OLD SECOND BANCORP INC ILL

Ticker: OSBC CUSIP: 680277100 Class: Common Stock

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

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

Q4 2025

Shares 82 Value ($000) $2 Avg Close $18.60 Range $16.53 - $20.89

Q3 2025

Shares 226 Value ($000) $4 Avg Close $17.86 Range $16.31 - $19.04

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	82	$2	$18.60	$16.53 - $20.89
Q3 2025	226	$4	$17.86	$16.31 - $19.04