledge and agree that, except for the Parties entering into and you abiding by this Agreement, you would not otherwise be entitled to or eligible for a consulting relationship with the Company or the compensation provided in this Section 2 (*Compensation and Reimbursement*). You also agree that all of this consideration was negotiated at arms' length and constitutes "mutually agreed upon consideration" and "fair and reasonable consideration" for the Services and for the noncompetition covenants set forth in Section 4 (*Restrictive Covenants*), as may be required by the Massachusetts Noncompetition Agreement Act or other applicable law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)In addition, the Company agrees to indemnify you pursuant to the terms and conditions of the Indemnification Agreement (as defined below), such that rendering the Services under and in accordance with this Agreement qualifies as "Corporate Status," as defined in the

------

![img86569674_1.gif](img86569674_1.gif)

****

<br> Indemnification Agreement and the six-year time period under Section 13(a) of the Indemnification Agreement shall run from the period when you cease rendering Services under and in accordance with this Agreement.

**3.** **Taxes**. All taxes on compensation or benefits earned under this Agreement will be your responsibility; provided that the Company will withhold any taxes and remit those on your behalf to appropriate tax authorities if and the extent the Company is required to do so by applicable law.

**4.** **Restrictive Covenants.** You agree to abide by (and the compensation set forth in Section 2(a)(ii) (*Compensation and Reimbursement for the Restrictive Covenants*) is expressly conditioned upon your agreement to and compliance with) the Employee Non-Disclosure, Assignment of Inventions and Non-Solicitation Agreement entered into with the Company, dated as of January 19, 2024 (as amended, modified or supplemented from time to time by mutual agreement of the Parties, collectively, the "***NDA***"), and the Employee Restrictive Covenant Agreement entered into with the Company, dated as of January 19, 2024 (as amended, modified or supplemented from time to time by mutual agreement of the Parties, collectively, the "***RCA***") (the NDA and the RCA, collectively, the "***Restrictive Covenants***"), all of which are incorporated into this Agreement by reference as if set forth verbatim, including during the duration of the Consulting Period (as defined herein). Any breach of the Restrictive Covenants, as amended by this Section 4, will constitute a material breach of this Agreement, entitling the Company to terminate this Agreement pursuant to Section 9(a)(iii) (*Termination for Material Breach*).

**5.** **Term of Consulting Services Engagement**. Subject to this Agreement not becoming null and void under Section 2 (*Compensation and Reimbursement*), the engagement for Services under this Agreement is effective as of the Start Date and will continue in full force and effect until March 31, 2026, unless terminated earlier in accordance with Section 9 (*Termination*) (the "***Initial Consulting Period***"). The Consulting Period may be extended by mutual agreement of the Parties prior to the end of the then-current Consulting Period (if extended, the "***Extended Consulting Period***" and, together with the Initial Consulting Period, the "***Consulting Period***"), on the terms described herein.

**6.** **Independent Contractor**. Any Services you perform will be as an independent contractor and not as an employee or agent of the Company. As such, from and after the Effective Date, you will not be entitled to receive, nor will rendering Services make you eligible to participate in, any benefits or privileges given or extended to the Company's employees, other than those to which you may be entitled based on your retirement from the Company as documented in the Retirement and Separation Agreement between the Parties. The Parties further acknowledge and agree that you may not enter into any obligation on the Company's behalf. When providing Services under this Agreement, you will hold yourself out to be only an advisor or consultant to (but not an employee of) the Company.

**7.** **Representations, Warranties and Covenants**. You represent, warrant and covenant to the Company that: (a) you will use your best efforts to perform all Services with at least the same degree of diligence and care, and in a manner at least commensurate with the same professional standards, as exhibited during your employment by the Company; (b) you will comply with all laws, regulations and orders and stock exchange requirements; (c) you have not been debarred and, to the best of your

Page 2 of SECTIONPAGES6

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![img86569674_1.gif](img86569674_1.gif)

