DYNAVAX TECHNOLOGIES CORP — Director's Dealing 2012

May 31, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DYNAVAX TECHNOLOGIES CORP (DVAX)
CIK: 0001029142
Period of Report: 2012-05-30

Reporting Person: KESSEL MARK (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-05-30	Options (Right to Buy)	$3.68	A	17500	Acquired	2022-05-29	Common Stock (17500)	Direct

Footnotes

F1: This option vests fully on May 30, 2013, on the one year anniversary of the date of grant.

F2: Not applicable.