David F. Novack - 23 Dec 2025 Form 4 Insider Report for DYNAVAX TECHNOLOGIES CORP (DVAX)

Role
President & COO
Signature
David F. Novack, by /s/ Trevor Dutcher, Attorney-in-Fact
Issuer symbol
DVAX
Transactions as of
23 Dec 2025
Net transactions value
-$963,786
Form type
4
Filing time
29 Dec 2025, 16:09:33 UTC
Previous filing
26 Mar 2025
Next filing
20 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Novack David F President & COO C/O DYNAVAX TECHNOLOGIES, 2100 POWELL STREET, SUITE 720, EMERYVILLE David F. Novack, by /s/ Trevor Dutcher, Attorney-in-Fact 29 Dec 2025 0001573072

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DVAX Common Stock Award +60,625 +644% 70,043 23 Dec 2025 Direct F1, F2, F3
transaction DVAX Common Stock Options Exercise +22,620 +32% 92,663 23 Dec 2025 Direct F1, F3, F4
transaction DVAX Common Stock Options Exercise +18,788 +20% 111,451 23 Dec 2025 Direct F1, F3, F4
transaction DVAX Common Stock Options Exercise $136,100 +20,000 +18% $6.80 131,451 24 Dec 2025 Direct F3, F5
transaction DVAX Common Stock Options Exercise $104,700 +10,000 +7.6% $10.47 141,451 24 Dec 2025 Direct F3, F5
transaction DVAX Common Stock Sale $464,700 -30,000 -21% $15.49 111,451 24 Dec 2025 Direct F3, F5
transaction DVAX Common Stock Tax liability $739,886 -48,107 -43% $15.38 63,344 24 Dec 2025 Direct F3, F6

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction DVAX Restricted Stock Unit Options Exercise -22,620 -50% 22,620 23 Dec 2025 Common Stock 22,620 Direct F1, F4, F7
transaction DVAX Restricted Stock Unit Options Exercise -18,788 -33% 37,576 23 Dec 2025 Common Stock 18,788 Direct F1, F4, F8
transaction DVAX Stock Option (Right to Buy) Options Exercise -20,000 -11% 166,528 24 Dec 2025 Common Stock 20,000 $6.80 Direct F5, F9, F10
transaction DVAX Stock Option (Right to Buy) Options Exercise -10,000 -10% 85,655 24 Dec 2025 Common Stock 10,000 $10.47 Direct F5, F9, F10
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On December 23, 2025 (the "Effective Date"), in connection with the execution of an Agreement and Plan of Merger dated as of the Effective Date (the "Merger Agreement") by and among the Issuer, SANOFI, a French societe anonyme ("Parent"), and Samba Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Parent, the Board of Directors of the Issuer approved acceleration of vesting of certain performance-based restricted stock units ("PSUs") and restricted stock units ("RSUs") previously granted to the Reporting Person, effective as of the Effective Date.
F2 Represents PSUs previously granted to the Reporting Person that vest based on how the Issuer's total stockholder return compares to the total stockholder return of an indexed group of companies ("rTSR") over a performance period ending on December 31, 2025. Each PSU represents a contingent right to receive one share of common stock. On the Effective Date, the Board of Directors of the Issuer determined that these PSUs (which represent 125% of the target number of PSUs) were earned according to achievement of the rTSR performance condition over a shortened performance period, with the Issuer's total stockholder return determined based on the amount payable for a share of the Issuer's common stock pursuant to the Merger Agreement ($15.50), and approved such acceleration of vesting of the earned PSUs.
F3 Includes 1,340 shares purchased through the Issuer's Employee Stock Purchase Plan on August 15, 2025.
F4 Each RSU represents a contingent right to receive one share of the Issuer's common stock.
F5 The sales reported on this Form 4 were effected pursuant to a 10b5-1 trading plan adopted on December 6, 2024.
F6 Shares withheld by the Issuer to satisfy tax withholding requirements on vesting of PSUs and RSUs.
F7 The RSUs were granted on February 15, 2024, and were originally scheduled to vest over three years, with 1/3 vesting on each anniversary of February 15, 2024.
F8 The RSUs were granted on February 13, 2025, and were originally scheduled to vest over three years, with 1/3 vesting on each anniversary of February 13, 2025.
F9 Fully vested.
F10 Not applicable.