Company: DVAX
Filing Date: 2025-04-17
Form Type: PRRN14A
Source: 0001193125-25-084044
Chunk: 43

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-17
Form: PRRN14A
Chunk 43
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 options to purchase 78,750 
 shares of common stock exercisable within 60 days of March 14, 2025.                                    |

II-2

| (23) | Total number of shares includes common stock, in aggregate, held as of March 14, 2025, by our executive                                                                                                     
 officers and directors and entities affiliated with such executive officers and directors. Also includes options to purchase 4,584,089 shares of common stock exercisable within 60 days of March 14, 2025. |

II-3

IMPORTANT

Your vote is important. No matter how many shares of Common Stock you own, please vote your proxy FORthe election of the four Deep
Track Nominees and in accordance with our recommendations on the other proposals on the agenda for the 2025 Annual Meeting by following the instructions set forth on the enclosed WHITE proxy card VOTE VIA THE INTERNET OR BY TELEPHONE or by
MARKING, SIGNING, DATING AND MAILINGthe enclosed WHITEproxy card TODAYin the envelope provided (no postage is required if mailed in the United States).

If any of your shares of Common Stock are held in the name of a broker, only it can vote such shares of Common Stock and only upon receipt of your specific instructions.Depending upon your broker, you may be able to vote either by toll-free telephone or by the Internet. Please refer to the enclosed WHITE voting instruction form for instructions on how to vote
electronically. You may also vote by marking, signing, dating and returning the enclosed WHITE voting instruction form by mail in the postage-paid envelope provided.

If you have any questions or require any additional information concerning this Proxy Statement, please contact Innisfree using the contact
information set forth below.

If you have any questions, require assistance in voting yourWHITEproxy card, or need additional copies of Deep Track’s proxy materials, please contact Innisfree using the contact information provided here:

Innisfree M&A Incorporated.

501 Madison Avenue, 20 thFloor

New York, New York 10022

Stockholders call toll-free (877)-687-1865

Banks and Brokers call: (212) 750-5833

PRELIMINARY PROXY CARD, SUBJECT TO COMPLETION PLEASE VOTE TODAY! SEE REVERSE SIDE FOR THREE EASY WAYS TO VOTE. TO VOTE BY MAIL PLEASE DETACH HERE, SIGN AND DATE THIS PROXY CARD, AND RETURN IN THE POSTAGE-PAID ENVELOPE PROVIDED