Company: DVAX
Filing Date: 2025-04-07
Form Type: PREC14A
Source: 0001193125-25-074629
Chunk: 27

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-07
Form: PREC14A
Chunk 27
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 the 2025
Annual Meeting. Through the attached Proxy Statement and enclosed WHITEproxy card, we are soliciting proxies to elect the four Deep Track Nominees.

Stockholders are permitted to vote for less than four nominees or for any combination (up to four total) of the Deep Track Nominees and the
Company’s nominees on the WHITEproxy card. We believe the best opportunity for all four of the Deep Track Nominees to be elected is by voting on the WHITEproxy card. The Deep Track Parties therefore urge Stockholders using our
WHITEproxy card to vote “FOR”all four of the Deep Track Nominees.

IMPORTANTLY, IF YOU MARK MORE THAN FOUR “FOR” BOXES WITH RESPECT TO THE ELECTION OF DIRECTORS, ALL OF YOUR VOTES FOR THE ELECTION OF DIRECTORS WILL BE DEEMED INVALID.

Quorum; Abstentions and Broker Non-Votes;No Discretionary Voting

A quorum of Stockholders is
necessary to hold a valid meeting. According to the Company’s proxy statement, a quorum will be present if Stockholders holding at least a majority of the outstanding shares of Common Stock entitled to vote are present virtually at the 2025
Annual Meeting or represented by proxy. According to the Company’s proxy statement, at the close of business on the Record Date, there were [●] shares of Common Stock outstanding. Thus, a total of [●] shares are entitled to vote at
the 2025 Annual Meeting and holders of Common Stock representing at least [●] votes must be represented at the 2025 Annual Meeting or by proxy to have a quorum.

Your shares will be counted towards the quorum only if you submit a valid proxy (or if one is submitted on your behalf by your broker, bank or
other agent) or if you vote at the 2025 Annual Meeting. According to the Company’s proxy statement, if there is no quorum, the chairman of the meeting or the Stockholders holding a majority of the shares present virtually at the 2025 Annual
Meeting or represented by proxy may adjourn the 2025 Annual Meeting to another date.

27

If you are a beneficial owner, your broker will vote your shares pursuant to your
instructions. Based on information contained in the Company’s proxy statement, brokers will not have discretionary authority to vote on any of the proposals at the 2025 Annual Meeting, including the ratification of independent registered public
accounting firm. A broker’s inability to vote