Power of Attorney Filing

This filing details a Power of Attorney granted by Douglas J. Williamson, a director of Vistagen Therapeutics, Inc., to Nick B. Tressler and Shawn K. Singh. The attorneys-in-fact are authorized to act on Mr. Williamson's behalf regarding SEC filings, including preparing, executing, and submitting forms such as 3, 4, 5, 13D, 13G, and 144. They are also empowered to manage Mr. Williamson's EDGAR account, obtain information on company securities transactions, and handle related administrative tasks. This power of attorney remains in effect until Mr. Williamson is no longer required to file these specific forms or until it is revoked in writing. The document clarifies that while the attorneys-in-fact are authorized to act, Mr. Williamson retains ultimate responsibility for compliance with Section 13 and 16 of the Exchange Act.