****

<br> knowledge, are not under consideration to be debarred, and will not be debarred, by the U.S. Food and Drug Administration from working in or providing consulting services to any pharmaceutical or biotechnology company under the Generic Drug Enforcement Act of 1992; (d) you are under no contractual or other obligation, restriction or arrangement that breaches, interferes or is inconsistent with, or presents a conflict of interest relating to, this Agreement or your performance of the Services; and (e) during the Consulting Period and thereafter, you will not enter into any agreement or other obligation, restriction or arrangement, either written or oral, that interferes or is inconsistent with, or presents a conflict of interest relating to, your obligations under this Agreement or your performance of the Services. You agree not to disclose to any individual or entity any of the terms of this Agreement (including its Exhibits) or information related to the negotiation or terms of this Agreement; <u>provided</u>, <u>however</u>, that you will not be prohibited from making disclosures to your spouse or domestic partner, attorney or tax advisor or for the sole purpose of disclosing the Restrictive Covenants to a potential employer.

**8.** **Records**. You will keep accurate records relating to the Services, including quarterly overview records of general activities conducted relating to the Services, which you will produce to the Company on a quarterly basis (via email to the General Counsel is sufficient). All such records, whether paper or electronic, will be the sole property of the Company and subject to the Company's review at a mutually agreeable time. Promptly upon the termination or expiration of this Agreement, all such records, whether they were prepared by you solely or jointly with others, any other information and property of the Company and any materials provided to you by the Company, or its designee will be turned over by you to the Company.

**9.** **Termination**.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)This Agreement may be terminated, subject to the payment provisions set forth in Exhibit B, (i) by you, with or without cause, upon at least twenty (20) business days' prior written notice to the Company, (ii) by the Company, without cause, upon at least twenty (20) business days' prior written notice to you, or, (iii) by the Company, in the event you materially breach any provision of this Agreement (including the Restrictive Covenants), immediately upon written notice to you; in all cases, written notice by email is sufficient. In the event this Agreement is terminated, the Company will be under no further obligation to you other than as set forth in Section 2(c) (*Indemnification*) and <u>Exhibit B</u>.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)In the event of expiration or termination of this Agreement, you agree to provide the Company as soon as practicable with all electronic devices, passwords, records (as specified in Section 8 (*Records*)), reports, materials, deliverables and other information in tangible form in whatever state of completion as of the date of expiration or termination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)All rights granted to the Company under this Agreement that are expressly indicated to survive termination or expiration of this Agreement or by their nature should survive the termination or expiration of this Agreement will survive the termination or expiration of this Agreement, including Section 2(d) (*Indemnification*), Section 3 (*Taxes*), Section 4 (*Restrictive Covenants*), Section 7 (*Representations, Warranties and Covenants*), Section 8 (*Records*), Section 9 (*Termination*), Section 10 (*Entire Agreement; Amendment*), Section 11 (*Successors* 

Page 3 of SECTIONPAGES6

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![img86569674_1.gif](img86569674_1.gif)

****

<br> *and Assigns*), Section 12 (*Choice of Law*), Section 14 (*Interpretational Matter*) and Section 15 (*Electronic Signatures*).

**10.** **Entire Agreement; Amendment.** This Agreement (together with all of its exhibits, including the NDA and RCA) contains the entire understanding of the Parties with respect to the subject matter covered thereby and supersede all prior agreements or understandings except as explicitly set forth in this Agreement. For the avoidance of doubt: (a) nothing in this Agreement supersedes (i) the Retirement and Separation Agreement, (ii) the Restrictive Covenants or (iii) the Indemnification Agreement by and among the Company, Lantheus Holdings, Inc. and you, dated as of June 29, 2015 (the "***Indemnification Agreement***"), except as the Indemnification Agreement is modified by Section 2(c) (*Indemnification*). The Parties may, from time to time, during the Consulting Period, modify any of the provisions of this Agreement in a writing duly executed by the Parties.

**11.** **Successors and Assigns**. This Agreement is binding upon the Parties and their successors, but is not otherwise assignable.

