David Raun - Jun 23, 2023 Form 4 Insider Report for ONE STOP SYSTEMS, INC. (OSS)

Role: Director
Signature: /s/ David Raun
Stock symbol: OSS
Transactions as of: Jun 23, 2023
Transactions value $: -$8,605
Form type: 4
Date filed: 6/27/2023, 08:18 PM
Previous filing: Jun 21, 2023
Next filing: Aug 15, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	OSS	Common Stock	Options Exercise		+7.43K	+1.85%		410K	Jun 23, 2023	Direct	F1
transaction	OSS	Common Stock	Tax liability	-$8.61K	-2.92K	-0.71%	$2.95	407K	Jun 23, 2023	Direct	F2

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	-7.43K	-100%	$0.00^*	0	Jun 23, 2023	Common Stock	7.43K		Direct	F1, F3

* 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	The Reporting Person received 7,434 shares of common stock upon vesting of the restricted stock units, as reported in this Form 4. The Reporting Person forfeited 2,917 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	The restricted stock units ("RSUs") were scheduled to 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 vesting 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. In connection with the termination of the Reporting Person's employment as President and CEO of the Issuer, vesting of 7,434 RSUs was accelerated and the remaining RSUs were automatically forfeited as of the date of such termination.