X0306 4 2018-11-16 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 Common Stock 2018-11-16 4 A 0 27641 0.00 A 27641 D Reported shares are represented by restricted stock units ("RSUs"), and each RSU is the economic equivalent of one share of Ra Medical Systems, Inc. common stock. 1/3 of the total number of shares underlying the RSUs granted will vest on November 20, 2019, and 1/6th of the total number of shares underlying the RSUs will vest on each May 20 and November 20 thereafter, such that the Award will be fully vested on November 20, 2021; provided, however, that if a vesting date would otherwise fall on a day when the national stock exchange upon which the shares are listed is not open for trading, vesting will occur on the first trading day thereafter. Vesting in all instances is subject to the Reporting Person's continuous status as a Service Provider (as defined in the 2018 Equity Incentive Plan) through each vesting date. /s/ Daniel Horwood 2018-11-19