AVANTOR INC

Ticker: AVTR CUSIP: 05352A100 Class: EQTY

Optiver Holding B.V.'s Holding History (CIK: 0001859606)

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

Q3 2025

Shares 80 Value ($000) $1 Avg Close $12.88 Range $10.82 - $14.42

Q4 2024

Shares 707 Value ($000) $15 Avg Close $22.49 Range $19.59 - $26.14

Q3 2024

Shares 581 Value ($000) $15 Avg Close $24.55 Range $20.49 - $28.00

Q4 2021

Shares 283 Value ($000) $12 Avg Close $39.41 Range $36.50 - $42.48

Q3 2021

Shares 283 Value ($000) $12 Avg Close $39.07 Range $34.85 - $44.37

Q2 2021

Shares 283 Value ($000) $10 Avg Close $32.34 Range $29.01 - $36.31

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	80	$1	$12.88	$10.82 - $14.42
Q4 2024	707	$15	$22.49	$19.59 - $26.14
Q3 2024	581	$15	$24.55	$20.49 - $28.00
Q4 2021	283	$12	$39.41	$36.50 - $42.48
Q3 2021	283	$12	$39.07	$34.85 - $44.37
Q2 2021	283	$10	$32.34	$29.01 - $36.31