Quick Takeaways
- AVTR - Avantor, Inc. has 40 insiders with reported activity on this page.
- Net insider value flow over the last year: +$11,121,909.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 40 Insiders of Avantor, Inc.
- Symbol
- AVTR on NYSE
- Location
- Radnor, PA
What Changed
- Buy value: $11,161,501; sell value: $39,591.
- Net share flow: +1,030,215.
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: +$11,121,909.
Buys
$11,161,501
Shares: 1,033,691
Insiders: 7
Sells
$39,592
Shares: 3,476
Insiders: 1
Net
+$11,121,909
Shares: +1,030,215
Insiders: 6
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 275,000 | 0 | $2,399,250 | $0 | +$2,399,250 |
| 3-6 | 537,500 | 0 | $5,999,625 | $0 | +$5,999,625 |
| 6-9 | 100,000 | 3,476 | $1,256,000 | $39,592 | +$1,216,408 |
| 9-12 | 121,191 | 0 | $1,506,626 | $0 | +$1,506,626 |
Avantor, Inc. executives and other stock owners filed with the SEC include:
| 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 | ||
| Gregory L. Summe | Director | $4,481,157 | +$4,561,500 | +102% | Mixed | 12 Feb 2026 |
| Sanjeev K. Mehra | Director | $3,905,345 | +$4,882,750 | +125% | Mixed | 10 Mar 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 | ||
| Corey Walker | President, VWR Dist. & Servs. | $3,499,531 | Mixed | 19 Feb 2026 | ||
| Jonathan M. Peacock | Director | $3,345,584 | +$103,646 | +3.2% | 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 | ||
| 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 | ||
| Justin Miller | EVP & General Counsel | $2,130,861 | Mixed | 17 May 2023 | ||
| Gerard Brophy | EVP, Biopharma Production | $2,032,601 | Mixed | 17 May 2023 | ||
| Randy Lee Stone | EVP, Laboratory Solutions | $1,675,383 | Mixed | 16 Apr 2024 | ||
| Sheri Lewis | EVP, Global Ops & Supply Chain | $1,613,898 | Mixed | 31 Dec 2023 | ||
| James Bramwell | EVP Sales, Customer Excellence | $1,472,285 | Filing P/S | 26 Feb 2025 | ||
| Steven W. Eck | SVP & Chief Accounting Officer | $1,026,631 | -$39,592 | -3.7% | Median | 03 Apr 2026 |
| Juan Andres | Director | $996,605 | Mixed | 08 May 2025 | ||
| Michael Severino | Director | $921,586 | Mixed | 08 May 2025 | ||
| Meghan Henson | EVP, Chief HR Officer | $917,401 | Mixed | 23 Feb 2023 | ||
| Kitty Sahin | EVP, Strategy&Corp Development | $876,763 | Mixed | 18 Jul 2024 | ||
| Christi Shaw | Director | $828,067 | Mixed | 11 May 2023 | ||
| Lan Kang | Director | $796,234 | +$62,850 | +8.6% | Mixed | 08 May 2025 |
| Joseph R. Massaro | Director | $793,540 | +$99,630 | +14% | Mixed | 08 May 2025 |
| John Carethers | Director | $697,958 | Mixed | 08 May 2025 | ||
| Mala Murthy | Director | $672,860 | Mixed | 08 May 2025 | ||
| Gregory T. Lucier | Director | $566,413 | +$458,000 | +422% | Mixed | 19 Feb 2026 |
| Mark Christopher Murray | EVP, Biomaterials & AT | $426,464 | Mixed | 13 Jan 2022 | ||
| Louise Makin | Director | $332,861 | Mixed | 08 May 2025 | ||
| Matthew S. Holt | Director | $180,540 | Mixed | 12 May 2022 | ||
| Simon Dingemans | Director | $71,338 | Mixed | 02 Jan 2026 |
Top shareholders of Avantor, Inc. (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 |
|---|---|---|---|---|---|---|---|---|
| Thomas Connolly |
3/4/5
|
Director |
—
mixed-class rows
|
72,620,178
