Perspective Therapeutics, Inc.

Basis of Presentation and Summary of Significant Accounting Policies

Perspective Therapeutics, Inc. is a radiopharmaceutical development company that is pioneering advanced treatment applications for cancers throughout the body. The accompanying consolidated financial statements are those of Perspective Therapeutics, Inc., and its wholly owned subsidiaries, referred to herein as “Perspective Therapeutics” or the “Company.” All significant intercompany accounts and transactions have been eliminated in consolidation. In the opinion of management, all adjustments necessary for the fair presentation of the condensed consolidated financial statements for the interim periods presented have been included. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and related notes as set forth in the Company’s Annual Report on Form 10-K for the period ended December 31, 2024 filed with the Securities and Exchange Commission (SEC) on March 26, 2025 and amended on March 28, 2025 (2024 Form 10-K).

The unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (U.S. GAAP). Certain information and note disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to those rules and regulations, although the Company believes that the disclosures are adequate for the information not to be misleading. The unaudited condensed consolidated financial statements reflect, in management’s opinion, all adjustments of a normal, recurring nature that are necessary for the fair statement of the Company’s financial position, results of operations and cash flows for the interim periods, but are not necessarily indicative of the results expected for the full fiscal year or any other period.

Discontinued Operations

On April 12, 2024, the Company completed the sale of its Cesium-131 brachytherapy business and substantially all of the assets of Isoray Medical, Inc. (Isoray), a wholly owned subsidiary of Perspective Therapeutics, to GT Medical Technologies, Inc., a Delaware corporation (GT Medical) (such transaction being the GT Medical Closing). Pursuant to the GT Medical Closing, GT Medical issued to Isoray 279,516 shares of GT Medical’s common stock, par value $0.0001 per share, representing 0.5% of GT Medical’s issued and outstanding capital stock on a fully diluted basis as of the closing. Accordingly, the financial information and operating results of the Cesium-131 brachytherapy business have been presented as discontinued operations in the condensed consolidated financial statements for all periods presented. Unless otherwise noted, discussion within these notes to the condensed consolidated financial statements relates to continuing operations. For additional information, see Note 4, Discontinued Operations, in this Form 10-Q and Note 5, Discontinued Operations, in the 2024 Form 10-K.

Reverse Stock Split

On June 14, 2024, the Company effected a 1-for-10 reverse stock split (Reverse Split) of the Company’s issued and outstanding shares of common stock, par value $0.001 per share (Common Stock), and the Common Stock began trading on a split-adjusted basis on June 17, 2024. The Reverse Split did not reduce the total number of authorized shares of Common Stock or the Company’s preferred stock, par value $0.001 per share (Preferred Stock), or change the par values of the Common Stock or Preferred Stock. The Reverse Split affected all stockholders uniformly and did not affect any stockholder’s ownership percentage of the shares of Common Stock (except to the extent that the Reverse Split resulted in some of the stockholders receiving cash in lieu of fractional shares). All outstanding options and warrants entitling their holders to purchase shares of Common Stock were adjusted as a result of the Reverse Split, in accordance with the terms of each such security. In addition, the number of shares reserved for future issuance pursuant to the Company’s equity incentive plans was also adjusted accordingly. As a result, all historical per share data, number of shares issued and outstanding, and outstanding options and warrants for the periods presented in the accompanying condensed consolidated financial statements and notes thereto have been adjusted retroactively in this Form 10-Q, where applicable, to reflect the Reverse Split.

Segment Information

A segment is defined as a component of an entity that has discrete financial information available for regular evaluation by the Chief Operating Decision Maker (CODM) and is used to make decisions on how to allocate resources and assess performance. The Company has one operating and reportable segment, which is its radiopharmaceutical development segment. The accounting policies of the radiopharmaceutical development segment are the same as those reported in Note 2, Summary of Significant Accounting Policies, in the 2024 Form 10-K. The measurement of segment profit or loss is reported as “net loss” in the Condensed Consolidated Statements of Operations and Comprehensive Loss. The Company monitors its cash, cash equivalents and short-term investments, as reported on the Condensed Consolidated Balance Sheets, to determine funding for its research and development. To allocate resources, the Company’s CODM, who is its Chief Executive Officer, regularly reviews scientific data from clinical and preclinical studies and forecasted expenses for continuing operations. The Company currently does not generate revenue from commercial products and incurs the majority of its operating expenses in the United States.

Liquidity

The Company assesses its liquidity in terms of its ability to generate cash to fund its operating, investing and financing activities. The Company has had a history of operating losses and an absence of significant recurring cash inflows from revenue. At March 31, 2025, the Company had cash, cash equivalents and short-term investments of$211.7 million and total accumulated deficit of$249.9 million. The Company has historically financed its operations primarily through selling equity.

