Company: DVAX
Filing Date: 2025-04-17
Form Type: DEFC14A
Source: 0000930413-25-001273
Chunk: 9

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-17
Form: DEFC14A
Chunk 9
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 8:59 p.m. Pacific Time on June 10, 2025. If you hold shares
in street name, you may be able to vote on the internet or by telephone as permitted by your bank, broker or other nominee.

Voting by Mail. If you are a stockholder of record and received
these proxy materials by mail, you may vote by completing, signing and dating your GOLDproxy card and returning it in the prepaid
envelope. If you sign and return your GOLDproxy card, but do not direct how your shares should be voted on a proposal, the proxy
holders will vote your shares “FOR” the four Board Nominees, “FOR” Proposals 2, 3, and 4, and “AGAINST”
Proposal 5, as applicable. If you sign and return your GOLDproxy card, the proxy holders will vote your shares according to their
discretion to adjourn the Annual Meeting, including for the purpose of soliciting votes in accordance with our Board’s recommendations,
and on any other proposals and other matters that may be brought before the Annual Meeting.

Voting by E-mail. If you received these proxy materials via
e-mail, the e-mail message transmitting the link to these materials contains instructions on how to vote your shares of Company stock
and your control number.

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<div align='center'>How to Vote if Your Shares are Held in the Name of a Broker or Other Agent</div>

If you hold shares in street name, you should complete, sign and
date the GOLDvoting instruction form provided to you by your bank, broker or other nominee. The availability of online
or phone voting may depend on the voting process of the organization that holds your shares. Beneficial owners who want to attend
and also vote at the Annual Meeting will need to obtain a legal proxy, in PDF or Image (gif, jpg or png) file format, from the
organization that holds their shares giving them the right to vote their shares at the Annual Meeting. Holders who wish to attend
and/or vote at the Annual Meeting must pre-register at least 24 hours prior to the Annual Meeting at www.cesonlineservices.com/dvax25_vm.

<div align='center'>Cast Your Vote Right Away</div>

| Proposal                                                                                                                                                                                                                      |     | More Information                          |     | Board Recommendation                                                                           |
| Proposal 1: To elect four nominees as Class I directors to hold office until the 2028 Annual Meeting of Stockholders or