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
                                                                                  
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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(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

CAMPBELL THOMAS W 		2. Issuer Name and Ticker or Trading Symbol

MIDWESTONE FINANCIAL GROUP INC [ OSKY ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
REGIONAL PRESIDENT/SUBSIDIARY
(Last)          (First)          (Middle)

P. O. BOX 1104 		3. Date of Earliest Transaction (MM/DD/YYYY)

10/5/2007
(Street)

OSKALOOSA, IA 52577
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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
Common Stock   10/5/2007   10/5/2007   M    850   A $12.00   3150   D    
Common Stock   10/5/2007   10/5/2007   M    3750   A $8.375   6900   D    
Common Stock                  4160   (1) I   By ESOP  

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
Stock Option   $19.875                     (2) 12/31/2007   Common Stock   4000     4000   D    
Stock Option   $16.875                     (3) 12/31/2008   Common Stock   2000     2000   D    
Stock Option   $12.00   10/5/2007   10/5/2007   M        850      (4) 12/31/2009   Common Stock   850   $0   0   D    
Stock Option   $8.375   10/5/2007   10/5/2007   M        3750      (5) 12/29/2010   Common Stock   3750   $0   0   D    
Stock Option   $11.25                     (6) 12/31/2011   Common Stock   4000     4000   D    
Stock Option   $16.01                     (7) 12/31/2012   Common Stock   5000     5000   D    
Stock Option   $18.76                     (8) 12/31/2013   Common Stock   5250     5250   D    
Stock Option   $20.84                     (9) 12/31/2014   Common Stock   5000     5000   D    
Stock Option   $17.77                     (10) 12/30/2015   Common Stock   2100     2100   D    

Explanation of Responses:
( 1)  Shares held in MidWestOne Financial Group, Inc. Employee Stock Ownership Plan, for which Mr. Campbell is an administrator, and allocated to Mr. Campbell's account as of December 31, 2006.
( 2)  Total stock options granted as of December 31, 1997 were 4,000, of which 33% were exercisable on or after 12/31/1998, 66% were exercisable on or after 12/31/1999, and 100% were exercisable on or after 12/31/2000.
( 3)  Total stock options granted as of December 31, 1998 were 2,000, of which 33% were exercisable on or after 12/31/1999, 66% were exercisable on or after 12/31/2000, and 100% were exercisable on or after 12/31/2001.
( 4)  Total stock options granted as of December 31, 1999 were 1,000, of which 33% were exercisable on or after 12/31/2000, 66% were exercisable on or after 12/31/2001, and 100% were exercisable on or after 12/31/2002.
( 5)  Total stock options granted as of December 29, 2000 were 3,750, of which 33% were exercisable on or after 12/29/2001, 66% were exercisable on or after 12/29/2002, and 100% were exercisable on or after 12/29/2003.
( 6)  Total stock options granted as of December 31, 2001 were 4,000, of which 33% were exercisable on or after 12/31/2002, 66% were exercisable on or after 12/31/2003, and 100% were exercisable on or after 12/31/2004.
( 7)  Total stock options granted as of December 31, 2002 were 5,000, of which 33% were exercisable on or after 12/31/2003, 66% were exercisable on or after 12/31/2004, and 100% were exercisable on or after 12/31/2005.
( 8)  Total stock options granted as of December 31, 2003 were 5,250, of which 33% were exercisable on or after 12/31/2004, 66% were exercisable on or after 12/31/2005, and 100% were exercisable on or after 12/31/2006.
( 9)  Total stock options granted as of December 31, 2004 were 5,000, of which 33% were exercisable on or after 12/31/2005, 66% were exercisable on or after 12/31/2006, and 100% are exercisable on or after 12/31/2007.
( 10)  Total stock options granted as of December 30, 2005 were 2,100, of which 33% were exercisable on or after 12/30/2006, 66% are exercisable on or after 12/30/2007, and 100% are exercisable on or after 12/30/2008.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
CAMPBELL THOMAS W
P. O. BOX 1104
OSKALOOSA, IA 52577

REGIONAL PRESIDENT/SUBSIDIARY

Signatures
/s/Thomas W. Campbell 10/8/2007
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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