OraSure Technologies, Inc.
OraSure Technologies, Inc. (OSUR) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · OSUR · as of Sep 30, 2025
Ownership Breakdown
146
Institutional Holders
▼ 9 vs Q2
$201.94M
Total Inst. Value
▲ $6.34M vs Q2
68.85M
Shares Outstanding
freeFloat 93.67%
62.92M
13F Shares Held
▼ 2.28M vs Q2
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
OSUR largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. surgical & medical instruments & apparatus | 6.71M | 9.00% | 9.00% | $21.54B | Nov 12, 2025 | ▲ 140.7K |
PRIVATE MANAGEMENT GROUP INC surgical & medical instruments & apparatus | 5.42M | 7.27% | 7.27% | $17.39B | Nov 13, 2025 | ▼ 44.2K |
NEUBERGER BERMAN GROUP LLC surgical & medical instruments & apparatus | 4.20M | 5.64% | 5.64% | $13.49B | Nov 12, 2025 | ▲ 46.9K |
VANGUARD GROUP INC surgical & medical instruments & apparatus | 4.13M | 5.55% | 5.55% | $13.27B | Nov 7, 2025 | ▼ 118.3K |
ALTAI CAPITAL MANAGEMENT, L.P. surgical & medical instruments & apparatus | 3.75M | 5.03% | 5.03% | $12.03B | Nov 14, 2025 | ▲ 1.59M |
DIMENSIONAL FUND ADVISORS LP surgical & medical instruments & apparatus | 3.64M | 4.88% | 4.88% | $11.67B | Nov 12, 2025 | ▼ 200.8K |
SYSTEMATIC FINANCIAL MANAGEMENT LP surgical & medical instruments & apparatus | 2.52M | 3.38% | 3.38% | $8.10B | Nov 13, 2025 | ▲ 293.4K |
RENAISSANCE TECHNOLOGIES LLC surgical & medical instruments & apparatus | 2.26M | 3.03% | 3.03% | $7.26B | Nov 13, 2025 | ▼ 15.2K |
ACADIAN ASSET MANAGEMENT LLC surgical & medical instruments & apparatus | 2.12M | 2.85% | 2.85% | $6.82B | Nov 13, 2025 | ▼ 67.1K |
MILLENNIUM MANAGEMENT LLC surgical & medical instruments & apparatus | 2.11M | 2.83% | 2.83% | $6.78B | Nov 14, 2025 | ▲ 878.2K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
20
Increased
+4.43M shares1
New Positions
first time holders24
Decreased
−5.24M shares0
Sold Out
fully exitedNet shares change (top 50)
806.1K
+4.43M / −5.24M
Net new holders
-3
1 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
OSUR insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
10
Buy transactions
3
Sell transactions
3.33
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 |
|---|---|---|---|---|---|---|---|
McMahon Robert W. director | Jun 3, 2026 | Award | 46,106 | — | — | 123.1K | Form 4 ↗ |
Gagliano Nancy J director | Jun 3, 2026 | Award | 46,106 | — | — | 185.1K | Form 4 ↗ |
Marmora Lelio director | Jun 3, 2026 | Award | 46,106 | — | — | 148.5K | Form 4 ↗ |
Kenny John P. director | Jun 3, 2026 | Award | 46,106 | — | — | 209.7K | Form 4 ↗ |
Bertrand John D. director | Jun 3, 2026 | Award | 46,106 | — | — | 79.8K | Form 4 ↗ |
Boyd Steven Kyle director | Jun 3, 2026 | Award | 46,106 | — | — | 159.6K | Form 4 ↗ |
Boyd Steven Kyle director | May 14, 2026 | Purchase | 25,000 | $2.99 | $74.8K | 113.5K | Form 4 ↗ |
Boyd Steven Kyle director | May 13, 2026 | Purchase | 25,000 | $3.02 | $75.5K | 88.5K | Form 4 ↗ |
Boyd Steven Kyle director | May 12, 2026 | Purchase | 25,000 | $2.98 | $74.5K | 63.5K | Form 4 ↗ |
Bertrand John D. director | May 12, 2026 | Award | 33,661 | — | — | 33.7K | 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
OraSure Technologies, Inc. (OSUR) is primarily owned by institutional investors, who hold approximately 91.4% of total shares outstanding. Company insiders own approximately 6.33%, while retail and public investors account for the remaining 2.28%.
The largest institutional shareholder of OraSure Technologies, Inc. is BLACKROCK, INC., holding approximately 6.71 million shares — equal to 9.00% of outstanding shares — as of September 30, 2025.
A total of 146 institutional investors currently hold OSUR stock, with a combined institutional value of approximately $201,939,822 as of the most recent 13F filing period.
Frequently asked questions
OSUR ownershipOraSure Technologies, Inc. (OSUR) is primarily owned by institutional investors, who hold approximately 91.4% of shares. The largest shareholder is BLACKROCK, INC. with a 9.00% stake. Company insiders hold 6.33%. Data sourced from SEC Form 13F as of September 30, 2025.