<SEC-DOCUMENT>0001104659-25-039223-index.html : 20250425
<SEC-HEADER>0001104659-25-039223.hdr.sgml : 20250425
<ACCEPTANCE-DATETIME>20250425120419
ACCESSION NUMBER:		0001104659-25-039223
CONFORMED SUBMISSION TYPE:	ARS
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20241231
FILED AS OF DATE:		20250425
DATE AS OF CHANGE:		20250425
EFFECTIVENESS DATE:		20250425

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OLD SECOND BANCORP INC
		CENTRAL INDEX KEY:			0000357173
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		ORGANIZATION NAME:           	02 Finance
		EIN:				363143493
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		ARS
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-10537
		FILM NUMBER:		25871269

	BUSINESS ADDRESS:	
		STREET 1:		37 S RIVER ST
		CITY:			AURORA
		STATE:			IL
		ZIP:			60507
		BUSINESS PHONE:		6308920202

	MAIL ADDRESS:	
		STREET 1:		37 SOUTH RIVER STREET
		CITY:			AURORA
		STATE:			IL
		ZIP:			60507
</SEC-HEADER>
<DOCUMENT>
<TYPE>ARS
<SEQUENCE>1
<FILENAME>tm258288d2_ars.pdf
<DESCRIPTION>ARS
<TEXT>
Document 1 - file: tm258288d2_ars.pdf

</DOCUMENT>
</SEC-DOCUMENT>