**12.** **Choice of Law**. This Agreement will be construed, governed, interpreted and applied in accordance with the laws of Massachusetts, without giving effect to the conflicts of laws provision thereof. Any disputes arising between the Parties relating to this Agreement will be subject to the exclusive jurisdiction and venue of the state and federal courts located in the Commonwealth of Massachusetts, and the Parties hereby waive any objection which they may have now or hereafter to the laying of venue of any proceedings in said courts and to any claim that such proceedings have been brought in an inconvenient forum, and further irrevocably agree that a judgment or order in any such proceedings will be conclusive and binding upon each of them and may be enforced in the courts of any other jurisdiction. **<u>You and the Company waive the right to a trial by jury with respect to any such dispute or other proceeding</u>**.

**13.** **Savings Clause**. In the event that any one or more of the provisions of this Agreement (or any of its Exhibits or any of the Restrictive Covenants) is held to be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions will not in any way be affected or impaired thereby. Moreover, if any one or more of the provisions contained in this Agreement (or its Exhibits) is held to be excessively broad as to duration, scope of activity or subject, then those provisions will be construed by limiting and reducing them so as to be enforceable to the maximum extent compatible with applicable law.

**14.** **Interpretational Matter**. The word "including," as used in this Agreement, will be construed as meaning "including without limitation."

**15.** **Electronic Signatures**. Signatures to this Agreement may be delivered by facsimile, by electronic mail (e.g., a ".pdf" file) or by any other electronic means that is intended to preserve the original appearance of the document, and such delivery will have the same effect as the delivery of the paper document bearing the actual, hand-written signatures.

YOU FREELY, KNOWINGLY, AND AFTER DUE CONSIDERATION, ENTER INTO THIS AGREEMENT AFTER HAVING THE OPPORTUNITY TO CONSULT WITH AN ATTORNEY.

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****

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![img86569674_1.gif](img86569674_1.gif)

****

<br> **IN WITNESS WHEREOF**, the Parties, intending to be legally bound, have caused this Agreement to be executed, effective as of the Effective Date:

**<u>The Company</u>**:

**Lantheus Medical Imaging, Inc.**

By: /s/ BOB MARSHALL<br> Name: Bob Marshall<br>Title: Chief Financial Officer and Treasurer

**<u>You</u>**:

<u>/s/ BRIAN MARKISON</u> <br> Brian Markison

Page 6 of SECTIONPAGES6

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**<u>Exhibit A</u><br> Services**

Upon the request and at the direction of the Company's Executive Chair, you will (i) provide services reasonably requested from time to time and (ii) as requested, support the Company in an orderly executive transition by transferring knowledge, expertise, contacts and business relationships you gained or maintained as the Company's Chief Executive Officer, make yourself accessible to, and be reasonably available to provide advice, information, answers, introductions and other relationship building support to the Executive Chair and/or incoming Chief Executive Officer and members of the executive team (and otherwise as mutually agreed).

Travel may be required.

As a consultant, you will control the manner and timing of providing such Services.

Page A-1 of A-SECTIONPAGES1

&nbsp;&nbsp;&nbsp;&nbsp;DOCPROPERTY "CUS_DocIDChunk0" 69515338

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**<u>Exhibit B</u><br> Compensation**

You will be entitled to a consulting fee at a rate of $83,333.33 per month, paid monthly in arrears, for the duration of the Consulting Period (the "***Consulting Fee***") within thirty (30) days of receipt of an invoice submitted to apinvoices.US@lantheus.com.

The portion of the Consulting Fee allocable to your provision of Services during the Consulting Period and to your agreement to the Restrictive Covenants are as follows:

---

| | |
|:---|:---|
| &nbsp;&nbsp;**Component of Agreement** | &nbsp;&nbsp;**Portion of the Consulting Fee <br>Allocated as Consideration for <br>that Component of Agreement** |
| &nbsp;&nbsp;For providing the Services in accordance with the Agreement during the Consulting Period | &nbsp;&nbsp;50% |
| &nbsp;&nbsp;For agreeing to the Restrictive Covenants  | &nbsp;&nbsp;50% |

---

Notwithstanding anything to the contrary above, in the event that:

