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ONE STOP SYSTEMS, INC.

OSS Net selling
CIK 0001394056 #3645 in the set updated 21 Sep 2026
Bought (120 mo)
$355.53K
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$6.49M
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$6.49M
63 of 63 sales
Net
−$6.13M
−$6.13M against sales at will

By person

21 insiders · 127 transactions
21.2×

Mike Knowles holds 21.2 times base salary in stock. $10.40M of shares against $490.33K in salary for 2025.

Salary from the company's own proxy. The shares are what Mike Knowles last reported holding, valued at $17.62, the price Common Stock was last bought or sold at on the open market here, on 26 May 2026.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Cooper Steve D
10% owner
$26.06K (1)
$4.49M (33)
−$4.47M
10,884,896
$191.79M
−8.8%
Reardon James M
VP of Sales
$1.05M (12)
−$1.05M
1,019,312
$17.96M
+1,489%
POTASHNER KENNETH F
Director
$283.77K (2)
−$283.77K
398,601
$7.02M
+785.8%
Ison James
CPO
$175.43K (4)
−$175.43K
427,695
$7.54M
+221.4%
Manko Joseph M. Jr.
Director
$146.75K (2)
+$146.75K
1,195,899
$21.07M
+8.7%
BASSETT DAVID GEORGE
Director
$141.12K (1)
−$141.12K
24,984
$440.22K
RAUN DAVID
Director
$139.83K (24)
+$139.83K
583,556
$10.28M
+269.4%
Matz Gregory W
Director
$10.13K (2)
$140.16K (1)
−$130.04K
81,414
$1.43M
+3,157%
REARDON JOHN RALPH
Director
$114.59K (9)
−$114.59K
392,965
$6.92M
+2.4%
Herbets Mitchell H
Director
$88.10K (1)
−$88.10K
48,984
$863.10K
Lowman Teresita M.
Director
$11.82K (1)
+$11.82K
29,930
$527.37K
Harrison Jack
Director
$11.35K (1)
+$11.35K
92,435
$1.63M
+342.2%
Messinger Gioia
Director
$7.56K (2)
+$7.56K
49,690
$875.54K
KNOWLES MICHAEL
Chief Executive Officer
$2.03K (1)
+$2.03K
590,141
$10.40M
JONES RANDY G
Director
1,271,249
$22.40M
+0.6%
Morrison John W Jr.
Chief Financial Officer
305,381
$5.38M
Bressner Josef
Managing Director, Bressner
216,260
$3.81M
+103.1%
Carpenter William
Director
199,236
$3.51M
+11.7%
Gabel Daniel G.
Chief Financial Officer
150,064
$2.64M
Dumont Michael J.
Director
119,833
$2.11M
+82.0%
Sentovich Kimberly C.
Director
39,266
$691.87K

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Insider
Date
Role
Action
Shares
Price
Amount
Manko Joseph M. Jr.
14 Aug 2024
Director
Buy indirect
25,000
$1.99
$49.75K
Manko Joseph M. Jr.
13 Aug 2024
Director
Buy indirect
50,000
$1.94
$97.00K
KNOWLES MICHAEL
16 Aug 2023
Chief Executive Officer
Buy
1,130
$1.80
$2.03K
Matz Gregory W
15 Aug 2023
Director
Buy
2,500
$1.77
$4.43K
RAUN DAVID
14 Aug 2023
Director
Buy
5,000
$1.97
$9.85K
RAUN DAVID
22 Nov 2021
President and CEO
Buy
2,000
$5.00
$10.00K
RAUN DAVID
18 Aug 2021
President and CEO
Buy
2,000
$5.45
$10.90K
Messinger Gioia
29 Jun 2021
Director
Buy
1,000
$5.66
$5.66K
RAUN DAVID
31 Mar 2021
President and CEO
Buy
2,000
$6.07
$12.14K
Lowman Teresita M.
30 Mar 2021
Director
Buy
2,000
$5.91
$11.82K
Messinger Gioia
24 Nov 2020
Director
Buy
760
$2.50
$1.90K
RAUN DAVID
18 Nov 2020
President and CEO
Buy
2,500
$2.22
$5.55K
RAUN DAVID
18 Nov 2020
President and CEO
Buy
2,500
$2.24
$5.60K
RAUN DAVID
18 Aug 2020
President and CEO
Buy
2,500
$2.28
$5.70K
RAUN DAVID
18 Aug 2020
President and CEO
Buy
2,500
$2.30
$5.75K
Matz Gregory W
14 Aug 2020
Director
Buy indirect
2,500
$2.28
$5.70K
Harrison Jack
14 Aug 2020
Director
Buy indirect
5,000
$2.27
$11.35K
RAUN DAVID
25 Jun 2020
President and CEO
Buy
2,500
$2.05
$5.12K
RAUN DAVID
25 Jun 2020
President and CEO
Buy
2,500
$2.02
$5.05K
RAUN DAVID
16 Dec 2019
Director
Buy
289
$1.73
$499.97
RAUN DAVID
16 Dec 2019
Director
Buy
1,711
$1.72
$2.94K
RAUN DAVID
16 Dec 2019
Director
Buy
300
$1.71
$513.00
RAUN DAVID
12 Dec 2019
Director
Buy
1,000
$1.70
$1.70K
RAUN DAVID
10 Dec 2019
Director
Buy
100
$1.77
$177.11
RAUN DAVID
10 Dec 2019
Director
Buy
2,400
$1.78
$4.27K
RAUN DAVID
6 Dec 2019
Director
Buy
2,500
$1.75
$4.38K
RAUN DAVID
3 Dec 2019
Director
Buy
3,610
$1.80
$6.50K
RAUN DAVID
27 Nov 2019
Director
Buy
1,000
$1.86
$1.86K
Cooper Steve D
7 Jun 2019
President, CEO
Buy indirect
15,000
$1.74
$26.06K
RAUN DAVID
27 Mar 2019
Director
Buy
2,500
$2.00
$5.00K
RAUN DAVID
27 Mar 2019
Director
Buy
5,000
$2.05
$10.25K
RAUN DAVID
28 Dec 2018
Director
Buy
2,500
$2.05
$5.13K
RAUN DAVID
27 Dec 2018
Director
Buy
5,000
$2.11
$10.53K
RAUN DAVID
21 Dec 2018
Director
Buy
5,000
$2.09
$10.43K

What was left out

Form 4 filings counted 284
Amendments (4/A) skipped 2
Filings about a different issuer 0
Unreadable filings 0
Joint filings 12
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 63
Transactions with no price 0
Shares from compensation/vesting 5,974,820
Sales filed before the plan box existed 57
History held since 9 Feb 2018