<SEC-DOCUMENT>0000897101-13-001725.txt : 20131121
<SEC-HEADER>0000897101-13-001725.hdr.sgml : 20131121
<ACCEPTANCE-DATETIME>20131121160942
ACCESSION NUMBER:		0000897101-13-001725
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20131121
DATE AS OF CHANGE:		20131121

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ELECTRO SENSORS INC
		CENTRAL INDEX KEY:			0000351789
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				410943459
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-33286
		FILM NUMBER:		131235496

	BUSINESS ADDRESS:	
		STREET 1:		6111 BLUE CIRCLE DR
		CITY:			MINNETONKA
		STATE:			MN
		ZIP:			55343-9108
		BUSINESS PHONE:		9529300100

	MAIL ADDRESS:	
		STREET 1:		6111 BLUE CIRCLE DR
		CITY:			MINNETONKA
		STATE:			MN
		ZIP:			55343

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Peterson Nancy P.
		CENTRAL INDEX KEY:			0001571365

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	MAIL ADDRESS:	
		STREET 1:		905 MAIN STREET
		CITY:			HOPKINS
		STATE:			MN
		ZIP:			55343
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>electro134845_13da.htm
<DESCRIPTION>AMENDMENT NO.1 TO SCHEDULE 13D
<TEXT>
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<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Washington, D.C. 20549</B></P>

<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Schedule 13D</B></P>

<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>Under the Securities Exchange Act of 1934</B></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><B>(Amendment No. 1)*</B></P>

<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><U>Electro-Sensors, Inc.</U></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Name of Issuer)</P>

<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><U>Common Stock</U></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Title of Class of Securities)</P>

<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><U>285233 10 3</U></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">(CUSIP Number)</P>

<P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">Nancy P. Peterson</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">805 Main Street</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">Hopkins, MN 55343</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><U>612-865-0154</U></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><U>November 19, 2013</U></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">(Date of Event Which Requires Filing of this
Statement)</P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">If the filing person has previously filed a
statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because
of Rule 13d-1(e), 13d-1(f) or 13(d)-1(g), check the following box. <FONT STYLE="font-family: MS Mincho">&#9744;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><B>Note:</B> Schedules filed in paper format
shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom
copies are to be sent.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">*The remainder of this cover page shall be
filled out for a reporting person&rsquo;s initial filing on this form with respect to the subject class of securities, and for
any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">The information required in the remainder of
this cover page shall not be deemed to be &ldquo;filed&rdquo; for the purpose of Section 18 of the Securities Exchange Act of 1934
(&ldquo;Act&rdquo;) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions
of the Act (however, see the Notes).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: justify">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
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    <TD COLSPAN="4" STYLE="border-top: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 6pt; padding-left: 6pt; vertical-align: top; text-align: left">

 <FONT STYLE="font-size: 12pt">CUSIP No.&nbsp;&nbsp;&nbsp;&nbsp;285233 10 3<BR><BR>

