Quick Takeaways
- NEOG - NEOGEN CORP has 23 insiders with reported activity on this page.
- Net insider value flow over the last year: +$774,972.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 23 Insiders of NEOGEN CORP
- Symbol
- NEOG on Nasdaq
- Location
- Lansing, MI
What Changed
- Buy value: $774,972; sell value: $0.
- Net share flow: +152,842.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$774,972.
Buys
$774,972
Shares: 152,842
Insiders: 10
Sells
$0
Shares: 0
Insiders: 0
Net
+$774,972
Shares: +152,842
Insiders: 10
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 209 | 0 | $2,017 | $0 | +$2,017 |
| 3-6 | 177 | 0 | $1,106 | $0 | +$1,106 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 152,456 | 0 | $771,849 | $0 | +$771,849 |
NEOGEN CORP executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Amy M. Rocklin | Chief Legal Officer | $6,407,527 | +$62,375 | +0.98% | Mixed | 27 Oct 2025 |
| Jason Warren Lilly | Vice President | $4,392,686 | Mixed | 26 Oct 2023 | ||
| John Edward Adent | Former CEO | $2,487,389 | Mixed | 27 Oct 2025 | ||
| Richard Bryan Riggsbee | Cfo | $1,124,997 | Mixed | 03 Nov 2025 | ||
| David H. Naemura | Former CFO | $1,042,137 | Mixed | 01 Dec 2025 | ||
| Darci L. Vetter | Director | $878,108 | Mixed | 06 Oct 2022 | ||
| James C. Borel | Director | $876,549 | +$320,990 | +58% | Mixed | 27 Oct 2025 |
| Douglas Edward Jones | Former COO | $720,422 | Mixed | 27 Oct 2025 | ||
| Boehm William T. | Director | $559,994 | +$26,175 | +4.9% | Mixed | 27 Oct 2025 |
| James P. Tobin | Director | $548,479 | +$47,268 | +9.4% | Mixed | 27 Oct 2025 |
| Steven J. Quinlan | Vp & Cfo | $525,352 | Mixed | 11 Oct 2022 | ||
| Jeffrey D. Capello | Director | $481,349 | +$100,217 | +26% | Mixed | 27 Oct 2025 |
| Aashima Gupta | Director | $452,182 | +$99,987 | +28% | Mixed | 27 Oct 2025 |
| Thierry Bernard | Director | $438,779 | Mixed | 23 Oct 2025 | ||
| John Patrick Moylan | Chief Accounting Officer | $414,383 | Mixed | 18 Aug 2025 | ||
| Rafael A. Rodriguez | Director | $409,043 | +$34,306 | +9.2% | Mixed | 27 Oct 2025 |
| Catherine E. Woteki | Director | $398,496 | +$29,831 | +8.1% | Mixed | 27 Oct 2025 |
| Ronald D. Green | Director | $395,630 | Mixed | 27 Oct 2025 | ||
| Tamara A. Ranalli | Senior Vice President | $374,999 | Mixed | 07 Jan 2026 | ||
| Avi Pelossof | Director | $119,999 | Mixed | 24 Oct 2025 | ||
| Andrea F. Wainer | Director | $119,997 | Mixed | 23 Oct 2025 | ||
| Jerome L. Hagedorn | Vice President, NA Operations | $41,277 | Mixed | 25 Apr 2023 | ||
| Mikheal Nassif | CEO, Director | $7,701 | +$3,123 | +68% | Filing P/S | 17 Feb 2026 |
Top shareholders of NEOGEN CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
14%
from 13D/G
|
32,509,026
|
$227,238,092 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
11%
|
23,801,905
|
$166,375,316 | — | 31 Dec 2025 | |
| Clarkston Capital Partners, LLC |
13F
13D/G
|
Company |
5.4%
from 13D/G
|
11,328,670
|
$79,187,403 | — | 31 Dec 2025 | |
| ING GROEP NV |
13F
13D/G
|
Company |
4%
from 13D/G
|
8,777,500
|
$61,354,725 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
4.1%
|
8,724,861
|
$60,986,778 | — | 31 Dec 2025 | |
| Gates Capital Management, Inc. |
13F
13D/G
|
Company · Gates Capital Management, L.P. |
3.9%
from 13D/G
|
8,385,534
|
$58,614,883 | — | 31 Dec 2025 | |
| T. Rowe Price Investment Management, Inc. |
