Note 1 - Organization and Description of Business Operations

Checkpoint Therapeutics, Inc. (the “Company” or “Checkpoint”) was incorporated in Delaware on November 10, 2014. Checkpoint is a commercial-stage immunotherapy and targeted oncology company focused on the acquisition, development and commercialization of novel treatments for patients with solid tumor cancers. On December 13, 2024, Checkpoint announced that the U.S. Food and Drug Administration (“FDA”) granted approval of cosibelimab-ipdl, now referred to as UNLOXCYT™, for the treatment of adults with metastatic cutaneous squamous cell carcinoma (“CSCC”) or locally advanced CSCC who are not candidates for curative surgery or curative radiation. The Company may acquire rights to these technologies by licensing the rights or otherwise acquiring an ownership interest in the technologies, funding their research and development and eventually either out-licensing or bringing the technologies to market.

The Company is a majority-controlled subsidiary of Fortress Biotech, Inc. (“Fortress”).

The Company’s common stock is listed on the NASDAQ Capital Market and trades under the symbol “CKPT.”

Recent Developments

On March 9, 2025, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Sun Pharmaceutical Industries, Inc., a Delaware corporation (“Sun Pharma” or “Parent”), and Snoopy Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Parent (“Merger Sub”). The Merger Agreement provides that, on the terms and subject to the conditions set forth in the Merger Agreement, Parent, Merger Sub and the Company will effect a merger of Merger Sub with and into the Company (the “Merger”), with the Company continuing as the surviving corporation of the Merger and a wholly owned subsidiary of Parent.

On April 14, 2025, the Company, Parent and Merger Sub entered into an Amendment to the Merger Agreement (the “Merger Agreement Amendment”). Pursuant to the Merger Agreement Amendment, the shareholder voting standard to approve the Merger was amended in response to recently enacted amendments to the Delaware General Corporation Law, as amended. Other than as expressly set forth in the Merger Agreement Amendment, the Merger Agreement remains unmodified and in full force and effect in accordance with its terms.

On April 14, 2025, the Company filed the definitive proxy statement relating to the Merger. The special meeting of Company stockholders to vote on the Merger and related matters will be held on May 28, 2025, at 10:00 a.m., Eastern Time, solely in virtual format.

For a more detailed description of the Merger Agreement, see Note 10.

Liquidity, Capital Resources and Going Concern

The Company has incurred substantial operating losses since its inception and expects to continue to incur significant operating losses for the foreseeable future and may never become profitable. As of March 31, 2025, the Company had an accumulated deficit of $381.8 million.

In January 2024, the Company closed on a registered direct offering (the “January 2024 Registered Direct Offering”) for the issuance and sale of an aggregate of 1,275,000 shares of its common stock at a purchase price of $1.805 per share of common stock. In addition, the offering includes 6,481,233 shares of common stock in the form of pre-funded warrants at a price of $1.8049. In a concurrent private placement, the Company issued and sold common warrants to purchase up to 7,756,233 shares of common stock. The common warrants are exercisable immediately upon issuance with an exercise price of $1.68 per share and will expire five years following the issuance date. The total gross proceeds from the January 2024 Registered Direct Offering were approximately $14.0 million with net proceeds of approximately $12.6 million after deducting approximately $1.4 million in commissions and other transaction costs.

In July 2024, the Company closed on a registered direct offering (the “July 2024 Registered Direct Offering”) for the issuance and sale of an aggregate of 1,230,000 shares of its common stock at a purchase price of $2.05 per share of common stock. In addition, the offering includes 4,623,659 shares of common stock in the form of pre - funded warrants at a price of $2.0499. In a concurrent private placement, the Company issued and sold common warrants to purchase up to 5,853,659 shares of common stock. The common warrants will be exercisable beginning on the effective date of stockholder approval of the issuance of the shares upon exercise with an exercise price of $2.05 per share and will expire five years following the issuance date. The total gross proceeds from the July 2024 Registered Direct

Offering were approximately $12.0 million with net proceeds of approximately $11.0 million after deducting approximately $1.0 million in commissions and other transaction costs.

In November 2024, the Company received approximately $9.2 million from the exercise of warrants for the issuance of 3,256,269 shares of common stock with an exercise price of $2.821 per share. Due to the beneficial ownership limitation provisions in the securities purchase agreement, the shares were initially unissued and held in abeyance for the benefit of the holder until notice from the holder that the shares may be issued in compliance with the agreement. These shares were fully issued to the holder in February 2025.

In January 2025, the Company received approximately $2.1 million from the exercise of warrants for the issuance of 740,000 shares of common stock with an exercise price of $2.84 per share.

In March 2025, the Company received approximately $36.0 million from the exercise of warrants for the issuance of 21,691,003 shares of common stock with an average exercise price of $1.66 per share.

In April 2025, the Company received approximately $9.2 million from the exercise of warrants for the issuance of 3,256,269 shares of common stock with an exercise price of $2.821 per share.

The Company expects to continue to use the proceeds from previous financing transactions primarily for general corporate purposes, which may include financing the Company’s growth, developing new or existing product candidates, and funding capital expenditures, acquisitions, and investments.

In accordance with Accounting Standards Codification (“ASC”) 205-40, Going Concern, the Company evaluated whether there are conditions and events, considered in the aggregate, that raise substantial doubt about its ability to continue as a going concern within one year after the date that these financial statements are issued. This evaluation initially does not take into consideration the potential mitigating effect of management’s plans that have not been fully implemented as of the date the financial statements are issued. When substantial doubt exists under this methodology, management evaluates whether the mitigating effect of its plans sufficiently alleviates substantial doubt about the Company’s ability to continue as a going concern. The mitigating effect of management’s plans, however, is only considered if both (1) it is probable that the plans will be effectively implemented within one year after the date that the financial statements are issued, and (2) it is probable that the plans, when implemented, will mitigate the relevant conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that these consolidated financial statements are issued. In performing its analysis, management excluded certain elements of its operating plan that cannot be considered probable. Under ASC 205-40, the future receipt of potential funding from future equity or debt issuances and other potential sources such as partnerships cannot be considered probable at this time because these plans are not entirely within the Company’s control nor have these plans been approved by the Board of Directors as of the date of these financial statements.

The Company believes that its cash and cash equivalents are only sufficient to fund its operating expenses into the first quarter of 2026, assuming no exercises of outstanding common stock warrants. The Company has suffered recurring losses from operations and has a net capital deficiency that raises substantial doubt regarding the Company’s ability to continue as a going concern for a period of one year after the date that these financial statements are issued. Management’s plans to alleviate the conditions that raise substantial doubt include reduced 2025 spending, including projected savings through delaying the development timelines of certain programs and the pursuit of additional cash resources through public or private equity or debt financings and potential partnerships. Management has concluded that the likelihood that its plan to successfully obtain sufficient funding from one or more of these sources, or adequately reduce expenditures, while reasonably possible, is less than probable. Accordingly, the Company has concluded that substantial doubt exists about the Company’s ability to continue as a going concern for a period of at least 12 months from the date of issuance of these financial statements. The Company’s estimate as to how long it expects its existing cash to be able to continue to fund its operations is based on assumptions that may prove to be wrong, and it could use its available capital resources sooner than it currently expects. Further, changing circumstances, some of which may be beyond its control, could cause the Company to consume capital faster than it currently anticipates, and it may need to seek additional funds sooner than planned. The Company cannot be certain that additional funding will be available to it on acceptable terms, or at all.

The accompanying 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 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 the outcome of the uncertainties described above.