Home > Insider Trading > Latest 13D and 13G Filings > 13G Filing (0001171520-24-000096)

Filing Details

Accession Number:: 0001171520-24-000096
Form Type:: 13G Filing
Publication Date:: 2024-02-07 19:00:00

Filed By:: Fj Capital Management Llc
Company:: Old Second Bancorp Inc (NASDAQ:OSBC)
Filing Date:: 2024-02-08
SEC Url:: 13G Filing

Ownership Summary

Please notice the below summary table is generated without human intervention and may contain errors. Please refer to the complete filing displayed below for exact figures.

Name	Shared Voting Power	Shared Dispositive Power	Aggregate Amount Owned Power	Percent of Class
FJ Capital Management	2,647,725	2,370,704	2,647,725	5.92%
Financial Opportunity Fund	2,212,987	2,212,987	2,212,987	4.95%
Financial Opportunity Long Short Fund	68,087	68,087	68,087	0.15%
Martin Friedman	2,647,725	2,370,704	2,647,725	5.92%
Bridge Equities XI	108,047	108,047	108,047	0.24%
Bridge Equities XIV	168,974	168,974	168,974	0.38%
SunBridge Manager	277,021	277,021	277,021	0.62%
SunBridge Holdings	277,021	277,021	277,021	0.62%
White Oak Enterprises, Inc	277,021	277,021	277,021	0.62%

Filing

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 4) *

Old Second Bancorp, Inc. (OSBC)

(Name of Issuer)

Common Stock

(Title of Class of Securities)

680277100

(CUSIP Number)

12/31/2023

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

	☐	Rule 13d-1(b)

	☑	Rule 13d-1(c)

	☐	Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No.

680277100

Page 2 of 17

1	NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)			FJ Capital Management LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) ☑ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION			Delaware
NUMBER OF SHARES		5	SOLE VOTING POWER
BENEFICIALLY OWNED BY		6	SHARED VOTING POWER	2,647,725 (1)
EACH REPORTING		7	SOLE DISPOSITIVE POWER
PERSON WITH:		8	SHARED DISPOSITIVE POWER	2,370,704 (2)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON			2,647,725 (1)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES			☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9			5.92%
12	TYPE OF REPORTING PERSON			IA

(1)

Consists of 2,212,987 shares of common stock of the Issuer held by Financial Opportunity Fund LLC, 68,087 shares of common stock of the Issuer held by Financial Opportunity Long/Short Fund LLC, of which FJ Capital Management LLC is the managing member, 108,047 shares of common stock of the Issuer held by Bridge Equities XI, LLC and 168,974 shares of common stock of the Issuer held by Bridge Equities XIV LLC, of which FJ Capital Management LLC is the sub-investment advisor, and 89,630 shares of common stock of the Issuer held by managed accounts that FJ Capital Management manages; as such, the Reporting Person may be deemed to be a beneficial owner of reported shares but as to which the Reporting Person disclaims beneficial ownership.

(2)

CUSIP No.

680277100

Page 3 of 17

1	NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)			Financial Opportunity Fund LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) ☑ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION			Delaware
NUMBER OF SHARES		5	SOLE VOTING POWER
BENEFICIALLY OWNED BY		6	SHARED VOTING POWER	2,212,987 (1)
EACH REPORTING		7	SOLE DISPOSITIVE POWER
PERSON WITH:		8	SHARED DISPOSITIVE POWER	2,212,987 (1)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON			2,212,987 (1)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES			☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9			4.95%
12	TYPE OF REPORTING PERSON			OO

(1)

Consists of 2,212,987 shares of common stock of the Issuer held by Financial Opportunity Fund, LLC.

CUSIP No.

680277100

Page 4 of 17

1	NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)			Financial Opportunity Long/Short Fund LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) ☑ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION			Delaware
NUMBER OF SHARES		5	SOLE VOTING POWER
BENEFICIALLY OWNED BY		6	SHARED VOTING POWER	68,087 (1)
EACH REPORTING		7	SOLE DISPOSITIVE POWER
PERSON WITH:		8	SHARED DISPOSITIVE POWER	68,087 (1)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON			68,087 (1)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES			☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9			0.15%
12	TYPE OF REPORTING PERSON			OO

(1)

Consists of 68,087 shares of common stock of the Issuer held by Financial Opportunity Long/Short Fund, LLC.

CUSIP No.

