X0306 4 2019-04-11 0 0001716621 Ra Medical Systems, Inc. RMED 0001746687 Irwin Dean C/O RA MEDICAL SYSTEMS, INC. 2070 LAS PALMAS DRIVE CARLSBAD CA 92011 1 1 1 0 See Remarks 0001748379 Dean Irwin & Melissa Burstein, as Trustees U/T/A June 12, 2017 C/O RA MEDICAL SYSTEMS, INC. 2070 LAS PALMAS DRIVE CARLSBAD CA 92011 0 0 1 0 Common Stock 2019-04-11 4 S 0 13152 3.49 D 234948 D Common Stock 2019-04-11 4 S 0 7776 3.49 D 141084 I By Spouse Common Stock 2803852 I See Footnote Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale is mandated by the Reporting Person's award agreement to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person. Shares held of record by Dean Irwin & Melissa Burstein, as Trustees U/T/A June 12, 2017, of which Dean Irwin serves as co-trustee. CEO, Co-President, CTO, and Chairman of Board /s/ Andrew Jackson, as Attorney-in-Fact, on behalf of Dean Irwin and Dean Irwin & Melissa Burstein, as Trustees U/T/A June 12, 2017 2019-04-15