X0306 4 2021-10-01 0001662382 BRAIN SCIENTIFIC INC. BRSF 0001890341 kotob Hassan C/O BRAIN SCIENTIFIC INC. 125 WILBUR PLACE, SUITE 170 BOHEMIA NY 11716 true true true Chief Executive Officer Common Stock 2021-10-01 4 A 0 7407934 A 7407934 I By Hassan Kotob Revocable Trust Stock Option (right to buy) 0.35 2021-10-01 4 A 0 2502341 A 2021-10-01 2031-10-01 Common Stock 2502341 2502341 D Stock Option (right to buy) 0.39 2021-10-21 4 A 0 1218248 0 A 2031-10-21 Common Stock 1218248 1218248 D In connection with the closing of the transactions contemplated by the Agreement and Plan of Merger and Reorganization, dated as of June 11, 2021, by and among the Issuer, Piezo Motion Corp., a Delaware corporation ("Piezo"), and BRSF Acquisition Inc., a Delaware corporation and a wholly-owned subsidiary of the Issuer ("Merger Sub"), pursuant to which Merger Sub merged with and into Piezo (the "Merger"), with Piezo surviving as a wholly-owned subsidiary of the Issuer, these shares of common stock were received in exchange for 2,524,044 shares of common stock of Piezo. Received in connection with the Merger as part of the Merger consideration. The shares underlying this option vest as to 25% on 4/21/2022, with the remainder vesting in 18 equal monthly installments thereafter, beginning on 5/21/2022 and ending on 10/21/2023. /s/ Hassan Kotob 2021-10-27