Comparable stake leader
DODGE & COX
SEC ownership of Avantor, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001722482.
Disclosed value leader
DODGE & COX
Comparable rows
50/50
Latest evidence
07 May 2026
- Public ticker
- AVTR on NYSE
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
DODGE & COX
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
DODGE & COX
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
07 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001722482
- Issuer location
- Radnor, PA
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 Avantor, 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
DODGE & COX
Disclosed value leader
DODGE & COX
Comparable rows
50/50
Latest evidence
07 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 17%
13D/G row: DODGE & COX
Showing 1-8 of 50 holder rows.
Quick read
DODGE & COX leads the comparable SEC ownership view at 17%.
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 DODGE & COX's linked filing trail.
Comparable ownership
Top 5
DODGE & COX
17%
BlackRock, Inc.
8.7%
VANGUARD CAPITAL MANAGEMENT LLC
5.3%
T. Rowe Price Investment Manageme...
4.8%
Sanjeev K. Mehra
0.08%
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 |
|---|---|---|---|---|---|
| DODGE & COX |
13D/G
13F
Company
|
17%
|
$1,580,654,695
117,433,484 shares
|
+$246,152,630 | 30 Jun 2025 |
| BlackRock, Inc. |
13D/G
13F
Company
|
8.7%
|
$736,938,696
59,049,575 shares
|
$0 | 30 Sep 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.3%
|
$280,689,742
35,802,263 shares
|
$0 | 31 Mar 2026 |
| T. Rowe Price Investment Management, Inc. |
13D/G
13F
Company
|
4.8%
|
$410,946,619
32,928,415 shares
|
-$294,182,304 | 30 Sep 2025 |
| Sanjeev K. Mehra |
3/4/5
Director
|
0.08%
|
$3,985,667
508,376 shares
|
+$4,882,750 | 07 May 2026 |
| Gregory L. Summe |
3/4/5
Director
|
0.07%
|
$3,789,707
483,381 shares
|
+$3,321,000 | 07 May 2026 |
| Jonathan M. Peacock |
3/4/5
Director
|
0.03%
|
$3,345,584
219,815 shares
|
— | 08 May 2025 |
| Gregory T. Lucier |
3/4/5
Director
|
0.01%
|
$765,807
94,006 shares
|
+$541,200 | 07 May 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: +$9,901,983.
Buys
$9,941,575
Insiders: 5
Sells
$39,592
Insiders: 1
Net
+$9,901,983
Shares: +944,024
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 947,500
Shares: 3,476
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 35,000 | 0 | $286,700 | $0 | +$286,700 |
| 3-6 | 275,000 | 0 | $2,399,250 | $0 | +$2,399,250 |
| 6-9 | 537,500 | 0 | $5,999,625 | $0 | +$5,999,625 |
| 9-12 | 100,000 | 3,476 | $1,256,000 | $39,592 | +$1,216,408 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 41 reporting-owner rows connected to Avantor, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
41
Largest Forms 3/4/5 holder
Thomas Connolly
Net 12M change
+$9,901,983
Latest report
21 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Thomas Connolly | Director | $1,657,922,188 | Mixed | 17 May 2019 | ||
| GOLDMAN SACHS & CO. LLC | 10%+ Owner | $1,657,916,481 | Mixed | 17 May 2019 | ||
| Michael Stubblefield | President & CEO, Director | $24,333,353 | Mixed | 21 May 2025 | ||
| Rajiv L. Gupta | Director | $17,820,230 | Mixed | 01 Apr 2022 | ||
| Jo Natauri | Director | $14,846,744 | Mixed | 12 Jul 2021 | ||
| Emmanuel Ligner | President and CEO, Director | $9,520,170 | +$993,125 | +12% | Mixed | 19 Feb 2026 |