The Company believes that its$211.7 million of cash, cash equivalents and short-term investments as of March 31, 2025 will enable it to fund its current planned operations into late 2026, though it may raise additional capital through a combination of equity offerings, debt financings, collaborations, strategic alliances and marketing, distribution or licensing arrangements and/or government funding and grants.

The accompanying unaudited condensed consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the ordinary course of business. The operating plan may change as a result of many factors currently unknown to management, and there can be no assurance that the current operating plan will be achieved in the timeframe anticipated by management or at all, and the Company may need to seek additional funds sooner than anticipated. The unaudited condensed consolidated financial statements do not include any adjustments relating to the recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might result from potential unknown factors.

Reclassifications

In addition to the changes to the Company’s financial statement presentation related to the matters discussed under “Discontinued Operations” above, the Company has made certain reclassifications to prior period amounts in the condensed consolidated financial statements and accompanying notes to conform to the current period presentation. The reclassification of these items had no impact on net loss, financial position or cash flows in the current or prior periods. Specifically, the following items were updated in the Condensed Consolidated Statements of Cash Flows:

•

Depreciation expense and amortization of other assets were combined to create depreciation and amortization expense; and

•

Foreign currency adjustments, lease expense and equity in loss of affiliate (see the Condensed Consolidated Statements of Operations and Comprehensive Loss) were combined to create other noncash income, net.

Significant Accounting Policies

The Company’s significant accounting policies and recent accounting pronouncements are described in Note 2, Summary of Significant Accounting Policies, to the consolidated financial statements in Item 8 of the 2024 Form 10-K. There have been no changes to the Company’s significant accounting policies, and the Company has not adopted any significant accounting policies during the three months ended March 31, 2025.

Loss per Share

Basic and diluted loss per share is calculated by dividing net loss by the weighted average number of shares of Common Stock outstanding and does not include the impact of any potentially dilutive common stock equivalents. In January 2024 and May 2024, the Company issued pre-funded warrants in connection with the Public Offering (as defined below) and the Registered Offering (as defined below), respectively (see Note 3, Investments and Agreements, in this Form 10-Q). As the pre-funded warrants’ exercise price is nominal and there are no conditions that must be satisfied prior to their exercise, the pre-funded warrants are included in the calculation of the basic and diluted earnings per share as of March 31, 2025 and 2024. At each of March 31, 2025 and 2024, the calculation of diluted weighted average shares did not include common stock warrants or options that were potentially convertible into Common Stock as those would be antidilutive due to the Company’s net loss position.

Securities not considered in the calculation of diluted loss per share, but that could be dilutive in the future, are as follows:

Investments and Agreements

On August 13, 2024, the Company entered into a Controlled Equity Offering SM Sales Agreement (2024 ATM Agreement) with Cantor Fitzgerald & Co. and RBC Capital Markets, LLC (each, an ATM Agent, and together, the ATM Agents) pursuant to which the Company from time to time may offer and sell shares (2024 ATM Shares) of its Common Stock, through or to the ATM Agents having an aggregate sales price of up to $250.0 million.

Subject to the terms and conditions of the 2024 ATM Agreement, each ATM Agent is required to use its commercially reasonable efforts to sell the ATM Shares from time to time, based upon the Company’s instructions. The Company has provided the ATM Agents with customary indemnification rights, and the ATM Agents will be entitled to a commission of up to 3.0% of the gross proceeds from each sale of the ATM Shares effectuated through or to the applicable ATM Agent selling the ATM Shares.

Sales of the 2024 ATM Shares under the 2024 ATM Agreement may be made in transactions that are deemed to be “at the market offerings” as defined in Rule 415 under the Securities Act of 1933, as amended. The Company has no obligation to sell any of the 2024 ATM Shares and may at any time suspend offers under the 2024 ATM Agreement or terminate the 2024 ATM Agreement.

Any Common Stock sold under the 2024 ATM Agreement will be issued and sold pursuant to the Company’s shelf registration statement on Form S-3 (File No. 333-279692) (the May 2024 Registration Statement), which initially became effective on May 24, 2024 and which was subsequently amended on March 26, 2025 and April 4, 2025, with Post-Effective Amendment #3 being declared effective by the SEC on April 8, 2025. On August 13, 2024, the Company initially filed a prospectus supplement to the May 2024 Registration Statement with the SEC in connection with the offer and sale of up to $250.0 million of the 2024 ATM Shares pursuant to the 2024 ATM Agreement. The Company re-filed the ATM prospectus supplement with each of the post-effective amendments to the May 2024 Registration Statement.

On February 18, 2025, the Company sold 3,379,377 shares of its Common Stock under the 2024 ATM Agreement at an average price of approximately $3.02 per share of Common Stock, resulting in gross proceeds of approximately $10.2 million.

