ONE STOP SYSTEMS, INC. — Director's Dealing 2021

May 21, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ONE STOP SYSTEMS, INC. (OSS)
CIK: 0001394056
Period of Report: 2021-05-19

Reporting Person: Ison James (Chief Sales/Marketing Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-19	Common Stock	A	55000	$0.00	Acquired	55000	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	31769	Indirect

Footnotes

F1: Represents 55,000 restricted stock units awarded to the Reporting Person under the Issuer's 2017 Equity Incentive Plan, as amended (the "Plan"), in connection with the Reporting Person's service as an executive officer of the Issuer, certain of which restricted stock units are subject to vesting conditions.

F2: These shares are owned directly by the James J. Ison Jr. & Sha-Marie A Ison TR UA 06 04 2020 James J. Ison Jr. & Sha-Marie A Ison Inter Vivos Revocable Trust, with Jim Ison as trustee of the trust.