AVANTOR INC

Ticker: AVTR CUSIP: 05352A100 Class: EQTY

Weiss Asset Management LP's Holding History (CIK: 0001357550)

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

Q4 2025

Shares 755,396 Value ($000) $8,657 Avg Close $12.31 Range $10.62 - $15.93

Q3 2025

Shares 550,608 Value ($000) $6,872 Avg Close $12.88 Range $10.82 - $14.42

Q3 2024

Shares 68,342 Value ($000) $1,768 Avg Close $24.55 Range $20.49 - $28.00

Q4 2022

Shares 100,000 Value ($000) $2,109 Avg Close $20.70 Range $17.91 - $23.00

Q2 2022

Shares 48,545 Value ($000) $1,510 Avg Close $31.21 Range $28.64 - $34.37

Q1 2022

Shares 17,979 Value ($000) $608 Avg Close $35.67 Range $31.80 - $41.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	755,396	$8,657	$12.31	$10.62 - $15.93
Q3 2025	550,608	$6,872	$12.88	$10.82 - $14.42
Q3 2024	68,342	$1,768	$24.55	$20.49 - $28.00
Q4 2022	100,000	$2,109	$20.70	$17.91 - $23.00
Q2 2022	48,545	$1,510	$31.21	$28.64 - $34.37
Q1 2022	17,979	$608	$35.67	$31.80 - $41.98