Company: DVAX
Filing Date: 2025-02-19
Form Type: DFAN14A
Source: 0001193125-25-029690
Chunk: 12

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-02-19
Form: DFAN14A
Chunk 12
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 “Deep Track Parties”), Brett A. Erkman, Jeffrey S. Farrow, Michael Mullette and Donald J. Santel (such individuals,
collectively with the Deep Track Parties, the “Participants”).

As of the date hereof, the Deep Track Parties beneficially own an aggregate of
17,791,486 shares (the “Deep Track Shares”) of the common stock, par value $0.001 per share, of DVAX (the “Common Stock”). The Deep Track Shares collectively represent approximately 13.53% of the outstanding shares of Common
Stock based on 131,454,561 shares of Common Stock outstanding as of November 5, 2024 as reported in DVAX’s Quarterly Report on Form 10-Q for the quarter ended September 30, 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)