(i)you terminate the Agreement pursuant to Section 9(a)(i) of the Agreement (*Termination*) <u>other</u> <u>than</u> for the Company's material breach of the Agreement, then you will be entitled only to that portion of the unpaid Consulting Fees attributable to the period prior to the effective date of such termination,

(ii)the Company terminates the Agreement for your material breach pursuant to Section 9(a)(iii) of the Agreement (*Termination for Material Breach*), then you will be entitled only to that portion of the unpaid Consulting Fees attributable to the period prior to the effective date of such termination, and

(iii)the Company terminates the Agreement (x) during the Initial Consulting Period other than for material breach, the Company will pay you the Consulting Fees for the full Initial Consulting Period, or (y) during the Extended Consulting Period for any reason, you will be entitled only to that portion of the unpaid Consulting Fees attributable to the period prior to the effective date of such termination.

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## Exhibit 10.35

![img87493195_0.gif](img87493195_0.gif)**EXHIBIT 10.35** 

**Execution Version**

**RETIREMENT AND SEPARATION AGREEMENT**

This **Retirement and Separation Agreement** is made by and between Lantheus Medical Imaging, Inc. (together with its affiliates, the "***Company***") and Brian Markison ("***you***") (each of the Company and you, individually, a "***Party***" and, collectively, the "***Parties***"), effective as of November 6, 2025 (the "***Execution Date***") (this "***Agreement***").

Each of the Parties, intending to be legally bound, agree as follows:

**1.** **Terms of Retirement and Separation as a Company Employee**.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)<u>Retirement Date</u>. Your employment with the Company will end effective as of December 31, 2025 (the "***Retirement Date***"). By signing this Agreement, you will be deemed to have resigned, as of the Retirement Date, from all positions and titles you hold with the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)<u>Final Compensation</u>. Following the Retirement Date, you will receive on the next regularly scheduled payroll in the form of one or more payroll checks or electronic deposits, as applicable, (i) your base salary for the final payroll period of your employment through the Retirement Date and (ii) payment for any vacation time accrued but not used as of the Retirement Date. In addition, you will receive, within 60 days following the Retirement Date, a lump sum amount equal to your earned annual cash bonus in respect of 2025, if any, based on actual Company performance as determined in the ordinary course and consistent with past practice. You will receive on or as soon as reasonably practicable following the Retirement Date (x) any contributions that you have made under the Company's employee stock purchase plan that are refundable to you under its respective terms and conditions and (y) reimbursement for any business expenses incurred by you in accordance with the Company's policies, but not yet paid to you, through the Retirement Date; provided any such business expenses are submitted via the Concur system within two weeks of your Retirement Date. You are entitled to the amounts outlined in this Section 1(b) (*Final Compensation*) regardless of whether you sign this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)<u>Benefits</u>. Except for any right you may have to elect to continue your participation and that of your eligible dependents in the Company's group health plans under the Consolidated Omnibus Budget Reconciliation Act of 1985, your participation in all employee benefit plans and programs of the Company and its affiliates will end as of the last day of the month in which the Retirement Date occurs. Regardless of whether you sign this Agreement, you will receive information about your COBRA continuation rights under separate cover and must properly and timely elect COBRA as provided in the instructions if you want to elect such COBRA coverage.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)<u>Forfeiture of Unvested Equity Awards; Exercisability of Vested Options</u>. You and the Company acknowledge and agree that, as of the Retirement Date, your unvested equity awards under the Company's 2015, 2013 and 2008 Equity Incentive Plans and the award

------

![img87493195_1.gif](img87493195_1.gif)

agreements thereunder (collectively, the "***Plans***") are either forfeited or remain outstanding, as applicable, pursuant to their respective terms and the terms of the Plans in light of a "Qualified Retirement" occurring and "Service" for purposes of the Plans having ceased, on the Retirement Date.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)<u>Acknowledgement of Full Payment</u>. You acknowledge and agree that the payments and other benefits provided under this Section 1 (*Terms of Retirement and Separation as a Company Employee*) are in complete satisfaction of any and all compensation and benefits due to you as an employee (including any wages, bonuses, commissions, severance pay, other compensation of any kind and/or benefits of any kind) by the Company on and prior to the Retirement Date. You further acknowledge that, except as expressly provided under or explicitly contemplated by this Agreement, no further compensation or benefits are owed or will be provided to you by the Company.

