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

Feb 24, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ONE STOP SYSTEMS, INC. (OSS)
CIK: 0001394056
Period of Report: 2021-02-22

Reporting Person: Reardon James M (President, CDI)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-02-22	Common Stock	M	833	—	Acquired	1119532	Direct
2021-02-22	Common Stock	F	220	$6.17	Disposed	1119312	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-02-22	Restricted Stock Unit	$	M	833	Disposed		Common Stock (833)	Direct

Footnotes

F1: Restricted stock units convert into common stock on a one-for-one basis.

F2: The reporting person received 833 shares of common stock upon vesting of the Restricted Stock Units, as reported in this Form 4. The reporting person forfeited 220 shares of common stock underlying the vested and outstanding Restricted Stock Units to cover tax withholdings, using the market price of the issuer's common stock at the time of forfeiture.

F3: Prior to the Initial Vesting Date, the Vested Ratio shall be zero. On the Initial Vesting Date, the Vested Ratio shall be 1/6, provided the Grantee's service has not been terminated prior to the Initial Vesting Date. For each six month period of Grantee service from the Initial Vesting Date until the Vested Ratio equals 1/1, the Vested Ratio shall be increased by 1/6. This Restricted Stock Unit will be fully vested after three (3) years of service. The Initial Vesting Date shall be six months following the Date of Restricted Stock Unit Grant.