680277100

Page 5 of 17

1	NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)			Martin Friedman
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) ☑ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION			United States
NUMBER OF SHARES		5	SOLE VOTING POWER
BENEFICIALLY OWNED BY		6	SHARED VOTING POWER	2,647,725 (1)
EACH REPORTING		7	SOLE DISPOSITIVE POWER
PERSON WITH:		8	SHARED DISPOSITIVE POWER	2,370,704 (2)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON			2,647,725 (1)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES			☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9			5.92%
12	TYPE OF REPORTING PERSON			IN

(1)

Consists of 2,212,987 shares of common stock of the Issuer held by Financial Opportunity Fund LLC, 68,087 shares of common stock of the Issuer held by Financial Opportunity Long/Short Fund LLC, of which FJ Capital Management LLC is the managing member, 108,047 shares of common stock of the Issuer held by Bridge Equities XI, LLC and 168,974 shares of common stock of the Issuer held by Bridge Equities XIV LLC, of which FJ Capital Management LLC is the sub-investment advisor, and 89,630 shares of common stock of the Issuer held by managed accounts that FJ Capital Management manage. Martin Friedman is the managing member of FJ Capital Management; as such, Mr. Friedman may be deemed to be a beneficial owner of reported shares but as to which Mr. Friedman disclaims beneficial ownership.

(2)

Consists of 2,212,987 shares of common stock of the Issuer held by Financial Opportunity Fund LLC, 68,087 shares of common stock of the Issuer held by Financial Opportunity Long/Short Fund LLC, of which FJ Capital Management LLC is the managing member, and 89,630 shares of common stock of the Issuer held by managed accounts that FJ Capital Management manages. Martin Friedman is the Managing Member of FJ Capital Management LLC; as such, Mr. Friedman may be deemed to be a beneficial owner of reported shares but as to which Mr. Friedman disclaims beneficial ownership.

CUSIP No.

680277100

Page 6 of 17

1	NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)			Bridge Equities XI, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) ☑ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION			Delaware
NUMBER OF SHARES		5	SOLE VOTING POWER
BENEFICIALLY OWNED BY		6	SHARED VOTING POWER	108,047 (1)
EACH REPORTING		7	SOLE DISPOSITIVE POWER
PERSON WITH:		8	SHARED DISPOSITIVE POWER	108,047 (1)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON			108,047 (1)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES			☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9			0.24%
12	TYPE OF REPORTING PERSON			OO

(1)

Consists of 108,047 shares of common stock of the Issuer held by Bridge Equities XI, LLC.

CUSIP No.

680277100

Page 7 of 17

1	NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)			Bridge Equities XIV, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) ☑ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION			Delaware
NUMBER OF SHARES		5	SOLE VOTING POWER
BENEFICIALLY OWNED BY		6	SHARED VOTING POWER	168,974 (1)
EACH REPORTING		7	SOLE DISPOSITIVE POWER
PERSON WITH:		8	SHARED DISPOSITIVE POWER	168,974 (1)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON			168,974 (1)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES			☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9			0.38%
12	TYPE OF REPORTING PERSON			OO

(1)

Consists of 168,974 shares of common stock of the Issuer held by Bridge Equities XIV, LLC.

CUSIP No.

680277100

Page 8 of 17

1	NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)			SunBridge Manager, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) ☑ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION			Delaware
NUMBER OF SHARES		5	SOLE VOTING POWER
BENEFICIALLY OWNED BY		6	SHARED VOTING POWER	277,021 (1)
EACH REPORTING		7	SOLE DISPOSITIVE POWER
PERSON WITH:		8	SHARED DISPOSITIVE POWER	277,021 (1)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON			277,021 (1)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES			☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9			0.62%
12	TYPE OF REPORTING PERSON			OO

(1)

CUSIP No.

680277100

Page 9 of 17

1	NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)			SunBridge Holdings, LLC
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) ☑ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION			Delaware
NUMBER OF SHARES		5	SOLE VOTING POWER
BENEFICIALLY OWNED BY		6	SHARED VOTING POWER	277,021 (1)
EACH REPORTING		7	SOLE DISPOSITIVE POWER
PERSON WITH:		8	SHARED DISPOSITIVE POWER	277,021 (1)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON			277,021 (1)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES			☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9			0.62%
12	TYPE OF REPORTING PERSON			OO

(1)

Consists of 108,047 shares common stock of the Issuer held by Bridge Equities XI, LLC, and 168,974 shares common stock of the Issuer held by Bridge Equities XIV, LLC of which SunBridge Manager, LLC is the Managing Member. SunBridge Holdings, LLC is the Managing Member of SunBridge Manager, LLC; as such, the Reporting Person may be deemed to be a beneficial owner of reported shares, but as to which the Reporting Person disclaims beneficial ownership.

CUSIP No.

