Business Description

NOTE 1 – NATURE OF THE ORGANIZATION AND BUSINESS Pasithea Therapeutics Corp. (“Pasithea” or the “Company”) was incorporated in the State of Delaware on May 12, 2020 and completed an initial public offering (the “Initial Public Offering”) on September 17, 2021. The Company is a clinical-stage biotechnology company focused on the discovery, research and development of innovative treatments for RASopathies, MAPK pathway-driven tumors, and other diseases, including central nervous system (CNS) disorders. The Company’s primary operations (the “Therapeutics” segment) are focused on developing the Company’s lead product candidate, PAS-004, a next-generation macrocyclic mitogen-activated protein kinase, or MEK inhibitor that the Company believes may address the limitations and liabilities associated with existing drugs targeting a similar mechanism of action. In December 2023, the U.S. Food and Drug Administration (the “FDA”) cleared the Company’s Investigational New Drug application (the “IND”) for PAS-004 and the Company received a study may proceed letter from the FDA for its Phase 1 multicenter, open-label, dose escalation trial of PAS-004 in patients with MAPK pathway-driven advanced tumors with a documented RAS, NF1 or RAF mutation or patients who have failed BRAF/MEK inhibition (the “FIH Phase 1 Advanced Cancer Study”). The Company is currently conducting the FIH Phase 1 Advanced Cancer Study at four clinical sites in the United States and three additional sites in Eastern Europe. The Company has completed the initial eight cohorts through 45 mg capsule and has not reached the maximum tolerated dose. The Company plans to file a protocol amendment to continue dose escalation in the FIH Phase 1 Advanced Cancer Study using its tablet formulation of PAS-004 in an effort to continue exploring the safety, PK, and early signals of efficacy at higher dose levels of PAS-004. Simultaneously, a pilot food effect assessment is planned in a subset of patients who agree to participate in this optional component of the study. As such, the Company expects to complete the trial in 2028. In May 2025, the Company initiated its Phase 1/1b multicenter, open-label, dose escalation trial of PAS-004 in adult patients with neurofibromatosis type 1 (“NF1”) with symptomatic and inoperable, incompletely resected, or recurrent plexiform neurofibromas (“PN”). The Company is currently conducting the trial at a total of five sites in the United States, Australia, and South Korea. The initial indication the Company plans to seek FDA marketing approval for PAS-004 is the treatment of symptomatic PNs in both adult and pediatric patients with NF1. As such, the Company aims to conduct a Phase 1 trial for pediatric NF1-PN patients and ultimately complete registrational clinical trials in both adult and pediatric NF1-PN populations. Additionally, the Company has one program, PAS-001, in the discovery stage, which the Company believes addresses limitations in the treatment paradigm for schizophrenia. During the year ended December 31, 2023, the Company through its subsidiaries discontinued providing business support services to anti-depression clinics (the “Clinics” segment) in the U.K. and in the United States, previously conducted through partnerships with healthcare providers. During the year ended December 31, 2023, the at home services in New York, NY as well as in the U.K were discontinued and the Company sold and disposed of the assets associated with the Clinics operations in Los Angeles, CA. The lease associated with the related property in Los Angeles was assumed by the buyer in the transaction. Throughout this report, the terms “our,” “we,” “us,” and the “Company” refer to Pasithea Therapeutics Corp. and its subsidiaries, Pasithea Therapeutics Limited (U.K.), Pasithea Therapeutics Portugal, Sociedade Unipessoal Lda, Pasithea Clinics Inc., Alpha-5 Integrin, LLC (“Alpha-5”), AlloMek Therapeutics, LLC (“AlloMek”) and Pasithea MacroMEK Pty Ltd. Pasithea Therapeutics Limited (U.K.), legally dissolved as of January 2, 2024, was a private limited company, registered in the United Kingdom (U.K.). Pasithea Therapeutics Portugal, Sociedade Unipessoal Lda is a private limited company registered in Portugal. Pasithea Clinics Inc., legally dissolved as of September 3, 2025, was incorporated in Delaware. Alpha-5 and AlloMek are both Delaware limited liability companies. Pasithea MacroMEK Pty Ltd is registered in Australia.…