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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(Print or Type Responses)

1. Name and Address of Reporting Person * Eccher James   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 __X__ Officer (give title below) _____ Other (specify below) CEO (Last) (First) (Middle) 37 S. RIVER ST. 3. Date of Earliest Transaction (Month/Day/Year) 03/31/2017 (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 03/31/2017   A   2 A (4) 1,970 (2) I Profit Sharing Old Second Bancorp, Inc. Common Stock 03/31/2017   A   789 A (4) 9,667 (3) I 401k Savings Plan Old Second Bancorp, Inc. Common Stock               203,962.251 (1) D

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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

Employee Stock Option

$ 27.75

12/18/2008

12/18/2017

Common Stock

20,000

20,000

D

Reporting Owners

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

Signatures

/s/ James Eccher		03/31/2017
**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 148 shares held jointly with spouse; 83,635 shares held in a brokerage account; 50 shares held in Mr. Eccher's name alone, 129.251 shares are dividend equivalents in the form of restricted stock units and 120,000 shares of restricted stock units in the name of Mr. Eccher.
(2)	Of this total, 2 shares were acquired during the first quarter 2017 pursuant to the Old Second Bancorp, Inc. Profit Sharing Plan & Trust. Information herein was provided by the Plan Trustee as of 3-31-17.
(3)	Of this total, 789 shares were acquired during the first quarter 2017 pursuant to the Old Second's Employee Savings Plan & Trust. Information herein was provided by the Plan Trustee as of 3-31-17.
(4)	Does not apply.

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