🕵️ One STOP Systems, Inc. ($OSS)
SEC insider & ownership activity, last 12 months · CIK 1394056 · every row links its SEC filing
Over the last 12 months insiders sold $369K with no open-market buying against it. Bassett David George sold $141K in discretionary trades (May). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 3 sellers, $369K (3 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Bassett David George | 0 | – | 1 | $141K | May 26, 2026 |
| Gregory W. Matz | 0 | – | 1 | $140K | May 26, 2026 |
| Mitchell Herbets | 0 | – | 1 | $88K | May 26, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 7.4% | 13G | Jul 29, 2026 | filing ↗ | |
| Cynthia Paul | 6.6% | 13G | Nov 18, 2025 | filing ↗ | |
| Galkin Vladimir | 6.1% | 13G | Jul 31, 2026 | filing ↗ | |
| Galkin Angelica | 6.1% | 13G | Jul 31, 2026 | filing ↗ | |
| JANE Street Group, LLC | 5.6% | 13G | May 13, 2026 | filing ↗ | |
| Angelica Galkin Revocable Trust, Dated April 21, 2018 | 5.2% | 13G | Jul 31, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Gregory W. Matz | $138K | May 26, 2026 | filing ↗ |
| Mitchell Herbets | $88K | May 26, 2026 | filing ↗ |
| Bassett David George | $143K | May 26, 2026 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Jul 31, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 31, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 31, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 13, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 13, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 7, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 15, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 6, 2026 | filing ↗ |
| Acquisition or disposition (2.01) | Jan 6, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 6, 2026 | filing ↗ |
| Material agreement (1.01) | Oct 1, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 1, 2025 | filing ↗ |