680277100

Page 10 of 17

1	NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)			White Oak Enterprises, Inc.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) ☑ (b) ☐
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION			Maryland
NUMBER OF SHARES		5	SOLE VOTING POWER
BENEFICIALLY OWNED BY		6	SHARED VOTING POWER	277,021 (1)
EACH REPORTING		7	SOLE DISPOSITIVE POWER
PERSON WITH:		8	SHARED DISPOSITIVE POWER	277,021 (1)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON			277,021 (1)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES CERTAIN SHARES			☐
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9			0.62%
12	TYPE OF REPORTING PERSON			CO

(1)

Consists of 108,047 shares common stock of the Issuer held by Bridge Equities XI, LLC, and 168,974 shares common stock of the Issuer held by Bridge Equities XIV, LLC of which SunBridge Manager, LLC is the Managing Member. SunBridge Holdings, LLC is the Managing Member of SunBridge Manager, LLC. White Oak Enterprises, Inc. is the Manager of SunBridge Holdings, LLC; as such, the Reporting Person may be deemed to be a beneficial owner of reported shares but as to which the Reporting Person disclaims beneficial ownership.

CUSIP No.

680277100

Page 11 of 17

Item 1(a).		Name of Issuer:

		Old Second Bancorp, Inc. (OSBC)

Item 1(b).		Address of Issuer’s Principal Executive Offices:

		37 South River Street
		Aurora, IL 60507

Item 2(a).		Name of Person Filing:

		This Schedule 13G is being filed on behalf of the following Reporting Persons: FJ Capital Management LLC Financial Opportunity Fund LLC Financial Opportunity Long/Short Fund LLC Martin Friedman Bridge Equities XI, LLC Bridge Equities XIV, LLC SunBridge Manager, LLC SunBridge Holdings, LLC White Oak Enterprises, Inc.

Item 2(b).		Address of Principal Business Office or, if None, Residence:

		FJ Capital Management, LLC 7901 Jones Branch Drive, Suite 210 McLean, VA 22102 Financial Opportunity Fund LLC 7901 Jones Branch Drive, Suite 210 McLean, VA 22102 Financial Opportunity Long/Short Fund LLC 7901 Jones Branch Drive, Suite 210 McLean, VA 22102 Martin Friedman 7901 Jones Branch Drive, Suite 210 McLean, VA 22102 Bridge Equities XI, LLC 8171 Maple Lawn Blvd, Suite 375 Fulton, MD 20759 Bridge Equities XIV, LLC 8171 Maple Lawn Blvd, Suite 375 Fulton, MD 20759 SunBridge Manager LLC 8171 Maple Lawn Blvd, Suite 375 Fulton, MD 20759

CUSIP No.

680277100

Page 12 of 17

SunBridge Holdings LLC
8171 Maple Lawn Blvd, Suite 375
Fulton, MD 20759

White Oak Enterprises, Inc.
8171 Maple Lawn Blvd, Suite 375
Fulton, MD 20759

Item 2(c).		Citizenship:

		FJ Capital Management LLC, Financial Opportunity Fund LLC, Financial Opportunity Long/Short Fund LLC, Bridge Equities XI, LLC, Bridge Equities XIV, LLC, SunBridge Manager, LLC, and SunBridge Holdings, LLC – Delaware limited liability companies Martin Friedman – United States citizen White Oak Enterprises, Inc. – Maryland corporation

Item 2(d).		Title of Class of Securities:

		Common Stock

Item 2(e).		CUSIP Number:

		680277100

Item 3.	If This Statement is Filed Pursuant to §§240.13d-1(b), or 240.13d-2(b) or (c), Check Whether the Person Filing is a:

(a)	☐	Broker or dealer registered under Section 15 of the Act (15 U.S.C. 78o).

(b)	☐	Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c).

(c)	☐	Insurance company as defined in Section 3(a)(19) of the Act (15 U.S.C. 78c).

(d)	☐	Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e)	☐	An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)	☐	An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)	☐	A parent holding company or control person in accordance with §240.13d-1(b)(ii)(G);

(h)	☐	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)	☐	A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act (15 U.S.C. 80a-3);

(j)	☐	Group, in accordance with §240.13d-1(b)(1)(ii)(J).

CUSIP No.

680277100

Page 13 of 17

Item 4.	Ownership.

	Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)	Amount beneficially owned:

	FJ Capital Management LLC – 2,647,725 shares Financial Opportunity Fund LLC – 2,212,987 shares Financial Opportunity Long/ShortFund LLC – 68,087 shares Martin Friedman – 2,647,725 shares Bridge Equities XI, LLC – 108,047 shares Bridge Equities XIV, LLC – 168,974 shares SunBridge Manager, LLC – 277,021 shares SunBridge Holdings, LLC - 277,021 shares White Oak Enterprises, Inc. – 277,021shares

(b)	Percent of class:

