X0306 4/A 2021-12-10 2021-12-15 0001662382 BRAIN SCIENTIFIC INC. BRSF 0001890341 Kotob Hassan C/O BRAIN SCIENTIFIC INC. 6700 PROFESSIONAL PARKWAY LAKEWOOD RANCH FL 34240 true true true Chief Executive Officer Stock Option (right to buy) 0.39 2021-12-10 4 D 0 1218248 D 2031-10-21 Common Stock 1218248 0 D Stock Option (right to buy) 0.21 2021-12-10 4 A 0 1218248 A 2031-10-21 Common Stock 1218248 1218248 D The reporting person agreed to an amendment to an outstanding option granted to him on October 21, 2021, which resulted in the deemed disposition of the old option in exchange for a new option having a lower exercise price. 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. The shares underlying this option vest in four equal quarterly installments beginning on 3/31/2022 and ending on 12/31/2022. This amended Form 4 is being filed to add the amendment to the outstanding option as described herein. /s/ Hassan Kotob 2022-02-18