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Avantor, Inc.

AVTR
Exchange
NYSE
Industry
Laboratory Analytical Instruments
SEC CIK
0001722482

No open-market purchases or sales by Avantor, Inc. insiders were filed in the last 90 days; 460 institutions reported holding it in 13F filings for Q2 2026, worth $6.93B in total; superinvestors Greenhaven Associates and Southeastern Asset Management (Longleaf) hold it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Avantor, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
0 filings
Insiders trading
0
Net value
$0
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Avantor, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Avantor, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Garner Todd WEVP and CFO49,688Sep 23, 20261
Ligner EmmanuelPresident and CEO737,334Aug 20, 20263
Hankamer BrittanyEVP, Chief HR Officer248,864Aug 18, 20263
Eck Steven WSVP & Chief Accounting Officer129,593Aug 4, 20264
Sokenu ClaudiusEVP, Chief Legal & Compliance251,228Jul 27, 20263
Walker CoreyPresident, VWR Dist. & Servs.384,535Jun 22, 20262
Mehra Sanjeev KDirector33,376May 11, 20263
Summe Gregory LDirector83,381May 11, 20263
Lucier Gregory TDirector60,000IndirectMay 11, 20263
Massaro Joseph RDirector77,408May 11, 20261
Severino MichaelDirector85,821May 11, 20261
Murthy MalaDirector69,479May 11, 20261
Makin LouiseDirector47,140May 11, 20261
Dingemans SimonDirector31,495May 11, 20263
Brellier LudovicEVP, Bioscience & Medtech146,566May 5, 20261
Jones R. BrentEVP, Chief Financial Officer419,782Feb 25, 20262
Gourdier BenoitEVP, Bioscience & Medtech362,859Feb 25, 20263
Blenn MaryEVP, Chief Operating Officer253,384Feb 23, 20262
Couturier ChristopheEVP, AMEA211,271Aug 12, 20250
Stubblefield MichaelPresident & CEO545,500IndirectMay 21, 20250
Peacock Jonathan MDirector219,815May 12, 20250
Andres JuanDirector65,480May 12, 20250
Kang LanDirector52,315May 12, 20250
Carethers JohnDirector45,858May 12, 20250
Bramwell JamesEVP Sales, Customer Excellence86,605Feb 28, 20250
Sahin KittyEVP, Strategy&Corp Development42,274Jul 22, 20240
Stone Randy LeeEVP, Laboratory Solutions68,105Apr 18, 20240
Lewis SheriEVP, Global Ops & Supply Chain70,692Jan 3, 20240
Vanderhaegen FredericEVP, Americas and Europe160,735Aug 28, 20230
Szlosek Thomas AEVP & CFO77,489May 19, 20230
Brophy GerardEVP, Biopharma Production89,032May 19, 20230
Miller JustinEVP & General Counsel93,336May 19, 20230
Shaw ChristiDirector36,271May 15, 20230
Henson MeghanEVP, Chief HR Officer40,184Feb 27, 20230
Wondrasch MichaelEVP & CIO96,072Feb 22, 20230
Holt Matthew S.Director7,908May 16, 20220
Gupta RajivDirector780,562Apr 5, 20220
Murray Mark ChristopherEVP, Biomaterials & AT18,680Jan 18, 20220
Natauri JoDirector557,656IndirectAug 13, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
