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ONE STOP SYSTEMS, INC.

OSS Net selling

CIK 0001394056 #3645 in the set updated 21 Sep 2026

Bought (12 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (12 mo)

$369.38K

$0.00 on a plan · $0.00 straight out of an exercise

Sold at will

$369.38K

3 of 3 sales

Net

−$369.38K

−$369.38K against sales at will

By person

8 insiders · 3 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

Of company

Worth

Change

BASSETT DAVID GEORGE

Director

—

$141.12K (1)

−$141.12K

24,984

0.1002%

$440.22K

—

Matz Gregory W

Director

—

$140.16K (1)

−$140.16K

78,914

0.3164%

$1.39M

+46.3%

Herbets Mitchell H

Director

—

$88.10K (1)

−$88.10K

48,984

0.1964%

$863.10K

+133.3%

KNOWLES MICHAEL

Chief Executive Officer

—

590,141

2.37%

$10.40M

+29.4%

Ison James

CPO

—

373,055

1.50%

$6.57M

+17.1%

Morrison John W Jr.

Chief Financial Officer

—

305,381

1.22%

$5.38M

−1.9%

Gabel Daniel G.

Chief Financial Officer

—

150,064

0.6017%

$2.64M

—

Dumont Michael J.

Director

—

119,833

0.4805%

$2.11M

+38.0%

Individual transactions

Insider

Date

Role

Action

Price

Amount

Herbets Mitchell H

26 May 2026

Director

Sell

5,000

$17.62

$88.10K

Matz Gregory W

26 May 2026

Director

Sell

8,000

$17.52

$140.16K

BASSETT DAVID GEORGE

26 May 2026

Director

Sell

8,000

$17.64

$141.12K

What was left out

Form 4 filings counted 15

Amendments (4/A) skipped 1

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 0

Sales at will 3

Transactions with no price 0

Shares from compensation/vesting 366,367

History held since 9 Feb 2018