Company: DVAX
Filing Date: 2025-04-03
Form Type: PREC14A
Source: 0000930413-25-001153
Chunk: 9

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-03
Form: PREC14A
Chunk 9
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 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.

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.

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                                                                                                       
 until their respective successors are duly elected and qualified                                                                                                                                                              |     | Page 15                                   |     | FOR the four Board- recommended nominees