One Stop Systems, Inc. (OSS)
Nasdaq: OSS · Electronic Computers · Escondido, CA · filing with the SEC since 2007
Who owns One Stop Systems, Inc.
As filed with the SECHolders of 5% or more
2
Blackrock, Inc. holds 7.4% of Common Stock, as its SCHEDULE 13G filed Jul 29, 2026 says.
Directors and officers
7
report now, of 22 people on the record since 2018. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Blackrock, Inc.
SCHEDULE 13G · filed Jul 29, 2026 · Common Stock
Jane Street Group, LLC
SCHEDULE 13G · filed May 13, 2026 · Common Stock, par value $0.0001 per share
Manko Joseph M. Jr.
SCHEDULE 13D/A · filed Jun 6, 2025 · Common Stock, Par Value $0.0001 Per Share · reported falling below 5%, from 5.6% in Apr 18, 2025
Lynrock Lake LP
SCHEDULE 13G/A · filed Feb 17, 2026 · Common Stock, par value $0.0001 per share · reported falling below 5%, from 6.6% in Nov 18, 2025
Bard Associates Inc
SCHEDULE 13G/A · filed Feb 13, 2026 · Common Stock · reported falling below 5%
Galkin Vladimir
SCHEDULE 13G/A · filed Oct 9, 2026 · Common Stock, par value $0.0001 per share · reported falling below 5%, from 6.1% in Jul 31, 2026
Barclays PLC
SCHEDULE 13G/A · filed May 13, 2025 · COMMON-STOCK · reported falling below 5%, from 5.15% in Mar 21, 2025
What OSS reports owning in othersstakes of 5% or more, and other ties
One Stop Systems, Inc. reports no stake in another company in the record.
Insider tradesForm 4
3sales
0purchases
0sales on a scheduled plan
3people selling
$400,000sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window3 of 24 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Bassett David George | director | 1 | $100,000 | 0 | 0 | $0 |
| Herbets Mitchell H | director | 1 | $100,000 | 0 | 0 | $0 |
| Matz Gregory W | director | 1 | $100,000 | 0 | 0 | $0 |