<html>
<head>
	<title>lfus20180502_8k.htm</title>

	<!-- Created by RDG HTML Converter v1.1.0.0 5/2/2018 7:24:50 PM --><meta charset="utf-8"><meta name="format-detection" content="telephone=no"/>
</head>
<body style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 10px; margin-right: 10px; cursor: auto;">
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;font-variant:small-caps;margin:0pt;text-align:center;"><b>United States</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;font-variant:small-caps;margin:0pt;text-align:center;"><b>Securities and Exchange Commission<br>
Washington,&nbsp;D.C. 20579</b></p>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;font-variant:small-caps;margin:0pt;text-align:center;"><b>Form&nbsp;8-K<br>
Current Report</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;font-variant:small-caps;margin:0pt;text-align:center;"><b>Pursuant to Section&nbsp;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-top: 0pt; margin-bottom: 0pt;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;text-indent:36pt;">Date of Report (Date of earliest event reported) &ndash; May 3, 2018</p>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;font-variant:small-caps;margin:0pt;text-align:center;"><b>Littelfuse,&nbsp;Inc.</b></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>

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

		<tr>
			<td style="vertical-align:top;width:33.3%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;font-variant:small-caps;margin:0pt;text-align:center;">Delaware</p>
			</td>
			<td style="vertical-align:top;width:33.3%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">0-20388</p>
			</td>
			<td style="vertical-align:top;width:33.3%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">36-3795742</p>
			</td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:33.3%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">(State of other jurisdiction<br>
			of incorporation)</p>
			</td>
			<td style="vertical-align:top;width:33.3%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">(Commission<br>
			File Number)</p>
			</td>
			<td style="vertical-align:top;width:33.3%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">(IRS Employer<br>
			Identification No.)</p>
			</td>
		</tr>

</table>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">8755 W. Higgins Road, Suite 500, Chicago, IL 60631</p>

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

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Registrant&rsquo;s telephone number, including area code: (773) 628-1000</p>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Check the appropriate box below if the Form&nbsp;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>

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

		<tr>
			<td style="width:36pt;vertical-align:top;">
			<p style="font-family:'Times New Roman', Times, serif;margin-right:0pt;margin-top:0pt;text-align:justify;margin-bottom:0pt;font-size:10pt;">[___]</p>
			</td>
			<td style="vertical-align:top;">
			<p style="font-family:'Times New Roman', Times, serif;margin-right:0pt;margin-top:0pt;text-align:justify;margin-bottom:0pt;font-size:10pt;">Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</p>
			</td>
		</tr>

</table>

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

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

		<tr>
			<td style="width:36pt;vertical-align:top;">
			<p style="font-family:'Times New Roman', Times, serif;margin-right:0pt;margin-top:0pt;text-align:justify;margin-bottom:0pt;font-size:10pt;">[___]</p>
			</td>
			<td style="vertical-align:top;">
			<p style="font-family:'Times New Roman', Times, serif;margin-right:0pt;margin-top:0pt;text-align:justify;margin-bottom:0pt;font-size:10pt;">Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</p>
			</td>
		</tr>

</table>

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

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

		<tr>
			<td style="width:36pt;vertical-align:top;">
			<p style="font-family:'Times New Roman', Times, serif;margin-right:0pt;margin-top:0pt;text-align:justify;margin-bottom:0pt;font-size:10pt;">[___]</p>
			</td>
			<td style="vertical-align:top;">
			<p style="font-family:'Times New Roman', Times, serif;margin-right:0pt;margin-top:0pt;text-align:justify;margin-bottom:0pt;font-size:10pt;">Pre-commencement communications pursuant to Rule&nbsp;14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</p>
			</td>
		</tr>

</table>

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

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

		<tr>
			<td style="width:36pt;vertical-align:top;">
			<p style="font-family:'Times New Roman', Times, serif;margin-right:0pt;margin-top:0pt;text-align:justify;margin-bottom:0pt;font-size:10pt;">[___]</p>
			</td>
			<td style="vertical-align:top;">
			<p style="font-family:'Times New Roman', Times, serif;margin-right:0pt;margin-top:0pt;text-align:justify;margin-bottom:0pt;font-size:10pt;">Pre-commencement communications pursuant to Rule&nbsp;13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</p>
			</td>
		</tr>

</table>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:36pt;margin-right:0pt;margin-top:0pt;text-align:justify;text-indent:-36pt;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR &sect;230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR &sect;240.12b-2).</p>

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

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

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

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

<div id="PGBK" style="width: 100%; margin-left: 0pt; margin-right: 0pt">
<div id="PGNUM" style="text-align: center; width: 100%">&nbsp;</div>

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

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Item 8.01&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other Items.</b></p>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:36pt;">The information contained in this Item 8.01, including Exhibit 99.1, shall not be deemed &ldquo;filed&rdquo; with the Securities and Exchange Commission nor incorporated by reference into any filing by Littelfuse, Inc. under the Securities Act or the Securities Exchange Act of 1934, as amended.</p>