May 11, 2026 (view filing)May 83 daysLucier Gregory TDirectorPPurchase+10.0K$8.32+$83.2K+20.0%60.0K after
May 5, 2026 (view filing)May 14 daysDingemans SimonDirectorPPurchase+25.0K$8.14+$203.5KNew position25.0K after
Mar 11, 2026 (view filing)Mar 101 dayMehra Sanjeev KDirectorPPurchase+125.0K$8.01+$1.00M+35.7%475.0K after
Feb 23, 2026 (view filing)Feb 194 daysLucier Gregory TDirectorPPurchase+50.0K$9.16+$458.0KNew position50.0K after
Feb 12, 2026 (view filing)Feb 12Same daySumme Gregory LDirectorPPurchase+100.0K$9.40+$940.0K+33.3%400.0K after
Dec 9, 2025 (view filing)Dec 54 daysMehra Sanjeev KDirectorPPurchase+350.0K$11.09+$3.88MNew position350.0K after
Nov 17, 2025 (view filing)Nov 17Same dayLigner EmmanuelPresident and CEOPPurchase+87.5K$11.35+$993.1K+44.7%283.4K after
Oct 31, 2025 (view filing)Oct 301 daySumme Gregory LDirectorPPurchase+100.0K$11.25+$1.13M+50.0%300.0K after
Aug 22, 2025 (view filing)Aug 211 daySumme Gregory LDirectorPPurchase+100.0K$12.56+$1.26M+100.0%200.0K after
Aug 6, 2025 (view filing)Aug 51 dayEck Steven WSVP & Chief Accounting OfficerSSale−3.48K$11.39−$39.6K−5.9%55.1K after10b5-1
May 27, 2025 (view filing)May 234 daysSumme Gregory LDirectorPPurchase+30.0K$12.50+$375.0K+42.9%100.0K after
May 22, 2025 (view filing)May 22Same daySumme Gregory LDirectorPPurchase+20.0K$12.65+$253.0K+40.0%70.0K after
May 9, 2025 (view filing)May 72 daysSumme Gregory LDirectorPPurchase+25.0K$12.00+$300.0K+100.0%50.0K after
Apr 29, 2025 (view filing)Apr 29Same dayMassaro Joseph RDirectorPPurchase+8.10K$12.30+$99.6K+30.1%35.0K after
Apr 29, 2025 (view filing)Apr 281 daySumme Gregory LDirectorPPurchase+25.0K$12.50+$312.5KNew position25.0K after
Apr 29, 2025 (view filing)Apr 281 dayKang LanDirectorPPurchase+5.00K$12.57+$62.9K+16.5%35.2K after
Apr 29, 2025 (view filing)Apr 281 dayPeacock Jonathan MDirectorPPurchase+8.09K$12.81+$103.6K+4.2%202.7K after
Feb 28, 2025 (view filing)Feb 26-272 daysBramwell JamesEVP Sales, Customer ExcellenceSSale−4.53K$17.44−$79.0K−5.0%86.6K after2 lots10b5-1
Feb 28, 2025 (view filing)Feb 26-272 daysEck Steven WSVP & Chief Accounting OfficerSSale−5.94K$17.44−$103.6K−13.1%39.6K after2 lots10b5-1
Sep 6, 2024 (view filing)Sep 51 dayEck Steven WSVP & Chief Accounting OfficerSSale−3.52K$25.06−$88.3K−10.7%29.5K after
Aug 1, 2024 (view filing)Jul 30-312 daysCouturier ChristopheEVP, AMEASSale−10.1K$27.01−$272.8K−12.0%73.9K after2 lots10b5-1
Mar 12, 2024 (view filing)Mar 84 daysEck Steven WSVP & Chief Accounting OfficerSSale−3.69K$25.63−$94.4K−9.7%34.4K after10b5-1
Mar 1, 2024 (view filing)Feb 291 dayBramwell JamesEVP Sales, Customer ExcellenceSSale−4.91K$24.52−$120.4K−4.9%96.2K after
Mar 1, 2024 (view filing)Feb 291 dayCouturier ChristopheEVP, AMEASSale−13.1K$24.53−$320.7K−13.5%83.9K after
Feb 27, 2024 (view filing)Feb 27Same dayBramwell JamesEVP Sales, Customer ExcellenceSSale−6.20K$24.49−$151.9K−5.8%101.1K after