May 2024 Registered Offering

On May 24, 2024, the Company entered into an underwriting agreement with BofA Securities, Inc., as representative of the underwriters named therein, in connection with its previously announced underwritten offering (Registered Offering) of 5,151,588 shares (Registered Offering Shares) of Common Stock and, in lieu of Registered Offering Shares to certain investors, pre-funded warrants (May 2024 Pre-funded Warrants) to purchase 146,425 shares of Common Stock. The price to the investors for the Registered Offering Shares was $15.10 per Registered Offering Share, and the price to the investors for the May 2024 Pre-funded Warrants was $15.09 per May 2024 Pre-funded Warrant, which represents the per share price for the Registered Offering Shares less the $0.01 per share exercise price for each such May 2024 Pre-funded Warrant. The Registered Offering closed on May 29, 2024. BofA Securities, Inc., Oppenheimer & Co. Inc. and RBC Capital Markets, LLC acted as joint book-running managers for the Registered Offering and B. Riley Securities, Inc. acted as a co-manager for the Registered Offering. JonesTrading Institutional Services LLC acted as a financial advisor for the Registered Offering.

The gross proceeds to the Company from the Registered Offering were approximately $80.0 million, before underwriting discounts and commissions and estimated expenses of the Registered Offering.

The May 2024 Pre-funded Warrants became exercisable subsequent to the filing and effectiveness of an amendment to the Company’s Amended and Restated Certificate of Incorporation with the Secretary of State of the State of Delaware on June 14, 2024. The exercise price and the number of shares of Common Stock issuable upon exercise of each May 2024 Pre-funded Warrant are subject to appropriate adjustment in the event of certain stock dividends and distributions, stock splits, stock combinations, reclassifications or similar events affecting the Common Stock as well as upon any distribution of assets, including cash, stock or other property, to the Company’s stockholders. The May 2024 Pre-funded Warrants will not expire and are exercisable in cash or by means of a cashless exercise. A holder of May 2024 Pre-funded Warrants may not exercise such May 2024 Pre-funded Warrants if the aggregate number of shares of Common Stock beneficially owned by such holder, together with its affiliates, would be more than 4.99% or 9.99%, as elected by such holder, of the issued and outstanding shares of Common Stock following such exercise, as such percentage ownership is determined in accordance with the terms of the May 2024 Pre-funded Warrants. A holder of May 2024 Pre-funded Warrants may increase or decrease this percentage not in excess of 19.99% by providing at least 61 days’ prior notice to the Company. The holders of the May 2024 Pre-Funded Warrants exercised all of such warrants during the second quarter of 2025 by means of the cashless exercise provision and within the other constraints noted above.

March 2024 Private Placement with Institutional Investors

On March 4, 2024, the Company entered into an investment agreement (March 2024 Investment Agreement) with certain accredited institutional investors (Institutional Investors) pursuant to which the Company agreed to issue and sell, in a private placement (the March 2024 Private Placement),9,200,998 shares of Common Stock, for a purchase price of $9.50 per share, representing the closing price of the Common Stock on March 1, 2024. The closing of the March 2024 Private Placement occurred on March 6, 2024.

The gross proceeds to the Company from the March 2024 Private Placement were approximately $87.4 million, before deducting fees payable to the Placement Agents (as defined below) and other estimated transaction expenses.

The March 2024 Private Placement was conducted pursuant to a Placement Agency Agreement, dated March 4, 2024 (the Placement Agency Agreement), by and between the Company and Oppenheimer & Co. Inc., as representative of the placement agents named therein (the Placement Agents). Per the Placement Agency Agreement, the Company agreed to: (i) pay the Placement Agents a cash fee equal to 5.85% of the gross proceeds received by the Company from the sale of the shares; and (ii) reimburse the Placement Agents for certain fees and expenses.

Lantheus Agreements

Investment Agreement

On January 8, 2024, the Company entered into an investment agreement (Lantheus Investment Agreement) with Lantheus Alpha Therapy, LLC, a Delaware limited liability company and wholly owned subsidiary of Lantheus Holdings, Inc. (Lantheus), pursuant to which the Company agreed to sell and issue to Lantheus in a private placement transaction certain shares (Lantheus Shares) of Common Stock. The closing of the purchase and sale of the Lantheus Shares to Lantheus by the Company (the Lantheus Closing) was subject to the Company raising at least $50.0 million of gross proceeds (excluding Lantheus’ investment) in a qualifying third-party financing transaction, which occurred on January 22, 2024.

The number of Lantheus Shares sold was 5,634,235, representing 19.99% of the outstanding shares of Common Stock as of January 8, 2024. Pursuant to the Lantheus Investment Agreement, the Company agreed to cooperate in good faith to negotiate and enter into a registration rights agreement with Lantheus, obligating the Company to file a registration statement on Form S-3 with the SEC to register for resale the Lantheus Shares issued at the Lantheus Closing. The Company filed such Form S-3 on March 29, 2024, and the SEC declared it effective on April 9, 2024 (File No. 333-278362).

