X0508 4 2023-08-31 0001537561 Arch Therapeutics, Inc. ARTH 0001886766 Hicks Laurence C/O ARCH THERAPEUTICS, INC. 235 WALNUT STREET SUITE 6 FRAMINGHAM MA 01702 1 0 Common Stock 2023-08-31 4 P 0 10292 0.275 A 10292 I Drake Partners Warrants (right to buy) 1 2023-08-31 4 A 0 20584 A 2028-08-31 Common Stock 20584 20584 I Drake Partners The Reporting Person is an owner of Drake Partners. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose. The warrants are exercisable after the earlier of (A) the six-month anniversary after the date of issuance and (B) the date that a registration statement registering the shares underlying the warrants is declared effective. The warrants were sold as part of a unit with the shares of common stock reported in Table I, at a price of $0.275 per share of common stock and accompanying warrant to purchase two shares of common stock. /s/ Laurence Hicks 2023-09-08