ONE STOP SYSTEMS, INC. — Director's Dealing 2022

May 25, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ONE STOP SYSTEMS, INC. (OSS)
CIK: 0001394056
Period of Report: 2022-05-23

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-05-23	Common Stock	F	2189	$4.30	Disposed	88811	Direct
2022-05-23	Common Stock	G	2811	$0.00	Disposed	86000	Direct
2022-05-23	Common Stock	G	2811	$0.00	Acquired	77524	Indirect

Footnotes

F1: The Reporting Person forfeited 2,189 shares of common stock upon conversion of 5,000 vested and outstanding restricted stock units into shares of common stock to cover tax withholdings, using the market price of the Issuer's common stock at the time of forfeiture. These restricted stock units were part of the grant reported in Table I of the Form 4 filed by the Reporting Person with the Securities and Exchange Commission on May 21, 2021.

F2: Includes 86,000 unvested restricted stock units held by the Reporting Person, all of which remain subject to certain vesting conditions.

F3: On May 17, 2022, the Reporting Person transferred 2,811 shares of common stock to 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 (the "Trust"), of which the Reporting Person is trustee. The Reporting Person and members of his immediate family are the sole beneficiaries of the Trust.

F4: These shares are owned directly by the Trust, and indirectly by James Ison as trustee of the Trust.