Key facts
- NEOG - NEOGEN CORP has 24 insiders with reported activity on this page.
- Net insider value flow over the last year: +$3,123.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 24 Insiders of NEOGEN CORP
- Symbol
- NEOG on Nasdaq
- Location
- Lansing, MI
Change
- Buy value: $3,123; sell value: $0.
- Net share flow: +386.
Research use
- 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.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$3,123.
Buys
$3,123
Shares: 386
Insiders: 1
Sells
$0
Shares: 0
Insiders: 0
Net
+$3,123
Shares: +386
Insiders: 1
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 209 | 0 | $2,017 | $0 | +$2,017 |
| 6-9 | 177 | 0 | $1,106 | $0 | +$1,106 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
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 | Former Chief Legal Officer | $6,816,682 | Mixed | 18 May 2026 | ||
| 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 | Mixed | 27 Oct 2025 | ||
| Douglas Edward Jones | Former COO | $720,422 | Mixed | 27 Oct 2025 | ||
| Boehm William T. | Director | $559,994 | Mixed | 27 Oct 2025 | ||
| James P. Tobin | Director | $548,479 | Mixed | 27 Oct 2025 | ||
| Steven J. Quinlan | Vp & Cfo | $525,352 | Mixed | 11 Oct 2022 | ||
| John Patrick Moylan | Chief Accounting Officer | $497,539 | Mixed | 04 May 2026 | ||
| Jeffrey D. Capello | Director | $481,349 | Mixed | 27 Oct 2025 | ||
| Aashima Gupta | Director | $452,182 | Mixed | 27 Oct 2025 | ||
| Thierry Bernard | Director | $438,779 | Mixed | 23 Oct 2025 | ||
| Rafael A. Rodriguez | Director | $409,043 | Mixed | 27 Oct 2025 | ||
| Catherine E. Woteki | Director | $398,496 | 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 | ||
| Jennifer Evans Stacey | Chief Legal Officer | $365,552 | Median | 01 May 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 first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings 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
|
32,621,005
|
$303,049,138 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
|
Vanguard Portfolio Management · Company |
5.9%
|
12,916,330
|
$119,992,706 | $0 | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
|
Vanguard Capital Management · Company |
5.1%
|
11,164,628
|
$103,719,394 | $0 | 31 Mar 2026 | |
| BAILLIE GIFFORD & CO |
13D/G
|
— |
4.5%
|
9,749,003
|
$49,037,485 | -$7,435,426 | 31 Dec 2024 | |
| Select Equity Group, L.P. |
13D/G
|
— |
4.3%
|
9,396,150
|
$47,262,634 | $0 | 31 Dec 2024 | |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13D/G
|
— |
4.3%
|
9,403,020
|
$44,946,436 | $0 | 30 Jun 2025 | |
| NORGES BANK |
13D/G
|
— |
4.2%
|
9,076,830
|
$43,387,247 | -$27,394,825 | 30 Jun 2025 | |
| ING GROEP NV |
13F
13D/G
|
Company |
4%
from 13D/G
|
8,904,300
|
$82,720,947 | — | 31 Mar 2026 | |
| Gates Capital Management, Inc. |
13D/G
13F
|
Gates Capital Management, L.P. · Company |
3.9%
|
8,385,534
|
$58,614,883 | -$30,814,765 | 31 Dec 2025 | |
| Clarkston Capital Partners, LLC |
13D/G
13F
|
Company |
1%
|
2,204,788
|
$20,769,103 | -$89,381,312 | 31 Mar 2026 | |
| T. Rowe Price Investment Management, Inc. |
13F
|
Company |
4.7%
|
10,162,715
|
$94,412,000 | — | 31 Mar 2026 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
4.2%
|
9,132,021
|
$84,831,177 | — | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
3.9%
|
8,590,344
|
$79,804,296 | — | 31 Mar 2026 | |
| MACKENZIE FINANCIAL CORP |
13F
|
Company |
3.6%
|
7,803,226
|
$72,491,970 | — | 31 Mar 2026 | |
| Neuberger Berman Group LLC |
13F
|
Company |
3.6%
|
7,751,718
|
$71,990,206 | — | 31 Mar 2026 | |
| Hudson Bay Capital Management LP |
13F
|
Company |
3%
|
6,500,180
|
$60,386,672 | — | 31 Mar 2026 | |
| SG Americas Securities, LLC |
13F
|
Company |
2.9%
|
6,266,033
|
$58,211,000 | — | 31 Mar 2026 | |
| CIBC Bancorp USA Inc. |
13F
|
Company |
2.7%
|
5,993,222
|
$55,677,033 | — | 31 Mar 2026 | |
| CIBC WORLD MARKET INC. |
13F
|
Company |
2.7%
|
5,961,600
|
$55,383,264 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.5%
|
5,561,613
|