13F
|
Company |
3.8%
|
8,181,768
|
$57,191,000 | — | 31 Dec 2025 | |
| MACKENZIE FINANCIAL CORP |
13F
|
Company |
3.7%
|
7,898,439
|
$55,574,445 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
3.4%
|
7,398,254
|
$51,714,231 | — | 31 Dec 2025 | |
| BAILLIE GIFFORD & CO |
13D/G
|
— |
4.5%
|
9,749,003
|
$49,037,485 | -$7,435,426 | 31 Dec 2024 | |
| CIBC WORLD MARKETS CORP |
13F
|
Company |
3.2%
|
6,864,470
|
$47,982,645 | — | 31 Dec 2025 | |
| Select Equity Group, L.P. |
13D/G
|
— |
4.3%
|
9,396,150
|
$47,262,634 | $0 | 31 Dec 2024 | |
| Hudson Bay Capital Management LP |
13F
|
Company |
3%
|
6,500,000
|
$45,435,000 | — | 31 Dec 2025 | |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13D/G
|
— |
4.3%
|
9,403,020
|
$44,946,436 | $0 | 30 Jun 2025 | |
| NORGES BANK |
13D/G
13F
|
Company |
4.2%
|
9,076,830
|
$43,387,247 | -$27,394,825 | 30 Jun 2025 | |
| BAMCO INC /NY/ |
13F
|
Company |
2.6%
|
5,509,659
|
$38,512,516 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.5%
|
5,428,084
|
$37,948,654 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
2.5%
|
5,410,809
|
$37,821,556 | — | 31 Dec 2025 | |
| BANK OF MONTREAL /CAN/ |
13F
|
Company |
2.1%
|
4,597,095
|
$32,133,694 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
2.1%
|
4,496,331
|
$31,429,365 | — | 31 Dec 2025 | |
| MIZUHO MARKETS AMERICAS LLC |
13F
|
Company |
1.6%
|
3,500,000
|
$24,465,000 | — | 31 Dec 2025 | |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND |
13F
|
Company |
1.6%
|
3,490,800
|
$24,400,692 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.3%
|
2,895,918
|
$20,242,465 | — | 31 Dec 2025 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
1.3%
|
2,720,765
|
$19,018,148 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1.1%
|
2,291,367
|
$16,016,657 | — | 31 Dec 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
1%
|
2,204,605
|
$15,410,189 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.93%
|
1,995,348
|
$13,947,483 | — | 31 Dec 2025 | |
| GLENMEDE TRUST CO NA |
13F
|
Company |
0.92%
|
1,973,709
|
$13,796,224 | — | 31 Dec 2025 | |
| SHAPIRO CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.85%
|
1,827,110
|
$12,771,499 | — | 31 Dec 2025 | |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
0.83%
|
1,777,812
|
$12,426,906 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.76%
|
1,642,171
|
$11,478,776 | — | 31 Dec 2025 | |
| SG Americas Securities, LLC |
13F
|
Company |
0.75%
|
1,617,597
|
$11,307,000 | — | 31 Dec 2025 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.72%
|
1,547,553
|
$10,817,395 | — | 31 Dec 2025 | |
| KENNEDY CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.66%
|
1,419,727
|
$9,923,892 | — | 31 Dec 2025 | |
| AMERICAN CAPITAL MANAGEMENT INC |
13F
|
Company |
0.65%
|
1,397,898
|
$9,771,307 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.61%
|
1,303,441
|
$9,111,050 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.6%
|
1,294,278
|
$9,047,007 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
0.57%
|
1,223,318
|
$8,550,992 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
0.56%
|
1,210,415
|
$8,460,801 | — | 31 Dec 2025 | |
| Neuberger Berman Group LLC |
13F
|
Company |
0.56%
|
1,197,649
|
$8,374,984 | — | 31 Dec 2025 | |
| ArrowMark Colorado Holdings LLC |
13F
|
Company |
0.52%
|
1,116,609
|
$7,805,097 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.51%
