SUMME GREGORY L

AVTR

SUMME GREGORY L serves as Director at Avantor, Inc. (AVTR). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

7 trades

$4.56M

Total Sells

3 trades

$3.35M

Net Position

Net Buyer

$1.21M

Companies Traded

AVTR, NXPI, STT

Active Period

Feb 2024 – Feb 2026

10 total trades

Most Recent

Buy AVTR

Feb 12, 2026 · $940.0K

SUMME GREGORY L's Insider Trading at Avantor, Inc. (AVTR)

Buys

7 · $4.56M

Sells

0 · $0.00

Total Shares Bought

400,000

Total Shares Sold

AVTR Price Chart

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Date	Type	Shares	Avg Price	Value
Feb 12, 2026	Buy	100,000	$9.40	$940.0K
Oct 30, 2025	Buy	100,000	$11.25	$1.13M
Aug 21, 2025	Buy	100,000	$12.56	$1.26M
May 23, 2025	Buy	30,000	$12.50	$375.0K
May 22, 2025	Buy	20,000	$12.65	$253.0K
May 7, 2025	Buy	25,000	$12.00	$300.0K
Apr 28, 2025	Buy	25,000	$12.50	$312.5K

SUMME GREGORY L's Insider Trading at NXP Semiconductors N.V. (NXPI)

Buys

0 · $0.00

Sells

2 · $1.97M

Total Shares Bought

Total Shares Sold

8,102

NXPI Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Jun 2, 2025	Sell	407	$196.21	$79.9K	0
Feb 29, 2024	Sell	7,695	$245.27	$1.89M	7,097

SUMME GREGORY L's Insider Trading at State Street Corporation (STT)

Buys

0 · $0.00

Sells

1 · $1.38M

Total Shares Bought

Total Shares Sold

13,815

STT Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Feb 19, 2025	Sell	13,815	$100.00	$1.38M	0

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Christopher L Jensen

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NXPISell · Apr 27, 2026

RICHARDS MICHAEL L

officer: EVP and Senior Advisor

STTSell · Apr 24, 2026

TAHIRI MOSTAPHA

officer: EVP and COO

STTSell · Apr 24, 2026

PLANSKY JOHN

officer: Executive Vice President

STTSell · Mar 12, 2026

MEHRA SANJEEV K

Director

AVTRBuy · Mar 11, 2026

Brian J. Porter

director

STTBuy · Mar 9, 2026

AMBROSIUS JOERG

officer: Executive Vice President

STTSell · Feb 25, 2026

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