<html xmlns="http://www.w3.org/1999/xhtml" xmlns:ref="http://www.xbrl.org/2006/ref" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:naics="http://xbrl.sec.gov/naics/2011-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:ixt-sec="http://www.sec.gov/inlineXBRL/transformation/2015-08-31" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ixt="http://www.xbrl.org/inlineXBRL/transformation/2015-02-26" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:us-types="http://fasb.org/us-types/2017-01-31" xmlns:utreg="http://www.xbrl.org/2009/utr" xmlns:invest="http://xbrl.sec.gov/invest/2013-01-31" xmlns:ix="http://www.xbrl.org/2013/inlineXBRL" xmlns:us-roles="http://fasb.org/us-roles/2017-01-31" xmlns:stpr="http://xbrl.sec.gov/stpr/2018-01-31" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:thunderdome="http://www.RDGFilings.com" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" xmlns:dei="http://xbrl.sec.gov/dei/2019-01-31" xmlns:ottr="http://www.ottr.com/20191226" xmlns:us-gaap="http://fasb.org/us-gaap/2019-01-31" xmlns:country="http://xbrl.sec.gov/country/2017-01-31" xmlns:rr="http://xbrl.sec.gov/rr/2018-01-31" xmlns:sic="http://xbrl.sec.gov/sic/2011-01-31" xmlns:currency="http://xbrl.sec.gov/currency/2017-01-31" xmlns:exch="http://xbrl.sec.gov/exch/2018-01-31" xmlns:srt="http://fasb.org/srt/2019-01-31"><head>
	<title>ottr20191223_8k.htm</title>

	<!-- Generated by ThunderDome Portal - 12/27/2019 5:29:57 PM -->
<meta http-equiv="Content-Type" content="text/html" /></head>
<body style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0in 0.1in; cursor: auto;"><div style="display: none">
<ix:header>
<ix:hidden>
<ix:nonNumeric contextRef="d20198K" name="dei:AmendmentFlag">false</ix:nonNumeric>
<ix:nonNumeric contextRef="d20198K" name="dei:EntityCentralIndexKey">0001466593</ix:nonNumeric>

</ix:hidden>
<ix:references>
<link:schemaRef xlink:href="ottr-20191226.xsd" xlink:type="simple" />
</ix:references>
<ix:resources>
<xbrli:context id="d20198K">
<xbrli:entity>
<xbrli:identifier scheme="http://www.sec.gov/CIK">0001466593</xbrli:identifier>
</xbrli:entity>
<xbrli:period>
<xbrli:startDate>2019-12-26</xbrli:startDate>
<xbrli:endDate>2019-12-26</xbrli:endDate>
</xbrli:period>
</xbrli:context>


</ix:resources>
</ix:header>
</div>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<hr style="height: 3px; color: #000000; background-color: #000000; width: 100%; border: none; margin: 3pt 0" />
<hr style="height: 1px; color: #000000; background-color: #000000; width: 100%; border: none; margin: 0 0 3pt 0" />
<p style="font-family:'Times New Roman', Times, serif;font-size:12pt;margin:0pt;text-align:center;"><b>UNITED STATES<br />
SECURITIES AND EXCHANGE COMMISSION</b></p>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:12pt;margin:0pt;text-align:center;"><b>FORM <ix:nonNumeric contextRef="d20198K" name="dei:DocumentType"><b><b>8-K</b></b></ix:nonNumeric></b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>

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

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>&#xa0;</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Date of report (Date of earliest event </b><b>reported): </b><b> </b><ix:nonNumeric contextRef="d20198K" format="ixt:datemonthdayyearen" name="dei:DocumentPeriodEndDate"><b>December </b><b>26</b><b>, 2019</b></ix:nonNumeric></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:12pt;margin:0pt;text-align:center;"><ix:nonNumeric contextRef="d20198K" name="dei:EntityRegistrantName"><b>OTTER TAIL CORPORATION</b></ix:nonNumeric></p>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;">

