Company: DVAX
Filing Date: 2025-04-15
Form Type: PRER14A
Source: 0000930413-25-001254
Chunk: 132

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-15
Form: PRER14A
Chunk 132
---
 – SUBJECT TO COMPLETION DATED APRIL 15, 2025

Y O U R V O T E I S I M P O R T A N T . P L E A S E V O T E T O D A Y .

V O T E B Y I N T E R N E T – Q U I C K A N D E A S Y

I M M E D I A T E – 2 4 H O U R S A D A Y , 7 D A Y S A W E E K O R B Y M A I L

Dynavax Technologies Corporation</div>

As a stockholder of Dynavax
Technologies Corporation, you have the option of voting your shares electronically through the Internet, eliminating the need
to return any proxy card. Your electronic vote authorizes the named proxies to vote your shares in the same manner as if you marked,
signed, dated and returned the proxy card. Votes submitted electronically over the Internet must be received by 8:59 p.m., Pacific
Time, on June 10, 2025.

VOTE BY INTERNET – WWW.CESVOTE.COM

Use the Internet to transmit your voting instructions prior to the closing of the polls
at the Annual Meeting. Have this proxy card in hand when you access the web site and follow the instructions to create an electronic
voting instruction form.

<div align='center'>OR</div>

VOTE BY TELEPHONE – 1-888-693-8683

Use any touch-tone telephone to transmit your voting instructions prior to the closing
of the polls at the Annual Meeting. Have this proxy card in hand when you call and then follow the instructions.

<div align='center'>OR</div>

VOTE BY MAIL

Mark, sign and date your proxy card below and promptly return it in the postage-paid
envelope we have provided to: Dynavax Technologies Corporation, c/o Corporate Election Services, P.O. Box 3230, Pittsburgh, PA
15230.

<div align='center'>If you vote by Internet or by telephone, you do NOT need to mail back your proxy card.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE ANNUAL MEETING OF STOCKHOLDERS:
THE PROXY STATEMENT AND ANNUAL REPORT ARE AVAILABLE AT WWW.VIEWOURMATERIAL.COM/DVAX</div>

| CONTROL NUMBER è |

| ê | If submitting a proxy by mail, please sign and date the