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One Stop Systems, Inc. (NASDAQ:OSS)
US · Delayed Price · Currency is USD
Technology · Computer Hardware
6.03+0.12 (+1.95%)
Market cap
$150M
Health Score
Analyst consensus
Listed since
Feb 1, 2018
Website
Insider Score
––Not scored
OSS Insider Score
Insiders here have filed 3 Form 4s in the last 90 days, but all of them are share awards, grants or other non-market transactions. Those are compensation, not a decision to buy, so they are not scored.
OSS Stock Insider Trading Activity
OSS stock’s insider trading shows 3 sales on the open market for an estimated $369.38K by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| KNOWLES MICHAEL CEO | Tax withheld | 8,621 | $13.61 | $117.33K | 1.4% | 590,141 | Aug 15, 2026 | — | Form 4 |
| KNOWLES MICHAEL CEO | Tax withheld | 8,621 | $13.32 | $114.83K | 1.4% | 598,762 | Aug 7, 2026 | — | Form 4 |
| Gabel Daniel G. CFO | Tax withheld | 3,832 | $13.32 | $51.04K | 2.5% | 150,064 | Aug 7, 2026 | — | Form 4 |
| KNOWLES MICHAEL CEO | Tax withheld | 19,675 | $16.89 | $332.31K | 3.1% | 607,383 | Jun 5, 2026 | — | Form 4 |
| Herbets Mitchell H Director | Sell | 5,000 | $17.62 | $88.10K | 9.3% | 48,984 | May 26, 2026 | — | Form 4 |
| Matz Gregory W Director | Sell | 8,000 | $17.52 | $140.16K | 9.2% | 78,914 | May 26, 2026 | — | Form 4 |
| BASSETT DAVID GEORGE Director | Sell | 8,000 | $17.64 | $141.12K | 24.3% | 24,984 | May 26, 2026 | — | Form 4 |
| Herbets Mitchell H Director | Award | 11,984 | — | — | 28.5% | 53,984 | May 20, 2026 | — | Form 4 |
| BASSETT DAVID GEORGE Director | Award | 11,984 | — | — | 57.1% | 32,984 | May 20, 2026 | — | Form 4 |
| Matz Gregory W Director | Award | 11,984 | — | — | 16.0% | 86,914 | May 20, 2026 | — | Form 4 |
| Dumont Michael J. Director | Award | 11,984 | — | — | 11.1% | 119,833 | May 20, 2026 | — | Form 4 |
| Gabel Daniel G. CFO | Tax withheld | 1,613 | $15.68 | $25.29K | 1.0% | 153,896 | May 11, 2026 | — | Form 4 |
| Ison James Other | Gift | 4,263 | — | — | 2.9% | 141,907 | Feb 15, 2026 | — | Form 4 |
| KNOWLES MICHAEL CEO | Tax withheld | 6,650 | $8.70 | $57.85K | 1.0% | 648,058 | Feb 15, 2026 | — | Form 4 |
| Ison James Other | Tax withheld | 3,120 | $8.70 | $27.14K | 2.1% | 146,170 | Feb 15, 2026 | — | Form 4 |
| Ison James Other | Gift | 4,263 | — | — | 1.9% | 231,148 | Feb 15, 2026 | — | Form 4 |
| Gabel Daniel G. CFO | Tax withheld | 7,799 | $9.24 | $72.06K | 4.8% | 155,509 | Feb 7, 2026 | — | Form 4 |
| Ison James Other | Award | 34,313 | — | — | 28.2% | 155,836 | Feb 7, 2026 | — | Form 4 |
| KNOWLES MICHAEL CEO | Award | 101,862 | — | — | 18.0% | 668,006 | Feb 7, 2026 | — | Form 4 |
| KNOWLES MICHAEL CEO | Tax withheld | 13,298 | $9.24 | $122.87K | 2.0% | 654,708 | Feb 7, 2026 | — | Form 4 |
| Gabel Daniel G. CFO | Award | 55,239 | — | — | 51.1% | 163,308 | Feb 7, 2026 | — | Form 4 |
| Ison James Other | Tax withheld | 6,546 | $9.24 | $60.49K | 4.2% | 149,290 | Feb 7, 2026 | — | Form 4 |
| Ison James Other | Gift | 8,213 | — | — | 5.5% | 141,077 | Feb 7, 2026 | — | Form 4 |
| Ison James Other | Gift | 8,213 | — | — | 3.8% | 226,885 | Feb 7, 2026 | — | Form 4 |
| Gabel Daniel G. CFO | Tax withheld | 3,215 | $7.18 | $23.08K | 2.9% | 108,069 | Dec 31, 2025 | — | Form 4 |
| KNOWLES MICHAEL CEO | Tax withheld | 19,075 | $7.18 | $136.96K | 3.3% | 566,144 | Dec 31, 2025 | — | Form 4 |
| BASSETT DAVID GEORGE Director | Award | 21,000 | — | — | New | 21,000 | May 21, 2025 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
- Gift (G) — Bona fide gift
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.