		<tbody><tr>
			<td style="vertical-align:top;width:33.6%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><ix:nonNumeric contextRef="d20198K" format="ixt-sec:stateprovnameen" name="dei:EntityIncorporationStateCountryCode">Minnesota</ix:nonNumeric></p>
			</td>
			<td style="vertical-align:bottom;width:33.6%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><ix:nonNumeric contextRef="d20198K" name="dei:EntityFileNumber">0-53713</ix:nonNumeric></p>
			</td>
			<td style="vertical-align:top;width:32.7%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><ix:nonNumeric contextRef="d20198K" name="dei:EntityTaxIdentificationNumber">27-0383995</ix:nonNumeric></p>
			</td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:33.6%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">(State or other jurisdiction</p>

			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">of incorporation)</p>
			</td>
			<td style="vertical-align:bottom;width:33.6%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">(Commission</p>

			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">File Number)</p>
			</td>
			<td style="vertical-align:top;width:32.7%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">(I.R.S. Employer</p>

			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Identification No.)</p>
			</td>
		</tr>

</tbody></table>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>&#xa0;</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><ix:nonNumeric contextRef="d20198K" name="dei:EntityAddressAddressLine1"><b>215 South Cascade Street</b></ix:nonNumeric><b>, <ix:nonNumeric contextRef="d20198K" name="dei:EntityAddressAddressLine2"><b><b><b>P.O. Box 496</b></b></b></ix:nonNumeric>, <ix:nonNumeric contextRef="d20198K" name="dei:EntityAddressCityOrTown"><b><b>Fergus Falls</b></b></ix:nonNumeric>, <ix:nonNumeric contextRef="d20198K" name="dei:EntityAddressStateOrProvince"><b><b>MN</b></b></ix:nonNumeric> <ix:nonNumeric contextRef="d20198K" name="dei:EntityAddressPostalZipCode"><b><b>56538-0496</b></b></ix:nonNumeric></b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">(Address of principal executive offices, including zip code)</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>&#xa0;</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>(<ix:nonNumeric contextRef="d20198K" name="dei:CityAreaCode"><b><b>866</b></b></ix:nonNumeric>) <ix:nonNumeric contextRef="d20198K" name="dei:LocalPhoneNumber"><b><b>410-8780</b></b></ix:nonNumeric></b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">(Registrant&#8217;s telephone number, including area code)</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>&#xa0;</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Not Applicable</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">(Former name or former address, if changed since last report)</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934:</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>

<table cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; margin-right: 0pt;">

		<tbody><tr style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">
			<td style="vertical-align: top; border-width: 1px; border-style: solid; border-color: rgb(0, 0, 0); width: 37.4%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Title of each class</p>
			</td>
			<td style="vertical-align: top; border-bottom: 1px solid rgb(0, 0, 0); width: 24.9%; border-right: 1px solid rgb(0, 0, 0); border-top: 1px solid rgb(0, 0, 0); font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Trading Symbol(s)</p>
			</td>
			<td style="vertical-align: top; border-bottom: 1px solid rgb(0, 0, 0); width: 40.5%; border-right: 1px solid rgb(0, 0, 0); border-top: 1px solid rgb(0, 0, 0); font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Name of each exchange on which registered</p>
			</td>
		</tr>
		<tr style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">
			<td style="vertical-align: top; border-bottom: 1px solid rgb(0, 0, 0); width: 37.4%; border-left: 1px solid rgb(0, 0, 0); border-right: 1px solid rgb(0, 0, 0); font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:0pt;margin-top:0pt;text-align:center;"><ix:nonNumeric contextRef="d20198K" name="dei:Security12bTitle">Common Shares, par value $5.00 per share</ix:nonNumeric></p>
			</td>
			<td style="vertical-align: top; border-bottom: 1px solid rgb(0, 0, 0); width: 24.9%; border-right: 1px solid rgb(0, 0, 0); font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><ix:nonNumeric contextRef="d20198K" name="dei:TradingSymbol">OTTR</ix:nonNumeric></p>
			</td>
			<td style="vertical-align: top; border-bottom: 1px solid rgb(0, 0, 0); width: 40.5%; border-right: 1px solid rgb(0, 0, 0); font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><ix:nonNumeric contextRef="d20198K" format="ixt-sec:exchnameen" name="dei:SecurityExchangeName">The Nasdaq Stock Market LLC</ix:nonNumeric></p>
			</td>
		</tr>

</tbody></table>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">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:0pt;text-align:left;">&#xa0;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px;">

