DISCLAIMER

The views expressed on this website represent the opinions of DeepTrack Capital, LP (“Deep Track”) and the other participants in its solicitation (collectively, the “Participants”), which beneficially own shares of Dynavax Technologies Corporation (the “Corporation”), and are based on publicly available information with respect to the Corporation. The Participants recognize that there may be confidential information in the possession of the Corporation that could lead it or others to disagree with the Participants’ conclusions. The Participants reserve the right to change any of the opinions expressed herein at any time as they deem appropriate and disclaim any obligation to notify the market or any other party of any such changes. The Participants disclaim any obligation to update the information or opinions contained on this website.

Certain financial projections and statements made herein have been derived or obtained from filings made with the Securities and Exchange Commission (“SEC”) or other regulatory authorities and from other third-party reports. Neither the Participants nor any of their affiliates shall be responsible or have any liability for any misinformation contained in any third-party SEC or other regulatory filing or third-party report. There is no assurance or guarantee with respect to the prices at which any securities of the Corporation will trade, and such securities may not trade at prices that may be implied herein. The estimates, projections and potential impact of the opportunities identified by the Participants herein are based on assumptions that the Participants believe to be reasonable as of the date of the materials on this website, but there can be no assurance or guarantee that actual results or performance of the Corporation will not differ, and such differences may be material.

The materials on this website are provided merely as information and are not intended to be, nor should they be construed as, an offer to sell or a solicitation of an offer to buy any security. These materials do not recommend the purchase or sale of any security. The Participants currently beneficially own shares of the Corporation.  It is possible that there will be developments in the future that cause the Participants from time to time to sell all or a portion of their holdings of the Corporation in open market transactions or otherwise (including via short sales), buy additional shares(in open market or privately negotiated transactions or otherwise), or trade in options, puts, calls or other derivative instruments relating to such shares.

Although the Participants believe the statements made in this website are substantially accurate in all material respects and does not omit to state material facts necessary to make those statements not misleading, the Participants make no representation or warranty, express or implied, as to the accuracy or completeness of those statements or any other written or oral communication it makes with respect to the Corporation and any other companies mentioned, and the Participants expressly disclaim any liability relating to those statements or communications (or any inaccuracies or omissions therein). Thus, stockholders and others should conduct their own independent investigation and analysis of those statements and communications and of the Corporation and any other companies to which those statements or communications may be relevant.

This website may contain links to articles and/or videos (collectively, “Media”). The views and opinions expressed in such Media are those of the author(s)/speaker(s)referenced or quoted in such Media and, unless specifically noted otherwise, do not necessarily represent the opinion of the Participants.

This website may not be deemed to constitute solicitation material and is intended solely to inform stockholders so that they may make an informed decision regarding the proxy solicitation, as explained in greater detail below.

This website may employ cookies. The publicly accessible areas of this website do not automatically gather any personal information, and such information will not be collected unless information such as your name, phone number or e-mail address is provided voluntarily. However, we reserve the right to gather non-personal information and perform statistical analysis of user behavior and patterns of this website.

‍CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

The information herein contains “forward-looking statements.” Specific forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts and include, without limitation, words such as “may,” “will,” “expects,” “believes,” “anticipates,” “plans,” “estimates,” “projects,” “potential,” “targets,” “forecasts,” “seeks,” “could,” “should” or the negative of such terms or other variations on such terms or comparable terminology. Similarly, statements that describe our objectives, plans or goals are forward-looking. Forward-looking statements are subject to various risks and uncertainties and assumptions. There can be no assurance that any idea or assumption herein is, or will be proven correct. If one or more of the risks or uncertainties materialize, or if any of the underlying assumptions of Deep Track Capital, LP (“Deep Track”) or any of the other participants in the proxy solicitation described herein prove to be incorrect, the actual results may vary materially from outcomes indicated by these statements. Accordingly, forward looking statements should not be regarded as are presentation by Deep Track that the future plans, estimates or expectations contemplated will ever be achieved.

Certain statements and information included herein may have been sourced from third parties. Deep Track does not make any representations regarding the accuracy, completeness or timeliness of such third party statements or information. Except as may be expressly set forth herein, permission to cite such statements or information has neither been sought nor obtained from such third parties. Any such statements or information should not be viewed as an indication of support from such third parties for the views expressed herein.

DeepTrack disclaims any obligation to update the information herein or to disclose the results of any revisions that may be made to any projected results or forward-looking statements herein to reflect events or circumstances after the date of such information, projected results or statements or to reflect the occurrence of anticipated or unanticipated events.

CERTAIN INFORMATION CONCERNING THE PARTICIPANTS

Deep Track and the other Participants (as defined below) have filed a definitive proxy statement and accompanying WHITE universal proxy card with the Securities and Exchange Commission (the “SEC”) to be used to solicit proxies for, among other matters, the election of its slate of director nominees at the 2025 annual stockholders meeting (the “2025 Annual Meeting”) of Dynavax Technologies Corporation, a Delaware corporation (“DVAX”). Shortly after filing its definitive proxy statement with the SEC, Deep Track furnished the definitive proxy statement and accompanying WHITE universal proxy card to some or all of the stockholders entitled to vote at the 2025 Annual Meeting.

The participants in the proxy solicitation are DeepTrack, Deep Track Biotechnology Master Fund, Ltd. (the “Record Stockholder”), David Kroin (all of the foregoing persons, collectively, the “Deep Track Parties”), Brett A. Erkman, Jeffrey S. Farrow, Michael Mullette and Donald J.Santel (such individuals, collectively with the Deep Track Parties, the “Participants”). As of the date hereof, the Deep Track Parties beneficially own an aggregate of 17,791,486 shares (the “Deep Track Shares”) of the common stock, par value $0.001 per share, of DVAX (the “Common Stock”). The Deep Track Shares collectively represent approximately 14.53% of the outstanding shares of Common Stock based on 122,411,685 shares of Common Stock outstanding as of the record date for the 2025 Annual Meeting, as reported in DVAX’s Definitive Proxy Statement filed with the SEC on April 17, 2025. Each of the Deep Track Parties may be deemed to have the shared power to vote or direct the vote of (and the shared power to dispose or direct the disposition of) all of the Deep Track Shares. As of the date hereof, none of the other Participants beneficially own any shares of Common Stock.

IMPORTANT INFORMATION AND WHERE TO FIND IT

DEEP TRACK STRONGLY ADVISES ALL STOCKHOLDERS OF DVAX TO READ THE DEFINITIVE PROXY STATEMENT, ANY AMENDMENTS OR SUPPLEMENTS TO SUCH PROXY STATEMENT, AND OTHER PROXY MATERIALS FILED BY DEEP TRACK WITH THE SEC BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. SUCH PROXY MATERIALS WILL BE AVAILABLE AT NO CHARGE ON THE SEC’S WEBSITE AT WWW.SEC.GOV. THE DEFINITIVE PROXY STATEMENT, WHEN FILED, AND OTHER RELEVANT DOCUMENTS, WILL ALSO BE AVAILABLE BY DIRECTING A REQUEST TO THE PARTICIPANTS’ PROXY SOLICITOR, INNISFREE M&A INCORPORATED, 501 MADISON AVENUE, 20th FLOOR, NEW YORK, NY 10022 (STOCKHOLDERS CAN CALL TOLL-FREE: (877)-687-1865).

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