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

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:36pt;">Littelfuse, Inc. provides the Supplemental GAAP to Non-GAAP Reconciliation attached as Exhibit 99.1 to this Form 8-K.</p>

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

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

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

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

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

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

		<tr>
			<td style="width: 15%;"><u>Exhibit No.</u></td>
			<td style="width: 85%;"><u>Description of Exhibits</u></td>
		</tr>
		<tr>
			<td style="width: 15%;">99.1&nbsp;</td>
			<td style="width: 85%;"><a href="ex_112475.htm" style="-sec-extract:exhibit;">Supplemental GAAP to Non-GAAP Reconciliation, dated May 3, 2018.</a></td>
		</tr>

</table>

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

<div id="PGBK" style="width: 100%; margin-left: 0pt; margin-right: 0pt">
<div id="PGNUM" style="text-align: center; width: 100%">-2-</div>

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

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

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

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

<table border="0" cellpadding="0" cellspacing="0" style="margin-left:1.2%;width:98.8%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;">

		<tr>
			<td style="vertical-align:top;width:47.5%;">&nbsp;</td>
			<td style="vertical-align:top;width:52.5%;"><font style="font-variant:small-caps;"><b>Littelfuse, Inc</b><b>.</b></font></td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:47.5%;">&nbsp;</td>
			<td style="vertical-align:top;width:52.5%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:47.5%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Date: May 3, 2018</p>
			</td>
			<td style="vertical-align:top;width:52.5%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">By:<u> /s/ Meenal A. Sethna</u></p>
			</td>
		</tr>
		<tr>
			<td style="vertical-align:top;width:47.5%;">&nbsp;</td>
			<td style="vertical-align:top;width:52.5%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Meenal A. Sethna<br>
			Executive Vice President and<br>
			Chief Financial Officer</p>
			</td>
		</tr>

</table>

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

<div id="PGBK" style="width: 100%; margin-left: 0pt; margin-right: 0pt">
<div id="PGNUM" style="text-align: center; width: 100%">-3-</div>

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

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

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

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

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

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

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

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

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

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

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

		<tr>
			<td style="width: 15%;"><u>Exhibit No.</u></td>
			<td style="width: 85%;"><u>Description of Exhibits</u></td>
		</tr>
		<tr>
			<td style="width: 15%;">99.1&nbsp;</td>
			<td style="width: 85%;">Supplemental GAAP to Non-GAAP Reconciliation, dated May 3, 2018.</td>
		</tr>

</table>

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

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;">-4-</p>
</body>
</html>
[{"type": "8-K", "sequence": "1", "filename": "lfus20180502_8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 16368}]
{"company-data": {"conformed-name": "LITTELFUSE INC /DE", "cik": "0000889331", "assigned-sic": "3613", "irs-number": "363795742", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-20388", "film-number": "18801757"}, "business-address": {"street1": "8755 WEST HIGGINS ROAD", "city": "CHICAGO", "state": "IL", "zip": "60631", "phone": "773-628-1000"}, "mail-address": {"street1": "8755 WEST HIGGINS ROAD", "city": "CHICAGO", "state": "IL", "zip": "60631"}}
lfus20180502_8k.htm
United States
Securities and Exchange Commission
Washington, D.C. 20579
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) – May 3, 2018
Littelfuse, Inc.
(Exact name of registrant as specified in its charter)
Delaware
0-20388
36-3795742
(State of other jurisdiction
of incorporation)
(Commission
File Number)
(IRS Employer
Identification No.)
8755 W. Higgins Road, Suite 500, Chicago, IL 60631
(Address of principal executive offices) (Zip Code)
Registrant's telephone number, including area code: (773) 628-1000
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 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).
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 8.01     Other Items.
The information contained in this Item 8.01, including Exhibit 99.1, shall not be deemed "filed" with the Securities and Exchange Commission nor incorporated by reference into any filing by Littelfuse, Inc. under the Securities Act or the Securities Exchange Act of 1934, as amended.
Littelfuse, Inc. provides the Supplemental GAAP to Non-GAAP Reconciliation attached as Exhibit 99.1 to this Form 8-K.
Item 9.01
Financial Statements and Exhibits.
(d)     Exhibits.
Exhibit No.
Description of Exhibits
99.1
Supplemental GAAP to Non-GAAP Reconciliation, dated May 3, 2018.
-2-
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.
Littelfuse, Inc
.
Date: May 3, 2018
By:
/s/ Meenal A. Sethna
Meenal A. Sethna
Executive Vice President and
Chief Financial Officer
-3-
Exhibit Index
Item 9.01
Financial Statements and Exhibits.
(d)     Exhibits.
Exhibit No.
Description of Exhibits
99.1
Supplemental GAAP to Non-GAAP Reconciliation, dated May 3, 2018.
-4-