DYNAVAX TECHNOLOGIES CORP — Director's Dealing 2025

May 13, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DYNAVAX TECHNOLOGIES CORP (DVAX)
CIK: 0001029142
Period of Report: 2025-05-12

Reporting Person: Metzinger Joseph Anthony (VP, Chief Accounting Officer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-05-12	Option (Right
to Buy)	$9.85	A	31500	Acquired	2032-05-11	Common Stock (31500)	Direct
2025-05-12	Restricted Stock Unit	$	A	38182	Acquired		Common Stock (38182)	Direct

Footnotes

F1: This option grant will vest over three (3) years with one third (1/3) of the shares subject to the option vesting twelve months after the grant date of May 12, 2025, and one thirty-sixth (1/36) of the
shares subject to the option vesting each month thereafter.

F2: Each RSU represents a contingent right to receive one share of common stock. The RSUs vest over three years with 1/3 vesting on each annual anniversary of May 12, 2025.