Gregory L Summe bought $1.1M of Avantor (AVTR)

Executed Oct 30 2025, disclosed Oct 31 2025, 1 day later.

Value, as filed

$1.1M

100,000 sh × $11.25

Executed

Oct 30 2025

the trade date, as filed

Disclosed

Oct 31 2025

1 day after the trade

Return, 21 sessionsiFrom the disclosed entry session; derived

+7.0%

+3.5% from execution

Over the 21 trading sessions from the disclosed entry session (Oct 31 2025), the stock returned +7.0% (delay-adjusted); from the execution session (Oct 30 2025), +3.5%. Derived: entry at the session's open, exit at the close 20 sessions later.

The filer

GS Gregory L Summe Director profile →

Gregory L Summe (Director) filed 2 Form 4 reports in the trailing twelve months (2 purchases, 0 sales), most often in AVTR. Across 2 priced purchase filings, the average 21-session return was -6.5% from execution and -4.8% from disclosure (delay-adjusted; derived). The largest single filing was $1.1M of AVTR (100,000 sh × $11.25, as filed), executed Oct 30 2025.

The name

AVTR AVTR AVTR · 16 filings in 24 months ticker → Insider filings, newest first→ View the original filing at www.sec.gov→

Other filings by Gregory L Summe in AVTR

AVTRPURCHASE Avantor, Inc. $940K
100,000 sh × $9.40
Exec Feb 12
Filed Feb 12 · 5:24 PM ET AVTRPURCHASE Avantor, Inc. $1.3M
100,000 sh × $12.56
Exec Aug 21 2025
Filed Aug 22 2025 · 4:15 PM ET AVTRPURCHASE Avantor, Inc. $375K
30,000 sh × $12.50
Exec May 23 2025
Filed May 27 2025 · 5:30 PM ET AVTRPURCHASE Avantor, Inc. $253K
20,000 sh × $12.65
Exec May 22 2025
Filed May 22 2025 · 5:30 PM ET AVTRPURCHASE Avantor, Inc. $300K
25,000 sh × $12.00
Exec May 7 2025
Filed May 9 2025 · 5:30 PM ET AVTRPURCHASE Avantor, Inc. $312K
25,000 sh × $12.50
Exec Apr 28 2025
Filed Apr 29 2025 · 5:30 PM ET