Neogen Corporation
Neogen Corporation (NEOG) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · NEOG · as of Sep 30, 2025
Ownership Breakdown
306
Institutional Holders
▼ 18 vs Q2
$1.36B
Total Inst. Value
▲ $210.90M vs Q2
217.67M
Shares Outstanding
freeFloat 99.37%
238.81M
13F Shares Held
▼ 1.79M 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
NEOG largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. in vitro & in vivo diagnostic substances | 32.02M | 14.75% | 14.75% | $182.81B | Nov 12, 2025 | ▲ 1.42M |
VANGUARD GROUP INC in vitro & in vivo diagnostic substances | 23.96M | 11.04% | 11.04% | $136.83B | Nov 7, 2025 | ▲ 385.9K |
ING GROEP NV in vitro & in vivo diagnostic substances | 14.06M | 6.48% | 6.48% | $80.29B | Nov 6, 2025 | NEW |
CLARKSTON CAPITAL PARTNERS, LLC in vitro & in vivo diagnostic substances | 11.69M | 5.39% | 5.39% | $66.77B | Nov 13, 2025 | ▼ 2.31M |
GATES CAPITAL MANAGEMENT, INC. in vitro & in vivo diagnostic substances | 10.90M | 5.02% | 5.02% | $62.24B | Nov 14, 2025 | ▼ 1.89M |
STATE STREET CORP in vitro & in vivo diagnostic substances | 8.75M | 4.03% | 4.03% | $49.97B | Nov 14, 2025 | ▲ 158.2K |
DIMENSIONAL FUND ADVISORS LP in vitro & in vivo diagnostic substances | 8.03M | 3.70% | 3.70% | $45.83B | Nov 12, 2025 | ▼ 1.11M |
MACKENZIE FINANCIAL CORP in vitro & in vivo diagnostic substances | 7.82M | 3.60% | 3.60% | $44.65B | Nov 13, 2025 | ▲ 6.3K |
BAMCO INC /NY/ in vitro & in vivo diagnostic substances | 6.85M | 3.16% | 3.16% | $39.13B | Nov 14, 2025 | ▲ 684 |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC in vitro & in vivo diagnostic substances | 5.91M | 2.72% | 2.72% | $33.73B | Nov 12, 2025 | ▼ 3.50M |
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
29
Increased
+18.56M shares5
New Positions
first time holders16
Decreased
−23.43M shares0
Sold Out
fully exitedNet shares change (top 50)
4.87M
+18.56M / −23.43M
Net new holders
+18
5 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
NEOG 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.
4
Buy transactions
5
Sell transactions
0.80
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 |
|---|---|---|---|---|---|---|---|
Moylan John Patrick Chief Accounting Officer | Jun 3, 2026 | Tax Withhold | 2,553 | $8.75 | $22.3K | 23.6K | Form 4 ↗ |
Rocklin Amy M Former Chief Legal Officer | May 18, 2026 | Tax Withhold | 10,241 | $9.29 | $95.1K | 82.2K | Form 4 ↗ |
Moylan John Patrick Chief Accounting Officer | May 4, 2026 | Tax Withhold | 1,568 | $9.53 | $14.9K | 17.3K | Form 4 ↗ |
Stacey Jennifer Evans Chief Legal Officer | May 1, 2026 | Award | 89,520 | $9.53 | $853.1K | 89.5K | Form 4 ↗ |
Stacey Jennifer Evans Chief Legal Officer | May 1, 2026 | Award | 39,349 | $9.53 | $375.0K | 39.3K | Form 4 ↗ |
Nassif Mikheal CEO | Feb 17, 2026 | Purchase | 23 | $10.94 | $251.62 | 704 | Form 4 ↗ |
Nassif Mikheal CEO | Feb 2, 2026 | Purchase | 24 | $10.00 | $239.993 | 681 | Form 4 ↗ |
Nassif Mikheal CEO | Jan 26, 2026 | Purchase | 25 | $9.86 | $246.375 | 657 | Form 4 ↗ |
Ranalli Tamara A. Senior Vice President | Jan 7, 2026 | Award | 261,210 | $7.38 | $1.93M | 261.2K | Form 4 ↗ |
Ranalli Tamara A. Senior Vice President | Jan 7, 2026 | Award | 130,605 | $7.38 | $963.9K | 130.6K | 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
Neogen Corporation (NEOG) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 0.63%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Neogen Corporation is BLACKROCK, INC., holding approximately 32.02 million shares — equal to 14.75% of outstanding shares — as of September 30, 2025.
A total of 306 institutional investors currently hold NEOG stock, with a combined institutional value of approximately $1.36 billion as of the most recent 13F filing period.
Frequently asked questions
NEOG ownershipNeogen Corporation (NEOG) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is BLACKROCK, INC. with a 14.75% stake. Company insiders hold 0.63%. Data sourced from SEC Form 13F as of September 30, 2025.