AVANTOR INC

Ticker: AVTR CUSIP: 05352A100 Class: EQTY

Engine Capital Management, LP's Holding History (CIK: 0001665590)

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

Q4 2025

Shares 11,927,812 Value ($000) $136,693 Avg Close $12.31 Range $10.62 - $15.93

Q3 2025

Shares 19,720,430 Value ($000) $246,111 Avg Close $12.88 Range $10.82 - $14.42

Q2 2025

Shares 5,504,309 Value ($000) $74,088 Avg Close $13.68 Range $11.82 - $16.29

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	11,927,812	$136,693	$12.31	$10.62 - $15.93
Q3 2025	19,720,430	$246,111	$12.88	$10.82 - $14.42
Q2 2025	5,504,309	$74,088	$13.68	$11.82 - $16.29