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): October 15, 2025

Dynavax Technologies Corporation

(Exact name of Registrant as Specified in Its Charter)

Delaware

001-34207

33-0728374

(State or Other Jurisdiction

of Incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)


2100 Powell Street, Suite 720
Emeryville, CA		94608
(Address of Principal Executive Offices)		(Zip Code)

Registrant’s Telephone Number, Including Area Code: (510) 848-5100

(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, $0.001 par value

DVAX

Nasdaq Global Select 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.

In connection with an internal realignment of various management roles and responsibilities, on October 15, 2025, the Board of Directors (the “Board”) of Dynavax Technologies Corporation (the “Company”) approved the transition of David F. Novack from his roles as the Company’s President and Chief Operating Officer to his new roles as Senior Vice President and Chief Operating Officer, effective January 1, 2026. The Board also approved the removal of Robert Janssen, M.D.’s roles as Chief Medical Officer and Senior Vice President, Clinical Development, Medical and Regulatory Affairs, effective upon the earlier to occur of (a) the date the Company employs a new Chief Medical Officer and (b) March 2, 2026, and further approved the conclusion of Dr. Janssen’s employment as of March 2, 2026.

The Company has commenced a search process for a successor Chief Medical Officer.

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 thereunto duly authorized.

Dynavax Technologies Corporation

Date: October 15, 2025

/s/ John Slebir

John Slebir

Senior Vice President, General Counsel

DYNAVAX TECHNOLOGIES CORP 8-K