Avantor, Inc. (AVTR) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-06-22

Avantor, Inc. (AVTR) has filed 11 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-22. 3 Form 8-K material event filings were reported by AVTR in the last 90 days. InsiderAlpha tracks every AVTR SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Avantor, Inc. (AVTR)

SIC classification	Laboratory Analytical Instruments (SIC 3826)
SEC CIK	0001722482

90-Day SEC Filing Activity

Form 4 filings (90d)	11
Form 8-K filings (90d)	3
Latest Form 4 filing	2026-06-22

Recent AVTR Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2026-06-21	Walker Corey	President, VWR Dist. & Servs.	F — Tax withholding / forfeiture	3.0K	$9.58	$29K	SEC
2026-05-08	LUCIER GREGORY T	Director	P — Open-market purchase	10.0K	$8.32	$83K	SEC
2026-05-07	LUCIER GREGORY T	Director	A — Grant or award	25.3K	$0.00	—	SEC
2026-05-07	SUMME GREGORY L	Director	A — Grant or award	25.3K	$0.00	—	SEC
2026-05-07	Murthy Mala	Director	A — Grant or award	25.3K	$0.00	—	SEC
2026-05-07	SEVERINO MICHAEL	Director	A — Grant or award	25.3K	$0.00	—	SEC
2026-05-07	Dingemans Simon	Director	A — Grant or award	25.3K	$0.00	—	SEC
2026-05-07	Makin Louise	Director	A — Grant or award	25.3K	$0.00	—	SEC
2026-05-07	MEHRA SANJEEV K	Director	A — Grant or award	25.3K	$0.00	—	SEC
2026-05-07	Massaro Joseph R	Director	A — Grant or award	25.3K	$0.00	—	SEC
2026-05-01	Brellier Ludovic	EVP, Bioscience & Medtech	A — Grant or award	146.6K	$0.00	—	SEC
2026-05-01	Dingemans Simon	Director	P — Open-market purchase	25.0K	$8.14	$204K	SEC
2026-04-03	Eck Steven W	SVP & Chief Accounting Officer	A — Grant or award	31.6K	$0.00	—	SEC
2026-03-10	MEHRA SANJEEV K	Director	P — Open-market purchase	125.0K	$8.01	$1.00M	SEC
2026-02-24	Eck Steven W	SVP & Chief Accounting Officer	F — Tax withholding / forfeiture	452	$9.11	$4K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Avantor, Inc. (AVTR). Updated in real time as new filings are submitted to the SEC.

Most-Active AVTR Insiders — Last 90 Days

Insider	Form 4 filings	Total transaction value
LUCIER GREGORY T	2	$83K
Brellier Ludovic	2	—
Dingemans Simon	2	$204K
Makin Louise	1	—
SUMME GREGORY L	1	—

Recent AVTR Form 8-K Material Events

2026-05-12 — Item 5.07, 9.01 [SEC]
2026-04-29 — Item 2.02, 9.01 [SEC]
2026-04-23 — Item 5.02, 7.01, 9.01 · Leadership · neutral [SEC]
Avantor announced the appointment of Ludovic Brellier as Executive Vice President, Bioscience and Medtech Products and Chief Transformation Officer, effective May 1, 2026. The company simultaneously announced that Benoit Gourdier, the current EVP in that role, will transition to
2026-04-01 — Item 5.02, 7.01, 9.01 · Leadership · negative [SEC]
CFO R. Brent Jones resigned effective March 26, 2026, to join a company outside the life sciences industry. Steven Eck, the Senior Vice President and Chief Accounting Officer, will assume the interim CFO role while the company conducts a search for a permanent CFO.
2026-02-25 — Item 5.02, 9.01 · Leadership · neutral [SEC]
Avantor filed an amended 8-K/A to disclose that newly elected director Simon Dingemans was appointed to the Audit & Finance Committee effective February 19, 2026. This is a routine administrative amendment to a previously announced director election from December 17, 2025, provid

Recent Insider Filings

2026-06-22 — Walker Corey (President, VWR Dist. & Servs.)
2026-05-11 — Murthy Mala (Director)
2026-05-11 — LUCIER GREGORY T (Director)
2026-05-11 — Dingemans Simon (Director)
2026-05-11 — Makin Louise (Director)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in AVTR insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

AVTR Insider Trading — FAQ

What is the latest insider trade for AVTR?: Avantor, Inc. (AVTR) had 11 insider filings in the last 90 days, with the most recent on 2026-06-22. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying AVTR stock?: 0 insider purchases of AVTR were filed in the last 90 days.
How many insiders are selling AVTR stock?: 0 insider sales of AVTR were filed in the last 90 days.
Where can I see AVTR SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every AVTR SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

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