The Lantheus Investment Agreement also contains agreements of the Company and Lantheus whereby Lantheus is provided certain board observer and information rights of the Company, subject to certain exceptions.

The Lantheus Investment Agreement also provides Lantheus with certain pro rata participation rights to maintain its ownership position in the Company in the event that the Company makes any public or non-public offering of any equity or voting interests in the Company or any securities that are convertible or exchangeable into (or exercisable for) equity or voting interests in the Company, subject to certain exceptions.

Pursuant to the Lantheus Investment Agreement, the Company is required to notify Lantheus within 10 business days of the end of a fiscal quarter in which the Company issued shares of Common Stock pursuant to at-the-market programs, including the 2024 ATM Agreement, of (i) the number of shares of Common Stock issued during such fiscal quarter pursuant to the 2024 ATM Agreement and (ii) the average price per share received by the Company before commissions (ATM Average Price). Upon receipt of such notice, Lantheus may elect, at its option, to purchase all or a portion of its Pro Rata Portion (as defined in the Lantheus Investment Agreement) of such shares at an aggregate price equal to the number of shares purchased multiplied by the ATM Average Price for such quarter (ATM Participation Right). Pursuant to the Lantheus Investment Agreement, Lantheus may not exercise the ATM Participation Right more than two times per calendar year.

Asset Purchase Agreement

On January 8, 2024, the Company entered into an Asset Purchase Agreement (Progenics APA) with Progenics Pharmaceuticals, Inc., a Delaware corporation (Progenics) and affiliate of Lantheus, pursuant to which the Company acquired certain assets and the associated lease of Progenics’ radiopharmaceutical manufacturing facility in Somerset, New Jersey for a purchase price of $8.0 million in cash. The transactions contemplated by the Progenics APA closed on March 1, 2024.

Option Agreement

On January 8, 2024, the Company entered into an option agreement (Option Agreement) with Lantheus whereby Lantheus was granted an exclusive option to negotiate an exclusive, worldwide, royalty- and milestone-bearing right and license to [212 Pb]VMT-α-NET, the Company’s clinical-stage alpha therapy developed for the treatment of neuroendocrine tumors. If good-faith negotiations fail, Lantheus has a one-year right to reenter negotiations if a third party offers to purchase or license the [212 Pb]VMT-α-NET program. Additionally, Lantheus has 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 filing, a right to negotiate for an exclusive license to such candidates. In consideration of the rights granted by the Company to Lantheus pursuant to the Option Agreement, Lantheus paid to the Company a one-time payment of $28.0 million, subject to certain withholding provisions associated with the closing of the Progenics APA.

Under the terms of the Option Agreement, Lantheus also had a right of first offer and last look protections for any third-party merger and acquisition transactions involving the Company for a 12-month period which expired on January 8, 2025.

The Company determined that the Option Agreement should be accounted for as a research and development arrangement in accordance with Accounting Standards Codification (ASC) 730-20, Research and Development Arrangements, as Lantheus held approximately 19.9% of the Company’s outstanding Common Stock at March 31, 2024. The Option Agreement containsno repayment provisions, does not create any obligation to enter into any license, transfer or sale agreements with Lantheus, and does not restrict the use of the funds in any way.

Accordingly, the Condensed Consolidated Balance Sheets report current and long-term liabilities related to these options under the caption, “Deferred Income.” The values for each distinct option within the Option Agreement were determined by estimating the fair value of each distinct option by a third-party valuation firm and the liabilities will be recognized as income in the Condensed Consolidated Statements of Operations and Comprehensive Loss as the various options expire. In connection with the January 8, 2025 expiration of the right of first offer and last look provisions provided under the Option Agreement, the Company recognized $1.4 million on the Condensed Consolidated Statements of Operations and Comprehensive Loss as “Other income from a related party.”

January 2024 Public Offering

On January 17, 2024, the Company entered into an underwriting agreement (Underwriting Agreement) with Oppenheimer & Co. Inc., as representative of the underwriters named therein (Underwriters), in connection with its previously announced underwritten public offering (Public Offering) of 13,207,521 shares (Public Shares) of Common Stock and, in lieu of Public Shares to certain investors, pre-funded warrants (Jan. 2024 Pre-funded Warrants) to purchase 3,008,694 shares of Common Stock. The price to the public for the Public Shares was $3.70 per Public Share, and the price to the public for the Jan. 2024 Pre-funded Warrants was $3.69 per Jan. 2024 Pre-funded Warrant, which represents the per share price for the Public Shares less the $0.01 per share exercise price for each such Jan. 2024 Pre-funded Warrant. Under the terms of the Underwriting Agreement, the Company granted the Underwriters an option, exercisable for 30 days, to purchase up to an additional 2,432,432 shares of Common Stock at the same price per share as the Public Shares, which was fully exercised by the Underwriters on January 18, 2024. The Public Offering closed on January 22, 2024.

