Are insiders buying or selling Avantor, Inc. stock?

Based on the last 50 SEC Form 4 filings, Avantor, Inc. insiders made 4 open-market purchases and 0 open-market sales.

Where can I see Avantor, Inc. insider trading activity?

SEC Form 4 filings for Avantor, Inc. (AVTR) are publicly available on EDGAR and aggregated at form4api.com/companies/avtr.

Company profile

Avantor, Inc. Insider Trading

Name: Avantor, Inc. Insider Trading Data
Creator: Form4API
License: https://www.sec.gov/privacy.htm

AVTR

Every SEC Form 4 insider trading filing for Avantor, Inc. (AVTR) since April 2023: open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?

Exchange: NYSE
Sector: Laboratory Analytical Instruments
CIK: 0001722482
Filings: 161
Insiders: 33
Last filing: 2026-09-21

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Activity summary

No discretionary insider buying or selling in the last 30 days. The 2 transactions filed were grants, option exercises or other non-open-market activity.

Three year balance

Buy and sell value by quarter, Q4 23 to Q3 26. Avantor, Inc. insiders are net buyers across the period shown.

PurchasesSales

Bars below the rule are sales, above are purchases. Largest quarter on the chart is $6.0M.

90 day insight

Over the last 90 days, Avantor, Inc. insiders filed 6 Form 4 transactions, none of which were open-market purchases or sales.

Most active insider: Todd W Garner with 2 transactions totaling $0.

Activity skews bullish: buys outpace sales.

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

Date	Insider	Company	Type	Shares	Price	Value	Return
Sep 21, 2026	Todd W Garner	AVTR	Award	49,688	—	—	Pending
Sep 21, 2026	Todd W Garner	AVTR	Award	138,632	—	—	Pending
Aug 18, 2026	Emmanuel Ligner	AVTR	Tax Withholding	29,803	$13.33	$397K	+7.1% 1m
Aug 14, 2026	Brittany Hankamer	AVTR	Tax Withholding	181	$13.66	$2K	+18.7% 1m
Jul 31, 2026	Steven W Eck	AVTR	Tax Withholding	1,385	$13.78	$19K	+7.1% 1m

45 more transactions hidden

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Top insiders

By open-market value traded.

Sanjeev K MehraDirector1 filing+$1.0M

Gregory T LucierDirector2 filings+$541K

Simon DingemansDirector1 filing+$204K

Institutional Ownership

Top 13F-HR holders of Avantor, Inc. as of 2026-06-30

↓ decreasing

Total reported AUM

$1.58B

QoQ change

-67.6%

Reporting period

2026-06-30

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Data source: quarterly 13F-HR filings: institutional holders report positions within 45 days of quarter end. Joined with insider activity above: see who's loading up institutionally while insiders are trading. Full 13F-HR API →