DYNAVAX TECHNOLOGIES CORP — Director's Dealing 2013

May 3, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DYNAVAX TECHNOLOGIES CORP (DVAX)
CIK: 0001029142
Period of Report: 2013-05-01

Reporting Person: Gray Eddie (Director, CEO and Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-01	Option (Right to Buy)	$2.21	A	1500000	Acquired	2023-04-30	Common Stock (1500000)	Direct

Footnotes

F1: This option grant will vest over four (4) years with one fourth (1/4) of the shares subject to the option vesting twelve months after the grant date, and one forty-eighth (1/48) of the shares subject to the option vesting on the last day of each month thereafter.

F2: Not applicable.