The gross proceeds to the Company from the Public Offering were approximately $69.0 million, before underwriting discounts and commissions and estimated expenses of the Public Offering.

The Public Offering was made pursuant to the Company’s shelf registration statement on Form S-3 (File No. 333-275638), declared effective by the SEC on December 14, 2023, a base prospectus dated December 14, 2023, and the related prospectus supplement dated January 17, 2024.

The Jan. 2024 Pre-funded Warrants were exercisable at any time after the date of issuance. The exercise price and the number of shares of Common Stock issuable upon exercise of each Jan. 2024 Pre-funded Warrant were subject to appropriate adjustment in the event of certain stock dividends and distributions, stock splits, stock combinations, reclassifications or similar events affecting the Common Stock as well as upon any distribution of assets, including cash, stock or other property, to the Company’s stockholders. The Jan. 2024 Pre-funded Warrants did not have an expiration date and were exercisable in cash or by means of a cashless exercise. A holder of Jan. 2024 Pre-funded Warrants could not exercise such Jan. 2024 Pre-funded Warrants if the aggregate number of shares of Common Stock beneficially owned by such holder, together with its affiliates, would beneficially own more than 4.99% of the issued and outstanding shares of Common Stock following such exercise, as such percentage ownership is determined in accordance with the terms of the Jan. 2024 Pre-funded Warrants. A holder of Jan. 2024 Pre-funded Warrants could increase or decrease this percentage not in excess of 19.99% by providing at least 61 days’ prior notice to the Company. The holder of the Jan. 2024 Pre-Funded Warrants exercised all of such warrants during the fourth quarter of 2024 by means of the cashless exercise provision and within the other constraints noted above.

2023 ATM Agreement

The Company entered into an ATM Issuance Sales Agreement, dated November 17, 2023, by and among the Company, Oppenheimer & Co., Inc., B. Riley Securities, Inc. and JonesTrading Institutional Services LLC, to create an ATM equity program under which it may offer and sell shares of its Common Stock, from time to time (2023 ATM Agreement).

On November 17, 2023, the Company filed a shelf registration statement on Form S-3 with the SEC (File No. 333-275638) and accompanying base prospectus, declared effective by the SEC on December 14, 2023, for the offer and sale of up to $200.0 million of its securities (December 2023 Registration Statement). Also on November 17, 2023, the Company filed a prospectus supplement with the SEC in connection with the offering of up to $50.0 million of shares of its Common Stock pursuant to the 2023 ATM Agreement under the December 2023 Registration Statement.

On April 11, 2024, the Company sold 3,535,246 shares of its Common Stock under the 2023 ATM Agreement at an average price of approximately $14.00 per common share, resulting in gross proceeds of approximately $49.5 million.

On May 25, 2024, the Company terminated the offering of securities pursuant to the December 2023 Registration Statement in connection with the filing and effectiveness of the May 2024 Registration Statement.

On August 7, 2024, the Company delivered written notice to Oppenheimer & Co., Inc., B. Riley Securities, Inc. and JonesTrading Institutional Services LLC that it was terminating the 2023 ATM Agreement, which termination became effective August 12, 2024.

For additional information related to certain of the agreements discussed above, see Note 3 in the 2024 Form 10-K.

Discontinued Operations

The GT Medical Closing occurred on April 12, 2024 (GT Medical Closing Date). Previously, the Company announced that on December 7, 2023, Isoray entered into an Asset Purchase Agreement (GT Medical APA) by and among Isoray, the Company, and GT Medical pursuant to which Isoray would sell to GT Medical, and GT Medical would purchase from Isoray, all of Isoray’s right, title and interest in and to substantially all of the assets of Isoray related to Isoray’s commercial Cesium-131 business (the Business) including equipment, certain contracts, inventory and intellectual property. Subject to limited exceptions set forth in the GT Medical APA, GT Medical did not assume the liabilities of Isoray.

Pursuant to the terms of, and subject to the conditions specified in, the GT Medical APA, at the GT Medical Closing, (i) GT Medical issued to Isoray 279,516 shares of GT Medical’s common stock, par value $0.0001 per share, representing 0.5% of GT Medical’s issued and outstanding capital stock on a fully diluted basis as of the GT Medical Closing Date and (ii) Isoray has the right to receive, and GT Medical is obligated to pay, certain cash royalty payments during each of the first four years beginning upon the GT Medical Closing Date (each such year, a Measurement Period), as summarized below:

•

with respect to GT Medical’s net sales of Cesium-131 brachytherapy seeds for cases that do not utilize GT Medical’s GammaTile Therapy: (a) if such net sales for a Measurement Period are $10.0 million or less,3.0% of such net sales; (b) if such net sales for a Measurement Period are greater than $10.0 million and less than $15.0 million,4.0% of such net sales; and (c) if such net sales for a Measurement Period are $15.0 million or more,5.0% of such net sales; and

•

with respect to GT Medical’s net sales of GT Medical’s GammaTile Therapy utilizing Cesium-131 brachytherapy seeds:0.5% of such net sales for a Measurement Period.

