<SEC-DOCUMENT>0001354457-20-000104-index.html : 20200228
<SEC-HEADER>0001354457-20-000104.hdr.sgml : 20200228
<ACCEPTANCE-DATETIME>20200228161559
ACCESSION NUMBER:		0001354457-20-000104
CONFORMED SUBMISSION TYPE:	25-NSE
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20200228
DATE AS OF CHANGE:		20200228
EFFECTIVENESS DATE:		20200228

SUBJECT COMPANY:	

	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

	FILING VALUES:
		FORM TYPE:		25-NSE
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-10537
		FILM NUMBER:		20670310

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			The Nasdaq Stock Market LLC
		CENTRAL INDEX KEY:			0001354457
		IRS NUMBER:				521165937
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		25-NSE

	BUSINESS ADDRESS:	
		STREET 1:		One Liberty Plaza
		CITY:			New York
		STATE:			NY
		ZIP:			10006
		BUSINESS PHONE:		301-978-4144

	MAIL ADDRESS:	
		STREET 1:		Office of General Counsel
		STREET 2:		805 King Farm Blvd.
		CITY:			ROCKVILLE
		STATE:			MD
		ZIP:			20850
</SEC-HEADER>
<DOCUMENT>
<TYPE>25-NSE
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.25
<SEQUENCE>2
<FILENAME>form25.txt
<TEXT>
Document 2 - file: form25.txt

</DOCUMENT>
</SEC-DOCUMENT>