Avantor AVTR Insider Ownership

NYSE AVTR
$14.88 -0.37 (-2.43%)
As of: Sep 9, 2026 · 3:59 PM EDT

Insider Holdings by Owner

6.77Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
0.0096%
■0% pp QoQ
Shares Held by Insiders
65.48K
filed for Sep 2026
■0.00% QoQ
Shares Outstanding
680.60Mn
680,600,000 shares
Direct Holdings
65.48K
Indirect: 0
Net Shares Traded (QoQ)
0
no net change in Sep 2026
Insiders Holding Shares
32
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Quarter ending 30 Sep, 2026

As of September 09, 2026, the three largest insider holders of AVTR are Michael Stubblefield (President Ceo, 1.76Mn shares), Michael Stubblefield (President Ceo, 1.76Mn shares), Emmanuel Ligner (President And Ceo, 767.14K shares).

Form 4 Holdings

Insiders Holding AVTR

Insiders 32
Shares held 6.77Mn
Of outstanding 0.995%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Michael Stubblefield President Ceo 1,219,013 545,500 1,764,513 26.1% 21 May, 2025
2 Emmanuel Ligner President And Ceo 737,334 0 737,334 10.9% 20 Aug, 2026
3 Jo Natauri Director 0 557,656 557,656 8.2% 13 Aug, 2021
4 R. Brent Jones Evp, Chief Financial Officer 419,782 0 419,782 6.2% 25 Feb, 2026
5 Corey Walker President, Vwr Dist. Servs. 384,535 0 384,535 5.7% 22 Jun, 2026
6 Benoit Gourdier Evp, Bioscience Medtech 362,859 0 362,859 5.4% 25 Feb, 2026
7 Mary Blenn Evp, Chief Operating Officer 253,384 0 253,384 3.7% 23 Feb, 2026
8 Claudius Sokenu Evp, Chief Legal Compliance 251,228 0 251,228 3.7% 27 Jul, 2026
9 Brittany Hankamer Evp, Chief Hr Officer 248,864 0 248,864 3.7% 18 Aug, 2026
10 Jonathan M Peacock Director 219,815 0 219,815 3.2% 12 May, 2025
11 Frederic Vanderhaegen Evp, Americas And Europe 160,735 0 160,735 2.4% 28 Aug, 2023
12 Ludovic Brellier Evp, Bioscience Medtech 146,566 0 146,566 2.2% 05 May, 2026
13 Steven W Eck Svp Chief Accounting Officer 129,593 0 129,593 1.9% 04 Aug, 2026
14 Michael Wondrasch Evp Cio 96,072 0 96,072 1.4% 22 Feb, 2023
15 Justin Miller Evp General Counsel 93,336 0 93,336 1.4% 19 May, 2023
16 Gerard Brophy Evp, Biopharma Production 89,032 0 89,032 1.3% 19 May, 2023
17 James Bramwell Evp Sales, Customer Excellence 86,605 0 86,605 1.3% 28 Feb, 2025
18 Michael Severino Director 85,821 0 85,821 1.3% 11 May, 2026
19 Gregory L Summe Director 83,381 0 83,381 1.2% 11 May, 2026
20 Thomas A Szlosek Evp Cfo 77,489 0 77,489 1.1% 19 May, 2023
21 Sheri Lewis Evp, Global Ops Supply Chain 70,692 0 70,692 1.0% 03 Jan, 2024
22 Randy Lee Stone Evp, Laboratory Solutions 68,105 0 68,105 1.0% 18 Apr, 2024
23 Juan Andres Director 65,480 0 65,480 1.0% 12 May, 2025
24 Lan Kang Director 52,315 0 52,315 0.8% 12 May, 2025
25 Louise Makin Director 47,140 0 47,140 0.7% 11 May, 2026
26 John Carethers Director 45,858 0 45,858 0.7% 12 May, 2025
27 Kitty Sahin Evp, Strategycorp Development 42,274 0 42,274 0.6% 22 Jul, 2024
28 Meghan Henson Evp, Chief Hr Officer 40,184 0 40,184 0.6% 27 Feb, 2023
29 Sanjeev K Mehra Director 33,376 0 33,376 0.5% 11 May, 2026
30 Simon Dingemans Director 31,495 0 31,495 0.5% 11 May, 2026
31 Mark Christopher Murray Evp, Biomaterials At 18,680 0 18,680 0.3% 18 Jan, 2022
32 Matthew S. Holt Director 7,908 0 7,908 0.1% 16 May, 2022

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

2,278 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
18 Aug, 2026 Emmanuel Ligner President And Ceo Disposed F 29,803 $13.33 $397.27K 737,334 Direct
14 Aug, 2026 Brittany Hankamer Evp, Chief Hr Officer Disposed F 181 $13.66 $2.47K 248,864 Direct
31 Jul, 2026 Steven W Eck Svp Chief Accounting Officer Disposed F 1,385 $13.78 $19.09K 129,593 Direct
24 Jul, 2026 Claudius Sokenu Evp, Chief Legal Compliance Disposed F 1,201 $11.44 $13.74K 251,228 Direct
21 Jun, 2026 Corey Walker President, Vwr Dist. Servs. Disposed F 3,010 $9.58 $28.84K 384,535 Direct
07 May, 2026 Simon Dingemans Director Acquired A 25,270 $0.00 $0 31,495 Direct
07 May, 2026 Louise Makin Director Acquired A 25,270 $0.00 $0 47,140 Direct
07 May, 2026 Michael Severino Director Acquired A 25,270 $0.00 $0 85,821 Direct
07 May, 2026 Sanjeev K Mehra Director Acquired A 25,270 $0.00 $0 33,376 Direct
07 May, 2026 Gregory L Summe Director Acquired A 25,270 $0.00 $0 83,381 Direct
01 May, 2026 Ludovic Brellier Evp, Bioscience Medtech Acquired A 146,566 $0.00 $0 146,566 Direct
01 May, 2026 Ludovic Brellier Evp, Bioscience Medtech Acquired A 246,002 $0.00 $0 246,002 Direct
01 May, 2026 Simon Dingemans Director Acquired P 25,000 $8.14 $203.50K 25,000 Indirect
03 Apr, 2026 Steven W Eck Svp Chief Accounting Officer Acquired A 31,645 $0.00 $0 130,978 Direct
23 Feb, 2026 Benoit Gourdier Evp, Bioscience Medtech Disposed F 3,029 $8.89 $26.93K 362,859 Direct
23 Feb, 2026 Brittany Hankamer Evp, Chief Hr Officer Disposed F 1,324 $8.89 $11.77K 249,404 Direct
23 Feb, 2026 Benoit Gourdier Evp, Bioscience Medtech Disposed F 3,029 $8.89 $26.93K 362,859 Direct
23 Feb, 2026 Benoit Gourdier Evp, Bioscience Medtech Disposed F 3,029 $8.89 $26.93K 362,859 Direct
23 Feb, 2026 Brittany Hankamer Evp, Chief Hr Officer Disposed F 1,324 $8.89 $11.77K 249,404 Direct
23 Feb, 2026 Brittany Hankamer Evp, Chief Hr Officer Disposed F 1,324 $8.89 $11.77K 249,404 Direct