Gregory L. Summe net worth and biography

Gregory Summe Biography and Net Worth

Director of Avantor

Mr. Summe has served on our Board since May 2020 and is Chair of the Nominating & Governance Committee and a member of the Compensation & Human Resources Committee. Mr. Summe is the Managing Partner of Glen Capital Partners, an investment fund. He also serves on the board of directors of the State Street Corporation and NXP Semiconductors NV. Previously, he was the Managing Director and Vice Chairman of Global Buyout at The Carlyle Group and a Senior Advisor to Goldman Sachs Capital Partners. He also spent 11 years as the Chairman and Chief Executive Officer of PerkinElmer. Before PerkinElmer, Mr. Summe was with AlliedSignal, now Honeywell International, serving as the President of General Aviation Avionics, President of the Aerospace Engines Group and President of the Automotive Products Group. He was also a partner at McKinsey & Co. In the past five years, Mr. Summe served as a director of Virgin Orbit Holdings USA and as co-founder of NextGen Acquisition Corp I & II. Mr. Summe holds an MBA with distinction from The Wharton School of the University of Pennsylvania, a master’s degree in electrical engineering from University of Cincinnati and a bachelor’s degree in electrical engineering from University of Kentucky. He is in the Hall of Distinction at the University of Kentucky.

Mr. Summe’s extensive leadership experience in key industries, including life sciences and applied materials, along with his independence, make him a valuable member of our Board.

What is Gregory L. Summe's net worth?: The estimated net worth of Gregory L. Summe is at least $3.32 million as of October 30th, 2025. Mr. Summe owns 300,000 shares of Avantor stock worth more than $3,322,500 as of December 4th. This net worth evaluation does not reflect any other assets that Mr. Summe may own. Learn More about Gregory L. Summe's net worth.
How do I contact Gregory L. Summe?: The corporate mailing address for Mr. Summe and other Avantor executives is BUILDING ONE SUITE 200 100 MATSONFORD ROAD, RADNOR PA, 19087. Avantor can also be reached via phone at (610) 386-1700 and via email at [email protected]. Learn More on Gregory L. Summe's contact information.
Has Gregory L. Summe been buying or selling shares of Avantor?: In the last ninety days, Gregory L. Summe has bought $1,125,000.00 of Avantor stock. Most recently, on Thursday, October 30th, Gregory L. Summe bought 100,000 shares of Avantor stock. The stock was acquired at an average cost of $11.25 per share, with a total value of $1,125,000.00. Following the completion of the transaction, the director now directly owns 300,000 shares of the company's stock, valued at $3,375,000. Learn More on Gregory L. Summe's trading history.
Who are Avantor's active insiders?: Avantor's insider roster includes James Bramwell (EVP), Gerard Brophy (EVP), Christophe Couturier (EVP), Steven Eck (CAO), Rajiv Gupta (Director), Joseph Massaro (Director), Justin Miller (EVP), Jo Natauri (Director), Devashish Ohri (EVP), Christi Shaw (Director), Michael Stubblefield (President, CEO & Director), Gregory Summe (Director), Thomas Szlosek (CFO), Frederic Vanderhaegen (EVP), and Michael Wondrasch (EVP). Learn More on Avantor's active insiders.
Are insiders buying or selling shares of Avantor?: In the last twelve months, Avantor insiders bought shares 5 times. They purchased a total of 183,100 shares worth more than $2,152,630.00. In the last twelve months, insiders at the sold shares 3 times. They sold a total of 12,141 shares worth more than $191,489.09. The most recent insider tranaction occured on October, 30th when Director Gregory L Summe bought 100,000 shares worth more than $1,125,000.00. Insiders at Avantor own 1.2% of the company. Learn More about insider trades at Avantor.
Information on this page was last updated on 10/30/2025.

Gregory L. Summe Insider Trading History at Avantor

Transaction Date	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
10/30/2025	Buy	100,000	$11.25	$1,125,000.00	300,000
5/23/2025	Buy	30,000	$12.50	$375,000.00	100,000
5/22/2025	Buy	20,000	$12.65	$253,000.00	70,000
5/7/2025	Buy	25,000	$12.00	$300,000.00	50,000

Gregory L. Summe Buying and Selling Activity at Avantor

Avantor Company Overview

Avantor, Inc. engages in the provision of mission-critical products and services to customers in the biopharma, healthcare, education and government, advanced technologies, and applied materials industries in the Americas, Europe, Asia, the Middle East, and Africa. The company offers materials and consumables, such as purity chemicals and reagents, lab products and supplies, formulated silicone materials, customized excipients, customized single-use assemblies, process chromatography resins and columns, analytical sample prep kits, education and microbiology products, clinical trial kits, peristaltic pumps, and fluid handling tips. It also provides equipment and instrumentation products, including filtration systems, virus inactivation systems, incubators, analytical instruments, evaporators, ultra-low-temperature freezers, biological safety cabinets, and critical environment supplies. In addition, the company offers services and specialty procurements comprising onsite lab and production, clinical, equipment, procurement and sourcing, and biopharmaceutical material scale-up and development services. Further, it provides scientific research support services, such as DNA extraction, bioreactor servicing, clinical and biorepository, and compound management services. The company was founded in 1904 and is headquartered in Radnor, Pennsylvania.

Today's Range

Now: $11.14

$10.97

$11.33

50 Day Range

MA: $12.68

$10.89

$15.61

2 Week Range

Now: $11.14

$10.82

$23.32

Volume

8,739,006 shs

Average Volume

7,631,528 shs

Market Capitalization

$7.59 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

0.93