| Thomas A. Szlosek | Evp & Cfo | $5,808,866 | Mixed | 17 May 2023 | ||
| Sanjeev K. Mehra | Director | $3,985,667 | +$4,882,750 | +123% | Median | 07 May 2026 |
| Gregory L. Summe | Director | $3,789,707 | +$3,321,000 | +709% | Median | 07 May 2026 |
| R. Brent Jones | EVP, Chief Financial Officer | $3,731,861 | Mixed | 23 Feb 2026 | ||
| Frederic Vanderhaegen | EVP, Americas and Europe | $3,669,580 | Mixed | 25 Aug 2023 | ||
| Jonathan M. Peacock | Director | $3,345,584 | Mixed | 08 May 2025 | ||
| Benoit Gourdier | EVP, Bioscience & Medtech | $3,225,816 | Mixed | 23 Feb 2026 | ||
| Devashish Ohri | Evp, Imea | $3,175,539 | Mixed | 27 May 2021 | ||
| Mary Blenn | EVP, Chief Operating Officer | $3,144,495 | Mixed | 19 Feb 2026 | ||
| Corey Walker | President, VWR Dist. & Servs. | $3,014,754 | Median | 21 Jun 2026 | ||
| Christophe Couturier | Evp, Amea | $2,843,707 | Mixed | 08 Aug 2025 | ||
| Brittany Hankamer | EVP, Chief HR Officer | $2,268,799 | Mixed | 23 Feb 2026 | ||
| Claudius Sokenu | EVP, Chief Legal & Compliance | $2,244,093 | Mixed | 23 Feb 2026 | ||
| Michael Wondrasch | Evp & Cio | $2,193,324 | Mixed | 20 Feb 2023 |
Recent insider transactions for Avantor, 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Corey Walker | AVTR | Common Stock | Tax liability | -0.78% | -3,010 | 384,535 | 21 Jun 2026 | Direct | ||
| Lucier Gregory T. | AVTR | Common Stock | Purchase | 20% | $83,200 | $8.32 | 10,000 | 60,000 | 08 May 2026 | By a Trust |
| Mala Murthy | AVTR | Common Stock | Award | 57.2% | 25,270 | 69,479 | 07 May 2026 | Direct | ||
| Lucier Gregory T. | AVTR | Common Stock | Award | 289.3% | 25,270 | 34,006 | 07 May 2026 | Direct | ||
| Simon Dingemans | AVTR | Common Stock | Award | 405.9% | 25,270 | 31,495 | 07 May 2026 | Direct | ||
| Louise Makin | AVTR | Common Stock | Award | 115.6% | 25,270 | 47,140 | 07 May 2026 | Direct | ||
| Joseph R. Massaro | AVTR | Common Stock | Award | 48.5% | 25,270 | 77,408 | 07 May 2026 | Direct | ||
| Sanjeev K. Mehra | AVTR | Common Stock | Award | 311.7% | 25,270 | 33,376 | 07 May 2026 | Direct | ||
| Michael Severino | AVTR | Common Stock | Award | 41.7% | 25,270 | 85,821 | 07 May 2026 | Direct | ||
| Gregory L. Summe | AVTR | Common Stock | Award | 43.5% | 25,270 | 83,381 | 07 May 2026 | Direct | ||
| Simon Dingemans | AVTR | Common Stock | Purchase | $203,500 | $8.14 | 25,000 | 25,000 | 01 May 2026 | By Spouse | |
| Ludovic Brellier | AVTR | Common Stock | Award | 146,566 | 146,566 | 01 May 2026 | Direct | |||
| Ludovic Brellier | AVTR | Stock Options (Right to Buy) | Award | 246,002 | 246,002 | 01 May 2026 | Direct | |||
| Steven W. Eck | AVTR | Common Stock | Award | 31.9% | 31,645 | 130,978 | 03 Apr 2026 | Direct | ||
| Sanjeev K. Mehra | AVTR | Common Stock | Purchase | 35.7% | $1,001,250 | $8.01 | 125,000 | 475,000 | 10 Mar 2026 | By limited liability company |
| Brittany Hankamer | AVTR | Common Stock | Tax liability | -0.14% | -359 | 249,045 | 24 Feb 2026 | Direct | ||
| Steven W. Eck | AVTR | Common Stock | Tax liability | -0.45% | -452 | 99,333 | 24 Feb 2026 | Direct | ||
| Claudius Sokenu | AVTR | Common Stock | Tax liability | -0.93% | -2,376 | 252,429 | 23 Feb 2026 | Direct | ||
| Brittany Hankamer | AVTR | Common Stock | Tax liability | -0.53% | -1,324 | 249,404 | 23 Feb 2026 | Direct | ||
| R. Brent Jones | AVTR | Common Stock | Tax liability | -0.66% | -2,805 | 419,782 | 23 Feb 2026 | Direct | ||