		<tbody><tr style="vertical-align: top;">
			<td style="width: 18pt;">
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><ix:nonNumeric contextRef="d20198K" format="ixt-sec:boolballotbox" name="dei:WrittenCommunications">&#9744;</ix:nonNumeric></p>
			</td>
			<td>
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p>
			</td>
		</tr>

</tbody></table>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px;">

		<tbody><tr style="vertical-align: top;">
			<td style="width: 18pt;">
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><ix:nonNumeric contextRef="d20198K" format="ixt-sec:boolballotbox" name="dei:SolicitingMaterial">&#9744;</ix:nonNumeric></p>
			</td>
			<td>
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</p>
			</td>
		</tr>

</tbody></table>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px;">

		<tbody><tr style="vertical-align: top;">
			<td style="width: 18pt;">
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><ix:nonNumeric contextRef="d20198K" format="ixt-sec:boolballotbox" name="dei:PreCommencementTenderOffer">&#9744;</ix:nonNumeric></p>
			</td>
			<td>
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</p>
			</td>
		</tr>

</tbody></table>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px;">

		<tbody><tr style="vertical-align: top;">
			<td style="width: 18pt;">
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><ix:nonNumeric contextRef="d20198K" format="ixt-sec:boolballotbox" name="dei:PreCommencementIssuerTenderOffer">&#9744;</ix:nonNumeric></p>
			</td>
			<td>
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</p>
			</td>
		</tr>

</tbody></table>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">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="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Emerging growth company <ix:nonNumeric contextRef="d20198K" format="ixt-sec:boolballotbox" name="dei:EntityEmergingGrowthCompany">&#9744;</ix:nonNumeric></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">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. &#9744;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<hr style="height: 1px; color: #000000; background-color: #000000; width: 100%; border: none; margin: 3pt 0" />
<hr style="height: 3px; color: #000000; background-color: #000000; width: 100%; border: none; margin: 0 0 3pt 0" />
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<div style="width: 100%; margin-left: 0pt; margin-right: 0pt">
<div style="text-align: center; width: 100%">&#xa0;</div>

<hr style="PAGE-BREAK-AFTER: always; border: none; width: 100%; height: 2px; color: #000000; background-color: #000000" />
<div style="text-align: left; width: 100%">&#xa0;</div>
</div>

<p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:45.35pt;"><br />
On December 26, 2019, the Board of Directors of Otter Tail Corporation (the &#8220;Company&#8221;) amended and restated the Otter Tail Corporation Executive Survivor and Supplemental Retirement Plan (the &#8220;ESSRP&#8221;) to provide for (i) the freezing of participation in the restoration retirement benefit component of the ESSRP and (ii) the freezing of benefit accruals under the restoration retirement benefit component of the ESSRP for all participants, except those participants designated as a grandfathered participant, effective December&#xa0;31, 2019. The ESSRP is a nonqualified benefit plan for executive officers and certain key management employees that provides for defined benefit payments to these employees on their retirement for life or to their beneficiaries on their death. In addition, the ESSRP provides for survivor benefit payments to beneficiaries of executive officers. Kevin Moug, the Company&#8217;s Senior Vice President and Chief Financial Officer was designated by the Board of Directors as a grandfathered participant and will not be affected by the freeze.<br />
<br />
In connection with amending and restating the ESSRP, the Board of Directors also approved the making of special employer contributions to named participants in the Otter Tail Corporation Executive Restoration Plus Plan (the &#8220;ERPP&#8221;) who will be affected by the ESSRP freeze in order to offset the impact of the freeze for those participants. The ERPP is a nonqualified defined contribution plan for executive officers and certain others who are not eligible to participate in the Company&#8217;s Pension Plan or the ESSRP. Beginning with 2020 and later years, following the end of each year, a special employer contribution credit will be made to each executive&#8217;s account. Chuck MacFarlane, the Company&#8217;s President and Chief Executive Officer, will be credited with 22.4% of his prior year&#8217;s base and short-term incentive and Tim Rogelstad, the Company&#8217;s Senior Vice President, Electric Platform, and President, Otter Tail Power Company, will be credited with 7.8% of his prior year&#8217;s base and short-term incentive. This is in addition to the normal contributions provided by the ERPP Plan. The special employer contribution will continue until the executive retires, or reaches age 62, whichever comes first.<br />
<br />
The ESSRP, as amended and restated, is filed as Exhibit 10.1 hereto and is incorporated herein by reference. The ERPP was filed as <a href="http://www.sec.gov/Archives/edgar/data/1466593/000157104915001018/t81390_ex10-5.htm" style="-sec-extract:exhibit;">Exhibit 10.5</a> to the Company&#8217;s Form 8-K filed with the Securities and Exchange Commission on February 11, 2015, and the First Amendment to the ERPP was filed as <a href="http://www.sec.gov/Archives/edgar/data/1466593/000143774918002843/ex_104630.htm" style="-sec-extract:exhibit;">Exhibit 10-F-18a</a> to the Company&#8217;s Form 10-K for the fiscal year ended December 31, 2017, and are incorporated by reference herein.</p>

