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 * LIEBE ARVID R   2. Issuer Name and Ticker or Trading Symbol Otter Tail Corp [OTTR] 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) 215 S CASCADE ST 3. Date of Earliest Transaction (Month/Day/Year) 04/08/2013 (Street) FERGUS FALLS, MN 56537-2801 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 Common Stock 04/08/2013   M(1)   613.4105 A (2) 18,925.4105 D   Common Stock 04/08/2013   D   0.4105 D $ 25.3929 18,925 D   Common Stock 04/08/2013   M(3)   134.4641 A (2) 19,059.4641 D   Common Stock 04/08/2013   D   0.4641 D $ 27.4503 19,059 D   Common Stock 04/08/2013   M(1)   3,464.1149 A (2) 22,523.1149 D   Common Stock 04/08/2013   D   0.1149 D $ 21.187 22,523 D   Common Stock 04/08/2013   M(3)   324.3351 A (2) 22,847.3351 D   Common Stock 04/08/2013   D   0.3351 D $ 24.4919 22,847 (4) D   Common Stock               4,673.916 I By IRA's

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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

Phantom Stock

(5)

04/08/2013

M

613.4105

04/08/2013

04/08/2013

Common Stock

613.4105 (2)

(5)

0

D

Phantom Stock

(5)

04/08/2013

M

134.4641

04/08/2013

04/08/2023

Common Stock

1,344.6412 (2)

(5)

1,210.1771

D

Phantom Stock

(5)

04/08/2013

M

3,464.1149

04/08/2013

04/08/2013

Common Stock

3,464.1149 (2)

(5)

0

D

Phantom Stock

(5)

04/08/2013

M

324.3351

04/08/2013

04/08/2023

Common Stock

3,243.3514 (2)

(5)

2,919.0163

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
LIEBE ARVID R 215 S CASCADE ST FERGUS FALLS, MN 56537-2801	X

Signatures

/s/ Arvid R Liebe by Debra J Lill, Attorney-in-Fact		04/11/2013
**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)	Distribution of Phantom Stock Units due to retirement from the Board of Directors in which he elected a lump sum payout.
(2)	Phantom Stock Units acquired under the 1999 Stock Incentive Plan at fair market value as part of the Compensation Program for outside Directors.
(3)	Distribution of Phantom Stock Units due to retirement from the Board of Directors in which he elected annual installments over a ten year period.
(4)	Total direct holdings include shares acquired from Dividend Reinvestment and pursuant to Restricted Stock Award and Phantom Stock Unit distributions.
(5)	1 -for -1

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