UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 Form 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File Number: 001-37761 VISTAGEN THERAPEUTICS, INC. (Exact name of registrant as specified in its charter) Nevada 20-5093315 (State or other ...