Comparable stake leader
VANGUARD PORTFOLIO MANAGEMENT LLC
SEC ownership of Azenta, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000933974.
Disclosed value leader
Politan Capital Management LP
Comparable rows
50/50
Latest evidence
15 May 2026
- Public ticker
- AZTA on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
VANGUARD PORTFOLIO MANAGEMENT LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
VANGUARD PORTFOLIO MANAGEMENT LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
15 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000933974
- Issuer location
- Burlington, MA
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 Azenta, Inc. (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
VANGUARD PORTFOLIO MANAGE...
Disclosed value leader
Politan Capital Managemen...
Comparable rows
50/50
Latest evidence
15 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 5.4%
13D/G row: VANGUARD PORTFOLIO MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD PORTFOLIO MANAGEMENT LLC leads the comparable SEC ownership view at 5.4%.
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 VANGUARD PORTFOLIO MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD PORTFOLIO MANAGEMENT LLC
5.4%
DIMENSIONAL FUND ADVISORS LP
4.6%
BlackRock, Inc.
13%
Quentin Koffey
10%
John Marotta
0.46%
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 |
|---|---|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.4%
|
$52,110,637
2,466,192 shares
|
$0 | 31 Mar 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
Company
|
4.6%
|
$69,829,087
2,099,441 shares
|
$0 | 31 Dec 2025 |
| BlackRock, Inc. |
13D/G
13F
Company
|
13%
|
$191,065,526
6,207,457 shares
|
+$26,823,477 | 30 Jun 2025 |
| Quentin Koffey |
3/4/5
Director
|
10%
|
$107,841,758
4,622,450 shares
|
— | 05 Feb 2026 |
| John Marotta |
3/4/5
President and CEO, Director
|
0.46%
|
$6,559,972
213,194 shares
|
-$9,294 | 24 Nov 2025 |
| Lawrence Y. Lin |
3/4/5
EVP, CFO and Treasurer
|
0.17%
|
$2,381,684
79,655 shares
|
— | 24 Nov 2025 |
| Ephraim Starr |
3/4/5
SVP, Gen Counsel & Secretary
|
0.15%
|
$1,445,144
68,393 shares
|
— | 15 May 2026 |
| Ginger Zhou |
3/4/5
SVP and GM, Multiomics
|
0.08%
|
$1,158,774
38,755 shares
|
-$30,966 | 24 Nov 2025 |
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: +$92,575.
Buys
$163,800
Insiders: 1
Sells
$71,225
Insiders: 3
Net
+$92,575
Shares: +7,514
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 10,000
Shares: 2,486
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 10,000 | 0 | $163,800 | $0 | +$163,800 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 2,486 | $0 | $71,225 | -$71,225 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 41 reporting-owner rows connected to Azenta, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
41
Largest Forms 3/4/5 holder
Politan Capital Management LP
Net 12M change
+$92,574
Latest report
18 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Politan Capital Management LP | Director by deputization | $201,441,327 | Mixed | 01 Nov 2024 | ||
| Quentin Koffey | Director | $107,841,758 | Mixed | 05 Feb 2026 | ||
| Stephen S. Schwartz | CEO, Director | $25,881,227 | Mixed | 15 Nov 2023 | ||
| Jason W. Joseph | SVP, General Counsel, Secy. | $10,104,750 | Mixed | 19 Nov 2024 | ||
| Lindon G. Robertson | EVP & Chief Financial Officer | $7,017,855 | Mixed | 15 Nov 2023 | ||
| John Marotta | President and CEO, Director | $6,559,972 | -$9,294 | -0.14% | Mixed | 24 Nov 2025 |
