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CIK 0001394056 · Non-accelerated filer<br>Smaller reporting company

ONE STOP SYSTEMS, INC.

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Ticker
OSS
Exchange
Nasdaq
Industry
Electronic Computers
FY end
Dec 31
Entity type
operating
EIN
330885351
Phone
760-745-9883
Business address
2235 ENTERPRISE ST STE 110, ESCONDIDO, CA, 92029
Former names
ONE STOP SYSTEMS INC
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$0
in 0 filings

Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Reading 86 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-02-07 Ison James CPO Gift −8,213 141,077
2026-02-07 Ison James CPO Gift +8,213 226,885
2026-02-07 Gabel Daniel G. Chief Financial Officer Grant or award +55,239 163,308
2026-02-07 KNOWLES MICHAEL Chief Executive Officer Grant or award +101,862 668,006
2025-12-31 Gabel Daniel G. Chief Financial Officer Shares withheld for taxes −3,215 $7.18 $23K 108,069
2025-12-31 KNOWLES MICHAEL Chief Executive Officer Shares withheld for taxes −19,075 $7.18 $137K 566,144
2025-08-20 KNOWLES MICHAEL Chief Executive Officer Shares withheld for taxes −8,359 $5.26 $44K 585,219
2025-08-20 Ison James CPO Shares withheld for taxes −3,113 $5.26 $16K 125,794
2025-08-20 Ison James CPO Gift −4,271 121,523
2025-08-20 Ison James CPO Gift +4,271 218,672
2025-06-05 KNOWLES MICHAEL Chief Executive Officer Shares withheld for taxes −19,075 $3.06 $58K 593,578
2025-05-21 BASSETT DAVID GEORGE Director Grant or award +21,000 21,000
2025-05-21 KNOWLES MICHAEL Chief Executive Officer Grant or award +0 591,653
2025-05-21 KNOWLES MICHAEL Chief Executive Officer Grant or award +21,000 612,653
2025-05-21 Herbets Mitchell H Director Grant or award +21,000 42,000
2025-05-21 Dumont Michael J. Director Shares withheld for taxes +21,000 21,000
2025-05-21 Matz Gregory W Director Grant or award +21,000 74,930
2025-02-20 KNOWLES MICHAEL Chief Executive Officer Shares withheld for taxes −16,800 $3.76 $63K 591,653
2025-02-20 Ison James CPO Shares withheld for taxes −7,006 $3.76 $26K 136,667
2025-02-20 Ison James CPO Gift −7,760 128,907

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