X0306 4 2019-12-03 0 0001716621 Ra Medical Systems, Inc. RMED 0001756566 Horwood Daniel C/O RA MEDICAL SYSTEMS, INC. 2070 LAS PALMAS DR. CARLSBAD CA 92011 0 1 0 0 General Counsel Stock Option (Right to Buy) 1.22 2019-12-03 4 A 0 139052 0.00 A 2029-12-03 Common Stock 139052 139052 D 1/12 of the total shares subject to the option shall vest every month after December 3, 2019, such that all shares subject to the option shall be fully vested on December 3, 2020, subject to the Reporting Person continuing to be a "Service Provider" (as defined in the Company's 2018 Equity Incentive Plan) through each vesting date. /s/ Daniel Horwood 2019-12-05