	FJ Capital Management LLC – 5.92% Financial Opportunity Fund LLC – 4.95% Financial Opportunity Long/Short Fund LLC – 0.15% Martin Friedman – 5.92% Bridge Equities XI, LLC – 0.24% Bridge Equities XIV, LLC – 0.38% SunBridge Manager, LLC – 0.62% SunBridge Holdings, LLC – 0.62% White Oak Enterprises, Inc. – 0.62%

(c)	Number of shares as to which such person has:

	(i)	Sole power to vote or to direct the vote

		All Reporting Persons - 0

	(ii)	Shared power to vote or to direct the vote

		FJ Capital Management LLC – 2,647,725 shares Financial Opportunity Fund LLC – 2,212,987 shares Financial Opportunity Long/ShortFund LLC – 68,087 shares Martin Friedman – 2,647,725 shares Bridge Equities XI, LLC – 108,047 shares Bridge Equities XIV, LLC – 168,974 shares SunBridge Manager, LLC – 277,021 shares SunBridge Holdings, LLC - 277,021 shares White Oak Enterprises, Inc. – 277,021shares

CUSIP No.	680277100			Page 14 of 17

		(iii)	Sole power to dispose or to direct the disposition of

			All Reporting Persons – 0

		(iv)	Shared power to dispose or to direct the disposition of

			FJ Capital Management LLC – 2,370,704 shares Financial Opportunity Fund LLC – 2,212,987 shares Financial Opportunity Long/ShortFund LLC – 68,087 shares Martin Friedman – 2,370,704 shares Bridge Equities XI, LLC – 108,047 shares Bridge Equities XIV, LLC – 168,974 shares SunBridge Manager, LLC – 277,021 shares SunBridge Holdings, LLC - 277,021 shares White Oak Enterprises, Inc. – 277,021shares

Item 5.	Ownership of Five Percent or Less of a Class.
	If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following ☐

Item 6.	Ownership of More than Five Percent on Behalf of Another Person.

	N/A.

Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

	N/A

Item 8.	Identification and Classification of Members of the Group.

	Due to the relationships among them, the reporting persons hereunder may be deemed to constitute a “group” with one another for purposes of Section 13(d)(3) of the Securities Exchange Act of 1934.

Item 9.	Notice of Dissolution of Group.

	N/A

Item 10.	Certification.

	By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having such purpose or effect.

CUSIP No.

680277100

Page 15 of 17

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: 1/11/2024

Financial Opportunity Fund LLC

By: FJ Capital Management LLC, its Managing Member

By: /s/ Martin Friedman

Name: Martin Friedman

Title: Managing Member

Financial Opportunity Long/Short Fund LLC

By: FJ Capital Management LLC, its Managing Member

By: /s/ Martin Friedman

Name: Martin Friedman

Title: Managing Member

FJ Capital Management LLC

By: /s/ Martin Friedman

Name: Martin Friedman

Title: Managing Member

/s/ Martin Friedman

MARTIN FRIEDMAN

CUSIP No.

680277100

Page 16 of 17

Bridge Equities XI, LLC

By: SunBridge Manager, LLC, its Managing Member

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President

Bridge Equities XIV, LLC

By: SunBridge Manager, LLC, its Managing Member

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President

SunBridge Manager, LLC

By: SunBridge Holdings, LLC, its Managing Member

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President

SunBridge Holdings, LLC

By: White Oak Enterprises, Inc., its Manager

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President

White oak enterprises, inc.

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President

CUSIP No.

680277100

Page 17 of 17

Joint Filing Agreement

The undersigned agree that this Schedule 13G, and all amendments thereto, relating to the Common Stock Old Second Bancorp, Inc. (OSBC) shall be filed on behalf of the undersigned.

FINANCIAL OPPORTUNITY FUND LLC

By: FJ Capital Management, LLC

By: /s/ Martin Friedman

Name: Martin Friedman

Title: Managing Member

FINANCIAL OPPORTUNITY LONG/SHORT
FUND LLC

By: FJ Capital Management, LLC

By: /s/ Martin Friedman

Name: Martin Friedman

Title: Managing Member

FJ CAPITAL MANAGEMENT LLC

By: /s/ Martin Friedman

Name: Martin Friedman

Title: Managing Member

/s/ Martin Friedman

MARTIN FRIEDMAN

BRIDGE EQUITIES XI, LLC

By: SunBridge Manager, LLC, its Managing Member

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President

BRIDGE EQUITIES XIV, LLC

By: SunBridge Manager, LLC, its Managing Member

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President

SUNBRIDGE MANAGER, LLC

By: SunBridge Holdings, LLC, its Managing Member

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President

SUNBRIDGE HOLDINGS, LLC

By: White Oak Enterprises, Inc., its Manager

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President

WHITE OAK ENTERPRISES, INC.

By: /s/ David J. Korotkin

Name: David J. Korotkin

Title: Vice President