<p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Item 9.01. Financial Statements and Exhibits.</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">

		<tbody><tr style="vertical-align: top; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">
			<td style="width: 22px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="width: 29px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">(d)</td>
			<td style="width: 47px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><span style="text-decoration: underline;">Exhibits</span></p>
			</td>
			<td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 1653px;">
			<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</p>
			</td>
		</tr>
		<tr style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">
			<td style="width: 22px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="width: 29px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="width: 47px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 1653px;">&#xa0;</td>
		</tr>
		<tr style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">
			<td style="width: 22px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="width: 29px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="width: 47px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">10.1</td>
			<td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 1653px;"><a href="ex_168105.htm" style="-sec-extract:exhibit;">Otter Tail Corporation Executive Survivor and Supplemental Retirement Plan (2020 Restatement).</a></td>
		</tr>
		<tr>
			<td style="width: 22px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="width: 29px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="width: 47px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 1653px;">&#xa0;</td>
		</tr>
		<tr>
			<td style="width: 22px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="width: 29px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
			<td style="width: 47px; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">104</td>
			<td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 1653px;">Cover Page Interactive Data File (embedded within the Inline XBRL document).</td>
		</tr>

</tbody></table>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<div style="width: 100%; margin-left: 0pt; margin-right: 0pt">
<div style="text-align: center; width: 100%">&#xa0;</div>

<hr style="PAGE-BREAK-AFTER: always; border: none; width: 100%; height: 2px; color: #000000; background-color: #000000" />
<div style="text-align: left; width: 100%">&#xa0;</div>
</div>

<p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">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 hereunto duly authorized.</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;">

		<tbody><tr>
			<td style="vertical-align:top;width:34.5%;">&#xa0;</td>
			<td style="vertical-align:top;width:13.5%;">&#xa0;</td>
			<td colspan="3" style="vertical-align:top;width:52%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">OTTER TAIL CORPORATION</p>
			</td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:34.5%;">&#xa0;</td>
			<td style="vertical-align:top;width:13.5%;">&#xa0;</td>
			<td colspan="3" style="vertical-align:top;width:52%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
			</td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:34.5%;">&#xa0;</td>
			<td style="vertical-align:top;width:13.5%;">&#xa0;</td>
			<td colspan="3" style="vertical-align:top;width:52%;">&#xa0;</td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:34.5%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Date: December 27, 2019</p>
			</td>
			<td style="vertical-align:top;width:13.5%;">&#xa0;</td>
			<td style="vertical-align:top;width:4.9%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">By:</p>
			</td>
			<td style="vertical-align:top;border-bottom:solid 1px #000000;;width:40.4%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/&#xa0;Jennifer O. Smestad</p>
			</td>
			<td style="vertical-align:top;width:6.7%;">&#xa0;</td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:34.5%;">&#xa0;</td>
			<td style="vertical-align:top;width:13.5%;">&#xa0;</td>
			<td style="vertical-align:top;width:4.9%;">&#xa0;</td>
			<td colspan="2" style="vertical-align:top;width:47.1%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Jennifer O. Smestad</p>
			</td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:34.5%;">&#xa0;</td>
			<td style="vertical-align:top;width:13.5%;">&#xa0;</td>
			<td style="vertical-align:top;width:4.9%;">&#xa0;</td>
			<td colspan="2" style="vertical-align:top;width:47.1%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Vice President, General Counsel and Corporate Secretary</p>
			</td>
		</tr>

</tbody></table>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:0pt;margin-right:27pt;margin-top:0pt;text-align:left;">&#xa0;</p>


