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

$5.50M

Total Sells

2 trades

$1.46M

Net Position

Net Buyer

$4.04M

Companies Traded

AVTR, NXPI, STT

Active Period

Feb 2025 – Feb 2026

9 total trades

Most Recent

Buy AVTR

Feb 12, 2026 · $1.88M

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

Buys

7 · $5.50M

Sells

0 · $0.00

Total Shares Bought

500,000

Total Shares Sold

AVTR Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Feb 12, 2026↗	Buy	200,000	$9.40	$1.88M	400,000
Oct 30, 2025↗	Buy	100,000	$11.25	$1.13M	0
Aug 21, 2025↗	Buy	100,000	$12.56	$1.26M	0
May 23, 2025↗	Buy	30,000	$12.50	$375.0K	0
May 22, 2025↗	Buy	20,000	$12.65	$253.0K	0
May 7, 2025↗	Buy	25,000	$12.00	$300.0K	0
Apr 28, 2025↗	Buy	25,000	$12.50	$312.5K	0

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

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

Buys

0 · $0.00

Sells

1 · $79.9K

Total Shares Bought

Total Shares Sold

407

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

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O HANLEY RONALD P

director, officer: Chairman, CEO and President

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RICHARDS MICHAEL L

officer: EVP and Senior Advisor

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Kathryn M Horgan

officer: Executive Vice President

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AMBROSIUS JOERG

officer: Executive Vice President

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Steven W Eck

SVP & Chief Accounting Officer

AVTRSell · Feb 20, 2026

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