SEC Form 4 · accession 0001193125-26-383260
ONE STOP SYSTEMS, INC. · OSS
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Michael Knowles
Officer — Chief Executive Officer · Director
Period of report
Aug 7, 2026
Accepted (ET)
Sep 4, 2026 · 12:33 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001394056
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1,F2 | Aug 7, 2026 | F | 8,621 | $13.32 | D | 598,762 | D | |
| Common StockF3,F4 | Aug 15, 2026 | F | 8,621 | $13.61 | D | 590,141 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1The Reporting Person forfeited 8,621 shares of common stock upon conversion of an aggregate 21,908 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 February 7, 2025.
- F2Includes 311,403 unvested restricted stock units held by the Reporting Person, all of which remain subject to certain vesting conditions.
- F3The Reporting Person forfeited 8,621 shares of common stock upon conversion of an aggregate 21,908 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 July 1, 2024.
- F4Includes 289,495 unvested restricted stock units held by the Reporting Person, all of which remain subject to certain vesting conditions.