Company: DVAX
Filing Date: 2025-04-17
Form Type: PRRN14A
Source: 0001193125-25-084044
Chunk: 38

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-17
Form: PRRN14A
Chunk 38
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BSITE AT WWW.SEC.GOV .

| Deep Track Biotechnology Master Fund, Ltd |
| April [●], 2025                           |

36

Annex A

INFORMATION CONCERNING PARTICIPANTS IN THE SOLICITATION

The Deep Track Parties and each of Mr. Erkman, Mr. Farrow, Mr. Mullette and Mr. Santel may be deemed
“participants” under SEC rules in this solicitation. Information regarding the participants in the solicitation is set forth below.

Except as described in the Proxy Statement, no Participant in this solicitation beneficially owns any securities of the Company or has any
personal ownership interest, direct or indirect, in any securities of the Company. Set forth in this Annex A are transactions in the Company’s securities effected by the participants in this solicitation within the past two years. The
source of funding for these transactions was derived from the capital of Deep Track Fund. The Deep Track Shares (other than the Common Stock held by the Record Stockholder) which Deep Track Fund holds in “street name” may be held in
brokerage custodian accounts which, from time to time in the ordinary course, may utilize margin borrowing in connection with purchasing, borrowing or holding of securities, and such shares of Common Stock may thereby have been, or in the future may
become, subject to the terms and conditions of such margin debt and terms, together with all other securities held therein. Except as described herein, as of the date hereof, no part of the purchase price or market value of any securities of the
Company described inAnnex Aare represented by funds that were borrowed or otherwise obtained for the purpose of acquiring or holding such securities by any participant.

PERSONS MAKING THE SOLICITATION AND OTHER PARTICIPANTS:

The name, principal business address and the principal occupation or employment of the Deep Track Parties and the other participants in this
solicitation are set forth below.

DEEP TRACK CAPITAL

Deep Track Capital is a Delaware limited partnership whose principal business address is 200 Greenwich Avenue, 3 Floor, Greenwich, Connecticut 06830. The principal business of Deep Track Capital is to serve as the investment manager of Deep Track Fund.

DEEP TRACK FUND

Deep Track Fund is a
Cayman Islands exempted company whose principal business address is c/o Walkers Corporate Limited, 190 Elgin Avenue, George Town, KY1-9001, Cayman Islands. The principal business of Deep Track Fund is to
invest