James Ison - 20 Aug 2025 Form 4 Insider Report for ONE STOP SYSTEMS, INC. (OSS)

Role
CPO
Signature
/s/ James Ison
Issuer symbol
OSS
Transactions as of
20 Aug 2025
Net transactions value
-$16,374
Form type
4
Filing time
25 Aug 2025, 19:32:11 UTC
Previous filing
13 Mar 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Ison James CPO 2235 ENTERPRISE STREET #110, ESCONDIDO /s/ James Ison 22 Aug 2025 0001729652

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction OSS Common Stock Tax liability $16,374 -3,113 -2.4% $5.26 125,794 20 Aug 2025 Direct F1, F2
transaction OSS Common Stock Gift $0 -4,271 -3.4% $0.000000 121,523 20 Aug 2025 Direct F2, F3
transaction OSS Common Stock Gift $0 +4,271 +2% $0.000000 218,672 20 Aug 2025 By Trust F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The Reporting Person forfeited 3,113 shares of common stock upon conversion of 7,384 vested and outstanding restricted stock units into shares of common stock to cover tax withholdings, using the market price of the Issuer's common stock at the time of forfeiture. These restricted stock units were part of the grant reported in Table I of the Form 4 filed by the Reporting Person with the Securities and Exchange Commission on March 20, 2023.
F2 Includes 113,763 unvested restricted stock units held by the Reporting Person, all of which remain subject to certain vesting conditions.
F3 On August 20, 2025 the Reporting Person transferred 4,271 shares of common stock to the James J. Ison Jr. & Sha-Marie A Ison TR UA 06 04 2020 James J. Ison Jr. & Shah-Marie A Ison Inter Vivos Revocable Trust (the "Trust"), of which the Reporting Person is trustee. The Reporting Person and members of his immediate family are the sole beneficiaries of the Trust.
F4 These shares are owned directly by the Trust, and indirectly by James Ison as trustee of the Trust.