| Benoit Gourdier | AVTR | Common Stock | Tax liability | -0.83% | -3,029 | 362,859 | 23 Feb 2026 | Direct | ||
| Steven W. Eck | AVTR | Common Stock | Tax liability | -1.98% | -2,017 | 99,785 | 23 Feb 2026 | Direct | ||
| Brittany Hankamer | AVTR | Common Stock | Tax liability | -0.58% | -1,453 | 250,728 | 20 Feb 2026 | Direct | ||
| Steven W. Eck | AVTR | Common Stock | Tax liability | -2.04% | -2,125 | 101,802 | 20 Feb 2026 | Direct | ||
| Corey Walker | AVTR | Common Stock | Tax liability | -1.26% | -4,963 | 387,545 | 20 Feb 2026 | Direct | ||
| Claudius Sokenu | AVTR | Common Stock | Tax liability | -1.13% | -2,919 | 254,805 | 20 Feb 2026 | Direct | ||
| Benoit Gourdier | AVTR | Common Stock | Tax liability | -1.12% | -4,160 | 365,888 | 20 Feb 2026 | Direct | ||
| R. Brent Jones | AVTR | Common Stock | Tax liability | -2.2% | -9,506 | 422,587 | 20 Feb 2026 | Direct | ||
| Brittany Hankamer | AVTR | Common Stock | Award | 47% | 80,618 | 252,181 | 19 Feb 2026 | Direct | ||
| Brittany Hankamer | AVTR | Stock Options (Right to Buy) | Award | 317,310 | 317,310 | 19 Feb 2026 | Direct | |||
| Lucier Gregory T. | AVTR | Common Stock | Purchase | $458,000 | $9.16 | 50,000 | 50,000 | 19 Feb 2026 | By a Trust | |
| Mary Blenn | AVTR | Common Stock | Award | 1357% | 235,993 | 253,384 | 19 Feb 2026 | Direct | ||
| Mary Blenn | AVTR | Stock Options (Right to Buy) | Award | 1,041,766 | 1,041,766 | 19 Feb 2026 | Direct | |||
| Steven W. Eck | AVTR | Common Stock | Award | 88.7% | 48,859 | 103,927 | 19 Feb 2026 | Direct | ||
| Steven W. Eck | AVTR | Stock Options (Right to Buy) | Award | 43,230 | 43,230 | 19 Feb 2026 | Direct | |||
| Emmanuel Ligner | AVTR | Common Stock | Award | 170.7% | 483,713 | 767,137 | 19 Feb 2026 | Direct | ||
| Emmanuel Ligner | AVTR | Stock Options (Right to Buy) | Award | 1,903,847 | 1,903,847 | 19 Feb 2026 | Direct | |||
| Corey Walker | AVTR | Common Stock | Award | 69.7% | 161,237 | 392,508 | 19 Feb 2026 | Direct | ||
| Corey Walker | AVTR | Stock Options (Right to Buy) | Award | 634,617 | 634,617 | 19 Feb 2026 | Direct | |||
| Claudius Sokenu | AVTR | Common Stock | Award | 45.5% | 80,618 | 257,724 | 19 Feb 2026 | Direct | ||
| Claudius Sokenu | AVTR | Stock Options (Right to Buy) | Award | 317,310 | 317,310 | 19 Feb 2026 | Direct | |||
| Benoit Gourdier | AVTR | Common Stock | Award | 57% | 134,364 | 370,048 | 19 Feb 2026 | Direct | ||
| Benoit Gourdier | AVTR | Stock Options (Right to Buy) | Award | 528,848 | 528,848 | 19 Feb 2026 | Direct | |||
| R. Brent Jones | AVTR | Common Stock | Award | 59.5% | 161,237 | 432,093 | 19 Feb 2026 | Direct | ||
| R. Brent Jones | AVTR | Stock Options (Right to Buy) | Award | 634,617 | 634,617 | 19 Feb 2026 | Direct | |||
| Gregory L. Summe | AVTR | Common Stock | Purchase | 33.3% | $940,000 | $9.40 | 100,000 | 400,000 | 12 Feb 2026 | By a Trust |
| Simon Dingemans | AVTR | Common Stock | Award | 6,225 | 6,225 | 02 Jan 2026 | Direct | |||
| Sanjeev K. Mehra | AVTR | Common Stock | Purchase | $3,881,500 | $11.09 | 350,000 | 350,000 | 05 Dec 2025 | By limited liability company | |
| Sanjeev K. Mehra | AVTR | Common Stock | Award | 8,106 | 8,106 | 05 Dec 2025 | Direct | |||
| Emmanuel Ligner | AVTR | Common Stock | Purchase | 44.7% | $993,125 | $11.35 | 87,500 | 283,424 | 17 Nov 2025 | Direct |
* marks a reported price that did not pass the local price check.