**2.** **Restrictive Covenants**. You acknowledge and agree that all previously-executed confidentiality, nonuse, assignment of inventions, non-solicitation of employees, noncompetition, non-solicitation of customers and business partners, non-disparagement and other similar covenants or agreements among the Parties, including the Employee Non-Disclosure, Assignment of Inventions and Non-Solicitation Agreement entered into with the Company, dated as of January 19, 2024, and the Employee Restrictive Covenant Agreement entered into with the Company, dated as of January 19, 2024 (each as amended, modified or supplemented from time to time by mutual agreement of the Parties, collectively, the "***Restrictive Covenants***") remain in full force and effect in accordance with their terms, and you agree to abide by the Restrictive Covenants.

**3.** **Cooperation**. You agree to cooperate fully with the Company as set forth in Section 11(l) of your Employment Agreement.

**4.** **Consulting Agreement**. Subject to and in consideration of your meeting your obligations under this Agreement, the Company will provide you with a separate consulting agreement effective on November 6, 2025 pursuant to which you will provide services to the Company immediately following the Retirement Date (as amended, modified or supplemented from time to time by mutual agreement of the Parties, the "***Consulting Agreement***"). You acknowledge and agree that the Company would not provide the Consulting Agreement to you but for your agreement to the terms and conditions of this Agreement, including Section 2 (*Restrictive Covenants*).

**5.** **Taxes**. All taxes on compensation or benefits earned under this Agreement will be your responsibility; provided that the Company will withhold any taxes and remit those on your behalf to appropriate tax authorities if and to the extent the Company is required to do so by applicable law.

**6.** **Entire Agreement; Amendment.** This Agreement contains the entire understanding of the Parties with respect to the subject matter and supersedes all prior agreements or understandings except as explicitly set forth in this Agreement. For the avoidance of doubt: nothing in this Agreement supersedes (a) the Restrictive Covenants, (b) the Indemnification Agreement by and among the Company, Lantheus Holdings, Inc. and you, dated as of June 29, 2015, as amended, modified or supplemented from time to time by mutual agreement of the Parties, (c) the Consulting Agreement, (d) Section 11(l) of your Employment Agreement, or (e) the Plans. The Employment Agreement by and among the Company and you, dated as of

Page 2 of SECTIONPAGES4

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![img87493195_1.gif](img87493195_1.gif)

January 19, 2024, will be deemed to be terminated and of no further force and effect (other than provisions under it that are expressly indicated to survive therein and herein) as of the Retirement Date.

**7.** **Successors and Assigns**. This Agreement is binding upon the Parties and their successors, but is not otherwise assignable, except that the Company may assign this Agreement without the prior written consent of you to an affiliate or in connection with a merger, acquisition, recapitalization, reorganization, change of control or sale of all or substantially all of its assets or business to which this Agreement relates (however such a transaction is structured).

**8.** **Choice of Law**. This Agreement will be construed, governed, interpreted and applied in accordance with the laws of Massachusetts, without giving effect to the conflicts of laws provision thereof. Any disputes arising between the Parties relating to this Agreement will be subject to the exclusive jurisdiction and venue of the state and federal courts located in the Commonwealth of Massachusetts, and the Parties hereby waive any objection which they may have now or hereafter to the laying of venue of any proceedings in said courts and to any claim that such proceedings have been brought in an inconvenient forum, and further irrevocably agree that a judgment or order in any such proceedings will be conclusive and binding upon each of them and may be enforced in the courts of any other jurisdiction. **<u>You and the Company waive the right to a trial by jury with respect to any such dispute or other proceeding</u>**.

**9.** **Savings Clause**. In the event that any one or more of the provisions of this Agreement (or any of its Exhibits) is held to be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions will not in any way be affected or impaired thereby. Moreover, if any one or more of the provisions contained in this Agreement (or its exhibits) is held to be excessively broad as to duration, scope of activity or subject, those provisions will be construed by limiting and reducing them so as to be enforceable to the maximum extent compatible with applicable law.

