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AVTR - Avantor, Inc.

Insider Purchase by Summe Gregory L (Dir)

1 Month
After Trade
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Trade Summary

1 week ago, Summe Gregory L, serving as Dir at Avantor, Inc. (AVTR), purchased 100,000 shares at $9.40 per share, for a total transaction value of $940,000.00. Following this transaction, Summe Gregory L now holds 458,111 shares of AVTR.

This purchase represents a 28.00% increase in Summe Gregory L's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Thursday, February 12, 2026 and publicly disclosed via SEC Form 4 filing on Thursday, February 12, 2026, meaning the disclosure happened on the same day as the trade.

Avantor, Inc. operates in the HEALTHCARE sector, specifically within the MEDICAL INSTRUMENTS & SUPPLIES industry. Insider buying activity in this sector can provide valuable signals about industry trends and company-specific developments.

Summe Gregory L

Dir

Gregory L. Summe (born 1956) is an American business executive and investor serving as an independent Director on the board of Avantor, Inc. (AVTR) since May 2020, where he chairs the Nomination & Governance Committee.[[1]](https://grail.com/stories/member/gregory-greg-summe/)[[2]](https://glencapital.com/pdfs/Gregory%20L%20Summe.pdf)[[4]](https://starmountaincapital.com/senior-team/gregory-l-summe/) He is the Founder and Managing Partner of Glen Capital Partners LLC, a value-oriented hedge fund, since June 2014.[[1]](https://grail.com/stories/member/gregory-greg-summe/)[[2]](https://glencapital.com/pdfs/Gregory%20L%20Summe.pdf) Summe's career spans over 30 years in leadership roles, including Managing Director and Vice Chairman of Global Buyout at The Carlyle Group (2009-2014), Chairman, CEO, and President of PerkinElmer, Inc. (1998-2009)—where he transformed the company from a defense contractor to a global leader in health sciences with shareholder returns triple the S&P 500—and executive positions at AlliedSignal (now Honeywell), General Electric, and as a Partner at McKinsey & Company.[[1]](https://grail.com/stories/member/gregory-greg-summe/)[[2]](https://glencapital.com/pdfs/Gregory%20L%20Summe.pdf)[[3]](https://fintool.com/app/research/companies/NXPI/people/gregory-summe)[[4]](https://starmountaincapital.com/senior-team/gregory-l-summe/) Summe holds a B.S. and M.S. in Electrical Engineering from the University of Kentucky and University of Cincinnati, respectively, and an M.B.A. from the Wharton School with distinction.[[1]](https://grail.com/stories/member/gregory-greg-summe/)[[3]](https://fintool.com/app/research/companies/NXPI/people/gregory-summe) He currently serves on boards including NXP Semiconductors N.V. (Chair, Compensation Committee), State Street Corporation, Grail, Inc. (Chair), Wheels Up Experience Inc., and Pella Corporation, and is a Senior Advisor at Star Mountain Capital.[[1]](https://grail.com/stories/member/gregory-greg-summe/)[[3]](https://fintool.com/app/research/companies/NXPI/people/gregory-summe)[[4]](https://starmountaincapital.com/senior-team/gregory-l-summe/)[[5]](https://www.worldwildlife.org/about/profiles/gregory-l-summe/) Previously, he was on boards of Virgin Orbit Holdings and NextGen Acquisition Corps.[[1]](https://grail.com/stories/member/gregory-greg-summe/)[[3]](https://fintool.com/app/research/companies/NXPI/people/gregory-summe)

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Trade Price

$9.40

Quantity

100,000

Total Value

$940,000.00

Shares Owned

458,111

Trade Date

Thursday, February 12, 2026

10 days ago

SEC Filing Date

Thursday, February 12, 2026

HEALTHCAREMEDICAL INSTRUMENTS & SUPPLIES

About Avantor, Inc.

Company Overview

No company information available
View news mentioning AVTR

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