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<p style="margin: 0pt; text-align: center; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: center; font-family: Times New Roman, Times, serif; font-size: 18pt;"><b>SECURITIES AND EXCHANGE COMMISSION</b></p>

<p style="margin: 0pt; text-align: center; font-family: Times New Roman, Times, serif; font-size: 10pt;">Washington, D.C. 20549</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: center; font-family: Times New Roman, Times, serif; font-size: 18pt;"><b>FORM 8-K</b></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: center; font-family: Times New Roman, Times, serif; font-size: 18pt;"><b>CURRENT REPORT</b></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: center; font-family: Times New Roman; font-size: 10pt;">Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman; font-size: 10pt;">Date of report (Date of earliest event reported): September 19, 2017</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: center; font-family: Times New Roman, Times, serif; font-size: 18pt;"><b>OTTER TAIL CORPORATION</b></p>

<p style="margin: 0pt; text-align: center; font-family: Times New Roman, Times, serif; font-size: 10pt;">(Exact name of registrant as specified in its charter)</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 12pt;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</p>

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			<p style="margin: 0pt; text-align: center;">Minnesota</p>
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			<td style="width: 33%; text-align: center;">0-53713</td>
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			<p style="margin: 0pt; text-align: center;">27-0383995</p>
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			<td>
			<p style="margin: 0pt; text-align: center;">(State or other jurisdiction</p>
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			<td style="text-align: center;">(Commission</td>
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			<p style="margin: 0pt; text-align: center;">(I.R.S. Employer</p>
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			<p style="margin: 0pt; text-align: center;">of incorpora<font style="font-family: Times New Roman, Times, serif; font-size: 10pt;">tion</font></p>
			</td>
			<td style="text-align: center;">File Number)</td>
			<td>
			<p style="margin: 0pt; text-align: center;">Identification No.)</p>
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<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 12pt;">&nbsp;&nbsp;&nbsp;&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

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			<td style="width: 50%;">
			<p style="margin: 0pt;">215 South Cascade Street, P.O. Box 496, Fergus Falls, MN</p>
			</td>
			<td style="width: 50%;">
			<p style="margin: 0pt; text-align: center;">56538-0496</p>
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			<td>
			<p style="margin: 0pt 0pt 0pt 9pt;">(Address of principal executive offices)</p>
			</td>
			<td>
			<p style="margin: 0pt; text-align: center;">(Zip Code)</p>
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</table>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 12pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<font style="font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">Registrant&#39;s telephone number, including area code: <font style="font-family: Times New Roman, Times, serif; font-size: 12pt;">(866) 410-8780</font></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="font-family: Times New Roman, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</p>

<p style="font-family: Times New Roman, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">&nbsp;</p>

<p style="text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0pt;">__ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p>

<p style="font-family: Times New Roman, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">&nbsp;</p>

<p style="text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; margin-left: 0pt;">__ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</p>

<p style="font-family: Times New Roman, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">&nbsp;</p>

<p style="text-align: left; text-indent: -13.5pt; font-family: Times New Roman, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; margin-left: 13.5pt;">__ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</p>

<p style="font-family: Times New Roman, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">&nbsp;</p>

<p style="text-align: left; text-indent: -13.5pt; font-family: Times New Roman, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; margin-left: 13.5pt;">__ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">Emerging growth company __</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. __</p>

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<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;"><b>Item </b><font style="font-family: Times New Roman, Times, serif; font-size: 10pt;"><b>5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.</b> </font></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">(b)<font style="font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;On September 19, 2017, George Koeck notified Otter Tail Corporation (the &ldquo;Company&rdquo;) that he was retiring from his position as Senior Vice President, General Counsel and Corporate Secretary of the Company, effective at the end of the year. </font></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;"><b>&nbsp;</b></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;"><b>&nbsp;</b></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;"><b>&nbsp;</b></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;"><b>&nbsp;</b></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;"><b>&nbsp;<b>&nbsp;</b></b></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;"><b>Signature</b></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;"><b>&nbsp;</b></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed<font style="font-family: Times New Roman, Times, serif; font-size: 10pt;"> on its behalf by the undersigned, thereunto duly authorized.</font></p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

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			<td style="width: 50%;">&nbsp;</td>
			<td style="width: 50%;">
			<p style="margin: 0pt;">OTTER TAIL CORPORATION</p>
			</td>
		</tr>
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			<td>
			<p style="margin: 0pt;">Date: September<font style="font-family: Times New Roman, Times, serif; font-size: 10pt;"> 22, 2017</font></p>
			</td>
			<td>&nbsp;</td>
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			<td>&nbsp;</td>
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			<p style="margin: 0pt; text-align: left;"><div style="font-size: 10pt;"><div style="font-family: Times New Roman, Times, serif;">By<font style="font-family: Times New Roman, Times, serif; font-size: 10pt;">: <u>/s/ </u><u>George</u><u> </u><u>A. Koeck</u></font></div></div></p>
			</td>
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			<td>&nbsp;</td>
			<td>
			<p style="margin: 0pt;"><div style="font-size: 10pt;"><div style="font-family: Times New Roman, Times, serif;">Name:<font style="font-family: Times New Roman, Times, serif; font-size: 10pt;"> George A. Koeck</font></div></div></p>
			</td>
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			<td>&nbsp;</td>
			<td>
			<p style="margin: 0pt;"><div style="font-size: 10pt;"><div style="font-family: Times New Roman, Times, serif;">Title:<font style="font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;&nbsp;&nbsp;General Counsel and Corporate Secretary</font></div></div></p>
			</td>
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<p style="margin: 0pt 0pt 0pt 229.5pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

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<p style="margin: 0pt; text-align: left; font-family: Times New Roman, Times, serif; font-size: 10pt;">&nbsp;</p>

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ottr20170919_8k.htm
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of report (Date of earliest event reported): September 19, 2017
OTTER TAIL CORPORATION
(Exact name of registrant as specified in its charter)
Minnesota
0-53713
27-0383995
(State or other jurisdiction
(Commission
(I.R.S. Employer
of incorpora
tion
File Number)
Identification No.)
215 South Cascade Street, P.O. Box 496, Fergus Falls, MN
56538-0496
(Address of principal executive offices)
(Zip Code)
Registrant's telephone number, including area code:
(866) 410-8780
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
__ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
__ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
__ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
__ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.
Emerging growth company __
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. __
Item
5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
(b)
On September 19, 2017, George Koeck notified Otter Tail Corporation (the "Company") that he was retiring from his position as Senior Vice President, General Counsel and Corporate Secretary of the Company, effective at the end of the year.
Signature
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned, thereunto duly authorized.
OTTER TAIL CORPORATION
Date: September
22, 2017
By
:
/s/
George
A. Koeck
Name:
George A. Koeck
Title:
General Counsel and Corporate Secretary