Sep 7, 2023 (view filing)Sep 7Same dayEck Steven WSVP & Chief Accounting OfficerSSale−7.58K$20.64−$156.4K−21.2%28.2K after
Aug 28, 2023 (view filing)Aug 253 daysVanderhaegen FredericEVP, Americas and EuropeSSale−25.0K$21.47−$536.8K−13.5%160.7K after
Apr 13, 2023 (view filing)Apr 112 daysCouturier ChristopheEVP, AMEASSale−1.50K$21.18−$31.7K−1.5%98.7K after10b5-1
Mar 6, 2023 (view filing)Mar 33 daysBrophy GerardEVP, Biopharma ProductionSSale−3.91K$25.00−$97.8K−3.5%108.7K after
Mar 1, 2023 (view filing)Feb 272 daysBrophy GerardEVP, Biopharma ProductionSSale−3.06K$25.00−$76.5K−2.6%112.6K after
Mar 1, 2023 (view filing)Feb 281 dayCouturier ChristopheEVP, AMEASSale−2.32K$24.32−$56.5K−2.3%100.7K after
Feb 27, 2023 (view filing)Feb 234 daysCouturier ChristopheEVP, AMEASSale−3.08K$24.24−$74.6K−3.2%94.4K after
Feb 22, 2023 (view filing)Feb 22Same dayCouturier ChristopheEVP, AMEASSale−19.2K$24.12−$462.1K−16.5%97.2K after
Feb 2, 2023 (view filing)Feb 2Same dayBrophy GerardEVP, Biopharma ProductionSSale−11.3K$25.06−$284.2K−10.0%102.4K after
Nov 17, 2022 (view filing)Nov 161 daySzlosek Thomas AEVP & CFOPPurchase+12.5K$20.71+$258.9K+54.0%35.7K after
Nov 17, 2022 (view filing)Nov 161 dayStubblefield MichaelCEOPPurchase+15.0K$20.95+$314.3K+3.6%429.5K after
May 23, 2022 (view filing)May 203 daysBrophy GerardEVP, Biopharma ProductionSSale−19.6K$31.27−$613.0K−16.8%96.9K after
May 23, 2022 (view filing)May 23Same dayVanderhaegen FredericEVP, Americas & EuropeSSale−39.0K$31.61−$1.23M−23.5%126.8K after
Mar 2, 2022 (view filing)Mar 11 dayBrophy GerardEVP, Biopharma ProductionSSale−2.03K$34.47−$69.9K−1.5%136.2K after
Feb 25, 2022 (view filing)Feb 232 daysBrophy GerardEVP, Biopharma ProductionSSale−3.06K$33.79−$103.4K−2.4%125.2K after
Jan 5, 2022 (view filing)Jan 3-52 daysBrophy GerardEVP, Biopharma ProductionSSale−71.0K$40.42−$2.87M−35.1%131.3K after2 lots
Dec 28, 2021 (view filing)Dec 271 dayCouturier ChristopheEVP, AMEASSale−10.2K$41.63−$424.0K−8.4%110.5K after
Dec 23, 2021 (view filing)Dec 21-222 daysCouturier ChristopheEVP, AMEASSale−66.4K$41.22−$2.74M−37.5%110.5K after2 lots
Dec 10, 2021 (view filing)Dec 8-92 daysCouturier ChristopheEVP, AMEASSale−13.7K$40.14−$549.4K−11.0%110.5K after2 lots
Dec 3, 2021 (view filing)Dec 12 daysGupta RajivDirectorSSale−100.0K$39.30−$3.93M−10.2%879.3K after
Nov 15, 2021 (view filing)Nov 11-124 daysVanderhaegen FredericEVP, EuropeSSale−140.8K$38.32−$5.40M−47.7%154.5K after2 lots
Nov 2, 2021 (view filing)Nov 11 dayGupta RajivDirectorSSale−100.0K$40.31−$4.03M−9.3%979.3K after
Oct 4, 2021 (view filing)Oct 13 daysGupta RajivDirectorSSale−100.0K$39.94−$3.99M−8.5%1.08M after
Sep 22, 2021 (view filing)Sep 202 daysStubblefield MichaelPresident and CEOSSale−141.3K$42.37−$5.99M−10.1%1.26M after
Sep 2, 2021 (view filing)Sep 11 dayGupta RajivDirectorSSale−100.0K$39.45−$3.94M−7.8%1.18M after