Comparable stake leader
BlackRock, Inc.
SEC ownership of NEOGEN CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000711377.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Public ticker
- NEOG on Nasdaq
- Parsed ownership sources
-
13F and 13D/G
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
31 Mar 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000711377
- Issuer location
- Lansing, MI
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of NEOGEN CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
31 Mar 2026
13F
13D/G
Lead comparable stake: 14%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 14%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
14%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.9%
VANGUARD CAPITAL MANAGEMENT LLC
5.1%
BAILLIE GIFFORD & CO
4.5%
Select Equity Group, L.P.
4.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
14%
from 13D/G
|
$303,049,138
32,621,005 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.9%
|
$119,992,706
12,916,330 shares
|
$0 | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.1%
|
$103,719,394
11,164,628 shares
|
$0 | 31 Mar 2026 |
| BAILLIE GIFFORD & CO |
13D/G
|
4.5%
|
$49,037,485
9,749,003 shares
|
-$7,435,426 | 31 Dec 2024 |
| Select Equity Group, L.P. |
13D/G
|
4.3%
|
$47,262,634
9,396,150 shares
|
$0 | 31 Dec 2024 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13D/G
|
4.3%
|
$44,946,436
9,403,020 shares
|
$0 | 30 Jun 2025 |
| NORGES BANK |
13D/G
|
4.2%
|
$43,387,247
9,076,830 shares
|
-$27,394,825 | 30 Jun 2025 |
| ING GROEP NV |
13F
13D/G
Company
|
4%
from 13D/G
|
$82,720,947
8,904,300 shares
|
— | 31 Mar 2026 |
How to read this table
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.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$3,123.
Buys
$3,123
Insiders: 1
Sells
$0
Insiders: 0
Net
+$3,123
Shares: +386
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 386
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 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 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 24 reporting-owner rows connected to NEOGEN CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
24
Largest Forms 3/4/5 holder
Amy M. Rocklin
Net 12M change
+$3,123
Latest report
03 Jun 2026
| 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 | 03 Jun 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 |
Recent insider transactions for NEOGEN CORP
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| John Patrick Moylan | NEOG | Restricted Stock Units | Tax liability | -9.77% | -2,553 | 23,571 | 03 Jun 2026 | Direct | ||
| 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 |
* marks a reported price that did not pass the local price check.