**10.** **Interpretational Matter**. The word "including," as used in this Agreement, will be construed to mean "including without limitation."

**11.** **Electronic Signatures**. Signatures to this Agreement may be delivered by facsimile, by electronic mail (e.g., a ".pdf" file) or by any other electronic means that is intended to preserve the original appearance of the document, and such delivery will have the same effect as the delivery of the paper document bearing the actual, hand-written signatures.

*[The remainder of this page is left blank intentionally*.]

Page 3 of SECTIONPAGES4

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![img87493195_1.gif](img87493195_1.gif)

**YOU FREELY, KNOWINGLY, AND AFTER DUE CONSIDERATION, ENTER INTO THIS AGREEMENT AFTER HAVING THE OPPORTUNITY TO CONSULT WITH AN ATTORNEY.**

**IN WITNESS WHEREOF**, the Parties, intending to be legally bound, have caused this Agreement to be executed, effective as of the Execution Date:

**<u>The Company</u>**:

**Lantheus Medical Imaging, Inc.**

By: /s/BOB MARSHALL<br> Name: Bob Marshall<br>Title: Chief Financial Officer and Treasurer

**<u>You</u>**:

<u>/s/ BRIAN MARKISON</u> <br> Brian Markison

Page 4 of SECTIONPAGES4

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## Exhibit 10.36

![img88416716_0.gif](img88416716_0.gif)

**EXHIBIT 10.36**

**PERSONAL AND CONFIDENTIAL**

November 7, 2025

**<u>Via Email</u>**

<br>Mary Anne Heino

40 McCaskill Road West

Pinehurst, NC 28374

Dear Mary Anne:

At the direction of the Board of Directors (the "**Board**") of Lantheus Holdings, Inc. ("**Lantheus**" or the "**Company**"), I am pleased to extend this offer to you.

This offer reflects the terms and conditions recommended by the Talent and Compensation Committee ("**TCC**") and approved by the Board. It also includes important details about your onboarding, compensation, benefits, and the terms and conditions of your employment with Lantheus.

**Positions, Start Date and Location:** Your positions will be as follows: (1) Executive Chair commencing on November 7, 2025 (the "**Start Date**") and (2) additionally Interim Chief Executive Officer commencing on January 1, 2026. Both positions report to the Board. You will serve as a member of the Executive Team and will be based in Bedford, MA (in-person site-based).

**Salary:** Your base salary will be **$1,000,000.00** per year ($83,333.33 monthly), commencing on the Start Date and payable in accordance with the Company's standard payroll practices.

**Incentive Plan:** You will be eligible for a discretionary annual bonus for fiscal year 2026 with a target award of **110%** of your annual base salary, pro-rated based on the period of time you serve as Interim Chief Executive Officer of the Company, based on the Company's achievement of corporate performance targets established by the TCC. No bonus shall be payable for your services in 2025.

**Equity Grant:** As part of your offer, you will be granted equity awards (the "**Awards**") with an aggregate grant date fair value of $1,500,000 on November 17, 2025 (the "**Grant Date**"). The equity awards will consist of (x) 50% in Black-Scholes value of stock options with an exercise price equal to the closing price of the Company's common stock on the Grant Date, and (y) 50% restricted stock units (such amounts based on the closing price of the Company's common stock on the Grant Date), each of which shall vest in full on the first anniversary of the Grant Date (the "**Vesting Date**"), subject to your continued service with the Company through the Vesting Date. The Awards will contain other terms and conditions consistent with the form of award most recently approved by the TCC, and will also be subject to the 2015 Equity Incentive Plan. For clarity, you will not be eligible for additional grants as part of the 2026 annual compensation cycle.

**Expenses:** Reasonable business expenses incurred by you in the performance of your duties at the Company will be reimbursed by the Company in accordance with Company policies.

**Employee Benefits:** 

You will be entitled to participate in the Company's health, life and disability insurance, and retirement and fringe employee benefit plans as in effect from time to time (collectively

Page 1 of NUMPAGES 2

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![img88416716_0.gif](img88416716_0.gif)

"**Employee Benefits**"), on the same basis as those benefits are generally made available to other similarly situated executives of the Company.

