Form 8-K Lexeo Therapeutics, Inc. For: Jun 25

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

Lexeo Therapeutics, Inc.

(Exact name of Registrant as Specified in Its Charter)

(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:

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 5.07 Submission of Matters to a Vote of Security Holders.

On June 25, 2026, Lexeo Therapeutics, Inc. (the “Company”) held its virtual 2026 Annual Meeting of Stockholders (the “Annual Meeting”) exclusively online via live webcast. The stockholders voted on the following proposals at the Annual Meeting:

Proposal 1. Election of Class III Directors

The Company’s stockholders elected the persons listed below as Class III Directors, to serve until the Company’s 2029 Annual Meeting of Stockholders and until their respective successors are elected and qualified, or until their earlier death, resignation or removal. The final voting results are as follows:

Proposal 2. Ratification of Appointment of Independent Registered Public Accounting Firm

The Company’s stockholders ratified the selection by the Audit Committee of the Company’s Board of Directors of KPMG LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026. The final voting results are as follows:

For more information about the foregoing proposals, see the Proxy Statements filed with the Securities and Exchange Commission on April 30, 2026.

SIGNATURES

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.