One Stop Systems, Inc.
One Stop Systems, Inc. (OSS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · OSS · as of Mar 31, 2025
Ownership Breakdown
37
Institutional Holders
▼ 4 vs Q4
$12.35M
Total Inst. Value
▼ $5.33M vs Q4
24.77M
Shares Outstanding
freeFloat 86.83%
5.32M
13F Shares Held
▲ 47,033 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
OSS largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
LYNROCK LAKE LP electronic computers | 2.07M | 9.66% | 9.66% | $4.79B | May 15, 2025 | — held |
BARD ASSOCIATES INC electronic computers | 1.03M | 4.82% | 4.82% | $2.39B | May 12, 2025 | ▼ 14.9K |
VANGUARD GROUP INC electronic computers | 734.2K | 3.43% | 3.43% | $1.70B | May 9, 2025 | ▲ 35.1K |
PACIFIC RIDGE CAPITAL PARTNERS, LLC electronic computers | 461.1K | 2.16% | 2.16% | $1.07B | May 9, 2025 | ▼ 22.4K |
GEODE CAPITAL MANAGEMENT, LLC electronic computers | 197.9K | 92.54% | 92.54% | $459.24M | May 13, 2025 | ▲ 7.7K |
ARCHON CAPITAL MANAGEMENT LLC electronic computers | 153.1K | 71.59% | 71.59% | $355.19M | May 14, 2025 | NEW |
BLACKROCK, INC. electronic computers | 94.6K | 44.24% | 44.24% | $219.46M | May 2, 2025 | ▲ 127 |
RENAISSANCE TECHNOLOGIES LLC electronic computers | 92.9K | 43.42% | 43.42% | $215.44M | May 14, 2025 | ▲ 23.0K |
ESSEX INVESTMENT MANAGEMENT CO LLC electronic computers | 73.6K | 34.44% | 34.44% | $170.85M | May 7, 2025 | ▼ 152 |
STATE STREET CORP electronic computers | 65.9K | 30.81% | 30.81% | $152.83M | May 15, 2025 | ▲ 8.1K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
18
Increased
+119.3K shares5
New Positions
first time holders8
Decreased
−120.9K shares9
Sold Out
fully exitedNet shares change (top 50)
1.6K
+119.3K / −120.9K
Net new holders
+6
5 new / 9 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
OSS insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
4
Buy transactions
4
Sell transactions
1.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Gabel Daniel G. Chief Financial Officer | May 11, 2026 | Tax Withhold | 1,613 | $15.68 | $25.3K | 153.9K | Form 4 ↗ |
BASSETT DAVID GEORGE director | May 20, 2026 | Award | 11,984 | — | — | 33.0K | Form 4 ↗ |
BASSETT DAVID GEORGE director | May 26, 2026 | Sale | 8,000 | $17.64 | $141.1K | 25.0K | Form 4 ↗ |
BASSETT DAVID GEORGE director | May 21, 2025 | Award | 21,000 | — | — | 21.0K | Form 4 ↗ |
Matz Gregory W director | May 20, 2026 | Award | 11,984 | — | — | 86.9K | Form 4 ↗ |
Matz Gregory W director | May 26, 2026 | Sale | 8,000 | $17.52 | $140.2K | 78.9K | Form 4 ↗ |
Dumont Michael J. director | May 20, 2026 | Award | 11,984 | — | — | 119.8K | Form 4 ↗ |
Herbets Mitchell H director | May 20, 2026 | Award | 11,984 | — | — | 54.0K | Form 4 ↗ |
Herbets Mitchell H director | May 26, 2026 | Sale | 5,000 | $17.62 | $88.1K | 49.0K | Form 4 ↗ |
KNOWLES MICHAEL Chief Executive Officer | May 21, 2025 | Award | 0 | — | — | 591.7K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
One Stop Systems, Inc. (OSS) is primarily owned by institutional investors, who hold approximately 21.5% of total shares outstanding. Company insiders own approximately 13.17%, while retail and public investors account for the remaining 65.34%.
The largest institutional shareholder of One Stop Systems, Inc. is LYNROCK LAKE LP, holding approximately 2.07 million shares — equal to 9.66% of outstanding shares — as of March 31, 2025.
A total of 37 institutional investors currently hold OSS stock, with a combined institutional value of approximately $12,346,060 as of the most recent 13F filing period.
Frequently asked questions
OSS ownershipOne Stop Systems, Inc. (OSS) is primarily owned by institutional investors, who hold approximately 21.5% of shares. The largest shareholder is LYNROCK LAKE LP with a 9.66% stake. Company insiders hold 13.17%. Data sourced from SEC Form 13F as of March 31, 2025.