Pasithea Therapeutics (KTTA) - Prospectus(update)

As filed with the Securities and Exchange Commission on November 26, 2025 Registration No. 333-291611 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 PASITHEA THERAPEUTICS CORP. (Exact name of registrant as specified in its charter) | Delaware | 001-40804 | 85-1591963 | | --- | --- | --- | | (State or other jurisdiction of | (Primary Standard Industrial | (I.R.S. Employer | | incorporation or organiza ...