FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * PALMER GERALD   2. Issuer Name and Ticker or Trading Symbol OLD SECOND BANCORP INC [OSBC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 37 S. RIVER ST. 3. Date of Earliest Transaction (Month/Day/Year) 10/26/2015 (Street) AURORA, IL 60506 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Old Second Bancorp, Inc. Common Stock 10/26/2015   S   2,500 D $ 6.55 52,189 (1) D   Old Second Bancorp, Inc. Common Stock 10/26/2015   S   2,500 D $ 6.5336 54,689 D   Old Second Bancorp, Inc. Common Stock 10/26/2015   S   2,500 D $ 6.55 42,727 (2) I Spouse's Trust Old Second Bancorp, Inc. Common Stock 10/26/2015   S   2,500 D $ 6.5336 45,227 I Spouse's Trust

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Old Second Bancorp Inc. Stock Options

$ 7.49

02/17/2010

02/17/2019

Common Stock

1,500

1,500

D

Old Second Bancorp Inc. Stock Options

$ 27.75

12/18/2008

12/18/2017

Common Stock

1,500

1,500

D

Old Second Bancorp Inc. Stock Options

$ 29.2

12/17/2007

12/19/2016

Common Stock

1,500

1,500

D

Old Second Bancorp Inc. Stock Options

$ 31.34

12/20/2005

12/20/2015

Common Stock

1,500

1,500

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
PALMER GERALD 37 S. RIVER ST. AURORA, IL 60506	X

Signatures

/s/ Gerald Palmer		10/26/2015
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Included in this total are 47,189 shares in Mr. Palmer's name as Trustee and 5,000 shares of restricted stock units in Mr. Palmer's name. The sale of the combined 5,000 shares brings the balance to 52,189 shares.
(2)	These shares are held in a brokerage account on behalf of Mr.Palmer's spouse's Trust account. The sale of the combined 5,000 shares brings the balance to 42,727 shares.

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