</FONT></TD>
    <TD COLSPAN="2" STYLE="border-left: Black 1pt solid; font: 12pt Times New Roman, Times, Serif; padding-right: 6pt; padding-left: 6pt; text-align: center; border-bottom: Black 1pt solid">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 6pt; padding-left: 6pt; text-align: center"><FONT STYLE="font-size: 18pt">1</FONT></TD>
    <TD COLSPAN="5" STYLE="border-right: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-right: 6pt; padding-left: 6pt">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Names of reporting persons</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">S.S. or I.R.S. Identification No. of above persons</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">Nancy P. Peterson</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 6pt; padding-left: 6pt; text-align: center"><FONT STYLE="font-size: 18pt">2</FONT></TD>
    <TD COLSPAN="4" STYLE="border-left: windowtext 1pt solid; padding-right: 6pt; padding-left: 6pt">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Check the appropriate box if a member of a group (see instructions)</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD STYLE="border-right: windowtext 1pt solid; padding-right: 6pt; padding-left: 6pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right"><FONT STYLE="font-size: 8pt">(a) </FONT><FONT STYLE="font-family: MS Mincho">&#9744;</FONT><FONT STYLE="font-size: 12pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right"><FONT STYLE="font-size: 8pt">(b) </FONT><FONT STYLE="font-family: MS Mincho">&#9744;</FONT><FONT STYLE="font-size: 12pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 6pt; padding-left: 6pt; text-align: center"><FONT STYLE="font-size: 18pt">3</FONT></TD>
    <TD COLSPAN="5" STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; border-left: windowtext 1pt solid; background-color: #CCCCCC; padding-right: 6pt; padding-left: 6pt">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">SEC use only</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 6pt; padding-left: 6pt; text-align: center"><FONT STYLE="font-size: 18pt">4</FONT></TD>
    <TD COLSPAN="5" STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; border-left: windowtext 1pt solid; background-color: white; padding-right: 6pt; padding-left: 6pt">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Source of funds (see instructions)</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-weight: normal">PF</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 6pt; padding-left: 6pt; text-align: center"><FONT STYLE="font-size: 18pt">5</FONT></TD>
    <TD COLSPAN="4" STYLE="border-top: windowtext 1pt solid; border-left: windowtext 1pt solid; background-color: white; padding-right: 6pt; padding-left: 6pt">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Check if disclosure of legal proceedings is required pursuant to
        items 2(d) or 2(e)</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; background-color: white; padding-right: 6pt; padding-left: 6pt"><FONT STYLE="font-family: MS Mincho">&#9744;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 6pt; padding-left: 6pt; text-align: center"><FONT STYLE="font-size: 18pt">6</FONT></TD>
    <TD COLSPAN="5" STYLE="border: windowtext 1pt solid; background-color: white; padding-right: 6pt; padding-left: 6pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 6pt"><FONT STYLE="font-size: 8pt">Citizenship or place of organization
        </FONT><FONT STYLE="font-size: 12pt"> </FONT></P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-weight: normal">U.S.A.</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Number of</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">shares</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">beneficially</P></TD>
    <TD STYLE="border-right: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; background-color: white; padding-right: 0.1in; padding-left: 0.1in"><FONT STYLE="font-size: 18pt">7</FONT></TD>
    <TD COLSPAN="3" STYLE="border-right: windowtext 1pt solid; background-color: white; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Sole voting power</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>1,754,464</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">owned by</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">each</P></TD>
    <TD STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; background-color: white; padding-right: 0.1in; padding-left: 0.1in"><FONT STYLE="font-size: 18pt">8</FONT></TD>
    <TD COLSPAN="3" STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; background-color: white; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Shared voting power</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">0</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">reporting</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">person with</P></TD>
    <TD STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; background-color: white; padding-right: 0.1in; padding-left: 0.1in"><FONT STYLE="font-size: 18pt">9</FONT></TD>
    <TD COLSPAN="3" STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; background-color: white; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Sole dispositive power</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>1,754,464</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="2" STYLE="border-right: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 8pt Times New Roman, Times, Serif; padding-right: 0.1in; padding-left: 0.1in">&nbsp;</TD>
    <TD STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; background-color: white; padding-right: 0.1in; padding-left: 0.1in"><FONT STYLE="font-size: 18pt">10</FONT></TD>
    <TD COLSPAN="3" STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; background-color: white; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Shared dispositive power</P>
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">0</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 0.1in; padding-left: 0.1in; text-align: center"><FONT STYLE="font-size: 18pt">11</FONT></TD>
    <TD COLSPAN="5" STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; border-left: windowtext 1pt solid; background-color: white; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Aggregate amount beneficially owned by each reporting person</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>1,754,464</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 0.1in; padding-left: 0.1in; text-align: center"><FONT STYLE="font-size: 18pt">12</FONT></TD>