| Mark S. Wrighton | Director | $6,480,971 | Mixed | 11 Feb 2022 | ||
| Krishna G. Palepu | Director | $6,108,578 | Mixed | 13 Feb 2023 | ||
| William T. Montone | SVP, Human Resources | $5,328,611 | Mixed | 27 Sep 2021 | ||
| Joseph R. Martin | Director | $4,936,743 | Mixed | 06 Jun 2023 | ||
| David C. Gray | Chief Strategy & New Business | $4,339,349 | Mixed | 17 Nov 2023 | ||
| Robin Vacha | SVP, GM Life Science Products | $2,899,549 | Mixed | 01 Feb 2024 | ||
| David E. Jarzynka | President, Semi Solutions | $2,684,417 | Mixed | 19 Nov 2021 | ||
| Ellen M. Zane | Director | $2,384,127 | Mixed | 08 Aug 2023 | ||
| Lawrence Y. Lin | EVP, CFO and Treasurer | $2,381,684 | Mixed | 24 Nov 2025 | ||
| Robyn C. Davis | Director | $1,759,365 | Mixed | 05 Feb 2026 | ||
| Matthew McManus Power | EVP & Chief Operating Officer | $1,667,832 | Mixed | 19 Aug 2022 | ||
| David F. Pietrantoni | Principal Accounting Officer | $1,586,655 | Mixed | 17 Nov 2021 | ||
| Michael Rosenblatt | Director | $1,472,902 | Mixed | 12 Feb 2024 | ||
| Ephraim Starr | SVP, Gen Counsel & Secretary | $1,445,144 | Median | 15 May 2026 |
Recent insider transactions for Azenta, Inc.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| William L. Cornog | AZTA | Common | Purchase | 103.1% | $163,800 | $16.38 | 10,000 | 19,703 | 18 May 2026 | See footnote |
| Ephraim Starr | AZTA | Common | Tax liability | -5.03% | -3,621 | 68,393 | 15 May 2026 | Direct | ||
| William E. Martin III | AZTA | Common | Award | 17,790 | 17,790 | 28 Apr 2026 | Direct | |||
| Tina S. Nova | AZTA | Common | Award | 56% | 5,663 | 15,772 | 06 Feb 2026 | Direct | ||
| Quentin Koffey | AZTA | Common Stock | Award | 112.5% | 5,663 | 10,698 | 05 Feb 2026 | Direct | ||
| Martin D. Madaus | AZTA | Restricted Stock Unit | Award | 140.2% | 5,663 | 9,703 | 05 Feb 2026 | Direct | ||
| Dipal Doshi | AZTA | Common | Award | 140.2% | 5,663 | 9,703 | 05 Feb 2026 | Direct | ||
| Frank Casal | AZTA | Common | Award | 49.8% | 7,243 | 21,803 | 05 Feb 2026 | Direct | ||
| Erica McLaughlin | AZTA | Common | Award | 33.6% | 5,663 | 22,521 | 05 Feb 2026 | Direct | ||
| Robyn C. Davis | AZTA | Restricted Stock Unit | Award | 31.5% | 5,663 | 23,662 | 05 Feb 2026 | Direct | ||
| John Marotta | AZTA | Common | Award | 124.4% | 118,194 | 213,194 | 24 Nov 2025 | Direct | ||
| Lawrence Y. Lin | AZTA | Common | Award | 85.4% | 36,681 | 79,655 | 24 Nov 2025 | Direct | ||
| Olga Pirogova | AZTA | Common | Award | 97.4% | 16,303 | 33,038 | 24 Nov 2025 | Direct | ||
| Ginger Zhou | AZTA | Common | Award | 50.7% | 13,042 | 38,755 | 24 Nov 2025 | Direct | ||
| Ephraim Starr | AZTA | Common | Award | 90.6% | 34,235 | 72,014 | 24 Nov 2025 | Direct | ||
| Ginger Zhou | AZTA | Common | Tax liability | -4.17% | -1,118 | 25,713 | 14 Nov 2025 | Direct | ||
| Olga Pirogova | AZTA | Common | Tax liability | -8.49% | -1,553 | 16,735 | 14 Nov 2025 | Direct | ||
| Lawrence Y. Lin | AZTA | Common | Tax liability | -6.6% | -3,039 | 42,974 | 14 Nov 2025 | Direct | ||
| John Marotta | AZTA | Common | Tax liability | -10.4% | -10,980 | 95,000 | 14 Nov 2025 | Direct | ||
| John Marotta | AZTA | Common | Sale | -0.3% | $9,294 | $29.41 | -316 | 105,980 | 10 Sep 2025 | Direct |
| Olga Pirogova | AZTA | Common | Sale | -5.6% | $30,966 | $28.54 | -1,085 | 18,288 | 12 Aug 2025 | Direct |
| Ginger Zhou | AZTA | Common | Sale | -3.89% | $30,966 | $28.54 | -1,085 | 26,831 | 12 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.