UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 27, 2026

CORMEDIX INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (908) 517-9500

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2, below):

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

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

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. ☐

Item 7.01 Regulation FD Disclosure

On April 27, 2026, CorMedix, Inc. (the “Company” or “CorMedix”) issued a press release announcing an update related to the initial readout of topline data for the Phase III study (ReSPECT) assessing REZZAYO® (rezafungin for injection) for prophylaxis of invasive fungal infections. A copy of the press release is furnished as Exhibit 99.1, attached hereto. 

The information in this Item 7.01 (including Exhibit 99.1) shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Forward-Looking Statements

This Current Report on Form 8-K contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act, and Section 21E of the Exchange Act, that are subject to risks and uncertainties. Forward-looking statements are often identified by the use of words such as, but not limited to, “anticipate,” “believe,” “can,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “project,” “seek,” “should,” “target,” “will,” “would,” and similar expressions or variations intended to identify forward-looking statements. All statements, other than statements of historical facts, regarding management’s expectations, beliefs, goals, plans or CorMedix’s prospects should be considered forward-looking statements including, but not limited to statements regarding the risk that topline data from CorMedix’s and its partners’ clinical trials, including the ReSPECT study, that CorMedix announces or publishes from time to time may change as more patient data become available or may be interpreted differently if additional data is disclosed; estimates of total addressable market size; expectations regarding product utilization and sales; failure to successfully conduct future clinical trials, including due to CorMedix’s or its partners’ potential inability to enroll or retain sufficient patients to conduct and complete the trials or generate data necessary for regulatory approval, among other things; development of unexpected safety or efficacy concerns related to CorMedix’s product candidates; expectations and timing regarding clinical trials and development and expectations of CorMedix’s product pipeline; expectations regarding implementation and perceived benefits of CorMedix’s products; continued pricing pressures and the impact of actions of governmental and private payers affecting pricing of, reimbursement for, and patient access to pharmaceuticals; and reporting obligations related thereto, the expiration of intellectual property protection for certain of the company's products and competition from generic and biosimilar products. Readers are cautioned that actual results may differ materially from projections or estimates due to a variety of important factors, and readers are directed to the Risk Factors identified in CorMedix’s filings with the SEC, including its most recent Annual Report on Form 10-K, copies of which are available free of charge at the SEC’s website at www.sec.gov or upon request from CorMedix. CorMedix may not actually achieve the goals or plans described in its forward-looking statements, and such forward-looking statements speak only as of the date of this Current Report on Form 8-K. Investors should not place undue reliance on these statements. CorMedix assumes no obligation and does not intend to update these forward-looking statements, except as required by law.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

SIGNATURE

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