    <TD COLSPAN="4" STYLE="border-top: Black 1pt solid; border-left: Black 1pt solid; background-color: white; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Check box if the aggregate amount in row (11) excludes certain shares</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">(See instructions)</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P></TD>
    <TD STYLE="border-top: Black 1pt solid; border-right: Black 1pt solid; font: 10pt Times New Roman, Times, Serif; background-color: white; padding-right: 0.1in; padding-left: 0.1in"><FONT STYLE="font-family: MS Mincho">&#9744;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 0.1in; padding-left: 0.1in; text-align: center"><FONT STYLE="font-size: 18pt">13</FONT></TD>
    <TD COLSPAN="5" STYLE="border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; border-left: windowtext 1pt solid; background-color: white; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0">Percent of class represented by amount in row (11)</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><B>51.7%</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-top: windowtext 1pt solid; border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 0.1in; padding-left: 0.1in; text-align: center"><FONT STYLE="font-size: 18pt">14</FONT></TD>
    <TD COLSPAN="5" STYLE="border: windowtext 1pt solid; background-color: white; padding-right: 0.1in; padding-left: 0.1in">
        <P STYLE="font: 8pt Times New Roman, Times, Serif; margin: 0 0 6pt">Type of reporting person (See instructions)</P>
        <P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0">IN</P></TD></TR>
<TR>
    <TD STYLE="width: 7%">&nbsp;</TD>
    <TD STYLE="width: 7%">&nbsp;</TD>
    <TD STYLE="width: 7%">&nbsp;</TD>
    <TD STYLE="width: 13%">&nbsp;</TD>
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 16%">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 12pt 0 0; text-indent: 0.5in">Reference is hereby made to the statement
on Schedule 13D of Nancy P. Peterson (the &ldquo;Reporting Person&rdquo;) originally filed with the Securities and Exchange Commission
on March 13, 2011 with respect to the ownership of Electro-Sensors, Inc. (the &ldquo;Company&rdquo;) (the &ldquo;Schedule 13D&rdquo;),
which is incorporated herein by reference. Pursuant to this Amendment No. 1 to Schedule 13D, Item 5 of the Schedule 13D is hereby
amended as follows:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 2pt; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: .5IN">Item 5.</TD><TD STYLE="width: .5IN"></TD><TD STYLE="text-align: justify"><U>Interest in Securities of the Issuer.</U></TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">(a) Aggregate number and percentage of class beneficially
owned:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">As of November 19, 2013, the Reporting Person owns 1,754,464
shares of common stock of the Company. Based on calculations made in accordance with Rule 13d-3(d), the Reporting Person may be
deemed the beneficial owner of 51.7% of the Company&rsquo;s common stock. This calculation is based on 3,394,707 shares of common
stock outstanding, as of November 11, 2013, reported in the Company&rsquo;s Quarterly Report for the quarterly period ended September
30, 2013 filed with the Commission on November 12, 2013.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">(b) Voting and Dispositive Power:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">The Reporting Person has sole voting and dispositive power
over 1,754,464 shares that may be deemed to be beneficially owned by her as of November 19, 2013.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">(c) Transactions within the past 60 days:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">The Reporting Person acquired a total of 487,913 shares
of common stock on November 19, 2013 in a private transaction with the individuals and entities listed below at a price $3.92 per
share:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 80%; margin-left: 0.5in">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 80%; border: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt"><B>Individual/Entity</B></TD>
    <TD STYLE="width: 20%; border-top: black 1pt solid; border-right: black 1pt solid; border-bottom: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right"><B>Shares</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">Nicholas J. Swenson (an Individual)</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">409,781</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">Groveland Hedged Credit Master Fund Ltd., a Delaware corporation wholly owned by Nicholas J. Swenson.&nbsp;&nbsp;</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">52,265</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; border-left: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt">Glenhurst Co.,&nbsp;&nbsp;a Minnesota corporation wholly owned by Nicholas J. Swenson.</TD>
    <TD STYLE="border-right: black 1pt solid; border-bottom: black 1pt solid; font: 10pt Times New Roman, Times, Serif; padding-right: 5.4pt; padding-left: 5.4pt; text-align: right">25,867</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in; text-align: justify">All these shares were purchased by
the Nancy P. Peterson Individual Retirement Account.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">(d) Right to Direct the Receipt of Dividends:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">(e) Date on Which Reporting Person Ceased to be a 5% Holder:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>


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<TD STYLE="width: .5in">Item 7.</TD><TD STYLE="width: .5in"></TD><TD STYLE="text-align: justify"><U>Material to Be Filed as Exhibits.</U></TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 1in; text-indent: -1in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"></TD><TD>None.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center"><U>SIGNATURE</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-indent: 0.5in">After reasonable inquiry and to the best of
my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 2.5in; text-align: right; text-indent: 0.5in">Dated: November
20, 2013</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right">Name:<U> &nbsp;&nbsp;&nbsp;&nbsp;/s/ Nancy P. Peterson</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: right">Nancy P. Peterson</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</P>



<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0"></P>

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