AVANTOR INC

Ticker: AVTR CUSIP: 05352A100 Class: EQTY

Clarkston Capital Partners, LLC's Holding History (CIK: 0001562855)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 15,105,065 Value ($000) $173,104 Avg Close $12.31 Range $10.62 - $15.93

Q3 2025

Shares 15,020,325 Value ($000) $187,454 Avg Close $12.88 Range $10.82 - $14.42

Q2 2025

Shares 13,982,090 Value ($000) $188,199 Avg Close $13.68 Range $11.82 - $16.29

Q1 2025

Shares 9,591,950 Value ($000) $155,486 Avg Close $18.94 Range $15.37 - $23.32

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	15,105,065	$173,104	$12.31	$10.62 - $15.93
Q3 2025	15,020,325	$187,454	$12.88	$10.82 - $14.42
Q2 2025	13,982,090	$188,199	$13.68	$11.82 - $16.29
Q1 2025	9,591,950	$155,486	$18.94	$15.37 - $23.32