</body></html>
[{"type": "8-K", "sequence": "1", "filename": "ottr20191223_8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 28844}]
{"company-data": {"conformed-name": "Otter Tail Corp", "cik": "0001466593", "assigned-sic": "4911", "irs-number": "270383995", "state-of-incorporation": "MN", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-53713", "film-number": "191313180"}, "business-address": {"street1": "215 S CASCADE ST", "street2": "PO BOX 496", "city": "FERGUS FALLS", "state": "MN", "zip": "56538-0496", "phone": "866-410-8780"}, "mail-address": {"street1": "215 S CASCADE ST", "street2": "PO BOX 496", "city": "FERGUS FALLS", "state": "MN", "zip": "56538-0496"}, "former-company": {"former-conformed-name": "Otter Tail Holding Co", "date-changed": "20090618"}}
ottr20191223_8k.htm
UNITED STATES
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):
December
26
, 2019
OTTER TAIL CORPORATION
(Exact name of registrant as specified in its charter)
Minnesota
0-53713
27-0383995
(State or other jurisdiction
of incorporation)
(Commission
File Number)
(I.R.S. Employer
Identification No.)
215 South Cascade Street
,
P.O. Box 496
,
Fergus Falls
,
MN
56538-0496
(Address of principal executive offices, including zip code)
(
866
)
410-8780
(Registrant's telephone number, including area code)
Not Applicable
(Former name or former address, if changed since last report)
Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934:
Title of each class
Trading Symbol(s)
Name of each exchange on which registered
Common Shares, par value $5.00 per share
OTTR
The Nasdaq Stock Market LLC
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
.
On December 26, 2019, the Board of Directors of Otter Tail Corporation (the "Company") amended and restated the Otter Tail Corporation Executive Survivor and Supplemental Retirement Plan (the "ESSRP") to provide for (i) the freezing of participation in the restoration retirement benefit component of the ESSRP and (ii) the freezing of benefit accruals under the restoration retirement benefit component of the ESSRP for all participants, except those participants designated as a grandfathered participant, effective December 31, 2019. The ESSRP is a nonqualified benefit plan for executive officers and certain key management employees that provides for defined benefit payments to these employees on their retirement for life or to their beneficiaries on their death. In addition, the ESSRP provides for survivor benefit payments to beneficiaries of executive officers. Kevin Moug, the Company's Senior Vice President and Chief Financial Officer was designated by the Board of Directors as a grandfathered participant and will not be affected by the freeze.
In connection with amending and restating the ESSRP, the Board of Directors also approved the making of special employer contributions to named participants in the Otter Tail Corporation Executive Restoration Plus Plan (the "ERPP") who will be affected by the ESSRP freeze in order to offset the impact of the freeze for those participants. The ERPP is a nonqualified defined contribution plan for executive officers and certain others who are not eligible to participate in the Company's Pension Plan or the ESSRP. Beginning with 2020 and later years, following the end of each year, a special employer contribution credit will be made to each executive's account. Chuck MacFarlane, the Company's President and Chief Executive Officer, will be credited with 22.4% of his prior year's base and short-term incentive and Tim Rogelstad, the Company's Senior Vice President, Electric Platform, and President, Otter Tail Power Company, will be credited with 7.8% of his prior year's base and short-term incentive. This is in addition to the normal contributions provided by the ERPP Plan. The special employer contribution will continue until the executive retires, or reaches age 62, whichever comes first.
The ESSRP, as amended and restated, is filed as Exhibit 10.1 hereto and is incorporated herein by reference. The ERPP was filed as
Exhibit 10.5
to the Company's Form 8-K filed with the Securities and Exchange Commission on February 11, 2015, and the First Amendment to the ERPP was filed as
Exhibit 10-F-18a
to the Company's Form 10-K for the fiscal year ended December 31, 2017, and are incorporated by reference herein.
Item 9.01. Financial Statements and Exhibits.
(d)
Exhibits
10.1
Otter Tail Corporation Executive Survivor and Supplemental Retirement Plan (2020 Restatement).
104
Cover Page Interactive Data File (embedded within the Inline XBRL document).
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 hereunto duly authorized.
OTTER TAIL CORPORATION
Date: December 27, 2019
By:
/s/ Jennifer O. Smestad
Jennifer O. Smestad
Vice President, General Counsel and Corporate Secretary