Leading Independent Proxy Advisory Firms ISS and Glass Lewis Recommend Acer Therapeutics Shareholders Vote "FOR" the Proposed Merger and Related Proposals - Seite 2

ACER SHAREHOLDERS – PLEASE VOTE TODAY!

If the merger is not approved on November 8, ACER will begin trading on OTC Pink Market starting on November 9 because of the failure by the Company to regain compliance, during the previously granted 180 calendar day grace period, with Nasdaq’s requirement of having at least $35 million in market value of listed securities, resulting in the trading suspension of ACER on Nasdaq.

If the merger is not subsequently consummated, Acer will not be able to fund its business operations and will likely be forced to terminate operations, liquidate or file for bankruptcy.

If you are an Acer shareholder and you have questions or require assistance in submitting your proxy or voting your shares, please contact Acer’s proxy solicitor:

ADVANTAGE PROXY, INC.
Toll Free: 1-877-870-8565
Collect: 1-206-870-8565
Email: [e-mail]

Additional Information about the Proposed Merger between Acer and Zevra, the Special Meeting and Where to Find It
In connection with the proposed merger, Zevra has filed a registration statement on Form S-4 with the Securities and Exchange Commission (the "SEC"), including a proxy statement / prospectus. The registration statement was declared effective on October 10, 2023. Additionally, Acer’s proxy statement was filed on October 10, 2023. Acer shareholders are urged to read these materials because they contain important information about Acer, Zevra and the proposed merger. The proxy statement / prospectus and other relevant materials, and any other documents filed by Zevra and Acer with the SEC, may be obtained free of charge at the SEC website at www.sec.gov. In addition, Acer shareholders will be able to attend the Acer special meeting via the Internet at https://www.cstproxy.com/acertx/sm2023 and view the Acer 2023 Special Meeting Proxy Statement and the Zevra Therapeutics, Inc. Forms 10-K, 10-Qs and 8-Ks. Acer shareholders are urged to read the proxy statement / prospectus and the other relevant materials before making any voting or investment decision with respect to the proposed merger.

No Offer or Solicitation
This communication is for informational purposes only and not intended to and does not constitute an offer to subscribe for, buy or sell, the solicitation of an offer to subscribe for, buy or sell or an invitation to subscribe for, buy or sell any securities or the solicitation of any vote or approval in any jurisdiction pursuant to or in connection with the proposed transaction or otherwise, nor shall there be any sale, issuance or transfer of securities in any jurisdiction in contravention of applicable law. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended (the “Securities Act”), and otherwise in accordance with applicable law.