In accordance with ASC 205-20, Presentation of Financial Statements – Discontinued Operations, the following table presents the components of discontinued operations in relation to the Business reported in the unaudited Condensed Consolidated Statements of Operations and Comprehensive Loss (in thousands):

The Company recognized a loss on classification as held for sale in December 2023 by identifying the assets and liabilities that were included in the GT Medical APA. Additionally, the loss recognized on classification as held for sale was determined using the estimated fair value of the GT Medical stock of $0.2 million received less the carrying value of the net assets sold. The fair value of the stock received was determined based on information provided to the Company by GT Medical from a current valuation study that was prepared for them. Excluded from the calculation of the loss are contingent royalties that could be received from future sales. As of March 31, 2025, the GT Medical stock was valued at $0.2 million based on an updated valuation report prepared for GT Medical.

There areno expenses reported in the unaudited Condensed Consolidated Statements of Cash Flows related to the discontinued operations for thethree months ended March 31, 2025. There is a de minimis amount of stock-based compensation expense included in the unaudited Condensed Consolidated Statements of Cash Flows related to the discontinued operations for the three months ended March 31, 2024.

For the three months ended March 31, 2025 and 2024, there wasno provision (benefit) for income taxes recorded related to the discontinued operations. Additionally, the Company is in a loss position and has recorded a full valuation allowance for the deferred tax assets associated with the discontinued operations.

Property and Equipment

In 2024, the Company purchased buildings located in the metropolitan areas of Houston, TX, Chicago, IL, and Los Angeles, CA, which it intends to use to manufacture its program candidates upon completion of modifications and installation of equipment. Also in 2024, the Company entered into a Master Equipment and Services Agreement (MESA) and statements of work (SOWs) thereunder with Comecer SpA (Comecer), pursuant to which the Company agreed to purchase from Comecer manufacturing equipment for the production of the Company’s radiopharmaceutical product candidates including, but not limited to, isotope processing hot cells and production suites and related equipment (collectively, the Deliverables) and services for installation and validation of the Deliverables at several of the Company’s production facilities in the United States. The aggregate consideration for such equipment and services pursuant to the MESA and SOWs is approximately €49.0 million payable in cash, excluding certain incidental costs, such as taxes, customs and duties, local transport, insurance and rigging. We may also elect to purchase certain additional equipment and services pursuant to the SOWs. The MESA provides for the payment of certain amounts in installments over the course of the production, installation and validation of the Deliverables. For additional information related to these 2024 events, see Note 7, Property and Equipment, of the 2024 Form 10-K.

The Company’s property and equipment consisted of the following (in thousands):

Property and equipment not placed in service are items that meet the capitalization threshold, or which management believes will meet the threshold at the time of completion and which have yet to be placed into service as of the date of the balance sheets and, therefore, no depreciation expense has been recognized.

Other Intangible Assets

The following table summarizes the components of the Company’s other intangible assets (in thousands):

The Company’s IPR&D assets represent the estimated fair value of its pipeline of acquired radiotherapy product candidates. The Company tests its indefinite-lived intangible assets for impairment during the fourth quarter of each year, or more frequently should circumstances change or events occur that would more likely than not reduce the fair value of its assets. No testing was deemed necessary during the three months ended March 31, 2025. For additional information related to the Company’s IPR&D assets, see Notes 2, 4 and 10 in the Company’s 2024 Form 10-K.

Available-for-Sale Securities

The Company invests in available-for-sale securities that consist of U.S. Treasury Securities, U.S. Agency bonds, commercial paper, certificates of deposit, corporate debt securities and asset-backed securities.

The Company’s cash equivalents consisted of the following (in thousands):

The Company’s available-for-sale securities that are measured at fair value on a recurring basis consisted of the following (in thousands):

The Company’s available-for-sale securities are classified as current assets, even though the stated maturity date may be one year or more beyond the current balance sheet date, which reflects management’s intention to use the proceeds from sales of these securities to fund operations as needed. At March 31, 2025, there were 56 available-for-sale securities with a fair value of $77.5 million that were in a gross unrealized loss position for less than 12 months, andnone were in a gross unrealized loss position for 12 months or more. The Company determined it is not “more likely than not” that it will be required to sell these securities prior to recovery of their amortized cost basis. As such, the Company didnot record a credit allowance as of either March 31, 2025 or December 31, 2024. Accrued interest receivable on the Company’s available-for-sale securities was $0.9 million and $0.2 million as of March 31, 2025 and December 31, 2024, respectively. For the three months ended March 31, 2025 and 2024, the Company didnot write off any accrued interest receivables, and there wereno realized gains or losses.

