0001757499 2026-09-09 2026-09-09 true 0001757499 8-K/A 2026-09-09 SHUTTLE PHARMACEUTICALS HOLDINGS, INC. DE 001-41488 82-5089826 401 Professional Drive Suite 260 Gaithersburg MD 20879 (240) 430-4212 false false false false Common Stock $0.00001 per share SHPH NASDAQ true false On September 15, 2026, Shuttle Pharmaceuticals Holdings, Inc. (the “Company”) filed a Current Report on Form 8-K (the “Form 8-K”) under Item 3.02 disclosing, among other things, that the Company issued pre-funded warrants (the “Pre-Funded Warrants”) to purchase an aggregate of approximately 16,932,508 shares of Common Stock, which number actually represents the maximum number of Pre-Funded Warrants that may be issued upon the satisfaction of all conditions to issuance, and not the number of Pre-Funded Warrants that were issued as of September 9, 2026. The Company hereby amends the Form 8-K to reflect that, as of September 9, 2026, the actual number of Pre-Funded Warrants that have been issued is 9,741,751.This Current Report on Form 8-K/A amends the Form 8-K solely to amend Item 3.02 as described above. There are no other modifications or updates to any of the information made in the Form 8-K.