|
1,098,333
|
$7,677,348 | — | 31 Dec 2025 | |
| KING LUTHER CAPITAL MANAGEMENT CORP |
13F
|
Company |
0.51%
|
1,087,778
|
$7,603,568 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.48%
|
1,040,426
|
$7,272,578 | — | 31 Dec 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.48%
|
1,035,767
|
$7,240,011 | — | 31 Dec 2025 | |
| HEARTLAND ADVISORS INC |
13F
|
Company |
0.47%
|
1,000,000
|
$6,990,000 | — | 31 Dec 2025 | |
| NATIONAL BANK OF CANADA /FI/ |
13F
|
Company |
0.47%
|
1,000,000
|
$6,990,000 | — | 31 Dec 2025 | |
| Amy M. Rocklin |
3/4/5
|
Chief Legal Officer |
—
mixed-class rows
|
374,394
mixed-class rows
|
$6,407,527 | +$62,375 | 27 Oct 2025 | |
| NOMURA HOLDINGS INC |
13F
|
Company |
0.39%
|
846,774
|
$5,918,950 | — | 31 Dec 2025 | |
| FRED ALGER MANAGEMENT, LLC |
13F
|
Company |
0.39%
|
836,681
|
$5,848,400 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for NEOGEN CORP
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Mikheal Nassif | NEOG | Common Stock | Purchase | 3.38% | $252 | $10.94 | 23 | 704 | 17 Feb 2026 | By son |
| Mikheal Nassif | NEOG | Common Stock | Purchase | 3.65% | $240 | $10.00 | 24 | 681 | 02 Feb 2026 | By son |
| Mikheal Nassif | NEOG | Common Stock | Purchase | 3.96% | $246 | $9.86 | 25 | 657 | 26 Jan 2026 | By son |
| Mikheal Nassif | NEOG | Common Shares | Purchase | 27.7% | $1,279 | $9.33 | 137 | 632 | 16 Jan 2026 | By son |
| Tamara A. Ranalli | NEOG | Common Stock | Award | 101,626 | 50,813 | 07 Jan 2026 | Direct | |||
| Tamara A. Ranalli | NEOG | Common Stock (Right to Buy) | Award | 261,210 | 261,210 | 07 Jan 2026 | Direct | |||
| David H. Naemura | NEOG | Common Stock | Tax liability | -3.78% | -3,548 | 90,388 | 01 Dec 2025 | Direct | ||
| David H. Naemura | NEOG | Common Stock | Options Exercise | 15.9% | 12,912 | 93,936 | 01 Dec 2025 | Direct | ||
| David H. Naemura | NEOG | Restricted Stock Units | Options Exercise | -100% | -12,912 | 0 | 01 Dec 2025 | Direct | ||
| Mikheal Nassif | NEOG | Common Shares | Purchase | 55.7% | $1,106 | $6.25 | 177 | 495 | 03 Nov 2025 | By son |
| Richard Bryan Riggsbee | NEOG | Common Stock | Award | 178,855 | 178,855 | 03 Nov 2025 | Direct | |||
| Richard Bryan Riggsbee | NEOG | Common Stock (Right to Buy) | Award | 459,713 | 459,713 | 03 Nov 2025 | Direct | |||
| James C. Borel | NEOG | Common Stock | Options Exercise | 1.88% | 1,777 | 96,347 | 27 Oct 2025 | Direct | ||
| James C. Borel | NEOG | Restricted Stock Units | Options Exercise | -50% | -1,777 | 1,777 | 27 Oct 2025 | Direct | ||
| Jeffrey D. Capello | NEOG | Common Stock | Options Exercise | 5.78% | 1,777 | 32,502 | 27 Oct 2025 | Direct | ||
| Jeffrey D. Capello | NEOG | Restricted Stock Units | Options Exercise | -50% | -1,777 | 1,777 | 27 Oct 2025 | Direct | ||
| Ronald D. Green | NEOG | Common Stock | Options Exercise | 10.5% | 1,777 | 18,654 | 27 Oct 2025 | Direct | ||
| Ronald D. Green | NEOG | Restricted Stock Units | Options Exercise | -50% | -1,777 | 1,777 | 27 Oct 2025 | Direct | ||
| Aashima Gupta | NEOG | Common Stock | Options Exercise | 6.83% | 1,777 | 27,790 | 27 Oct 2025 | Direct | ||
| Aashima Gupta | NEOG | Restricted Stock Units | Options Exercise | -50% | -1,777 | 1,777 | 27 Oct 2025 | Direct | ||
| Rafael A. Rodriguez | NEOG | Common Stock | Options Exercise | 9.33% | 1,777 | 20,821 | 27 Oct 2025 | Direct | ||