mixed-class rows
|
$1,657,922,188 | — | 17 May 2019 | |
| GOLDMAN SACHS & CO. LLC |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
72,620,082
|
$1,657,916,481 | — | 17 May 2019 | |
| DODGE & COX |
13D/G
13F
|
Company |
17%
|
117,433,484
|
$1,580,654,695 | +$246,152,630 | 30 Jun 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
9.5%
|
64,904,889
|
$743,810,028 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13D/G
13F
|
Company |
8.7%
|
59,049,575
|
$736,938,696 | $0 | 30 Sep 2025 | |
| T. Rowe Price Investment Management, Inc. |
13D/G
13F
|
Company |
4.8%
|
32,928,415
|
$410,946,619 | -$294,182,304 | 30 Sep 2025 | |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC |
13F
|
Company |
4.9%
|
33,287,174
|
$381,471,014 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
3.4%
|
23,436,636
|
$268,583,848 | — | 31 Dec 2025 | |
| GREENHAVEN ASSOCIATES INC |
13F
|
Company |
3%
|
20,500,653
|
$234,937,483 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
3%
|
20,209,406
|
$231,599,793 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
2.6%
|
17,468,418
|
$200,188,089 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
2.5%
|
17,178,716
|
$196,868,086 | — | 31 Dec 2025 | |
| Clarkston Capital Partners, LLC |
13F
|
Company |
2.2%
|
15,105,065
|
$173,104,045 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.1%
|
14,606,596
|
$167,392,027 | — | 31 Dec 2025 | |
| New Mountain Capital, L.L.C. |
13F
|
Company |
2.1%
|
14,000,000
|
$160,440,000 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.8%
|
11,978,560
|
$137,306,603 | — | 31 Dec 2025 | |
| LONDON CO OF VIRGINIA |
13F
|
Company |
1.7%
|
11,936,522
|
$136,792,547 | — | 31 Dec 2025 | |
| Engine Capital Management, LP |
13F
|
Company |
1.7%
|
11,927,812
|
$136,692,726 | — | 31 Dec 2025 | |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE |
13F
|
Company |
1.3%
|
8,734,396
|
$100,096,178 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
1.1%
|
7,731,643
|
$88,604,629 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
1.1%
|
7,670,732
|
$87,906,592 | — | 31 Dec 2025 | |
| Robeco Schweiz AG |
13F
|
Company |
1.1%
|
7,280,961
|
$83,439,813 | — | 31 Dec 2025 | |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ |
13F
|
Company |
1.1%
|
7,214,408
|
$82,677,116 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
0.94%
|
6,398,087
|
$73,322,077 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.91%
|
6,215,923
|
$71,234,478 | — | 31 Dec 2025 | |
| EARNEST PARTNERS LLC |
13F
|
Company |
0.88%
|
6,031,807
|
$69,124,508 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.83%
|
5,685,243
|
$65,152,883 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.78%
|
5,309,454
|
$60,846,343 | — | 31 Dec 2025 | |
| SEI INVESTMENTS CO |
13F
|
Company |
0.77%
|
5,241,143
|
$60,063,519 | — | 31 Dec 2025 | |
| VOYA INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.73%
|
4,961,474
|
$56,858,492 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.72%
|
4,879,423
|
$55,918,188 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.65%
|
4,417,910
|
$50,629,245 | — | 31 Dec 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.64%
|
4,391,597
|
$50,327,700 | — | 31 Dec 2025 | |
| Voss Capital, LP |
13F
|
Company |
