Annexon (ANNX) chairman Thomas Wiggans plans Board retirement in 2026

Rhea-AI Filing Summary

Annexon, Inc. reported that Thomas G. Wiggans, its Chairman of the Board, intends to retire from the Board and will not stand for reelection at the company’s 2026 annual meeting of stockholders. His term as director and Chairman will end when his current term expires at that meeting.

Until the conclusion of the 2026 annual meeting, Mr. Wiggans will continue to serve as Chairman of the Board and as a member of the Compensation Committee and the Nominating and Corporate Governance Committee. The company stated that his decision to step down was not due to any disagreement regarding operations, policies, practices, strategy, management, or the Board.

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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): February 12, 2026

ANNEXON, INC.

(Exact name of registrant as specified in its charter)

Delaware		001-39402		27-5414423
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

1400 Sierra Point Parkway, Bldg C, Suite 200 Brisbane, California		94005
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (650) 822-5500

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		ANNX		The Nasdaq Stock Market

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 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

On February 12, 2026, Thomas G. Wiggans, Chairman of the Board of Directors (the “Board”) of Annexon, Inc. (the “Company”), notified the Company of his intent to retire as a member of the Board and therefore not stand for reelection at the Company’s 2026 annual meeting of stockholders (the “2026 Annual Meeting”). Accordingly, Mr. Wiggans’ term as a director will end when his current term expires at the 2026 Annual Meeting. Mr. Wiggans will remain in his roles as the Chairman of the Board and as a member of the Compensation Committee and Nominating and Corporate Governance Committee of the Board until the conclusion of the 2026 Annual Meeting. The Company’s management and the Board thank Mr. Wiggans for his eight years of dedicated service on the Board and many positive contributions to the Company.

Mr. Wiggans’s resignation was not the result of any disagreement with the Company on any matter related to the Company’s operations, policies, practices or strategy, the Company’s management or the Board.

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.

				Annexon, Inc.
Date: February 17, 2026				By:		/s/ Jennifer Lew
						Jennifer Lew
						Executive Vice President and Chief Financial Officer

FAQ

What board change did Annexon (ANNX) disclose in this 8-K?

Annexon disclosed that Chairman Thomas G. Wiggans plans to retire from the Board and will not stand for reelection at the 2026 annual meeting, ending his service as director and Chairman when his current term expires at that meeting.

When will Thomas G. Wiggans’ term as Annexon (ANNX) director end?

Thomas G. Wiggans’ term as an Annexon director will end at the company’s 2026 annual meeting of stockholders, when his current term expires. He will remain Chairman and serve on key board committees until that meeting concludes.

Does Annexon say Wiggans’ retirement involves any disagreement with the company?

Annexon states that Thomas G. Wiggans’ decision to retire from the Board did not result from any disagreement involving the company’s operations, policies, practices, strategy, management, or Board, indicating the transition is not tied to a reported dispute.

What board committees will Wiggans serve on at Annexon (ANNX) until retirement?

Until the 2026 annual meeting, Thomas G. Wiggans will continue as Chairman of the Board and serve on Annexon’s Compensation Committee and its Nominating and Corporate Governance Committee, maintaining his leadership roles through the end of his current term.

How long has Thomas G. Wiggans served on Annexon’s Board?

Annexon notes that Thomas G. Wiggans has provided eight years of service on its Board. The company and its Board expressed appreciation for his long tenure and many positive contributions as he prepares to retire at the 2026 annual meeting.

Filing Exhibits & Attachments

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