Company: DVAX
Filing Date: 2025-04-15
Form Type: PRER14A
Source: 0000930413-25-001254
Chunk: 133

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-15
Form: PRER14A
Chunk 133
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 GOLD proxy card below and fold and 
 detach card at perforation before mailing.                                                 | ê |

The undersigned hereby
appoints Ryan Spencer and John Slebir and each of them the undersigned’s true and lawful attorneys and
proxies (with full power of substitution in each) to vote all Common Stock of Dynavax Technologies Corporation
(“Dynavax” or the “Company”), standing in the undersigned’s name, at the Annual Meeting of
Stockholders of Dynavax to be held on June 11, 2025 at 7:00 a.m., Pacific Time, virtually at
www.cesonlineservices.com/dvax25_vm, and any adjournment or postponement thereof (the “Annual Meeting”),upon
those matters as described in the Proxy Statement for the Annual Meeting.

This GOLD Proxy Card when properly executed will be voted in the manner directed herein. If you mark a vote with respect to less than four (4) nominees in Proposal 1, your shares will only be voted FOR those nominees you have so marked. If you vote FOR more than four (4) nominees, all of your votes on Proposal 1 will be invalid and will not be counted. If this proxy is executed but no voting instructions are marked with respect to the applicable proposal, this proxy will be voted “FOR” each of the four (4) Board Nominees (indicated below) in the case of Proposal 1, “FOR” the proposal in the case of Proposals 2, 3 or 4, and “AGAINST” the proposal in the case of Proposal 5. In their discretion, the proxies are authorized to vote upon such other business as may properly come before the Annual Meeting (including and adjournment or postponement thereof).

| Signature                                                                                                                          |
| Date                                                                                                                               |
| Title or Authority                                                                                                                 |
| Signature if Held Jointly                                                                                                          |
| NOTE: Please sign exactly as name(s) appear(s) hereon. When signing                                                                
 as attorney, executor, administrator or other fiduciary, please give full title as such. Joint owners should each sign personally. 
 All holders must sign. If a corporation or partnership, please sign in full corporate or partnership name by authorized officer.   |

<div align='center'>(Continued and to be marked on the other side)</div>

<div align='center'>DYNAVAX TECHNOLOGIES CORPORATION

If you have questions or require any assistance with voting your shares,
please contact the Company’s
proxy