OLD SECOND BANCORP INC ILL

Ticker: OSBC CUSIP: 680277100 Class: Common Stock

River Street Advisors LLC's Holding History (CIK: 0001964897)

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

Q4 2025

Shares 366,071 Value ($000) $7,138 Avg Close $18.60 Range $16.53 - $20.89

Q3 2025

Shares 383,949 Value ($000) $6,637 Avg Close $17.86 Range $16.31 - $19.04

Q1 2025

Shares 292,611 Value ($000) $4,869 Avg Close $17.63 Range $15.91 - $19.18

Q4 2024

Shares 189,149 Value ($000) $3,363 Avg Close $17.06 Range $14.47 - $19.03

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	366,071	$7,138	$18.60	$16.53 - $20.89
Q3 2025	383,949	$6,637	$17.86	$16.31 - $19.04
Q1 2025	292,611	$4,869	$17.63	$15.91 - $19.18
Q4 2024	189,149	$3,363	$17.06	$14.47 - $19.03