David Raun - Jan 4, 2023 Form 4 Insider Report for ONE STOP SYSTEMS, INC. (OSS)

Role: President and CEO, Director
Signature: /s/ David Raun
Stock symbol: OSS
Transactions as of: Jan 4, 2023
Transactions value $: -$83,874
Form type: 4
Date filed: 1/6/2023, 04:37 PM
Previous filing: Jun 30, 2022
Next filing: Jun 21, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OSS	Common Stock	Options Exercise		+68.7K	+15.95%		499K	Jan 4, 2023	Direct	F1, F2
transaction	OSS	Common Stock	Tax liability	-$83.9K	-28.6K	-5.73%	$2.93	471K	Jan 4, 2023	Direct	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 Units	Options Exercise	$0	-68.7K	-50%	$0.00	68.7K	Jan 4, 2023	Common Stock	68.7K		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 shares of common stock on a one-for-one basis.
F2	Includes 201,000 unvested restricted stock units held by the Reporting Person, which remain subject to certain vesting conditions.
F3	The Reporting Person received 68,687 shares of common stock upon vesting of the restricted stock units, as reported in this Form 4. The Reporting Person forfeited 28,626 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	The restricted stock units ("RSUs") shall vest over three years, with 1/3 of the RSUs vesting following the one-year anniversary of the date of grant, and the remaining RSUs shall vest in four equal installments, commencing six months after the one-year anniversary of the date of grant and every six months thereafter until fully vested, provided that grantee is still employed on each such vesting date.