FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   Cantrell James M 2. Date of Event Requiring Statement (Month/Day/Year) 12/07/2017 3. Issuer Name and Ticker or Trading Symbol MidWestOne Financial Group, Inc. [MOFG] (Last) (First) (Middle) 102 S. CLINTON STREET, P.O. BOX 1700 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chief Financial Officer 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) IOWA CITY, IA 52244-1700 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 8,963 (1) D   Common Stock 1,957 (2) I By ESOP Common Stock 500 I By IRA

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Cantrell James M 102 S. CLINTON STREET P.O. BOX 1700 IOWA CITY, IA 52244-1700	Â	Â	  Chief Financial Officer	Â

Signatures

Kenneth R. Urmie, Corporate Secretary, under Power of Attorney for James M. Cantrell, dated December 8, 2017		12/15/2017
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	Includes 125 restricted stock units from February 15, 2014 award, 750 restricted stock units from February 15, 2015 award, 1,125 restricted stock units from February 15, 2016 award and 1,800 restricted stock units from February 15, 2017 award. The restricted stock units vest in equal annual installments over their respective four year vesting periods.
(2)	Shares held in the MidWestOne Financial Group, Inc. Employee Stock Ownership Plan as of December 7, 2017.
  Remarks: On November 14, 2017, Katie A. Lorenson announced her resignation from her positions as Senior Vice President, Chief Financial Officer, principal financial officer and principal accounting officer of MidWestOne Financial Group, Inc. (the "Company"). Her resignation became effective on December 7, 2017. On November 14, 2017, the Company appointed James M. Cantrell to serve as Chief Financial Officer, principal financial officer and principal accounting officer, on an interim basis beginning December 7, 2017, while the Company conducts an executive search for Ms. Lorenson's permanent replacement. Mr. Cantrell currently serves as Vice President, Chief Investment Officer and Treasurer of the Company and as Senior Vice President, Chief Investment Officer and Treasurer of MidWestOne Bank, the Company's wholly owned subsidiary. He has served in these positions since joining the Company in 2009.

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