OLD SECOND BANCORP INC ILL

Ticker: OSBC CUSIP: 680277100 Class: Common Stock

ADAGE CAPITAL PARTNERS GP, L.L.C.'s Holding History (CIK: 0001165408)

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

Q4 2025

Shares 243,192 Value ($000) $4,742 Avg Close $18.60 Range $16.53 - $20.89

Q1 2025

Shares 100,000 Value ($000) $1,664 Avg Close $17.63 Range $15.91 - $19.18

Q4 2024

Shares 69,987 Value ($000) $1,244 Avg Close $17.06 Range $14.47 - $19.03

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	243,192	$4,742	$18.60	$16.53 - $20.89
Q1 2025	100,000	$1,664	$17.63	$15.91 - $19.18
Q4 2024	69,987	$1,244	$17.06	$14.47 - $19.03