$51,677,309 | — | 31 Mar 2026 | |
| BAMCO INC /NY/ |
13F
|
Company |
2.3%
|
5,009,659
|
$46,539,732 | — | 31 Mar 2026 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
2.1%
|
4,640,534
|
$43,110,559 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
2.1%
|
4,580,427
|
$42,552,169 | — | 31 Mar 2026 | |
| MUFG Securities EMEA plc |
13F
|
Company |
1.8%
|
4,000,011
|
$37,160,102 | — | 31 Mar 2026 | |
| MIZUHO MARKETS AMERICAS LLC |
13F
|
Company |
1.6%
|
3,500,000
|
$32,515,000 | — | 31 Mar 2026 | |
| NATIONAL BANK OF CANADA /FI/ |
13F
|
Company |
1.6%
|
3,500,000
|
$32,515,000 | — | 31 Mar 2026 | |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND |
13F
|
Company |
1.5%
|
3,297,346
|
$30,632,344 | — | 31 Mar 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.4%
|
3,053,882
|
$28,370,564 | — | 31 Mar 2026 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
1.2%
|
2,517,129
|
$23,384,128 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1.1%
|
2,361,279
|
$21,936,282 | — | 31 Mar 2026 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1%
|
2,226,830
|
$20,687,247 | — | 31 Mar 2026 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
1%
|
2,222,776
|
$20,649,590 | — | 31 Mar 2026 | |
| SG Capital Management LLC |
13F
|
Company |
0.98%
|
2,136,724
|
$19,850,166 | — | 31 Mar 2026 | |
| NOMURA HOLDINGS INC |
13F
|
Company |
0.96%
|
2,088,042
|
$19,397,910 | — | 31 Mar 2026 | |
| FMR LLC |
13F
|
Company |
0.87%
|
1,905,343
|
$17,700,640 | — | 31 Mar 2026 | |
| GLENMEDE TRUST CO NA |
13F
|
Company |
0.84%
|
1,829,298
|
$16,994,178 | — | 31 Mar 2026 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.73%
|
1,598,002
|
$14,845,439 | — | 31 Mar 2026 | |
| BESSEMER GROUP INC |
13F
|
Company |
0.72%
|
1,565,625
|
$14,545,000 | — | 31 Mar 2026 | |
| UBS Group AG |
13F
|
Company |
0.69%
|
1,512,464
|
$14,050,791 | — | 31 Mar 2026 | |
| KENNEDY CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.66%
|
1,447,497
|
$13,447,247 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.65%
|
1,408,712
|
$13,086,934 | — | 31 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.57%
|
1,246,638
|
$11,581,266 | — | 31 Mar 2026 | |
| Nuveen, LLC |
13F
|
Company |
0.55%
|
1,207,784
|
$11,220,313 | — | 31 Mar 2026 | |
| Invesco Ltd. |
13F
|
Company |
0.54%
|
1,173,537
|
$10,902,159 | — | 31 Mar 2026 | |
| KING LUTHER CAPITAL MANAGEMENT CORP |
13F
|
Company |
0.5%
|
1,100,678
|
$10,225,299 | — | 31 Mar 2026 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.48%
|
1,057,248
|
$9,821,834 | — | 31 Mar 2026 | |
| HEARTLAND ADVISORS INC |
13F
|
Company |
0.46%
|
1,000,000
|
$9,290,000 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.46%
|
998,604
|
$9,277,031 | — | 31 Mar 2026 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
0.45%
|
977,678
|
$9,082,629 | — | 31 Mar 2026 | |
| FRED ALGER MANAGEMENT, LLC |
13F
|
Company |
0.44%
|
970,928
|
$9,019,922 | — | 31 Mar 2026 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Amy M. Rocklin | NEOG | Common Stock | Tax liability | -11.1% | -10,241 | 82,182 | 18 May 2026 | Direct | ||
| Amy M. Rocklin | NEOG | Common Stock | Options Exercise | 61.5% | 35,183 | 92,423 | 18 May 2026 | Direct | ||
| Amy M. Rocklin | NEOG | Restricted Stock Units | Options Exercise | -100% | -35,183 | 0 | 18 May 2026 | Direct | ||
| John Patrick Moylan | NEOG | Common Stock | Tax liability | -8.29% | -1,568 | 17,337 | 04 May 2026 | Direct | ||
| John Patrick Moylan | NEOG | Common Stock | Options Exercise | 31.8% | 4,558 | 18,905 | 04 May 2026 | Direct | ||
| John Patrick Moylan | NEOG | Restricted Stock Units | Options Exercise | -50% | -4,558 | 4,558 | 04 May 2026 | Direct | ||
| Jennifer Evans Stacey | NEOG | Common Stock | Award | 39,349 | 39,349 | 01 May 2026 | Direct | |||
| Jennifer Evans Stacey | NEOG | Common Stock (Right to Buy) | Award | 89,520 | 89,520 | 01 May 2026 | Direct | |||
| 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 |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.