Company: DVAX
Filing Date: 2025-04-03
Form Type: PREC14A
Source: 0000930413-25-001153
Chunk: 5

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-03
Form: PREC14A
Chunk 5
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ated Bylaws to repeal each provision of, or amendment to, the Company’s Amended and Restated Bylaws adopted by the Board without stockholder approval 
 subsequent to November 6, 2018, if properly presented by Deep Track at the Annual Meeting                                                                                                                            |     | AGAINST                                                                                                       |

In addition, you will be asked to conduct other business,
if any, as may properly come before the Annual Meeting or any adjournment thereof.

These items of business are more fully described in
the accompanying proxy statement.

The record date for the Annual Meeting is, 2025 (the
“Record Date”). Only stockholders of record at the close of business on that date may vote at the meeting or any adjournment
thereof.

<div align='center'>The Proxy Statement and Annual Report to Stockholders for the year ended December 31, 2024, are available at https://investors.dynavax.com/annuals-and-proxies.</div>

| By Order of the Board of Directors |
| Ryan Spencer                       |
| Chief Executive Officer            |

Emeryville, California

, 2025

Your Vote is Very Important

Please note that Deep Track Capital, LP, Deep Track Biotechnology Master
Fund, Ltd. and David Kroin (collectively, “Deep Track”) have provided notice of their intention to nominate four candidates
(each a “Deep Track Nominee”) to stand for election as directors at the Annual Meeting in opposition to the four nominees
recommended by the Board and to bring a proposal to amend the Company’s Amended and Restated Bylaws (the “Bylaw Proposal”)
before the Annual Meeting. Pursuant to Securities and Exchange Commission (“SEC”) rules, the Company is required to show the
Deep Track Nominees and the Bylaw Proposal on our GOLDproxy card and GOLDvoting instruction form, but this does not constitute
the Board’s endorsement or recommendation of the Deep Track Nominees or the Bylaw Proposal. Additionally, you may receive solicitation
materials from Deep Track, including a proxy statement and a white proxy card or white voting instruction form. The Company is not responsible
for the accuracy or completeness of any information provided by or relating to Deep Track or the Deep Track Nominees contained in solicitation
materials filed or disseminated by or on behalf of Deep Track or any other statements Deep Track may make.

The Board does NOTendorse any of the Deep
Track Nominees or the Bylaw Proposal and unanimously recommends that you use