AVTR

Avantor, Inc.

Laboratory Analytical InstrumentsNYSELarge accelerated filer

Total Trades

Buys

Sells

Largest Trade

N/A

Insiders

Institutional Funds

349

Inst. Value

$1M+

Activist Filings

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
LUCIER GREGORY T	Director	BUY	$100K–$500K	50K	$9.16	Feb 24, 2026
SUMME GREGORY L	Director	BUY	$500K+	100K	$9.40	Feb 12, 2026
MEHRA SANJEEV K	Director	BUY	$1M+	350K	$11.09	Dec 9, 2025
MEHRA SANJEEV K	Director	GRANT	N/A	8K	—	Dec 9, 2025
Ligner Emmanuel	President and CEO	BUY	$500K+	88K	$11.35	Nov 17, 2025
SUMME GREGORY L	Director	BUY	$1M+	100K	$11.25	Oct 31, 2025
SUMME GREGORY L	Director	BUY	$1M+	100K	$12.56	Aug 22, 2025
SUMME GREGORY L	Director	BUY	$100K–$500K	30K	$12.50	May 27, 2025
SUMME GREGORY L	Director	BUY	$100K–$500K	20K	$12.65	May 22, 2025
SUMME GREGORY L	Director	BUY	$100K–$500K	25K	$12.00	May 9, 2025
Massaro Joseph R	Director	BUY	$50K–$100K	8K	$12.30	Apr 29, 2025
SUMME GREGORY L	Director	BUY	$100K–$500K	25K	$12.50	Apr 29, 2025
Kang Lan	Director	BUY	$50K–$100K	5K	$12.57	Apr 29, 2025
Peacock Jonathan M	Director	BUY	$100K–$500K	8K	$12.81	Apr 29, 2025
Bramwell James	EVP Sales	SELL	$50K–$100K	5K	$17.44	Feb 28, 2025
Eck Steven W	SVP & Chief Accoun…	SELL	$100K–$500K	6K	$17.44	Feb 28, 2025
Couturier Christophe	EVP, AMEA	SELL	$100K–$500K	10K	$27.01	Aug 1, 2024
Bramwell James	EVP Sales	SELL	$100K–$500K	5K	$24.52	Mar 1, 2024
Couturier Christophe	EVP, AMEA	SELL	$100K–$500K	13K	$24.53	Mar 1, 2024
Bramwell James	EVP Sales	GRANT	N/A	21K	—	Feb 27, 2024
Bramwell James	EVP Sales	SELL	$100K–$500K	6K	$24.49	Feb 27, 2024
Eck Steven W	SVP & Chief Accoun…	SELL	$100K–$500K	8K	$20.64	Sep 7, 2023
Vanderhaegen Frederic	EVP	SELL	$500K+	25K	$21.47	Aug 28, 2023
Couturier Christophe	EVP, AMEA	SELL	$15K–$50K	1K	$21.18	Apr 13, 2023
Brophy Gerard	EVP	SELL	$50K–$100K	4K	$25.00	Mar 6, 2023
Brophy Gerard	EVP	SELL	$50K–$100K	3K	$25.00	Mar 1, 2023
Couturier Christophe	EVP, AMEA	SELL	$50K–$100K	2K	$24.32	Mar 1, 2023
Couturier Christophe	EVP, AMEA	SELL	$50K–$100K	3K	$24.24	Feb 28, 2023
Couturier Christophe	EVP, AMEA	GRANT	N/A	9K	—	Feb 28, 2023
Couturier Christophe	EVP, AMEA	SELL	$100K–$500K	19K	$24.12	Feb 22, 2023
Brophy Gerard	EVP	GRANT	N/A	39K	—	Feb 3, 2023
Brophy Gerard	EVP	SELL	$100K–$500K	11K	$25.06	Feb 3, 2023
Szlosek Thomas A	EVP & CFO	BUY	$100K–$500K	13K	$20.71	Nov 17, 2022
Stubblefield Michael	CEO	BUY	$100K–$500K	15K	$20.95	Nov 17, 2022
Brophy Gerard	EVP	SELL	$500K+	20K	$31.27	May 23, 2022
Vanderhaegen Frederic	EVP	SELL	$1M+	39K	$31.61	May 23, 2022
Brophy Gerard	EVP	SELL	$50K–$100K	2K	$34.47	Mar 2, 2022
Brophy Gerard	EVP	SELL	$100K–$500K	3K	$33.79	Feb 26, 2022
Brophy Gerard	EVP	GRANT	N/A	15K	—	Feb 26, 2022
Brophy Gerard	EVP	SELL	$1M+	71K	$40.42	Jan 5, 2022
Brophy Gerard	EVP	EXERCISE	$1M+	59K	$18.45	Jan 5, 2022

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Institutional Ownership

13F filings as of Dec 31, 2025 · 349 funds holding

Fund	Shares	Value	Type
DODGE & COX	117.1M	$1M+	SH
BARROW HANLEY MEWHINNEY & STRAUSS LLC	31.7M	$1M+	SH
GREENHAVEN ASSOCIATES INC	20.5M	$1M+	SH
STATE STREET CORP	20.2M	$1M+	SH
Clarkston Capital Partners, LLC	15.1M	$1M+	SH
DIMENSIONAL FUND ADVISORS LP	13.3M	$1M+	SH
Engine Capital Management, LP	11.9M	$1M+	SH
GEODE CAPITAL MANAGEMENT, LLC	9.6M	$1M+	SH
MANUFACTURERS LIFE INSURANCE COMPANY, THE	8.7M	$1M+	SH
Robeco Schweiz AG	7.3M	$1M+	SH
NORGES BANK	6.4M	$1M+	SH
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	6.2M	$1M+	SH
EARNEST PARTNERS LLC	6.0M	$1M+	SH
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	4.9M	$1M+	SH
Voss Capital, LP	4.1M	$1M+	SH
Assenagon Asset Management S.A.	3.6M	$1M+	SH
Brickwood Asset Management LLP	3.2M	$1M+	SH
Freestone Grove Partners LP	2.6M	$1M+	SH
PRIVATE MANAGEMENT GROUP INC	2.5M	$1M+	SH
TD ASSET MANAGEMENT INC	2.2M	$1M+	SH