AVANTOR INC

Ticker: AVTR CUSIP: 05352A100 Class: EQTY

SOUTHEASTERN ASSET MANAGEMENT INC/TN/'s Holding History (CIK: 0000807985)

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

Q4 2025
Shares 3,548,518 Value ($000) $40,666 Avg Close $12.31 Range $10.62 - $15.93
Q3 2025
Shares 5,149,420 Value ($000) $64,265 Avg Close $12.88 Range $10.82 - $14.42