OSS
insider transactionsONE STOP SYSTEMS, INC. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 90d
-21.0K
0 buy · 21.0K sell
Net value · 90d
-$369.4K
$0 in · $369.4K out
Sentiment · 90d
Net selling
0% buying · 100% selling
Open-market trades · 90d
3
0 buy · 21.0K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Other·F
Michael Knowles KEY
Chief Executive Officer
$332.3K
19.7K sh · $16.89
Own -3%
-
Sell·S
Director
$140.2K
8.0K sh · $17.52
Own -9%
-
Sell·S
Director
$88.1K
5.0K sh · $17.62
Own -9%
-
Sell·S
Director
$141.1K
8.0K sh · $17.64
Own -24%
-
Grant·A
Director
$0
12.0K sh
Own +16%
-
Grant·A
Director
$0
12.0K sh
Own +29%
-
Grant·A
Director
$0
12.0K sh
Own +11%
-
Grant·A
Director
$0
12.0K sh
Own +57%
-
Other·F
Daniel G. Gabel KEY
Chief Financial Officer
$25.3K
1.6K sh · $15.68
Own -1%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 5, 2026 | Michael Knowles KEY | Other F | 19.7K | $332.3K |
| May 26, 2026 | Gregory W Matz | Sell S | 8.0K | $140.2K |
| May 26, 2026 | Mitchell H Herbets | Sell S | 5.0K | $88.1K |
| May 26, 2026 | David George Bassett | Sell S | 8.0K | $141.1K |
| May 20, 2026 | Gregory W Matz | Grant A | 12.0K | $0 |
| May 20, 2026 | Mitchell H Herbets | Grant A | 12.0K | $0 |
| May 20, 2026 | Michael J. Dumont | Grant A | 12.0K | $0 |
| May 20, 2026 | David George Bassett | Grant A | 12.0K | $0 |
| May 11, 2026 | Daniel G. Gabel KEY | Other F | 1.6K | $25.3K |
About OSS insider trading
This page tracks insider transactions for ONE STOP SYSTEMS, INC. (OSS) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.