Fair Value Measurements

Fair value is defined as an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the accounting guidance establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:

Level 1 - Observable inputs such as quoted prices in active markets;

Level 2 - Inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets with insufficient volume or infrequent transactions (less active markets), or model-driven valuations in which all significant inputs are observable or can be derived principally from, or corroborated with, observable market data; and

Level 3 - Unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

Below is the summary of our cash equivalents and short-term investments measured at fair value on a recurring basis and categorized using the fair value hierarchy (in thousands):

There wereno Level 3 financial instruments measured at fair value on a recurring basis at March 31, 2025 and December 31, 2024.

For information related to short-term investments, see Note 7, Available-for-Sale Securities.

Share-Based Compensation

On May 31, 2024, the Company held its 2024 Annual Meeting of Stockholders (2024 Annual Meeting). At the 2024 Annual Meeting, the Company’s stockholders approved the Company’s Third Amended and Restated 2020 Equity Incentive Plan (the Amended and Restated Plan) which, among other things, (a) increased the aggregate number of shares of Common Stock authorized for issuance under the Amended and Restated Plan by 4,870,092 for a total of 12,500,000 shares of Common Stock, and (b) adjusted the “evergreen” provision included therein, such that the number of shares of Common Stock available for the grant of awards under the Amended and Restated Plan automatically increases on January 1 of each year in an amount equal to 5% of the number of shares of Common Stock issued and outstanding on December 31 of the immediately preceding year (subject to adjustment in the event of stock splits and other similar events); provided, however, that the Company’s Board of Directors may act prior to January 1 of a given year to provide that there will be no increase in the share limit for such year or provide that the increase for such year will be a lesser number of shares of Common Stock. On August 14, 2024, the Company filed a Form S-8 to register 4,870,092 additional shares of Common Stock authorized for issuance under the Amended and Restated Plan as approved by stockholders at the 2024 Annual Meeting. On March 26, 2025, the Company filed a Form S-8 to register 3,533,573 additional shares of Common Stock pursuant to the “evergreen” provision under the Amended and Restated Plan for 2025.

The following table presents the share-based compensation expense recognized for all share-based compensation arrangements, excluding share-based compensation expense reported in Note 4, Discontinued Operations (in thousands):

Commitments and Contingencies

The Company has been in settlement negotiations with a representative forsix stockholder plaintiff firms alleging the Company violated Delaware law in its preliminary proxy statement that was disseminated to stockholders in November 2022 for the Company’s annual meeting held in December 2022. Based on these settlement negotiations to date, the Company estimates that it will settle for no more than an aggregate of $0.2 million and, therefore, has an accrual for the estimated liability of $0.2 million as of March 31, 2025 and December 31, 2024. This balance is included in accrued expenses on the unaudited Condensed Consolidated Balance Sheets.

In May 2025, the Company entered into a purchase order with the U.S. Department of Energy (DOE) under which the Company will purchase thorium-228 from the DOE during 2025 and 2026. The purchase order includes a “take-or-pay” provision pursuant to which the Company is committed to purchasing approximately $8.4 million of thorium-228 during the term of the agreement.

Related Parties

In connection with the Lantheus Investment Agreement entered into with Lantheus on January 8, 2024, the Company agreed to sell and issue the Lantheus Shares. The number of Lantheus Shares sold was 5,634,235, representing 19.99% of the outstanding shares of Common Stock as of January 8, 2024.

On January 8, 2024, the Company entered into the Progenics APA with Progenics, an affiliate of Lantheus, for a purchase price of $8.0 million. On March 1, 2024, the Company closed on the transactions contemplated by the Progenics APA.

Also on January 8, 2024, the Company entered into the Option Agreement with Lantheus whereby Lantheus was granted an exclusive option to negotiate an exclusive, worldwide, royalty- and milestone-bearing right and license to [212 Pb]VMT-α-NET, the Company’s clinical-stage alpha therapy developed for the treatment of neuroendocrine tumors. If good-faith negotiations fail, Lantheus has a one-year right to reenter negotiations if a third party offers to purchase or license the [212 Pb]VMT-α-NET program. Additionally, Lantheus has a right to co-fund the IND application, enabling studies for early-stage therapeutic candidates targeting prostate-specific membrane antigen and gastrin-releasing peptide receptor and, prior to IND filing, a right to negotiate for an exclusive license to such candidates. In consideration of the rights granted by the Company to Lantheus pursuant to the Option Agreement, Lantheus paid to the Company a one-time payment of $28.0 million, subject to certain withholding provisions associated with the closing of the Progenics APA.

