Cidara Therapeutics, Inc., or the Company, was originally incorporated in Delaware in December 2012 as K2 Therapeutics, Inc., and its name was changed to Cidara Therapeutics, Inc. in July 2014. The Company is a biotechnology company using its proprietary Cloudbreak® platform to develop drug-Fc conjugate, or DFC, therapeutics designed to save lives and improve the standard of care for patients facing serious diseases.

The Company’s most advanced Cloudbreak product candidate is CD388, a highly potent antiviral designed to deliver universal prophylaxis and treatment of seasonal and pandemic influenza, which has completed two Phase 1 studies and one Phase 2a study under a partnership with J&J Innovative Medicine, previously Janssen Pharmaceuticals, Inc., one of the Janssen Pharmaceutical Companies of Johnson & Johnson, or Janssen. On April 23, 2024, the Company and Janssen entered into a license and technology transfer agreement, or the Janssen License Agreement, under which the Company reacquired all rights for CD388 from Janssen to develop and commercialize CD388.

In June 2025, the Company announced positive topline results for its 5,041-subject, randomized, double-blind, placebo-controlled Phase 2b clinical trial, or the NAVIGATE study, evaluating the efficacy and safety of CD388 for pre-exposure prophylaxis of seasonal influenza in unvaccinated healthy subjects. The NAVIGATE study met its primary and all secondary efficacy endpoints for all dose groups. Single doses of 450mg, 300mg and 150mg of CD388 conferred 76.1%, 61.3% and 57.7% protection, respectively, from symptomatic influenza over 24 weeks compared to placebo. The placebo attack rate was 2.8% for the primary endpoint, and a clear dose response for efficacy was observed. CD388 was well-tolerated with no safety signals observed, and there were no meaningful changes in safety across the dose groups and placebo. Loss to follow-up rates were low and similar in all arms.

The Company formed wholly-owned subsidiaries, Cidara Therapeutics UK Limited, in England, and Cidara Therapeutics (Ireland) Limited, in Ireland, in March 2016 and October 2018, respectively, for the purpose of developing its product candidates in Europe.

The Company’s first commercially approved product in the United States, or U.S., was REZZAYO® (rezafungin for injection) which is indicated for the treatment of candidemia and invasive candidiasis in adults with limited or no alternative treatment options.

On April 24, 2024, the Company and Napp Pharmaceutical Group Limited, or Napp, an affiliate of Mundipharma Medical Company, or Mundipharma, entered into an asset purchase agreement, or the Napp Purchase Agreement, pursuant to which the Company sold to Napp all of the Company’s rezafungin assets and related contracts. The Company completed all conditions of the sale on April 24, 2024. The Company determined that the sale of rezafungin represented a strategic shift that will have a major effect on the Company’s operations and financial results. Accordingly, the sale of rezafungin is classified as discontinued operations.

The results from discontinued operations of the rezafungin assets prior and subsequent to its sale are presented as income from discontinued operations in the condensed consolidated statements of operations and comprehensive loss for all prior year periods presented, including any gain or loss recognized on closing. There were no assets and liabilities related to discontinued operations as of June 30, 2025 and December 31, 2024, as all balances were recognized in income from discontinued operations at the completion of the transaction. See Note 9 for additional information.

On April 23, 2024, the Company effected the approved 1-for-20 reverse stock split of its shares of common stock, or the Reverse Stock Split. All references in this Quarterly Report on Form 10-Q to the number of common shares, price per share and weighted average number of shares outstanding have been adjusted to reflect the Reverse Stock Split on a retroactive basis. As a result of the Reverse Stock Split, an immaterial amount was reclassified from common stock to additional paid-in capital.

The Company has a limited operating history and the sales and income potential of the Company’s business and market are unproven. The Company has experienced net losses and negative cash flows from operating activities since its inception. At June 30, 2025, the Company had an accumulated deficit of $660.5 million. The Company expects to continue to incur net losses into the foreseeable future. Successful transition to attaining profitable operations is dependent upon achieving a level of revenues adequate to support the Company’s cost structure.

The accompanying condensed consolidated financial statements are unaudited and have been prepared by the Company in accordance with U.S. generally accepted accounting principles, or GAAP, as found in the Accounting Standards Codification, or ASC, of the Financial Accounting Standards Board, or FASB. Certain information and footnote disclosures normally included in the Company’s annual financial statements have been condensed or omitted. These interim condensed consolidated financial statements, in the opinion of management, reflect all normal recurring adjustments necessary for a fair presentation of the Company’s financial position and results of operations for the interim periods ended June 30, 2025 and 2024.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of expenses during the reporting period. The Company evaluates its estimates and assumptions on an ongoing basis. The most significant estimates in the Company’s condensed consolidated financial statements relate to estimated collaboration expenses related to the Company’s collaboration and license agreements, certain accruals, including those related to nonclinical and clinical activities, and the stand-alone selling price of performance obligations associated with the Company’s collaboration, license, and purchase agreements. Although the estimates are based on the Company’s knowledge of current events, comparable companies, and actions it may undertake in the future, actual results may ultimately materially differ from these estimates and assumptions.

Operating segments are identified as components of an enterprise about which separate discrete financial information is available for evaluation by the chief operating decision maker, or CODM, which is the Chief Executive Officer of the Company. The Company views its operations and manages its business as a single reportable segment with a single operating segment.

The Company manages research and development, or R&D, activities on a consolidated basis. The Company expects to generate future revenue from a combination of license fees and other upfront payments, funded R&D agreements, milestone payments, product sales, government and other third-party funding, and royalties, which depend on the results, regulatory approval, and timing of the successful commercialization of its product candidates.

Comprehensive loss is the measure of segment profit or loss used by CODM in making decisions regarding resource allocation and assessing performance, which is also reported on the condensed consolidated statements of operations and comprehensive loss. The measure of segment assets is reported on the condensed consolidated balance sheets as total assets.


	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2025		2024		2025		2024
Revenues generated in the U.S.	$	—	$	302	$	—	$	1,275
Less:
Acquired in-process research and development	—		(84,883)		—		(84,883)
Research and development - Cloudbreak platform	(21,520)		(2,714)		(43,029)		(5,585)
Personnel costs	(6,601)		(5,230)		(12,678)		(9,436)
General and administrative	(2,591)		(2,847)		(5,126)		(4,615)
Other research and development costs	(607)		(612)		(1,265)		(1,282)
Reversal due to settlement of indirect tax liabilities	3,935		—		9,445		—
Other segment items:
Other income, net	1,666		1,774		3,455		2,139
Income from discontinued operations, net of income taxes	—		3,001		—		852

Segment net loss and comprehensive loss	$	(25,718)	$	(91,209)	$	(49,198)	$	(101,535)

The settlement of certain indirect tax liabilities resulted in the reversal of $3.9 million and $9.4 million in legal liabilities during the three and six months ended June 30, 2025, respectively, which consisted of $0.5 million and $4.2 million in indirect tax amounts that were determined not to be due and payable during the three and six months ended June 30, 2025, respectively, and $3.4 million and $5.2 million in indirect tax interest and penalties that were determined not to be due and payable during the three and six months ended June 30, 2025, respectively.