X0306 4 2022-05-26 0 0001029142 DYNAVAX TECHNOLOGIES CORP DVAX 0001657434 Hack Andrew A. F. C/O BAIN CAPITAL LIFE SCIENCES INVESTORS LLC 200 CLARENDON STREET BOSTON MA 02116 1 0 0 0 Restricted Stock Unit 2022-05-26 4 A 0 5357 0.00 A Common Stock 5357 5357 D Option (Right to Buy) 11.68 2022-05-26 4 A 0 22500 0.00 A 2029-05-25 Common Stock 22500 22500 D Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of common stock. The RSU will fully vest one year from the date of grant, provided that Reporting Person continues to provide services to the Company through such vesting date. The release of RSU shares shall be mandatorily deferred until the Reporting Person no longer provides services to the Company. This option grant fully vests and becomes exercisable one year from date of grant, provided that Reporting Person continues to provide services to the Company through such vesting date. /s/ Andrew Hack 2022-05-27