Many of our plans begin as soon as your date of hire. While some are automatically provided, others require you to make an election. You will have the opportunity to customize a benefit package that meets your needs based on the benefits offered. During your onboarding, we will provide additional details regarding our benefits, how to enroll and when changes can be made. Attached to this offer is our current New Hire Benefits Guide for you to start to learn about our robust employee benefits package.

**Vacation:** You will be eligible for four weeks of vacation per calendar year. Vacation eligibility will be earned at a rate of 13.33 hours of your annual allotment for each full calendar month worked.

**Employment Eligibility (I-9) Documentation:** The Immigration Reform and Control Act of 1986 requires employers to verify the employment eligibility and identity of all new employees. In accordance with this Act, please complete Section 1 of the attached I-9 Form and bring it and the appropriate identifying documents with you on your first day of employment. Please be aware that if any information that you are required to submit is not provided within three (3) business days of beginning employment, this offer may be withdrawn, and if withdrawn, your candidacy for employment with us will be terminated.

**Invitation to Self-Identify:** The Company is subject to certain governmental recordkeeping and reporting requirements for the administration of civil rights and veteran's laws and regulations. In order to comply with these laws, we invite employees to voluntarily self-identify their race/ ethnicity, veterans and disability status. Submission of this information is voluntary and refusal to provide it will not subject you to any adverse treatment. The information obtained will be kept confidential and may only be used in accordance with the provisions of applicable laws, executive orders, and regulations, including those that require the information to be summarized and reported to the federal government for civil rights enforcement. It is the Company's policy that employees and qualified applicants are considered for employment actions without regard to race, religion, sex, national origin, age, marital status, sexual orientation, veteran status, disability, or other protected characteristics. The self-identification process will be relayed to you during new hire orientation.

**Employment at Will:** As a Company employee, your employment will be considered at will. This means either you or the Company may terminate employment at any time, with or without notice and with or without cause.

We look forward to working with you in your new role. If you have any questions, please do not hesitate to contact me.

Please indicate your acceptance of this offer by signing below and returning a copy of this letter to me.

Sincerely,

<br>_<u>/s/ Jamie Spaeth</u>____________________________<br>Jamie Spaeth

Chief People Officer

I accept this offer of employment with the terms and conditions as outlined in this letter.

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![img88416716_0.gif](img88416716_0.gif)

_<u>/s/ Mary Anne Heino</u>_____________________ _<u>11/19/25</u>_________________<br>Signature Today's Date

Page 3 of NUMPAGES 2

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## Exhibit 21.1

**Exhibit 21.1**

**LANTHEUS HOLDINGS, INC.**

**SUBSIDIARIES**

---

| | |
|:---|:---|
| **Subsidiary** | **State or Other Jurisdiction of Organization** |
| 27 Commerce Street LLC | New Jersey |
| ACP Lantern Real Estate, LLC | Delaware |
| Aphelion LLC | Delaware |
| Cerveau Technologies, Inc. | Delaware |
| Evergreen Discovery, LLC | Delaware |
| Evergreen Theragnostics, Inc. | Delaware |
| Excelsior Life Sciences Ireland Limited | Ireland |
| EXINI Diagnostics AB | Sweden |
| Lantheus Alpha Therapy, LLC | Delaware |
| Lantheus EU Limited | Ireland |
| Lantheus Five, LLC | Delaware |
| Lantheus Medical Imaging, Inc. | Delaware |
| Lantheus MI Canada, Inc. | Canada |
| Lantheus MI Intermediate, Inc. | Delaware |
| Lantheus MI Real Estate, LLC | Delaware |
| Lantheus MI UK Limited | United Kingdom |
| Lantheus Omega, LLC | Delaware |
| Lantheus One, LLC | Delaware |
| Lantheus Radiopharmaceuticals UK Limited | United Kingdom |
| Lantheus Switzerland GmbH | Switzerland |
| Lantheus Three, LLC | Delaware |
| Lantheus Two, LLC | Delaware |
| Life Molecular Imaging GmbH | Germany |
| Life Molecular Imaging LLC | Delaware |
| Life Molecular Imaging Limited | United Kingdom |
| Meilleur Technologies, Inc. | Delaware |
| MNTX Royalties Sub LLC | Delaware |
| Molecular Insight Pharmaceuticals, Inc. | Delaware |
| Progenics Pharmaceuticals Nevada, Inc. | Nevada |
| Progenics Pharmaceuticals, Inc. | Delaware |
| PSMA Development Company LLC | Delaware |
| SPECT HoldCo LLC | Delaware |