Under the terms of the Option Agreement, Lantheus also had a right of first offer and last look protections for any third-party merger and acquisition transactions involving the Company for a 12-month period, which expired on January 8, 2025. In connection with the January 8, 2025 expiration of the right of first offer and last look provisions provided under the Option Agreement, the Company recognized $1.4 million on the Condensed Consolidated Statements of Operations and Comprehensive Loss as “Other income from a related party.”

On March 4, 2024, the Company entered into the March 2024 Investment Agreement in which the Company agreed to issue and sell 9,200,998 shares of Common Stock. Lantheus, a significant stockholder of the Company, purchased part of the shares issued to increase their ownership percentage to approximately 19.9% in the Company following the closing of the March 2024 Investment Agreement on March 6, 2024.

For additional information regarding the Lantheus Investment Agreement, the Progenics APA and the March 2024 Investment Agreement, see Note 3, Investments and Agreements.

On August 8, 2024, the Company entered into an access and license agreement with Lantheus. For additional information, see Note 12, Leases.

Leases

The Company accounts for its leases under ASC 842, Leases. Effective April 1, 2024, the Company entered into a lease with the Board of Regents, State of Iowa, for lab and office space at the BioVentures Center. The lease terminates in March 2026. Upon entering into this lease, the Company recognized a right-of-use asset and lease liability of approximately $1.1 million on the Condensed Consolidated Balance Sheet based upon the present value of the future base payments discounted at an 8% discount rate using the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment as the lease does not provide an implicit discount rate.

The Company acquired a lease from Progenics, an affiliate of Lantheus, for a production facility in Somerset, NJ effective on March 1, 2024 (see Note 3, Investments and Agreements, in this Form 10-Q). The lease terminates on November 29, 2028. Upon entering into this lease, the Company recognized a right-of-use asset and lease liability of approximately $0.3 million on the Condensed Consolidated Balance Sheet based upon the present value of the future base payments discounted at an 8% discount rate using the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment as the lease does not provide an implicit discount rate.

On August 8, 2024, the Company assumed a lease from Progenics for office space in Somerset, NJ (Office). The lease terminates on November 30, 2028. Upon entering into this lease, the Company recognized a right-of-use asset and lease liability of approximately $0.6 million on the Condensed Consolidated Balance Sheet based upon the present value of the future base payments discounted at an 8% discount rate using the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment as the lease does not provide an implicit discount rate.

Upon assuming the lease, the Company entered into a license and access agreement with Lantheus, which provides access to both dedicated and shared space of the Office (Access Agreement). There isno renewal option, and the termination options are available only for material breaches. In consideration of the Access Agreement, Lantheus agreed to pay base rent and associated costs through December 2024 directly to the landlord. The base rent through December 2024 was less than $0.1 million (Prepaid Rent). Pursuant to ASC 842, Leases, the Access Agreement is a sublease in which the Company is a sublessor and Lantheus is a sublessee. The Company will amortize the Prepaid Rent over the entire lease term of 52 months.

On July 1, 2023, the Company entered into a lease with Unico Properties LLC for office space in Seattle, WA, that terminates in October 2028. Upon entering into this lease, the Company recognized a right-of-use asset and lease liability of approximately $0.8 million on the Condensed Consolidated Balance Sheet based upon the present value of the future base payments discounted at an 8% discount rate using the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment as the lease does not provide an implicit discount rate.

The weighted average remaining term and discount rate for the Company’s operating leases as of March 31, 2025 was 2.9 years and 8%, respectively.

The Company’s operating lease expense was $0.3 million and de minimis for thethree months ended March 31, 2025 and 2024, respectively.

The following table presents the future operating lease payments and lease liability included on the Condensed Consolidated Balance Sheet related to the Company’s operating leases as of March 31, 2025 (in thousands):

Asset Retirement Obligation

The Company had an asset retirement obligation (ARO) associated with the facility it leased in Richland, WA. This lease is included in the GT Medical APA and was assigned to GT Medical upon the GT Medical Closing, which occurred on April 12, 2024. As such, this liability is no longer reported as an ARO in the Company’s condensed consolidated financial statements as of March 31, 2025 and December 31, 2024. However, the Company maintains the estimated liability in its condensed consolidated financial statements related to hazardous waste removal that relates to activities prior to the GT Medical Closing. The estimated liability at each of March 31, 2025 and December 31, 2024 was$0.5 million and is included within “accounts payable and accrued expenses” in the Condensed Consolidated Balance Sheets.

Note Payable

On December 29, 2022, the Company obtained a promissory note in the amount of $1.7 million for the purpose of purchasing land and a building in Coralville, IA. The note bears interest at 6.15% per annum and is collateralized by the property. The note requires monthly principal and interest payments, and a balloon payment of approximately $1.5 million is due on December 29, 2027.

The following table presents the current and long-term portions of the note payable (in thousands):

The following table presents the future principal payments included on the Condensed Consolidated Balance Sheets related to the Company’s note payable as of March 31, 2025 (in thousands):