<SEC-DOCUMENT>0001415889-21-005626-index.html : 20211202
<SEC-HEADER>0001415889-21-005626.hdr.sgml : 20211202
<ACCEPTANCE-DATETIME>20211202115518
ACCESSION NUMBER:		0001415889-21-005626
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211201
FILED AS OF DATE:		20211202
DATE AS OF CHANGE:		20211202

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Acker Keith
		CENTRAL INDEX KEY:			0001895831

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-10537
		FILM NUMBER:		211465516

	MAIL ADDRESS:	
		STREET 1:		OLD SECOND BANK
		STREET 2:		37 S. RIVER STREET
		CITY:			AURORA
		STATE:			IL
		ZIP:			60506

ISSUER:		

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

	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>3
<SEQUENCE>1
<FILENAME>form3-12022021_081212.xml
<TEXT>
Document 1 - file: form3-12022021_081212.html

Document 1 - RAW XML: form3-12022021_081212.xml

</DOCUMENT>
</SEC-DOCUMENT>