---

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## Exhibit 23.1

**EXHIBIT 23.1**

**CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We consent to the incorporation by reference in use in Registration Statement Nos. 333-271973, 333-264890, 333-258454, 333-239491, 333-232919, 333-220050 , 333-220049, 333-214343, 333-205211, and 333-281686 on Form S-8 of our reports dated February 26, 2026, relating to the financial statements of Lantheus Holdings, Inc. and the effectiveness of Lantheus Holdings, Inc.'s internal control over financial reporting appearing in this Annual Report on Form 10-K for the year ended December 31, 2025.

/s/ Deloitte & Touche LLP

Boston, Massachusetts

February 26, 2026

****

<br> ------

## Exhibit 31.1

**Exhibit 31.1**

**CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO**

**EXCHANGE ACT RULE 13a-14(a)**

I, Mary Anne Heino, certify that:

1. I have reviewed this Annual Report on Form 10-K of Lantheus Holdings, Inc.;

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;

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 registrant as of, and for, the periods presented in this report;

4. The registrant'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 registrant 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 registrant, 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 registrant'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 registrant's internal control over financial reporting that occurred during the registrant's fourth fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant'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 registrant'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 registrant's internal control over financial reporting.

------

---

| | | | |
|:---|:---|:---|:---|
| Date: | February 26, 2026 | /s/ MARY ANNE HEINO | /s/ MARY ANNE HEINO |
|  |  | Name: | Mary Anne Heino |
|  |  | Title: | *Chief Executive Officer* |
|  |  |  | *(Principal Executive Officer)* |

---

------

## Exhibit 31.2

**Exhibit 31.2**

**CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO**

**EXCHANGE ACT RULE 13a-14(a)**

I, Robert J. Marshall, certify that:

1. I have reviewed this Annual Report on Form 10-K of Lantheus Holdings, Inc.;

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;

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 registrant as of, and for, the periods presented in this report;

4. The registrant'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 registrant 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 registrant, 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 registrant'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 registrant's internal control over financial reporting that occurred during the registrant's fourth fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant'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 registrant'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 registrant's internal control over financial reporting.

------

---

| | | | |
|:---|:---|:---|:---|
| Date: | February 26, 2026 | /s/ ROBERT J. MARSHALL, JR. | /s/ ROBERT J. MARSHALL, JR. |
|  |  | Name: | Robert J. Marshall, Jr. |
|  |  | Title: | *Chief Financial Officer* |
|  |  |  | *(Principal Financial Officer)* |

---

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## Exhibit 32.1

**Exhibit 32.1**

**CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350**

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, Mary Anne Heino, the Chief Executive Officer, and Robert J. Marshall, Jr., the Chief Financial Officer, of Lantheus Holdings, Inc. (the "Company"), hereby certify, that, to their knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.The Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the "Report") of the Company fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934; 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.

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| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;Date: | &nbsp;&nbsp;February 26, 2026 |  | /s/ MARY ANNE HEINO |
|  |  | Name: | Mary Anne Heino |
|  |  | Title: | *Chief Executive Officer* |
|  |  |  | *(Principal Executive Officer)* |

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| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;Date: | &nbsp;&nbsp;February 26, 2026 |  | /s/ ROBERT J. MARSHALL, JR. |
|  |  | Name: | Robert J. Marshall, Jr. |
|  |  | Title: | *Chief Financial Officer and Treasurer* |
|  |  |  | *(Principal Financial Officer)* |

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A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

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