James Ison - Apr 11, 2021 Form 4 Insider Report for ONE STOP SYSTEMS, INC. (OSS)

Role: Chief Sales/Marketing Officer
Signature: /s/ James Ison
Stock symbol: OSS
Transactions as of: Apr 11, 2021
Transactions value $: -$1,465
Form type: 4
Date filed: 5/18/2021, 06:35 PM
Next filing: May 21, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OSS	Common Stock	Options Exercise		+603	+1.92%		32K	Apr 11, 2021	By Trust	F1, F2
transaction	OSS	Common Stock	Tax liability	-$1.46K	-234	-0.73%	$6.26	31.8K	Apr 11, 2021	By Trust	F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	OSS	Restricted Stock Unit	Options Exercise	$0	-603	-19.46%	$0.00	2.5K	Apr 11, 2021	Commons Stock	603		Direct	F1, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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 603 shares of common stock upon vesting of the Restricted Stock Units, as reported in this Form 4. The reporting person forfeited 234 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.
F4	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.