0.6%
|
4,102,790
|
$47,017,973 | — | 31 Dec 2025 | |
| First Pacific Advisors, LP |
13F
|
Company |
0.58%
|
3,968,620
|
$45,480,385 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.56%
|
3,831,817
|
$43,912,623 | — | 31 Dec 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.54%
|
3,668,997
|
$42,046,706 | — | 31 Dec 2025 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
0.53%
|
3,625,696
|
$41,550,480 | — | 31 Dec 2025 | |
| Assenagon Asset Management S.A. |
13F
|
Company |
0.53%
|
3,620,455
|
$41,490,414 | — | 31 Dec 2025 | |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ |
13F
|
Company |
0.52%
|
3,548,518
|
$40,666,017 | — | 31 Dec 2025 | |
| Brickwood Asset Management LLP |
13F
|
Company |
0.47%
|
3,184,043
|
$36,489,133 | — | 31 Dec 2025 | |
| Eversept Partners, LP |
13F
|
Company |
0.47%
|
3,176,644
|
$36,404,340 | — | 31 Dec 2025 | |
| Freestone Grove Partners LP |
13F
|
Company |
0.38%
|
2,584,006
|
$29,612,709 | — | 31 Dec 2025 | |
| PRIVATE MANAGEMENT GROUP INC |
13F
|
Company |
0.36%
|
2,456,859
|
$28,155,604 | — | 31 Dec 2025 | |
| TD ASSET MANAGEMENT INC |
13F
|
Company |
0.34%
|
2,292,088
|
$26,267,328 | — | 31 Dec 2025 | |
| Michael Stubblefield |
3/4/5
|
President & CEO, Director |
—
mixed-class rows
|
2,298,408
mixed-class rows
|
$24,333,353 | — | 21 May 2025 | |
| NATIXIS ADVISORS, LLC |
13F
|
Company |
0.31%
|
2,121,823
|
$24,316,000 | — | 31 Dec 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.31%
|
2,114,915
|
$24,236,959 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.31%
|
2,092,626
|
$23,981,493 | — | 31 Dec 2025 | |
| CITIGROUP INC |
13F
|
Company |
0.29%
|
2,001,522
|
$22,937,442 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for Avantor, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Mary Blenn | AVTR | Common Stock | Award | 17,391 | 17,391 | 10 Nov 2025 | Direct | |||
| Mary Blenn | AVTR | Stock Options (Right to Buy) | Award | 47,058 | 47,058 | 10 Nov 2025 | Direct | |||
| Gregory L. Summe | AVTR | Common Stock | Purchase | 50% | $1,125,000 | $11.25 | 100,000 | 300,000 | 30 Oct 2025 | By a Trust |
| Lucier Gregory T. | AVTR | Common Stock | Award | 8,736 | 8,736 | 03 Oct 2025 | Direct | |||
| Benoit Gourdier | AVTR | Common Stock | Tax liability | -0.53% | -1,264 | 235,684 | 02 Oct 2025 | Direct | ||
| Gregory L. Summe | AVTR | Common Stock | Purchase | 100% | $1,256,000 | $12.56 | 100,000 | 200,000 | 21 Aug 2025 | By a Trust |
| Emmanuel Ligner | AVTR | Common Stock | Award | 195,924 | 195,924 | 18 Aug 2025 | Direct | |||
| Emmanuel Ligner | AVTR | Stock Options (Right to Buy) | Award | 573,394 | 573,394 | 18 Aug 2025 | Direct | |||
| Brittany Hankamer | AVTR | Common Stock | Tax liability | -0.11% | -181 | 171,563 | 14 Aug 2025 | Direct | ||
| Christophe Couturier | AVTR | Common Stock | Award | 44.6% | 65,217 | 211,271 | 08 Aug 2025 | Direct | ||
| Steven W. Eck | AVTR | Common Stock | Sale | -5.94% | $39,592 | $11.39 | -3,476 | 55,068 | 05 Aug 2025 | Direct |
| Steven W. Eck | AVTR | Common Stock | Tax liability | -2.31% | -1,385 | 58,544 | 31 Jul 2025 | Direct | ||
| Claudius Sokenu | AVTR | Common Stock | Tax liability | -1.73% | -3,123 | 177,106 | 24 Jul 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.