| Rafael A. Rodriguez | NEOG | Restricted Stock Units | Options Exercise | -50% | -1,777 | 1,777 | 27 Oct 2025 | Direct | ||
| James P. Tobin | NEOG | Common Stock | Options Exercise | 4.27% | 1,777 | 43,347 | 27 Oct 2025 | Direct | ||
| James P. Tobin | NEOG | Restricted Stock Units | Options Exercise | -50% | -1,777 | 1,777 | 27 Oct 2025 | Direct | ||
| Catherine E. Woteki | NEOG | Common Stock | Options Exercise | 10.2% | 1,777 | 19,117 | 27 Oct 2025 | Direct | ||
| Catherine E. Woteki | NEOG | Restricted Stock Units | Options Exercise | -50% | -1,777 | 1,777 | 27 Oct 2025 | Direct | ||
| Amy M. Rocklin | NEOG | Common Stock | Tax liability | -3.51% | -2,085 | 57,240 | 27 Oct 2025 | Direct | ||
| Amy M. Rocklin | NEOG | Common Stock | Options Exercise | 19% | 9,474 | 59,325 | 27 Oct 2025 | Direct | ||
| Amy M. Rocklin | NEOG | Restricted Stock Units | Options Exercise | -50% | -9,474 | 9,474 | 27 Oct 2025 | Direct | ||
| David H. Naemura | NEOG | Common Stock | Tax liability | -5% | -4,261 | 81,024 | 27 Oct 2025 | Direct | ||
| David H. Naemura | NEOG | Common Stock | Options Exercise | 22.2% | 15,504 | 85,285 | 27 Oct 2025 | Direct | ||
| David H. Naemura | NEOG | Restricted Stock Units | Options Exercise | -50% | -15,504 | 15,504 | 27 Oct 2025 | Direct | ||
| Douglas Edward Jones | NEOG | Common Stock | Tax liability | -3.34% | -3,481 | 100,881 | 27 Oct 2025 | Direct | ||
| Douglas Edward Jones | NEOG | Common Stock | Options Exercise | 17.4% | 15,504 | 104,362 | 27 Oct 2025 | Direct | ||
| Douglas Edward Jones | NEOG | Restricted Stock Units | Options Exercise | -50% | -15,504 | 15,504 | 27 Oct 2025 | Direct | ||
| John Edward Adent | NEOG | Common Stock | Tax liability | -2.29% | -8,527 | 363,081 | 27 Oct 2025 | Direct | ||
| John Edward Adent | NEOG | Common Stock | Options Exercise | 11.6% | 38,759 | 371,608 | 27 Oct 2025 | Direct | ||
| John Edward Adent | NEOG | Restricted Stock Units | Options Exercise | -50% | -38,759 | 38,759 | 27 Oct 2025 | Direct | ||
| Boehm William T. | NEOG | Common Stock | Options Exercise | 8.01% | 3,553 | 47,913 | 27 Oct 2025 | Direct | ||
| Boehm William T. | NEOG | Restricted Stock Units | Options Exercise | -100% | -3,553 | 0 | 27 Oct 2025 | Direct | ||
| Jeffrey D. Capello | NEOG | Common Stock | Options Exercise | 7.06% | 2,025 | 30,725 | 27 Oct 2025 | Direct | ||
| Jeffrey D. Capello | NEOG | Restricted Stock Units | Options Exercise | -33.3% | -2,025 | 4,050 | 27 Oct 2025 | Direct | ||
| James C. Borel | NEOG | Common Stock | Options Exercise | 2.19% | 2,025 | 94,570 | 27 Oct 2025 | Direct | ||
| James C. Borel | NEOG | Restricted Stock Units | Options Exercise | -33.3% | -2,025 | 4,050 | 27 Oct 2025 | Direct | ||
| Avi Pelossof | NEOG | Common Stock | Award | 19,386 | 19,386 | 24 Oct 2025 | Direct | |||
| Avi Pelossof | NEOG | Common Stock (Right to Buy) | Award | 49,929 | 49,929 | 24 Oct 2025 | Direct | |||
| Catherine E. Woteki | NEOG | Common Stock | Award | 129.1% | 19,769 | 35,084 | 23 Oct 2025 | Direct | ||
| Catherine E. Woteki | NEOG | Common Stock (Right to Buy) | Award | 50,814 | 50,814 | 23 Oct 2025 | Direct | |||
| Andrea F. Wainer | NEOG | Common Stock | Award | 19,769 | 19,769 | 23 Oct 2025 | Direct | |||
| Andrea F. Wainer | NEOG | Common Stock (Right to Buy) | Award | 50,814 | 50,814 | 23 Oct 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.