Company: DVAX
Filing Date: 2025-04-17
Form Type: DEFC14A
Source: 0000930413-25-001273
Chunk: 103

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-17
Form: DEFC14A
Chunk 103
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same address by delivering a single set of annual meeting materials addressed to those stockholders. This process, which is commonly referred
to as “householding,” potentially means extra convenience for stockholders and cost savings for companies.

This year, a number of brokers with account holders who are Dynavax
stockholders will be “householding” the Company’s Proxy Materials. A single set of Proxy Materials will be delivered
to multiple stockholders sharing an address unless contrary instructions have been received from the affected stockholders. Once you have
received notice from your broker that they will be “householding” communications to your address, “householding”
will continue until you are notified otherwise or until you revoke your consent. If, at any time, you no longer wish to participate in
“householding” and would prefer to receive a separate set of Proxy Materials, please notify your broker or Dynavax. Direct
your written request to Dynavax Technologies Corporation, Attention: Corporate Secretary, 2100 Powell Street, Suite 720, Emeryville, California
94608, or contact Dynavax’s Corporate Secretary at (510) 848-5100. Stockholders who currently receive multiple copies of the Proxy
Materials at their addresses and would like to request “householding” of their communications should contact their brokers.

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<div align='center'>QUESTIONS AND ANSWERS ABOUT THESE PROXY MATERIALS AND VOTING</div>

Why did I receive these materials?

Our Board is soliciting proxies for the Annual Meeting.
You are receiving a proxy statement because you owned shares of our common stock at the close of business
on April 14, 2025 (the “Record Date”), and that entitles
you to vote at the meeting. By use of a proxy, you can vote whether or not you attend the meeting. This proxy statement
describes the matters on which we would like you to vote and provides information on those matters so that you can make an
informed decision.

Who is Deep Track and how are they involved in the Annual Meeting?

Deep Track is a stockholder that has notified the Company that it intends
to (i) nominate the four Deep Track Nominees for election to the Board to run in opposition to the four Board Nominees recommended by
the Board (Brent MacGregor, Scott Myers, Lauren Silvernail and Elaine Sun) and (ii) submit the Bylaw Proposal for consideration at the
Annual Meeting. After careful consideration, the Board does NOT endorse