One Stop Systems, Inc. (OSS) Insider Ownership

Historic Ownership Trends

There are no significant Insider Shareholders in One Stop Systems as of January 01, 2026.

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Steve D Cooper 1,923,572 24 Jan, 2024
Joseph M. Jr. Manko 1,195,899 03 Jul, 2024
James M Reardon Vp Of Sales 1,019,312 31 Mar, 2021
Michael Knowles Chief Executive Officer 477,530 30 Dec, 2024
David Raun 425,597 03 Apr, 2024
Kenneth F Potashner 398,601 11 Jul, 2024
James Ison Cpo 340,195 22 Aug, 2025
John W Jr. Morrison Chief Financial Officer 305,381 25 Sep, 2024
Daniel G. Gabel Chief Financial Officer 111,284 05 Mar, 2025
Gregory W Matz 74,930 23 May, 2025
Jack Harrison 71,984 21 Mar, 2022
Gioia Messinger 49,690 03 Jul, 2024
Mitchell H Herbets 42,000 27 May, 2025
Kimberly C. Sentovich 39,266 21 Mar, 2022
Teresita M. Lowman 29,930 21 Mar, 2022
Michael J. Dumont 21,000 23 May, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
20 Aug, 2025 James Ison Common Stock D 3,113 $5.26 125,794 D F
20 Aug, 2025 James Ison Common Stock D 4,271 $0.00 121,523 D G
20 Aug, 2025 James Ison Common Stock A 4,271 $0.00 218,672 I G
21 May, 2025 Mitchell H Herbets - - 42,000 D
21 May, 2025 Michael J. Dumont Common Stock A 21,000 $0.00 21,000 D F
21 May, 2025 Gregory W Matz Common Stock A 21,000 $0.00 74,930 D A
21 May, 2025 Mitchell H Herbets Common Stock A 21,000 $0.00 42,000 D A
20 Feb, 2025 James Ison Common Stock D 7,006 $3.76 136,667 D F
20 Feb, 2025 James Ison - - 128,907 D
20 Feb, 2025 James Ison Common Stock D 7,760 $0.00 128,907 D G
20 Feb, 2025 James Ison Common A 7,760 $0.00 214,401 I G
20 Feb, 2025 James Ison - - 214,401 I
07 Feb, 2025 James Ison Common Stock A 44,279 $4.06 135,913 D A
07 Feb, 2025 Daniel G. Gabel Common Stock A 71,284 $4.06 111,284 D A
07 Feb, 2025 Daniel G. Gabel - - 111,284 D
05 Dec, 2020 Michael Knowles Common Stock D 17,525 $2.41 477,530 D F
11 Nov, 2024 Daniel G. Gabel Common Stock A 40,000 $0.00 40,000 D A
23 Sep, 2024 James Ison Common Stock D 4,440 $2.19 99,861 D F
23 Sep, 2024 John W Jr. Morrison Common Stock D 5,961 $2.19 305,381 D F
23 Sep, 2024 James Ison Common Stock D 8,227 $0.00 91,634 D G