X0206 3 2013-06-26 0 0001537561 Arch Therapeutics, Inc. ARTH 0001388872 ROSENTHAL ARTHUR L C/O ARCH THERAPEUTICS, INC. ONE BROADWAY, 14TH FLOOR CAMBRIDGE MA 02142 1 0 0 0 Common Stock 58400 D Stock Options (Right to Buy) 0.37 2023-06-18 Common Stock 500000 D 25% of the shares subject to the option vest on July 1, 2013, 25% of the shares subject to the option vest 12 months after July 1, 2013, and 1/24th of the remaining unvested shares vest monthly thereafter, with all shares underlying the option subject to automatic acceleration of vesting upon a corporate transaction or change in control (as such terms are defined under the Issuer's 2013 Stock Incentive Plan). To the extent vested, the reporting person must exercise the stock option during the 2017 calendar year, unless the Issuer undergoes a corporate transaction or change in control or the reporting person separates from service from the Issuer in a calendar year earlier than 2017, in which case the option must be exercised during such earlier calendar year. /s/ Arthur L. Rosenthal 2013-06-26