Company: DVAX
Filing Date: 2025-03-10
Form Type: DFAN14A
Source: 0001193125-25-050430
Chunk: 8

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-03-10
Form: DFAN14A
Chunk 8
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 share, of DVAX (the “Common Stock”). The Deep Track Shares collectively represent approximately 14.34% of the outstanding shares of Common Stock based on 124,070,829 shares of Common Stock outstanding as of
February 18, 2025 as

reported in DVAX’s Annual Report on Form 10-K for the year ended December 31, 2024. Each of the Deep Track Parties may be deemed to have the
shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) all of the Deep Track Shares. As of the date hereof, none of the other Participants beneficially own any shares of Common Stock.

IMPORTANT INFORMATION AND WHERE TO FIND IT

DEEP TRACK
STRONGLY ADVISES ALL STOCKHOLDERS OF DVAX TO READ THE PRELIMINARY PROXY STATEMENT, ANY AMENDMENTS OR SUPPLEMENTS TO SUCH PROXY STATEMENT, AND OTHER PROXY MATERIALS WHEN FILED BY DEEP TRACK WITH THE SEC BECAUSE THEY WILL CONTAIN IMPORTANT
INFORMATION. SUCH PROXY MATERIALS WILL BE AVAILABLE AT NO CHARGE ON THE SEC’S WEBSITE AT . THE DEFINITIVE PROXY STATEMENT, WHEN FILED, AND OTHER RELEVANT DOCUMENTS, WILL ALSO BE AVAILABLE BY DIRECTING A REQUEST TO THE
PARTICIPANTS’ PROXY SOLICITOR, INNISFREE M&A INCORPORATED, 501 MADISON AVENUE, 20FLOOR, NEW YORK, NY 10022 (STOCKHOLDERS CAN CALL TOLL-FREE: (877)-687-1865)