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

Aug 16, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ONE STOP SYSTEMS, INC. (OSS)
CIK: 0001394056
Period of Report: 2021-08-10

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-08-10	Common Stock	M	2500	—	Acquired	38233	Indirect
2021-08-10	Common Stock	F	805	$6.37	Disposed	37428	Indirect
2021-08-12	Common Stock	M	1666	—	Acquired	39094	Indirect
2021-08-12	Common Stock	F	454	$5.85	Disposed	38640	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-08-10	Restricted Stock Unit	$	M	2500	Disposed		Common Stock (2500)	Direct
2021-08-12	Restricted Stock Unit	$	M	1666	Disposed		Common Stock (1666)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	48334	Direct

Footnotes

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

F2: These shares are owned directly by James J Ison Jr. and Sha-Marie A Ison Inter Vivos Revocable Trust dated June 4, 2020, and indirectly by James Ison as trustee of the trust.

F3: The reporting person received 2,500 shares of common stock upon vesting of the Restricted Stock Units, as reported in this Form 4. The reporting person forfeited 805 shares of common stock underlying the vested and outstanding Restricted Stock Units to cover tax withholdings, using the market price of OSS common stock at the time of forfeiture

F4: The reporting person received 1,666 shares of common stock upon vesting of the Restricted Stock Units, as reported in this Form 4. The reporting person forfeited 454 shares of common stock underlying the vested and outstanding Restricted Stock Units to cover tax withholdings, using the market price of OSS common stock at the time of forfeiture.

F5: 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.