[8-K] Septerna, Inc. Reports Material Event

Rhea-AI Filing Summary

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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): July 1, 2025

Septerna, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware		001-42382		84-3891440
(State or Other Jurisdiction of Incorporation)		(Commission File Number)		(IRS Employer Identification No.)

250 East Grand Avenue
South San Francisco, California				94080
(Address of Principal Executive Offices)				(Zip Code)

Registrant’s Telephone Number, Including Area Code: 650 338-3533

Not Applicable

(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:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, par value $0.001 per share		SEPN		The Nasdaq Stock Market LLC

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 8.01. Other Events.

On July 1, 2025, the previously announced Collaboration and License Agreement, dated as of May 13, 2025 (the “Collaboration Agreement”), by and between Septerna, Inc. (the “Company”) and Novo Nordisk A/S, became effective following the early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended.

A summary of the terms of the Collaboration Agreement is set forth in the Company’s Current Report on Form 8-K filed with the Securities and Exchange Commission on May 14, 2025, which summary is qualified in its entirety by reference to the full text of the Collaboration Agreement, a copy of which the Company intends to file as an exhibit to its Quarterly Report on Form 10-Q for the quarter ended June 30, 2025.

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.

						Septerna, Inc.
Date: July 2, 2025				By:		/s/ Jeffrey Finer, M.D., Ph.D.
						Jeffrey Finer, M.D., Ph.D.
						President and Chief Executive Officer