<SEC-DOCUMENT>0001104659-20-033682.txt : 20200316
<SEC-HEADER>0001104659-20-033682.hdr.sgml : 20200316
<ACCEPTANCE-DATETIME>20200316080028
ACCESSION NUMBER:		0001104659-20-033682
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200311
ITEM INFORMATION:		Entry into a Material Definitive Agreement
FILED AS OF DATE:		20200316
DATE AS OF CHANGE:		20200316

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mersana Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001442836
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38129
		FILM NUMBER:		20715324

	BUSINESS ADDRESS:	
		STREET 1:		840 MEMORIAL DRIVE
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		617-498-0020

	MAIL ADDRESS:	
		STREET 1:		840 MEMORIAL DRIVE
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MERSANA THERAPEUTICS INC
		DATE OF NAME CHANGE:	20080813
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>tm2012688-1_8k.htm
<DESCRIPTION>FORM 8-K
<TEXT>
<HTML>
<HEAD>
     <TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

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

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

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 12pt; margin-bottom: 3pt; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid; border-bottom: Black 1pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

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

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, D.C. 20549</B></P>

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

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM 8-K</B></P>

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Date of Report (Date of earliest event reported):
<B>March 11, 2020</B></P>

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

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>MERSANA THERAPEUTICS, INC.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Exact name of registrant as specified in
its charter)</P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR>
<TD STYLE="text-align: center; vertical-align: top; width: 34%"><B>Delaware</B> &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: bottom; width: 1%"><B>&nbsp;</B> &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: top; width: 32%"><B>001-38129</B> </TD>
<TD STYLE="text-align: center; vertical-align: bottom; width: 1%"><B>&nbsp;</B> &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: top; width: 32%"><B>04-3562403</B></TD></TR>
<TR>
<TD STYLE="text-align: center; vertical-align: top">(State or other jurisdiction of<BR> incorporation) &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: bottom">&nbsp; &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: top">(Commission File Number) &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: bottom">&nbsp; &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: top">(IRS Employer<BR> Identification No.) &nbsp;</TD></TR>
</TABLE>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR>
<TD STYLE="text-align: center; vertical-align: top; width: 50%"><B>840 Memorial Drive<BR>
Cambridge, MA 02139</B></TD>
<TD STYLE="text-align: center; vertical-align: bottom; width: 1%">&nbsp; &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: top; width: 49%">&nbsp; &nbsp;</TD></TR>
<TR>
<TD STYLE="text-align: center; vertical-align: top"><B>Cambridge, MA</B> &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: bottom"><B>&nbsp;</B> &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: top"><B>02139</B> &nbsp;</TD></TR>
<TR>
<TD STYLE="text-align: center; vertical-align: top">(Address of principal executive offices) &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: bottom">&nbsp; &nbsp;</TD>
<TD STYLE="text-align: center; vertical-align: top">(Zip Code) &nbsp;</TD></TR>
</TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Registrant&rsquo;s telephone number, including
area code): <B>(617) 498-0020</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Not Applicable</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Former name or former address, if changed
since last report)</P>

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"><FONT STYLE="font-family: Wingdings">&#168;</FONT><FONT STYLE="font-size: 10pt">&nbsp;</FONT>Written
communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"><FONT STYLE="font-family: Wingdings">&#168;</FONT><FONT STYLE="font-size: 10pt">&nbsp;</FONT>Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"><FONT STYLE="font-family: Wingdings">&#168;</FONT><FONT STYLE="font-size: 10pt">&nbsp;</FONT>Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"><FONT STYLE="font-family: Wingdings">&#168;</FONT><FONT STYLE="font-size: 10pt">&nbsp;</FONT>Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; color: #221E1F">Securities registered pursuant to Section 12(b)
of the Act:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; color: #221E1F">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="border: Black 1pt solid; padding-bottom: 8pt; padding-top: 1pt; width: 33%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">Title of each class</FONT></TD>
    <TD STYLE="border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-bottom: 8pt; padding-top: 1pt; width: 28%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">Trading Symbol(s)</FONT></TD>
    <TD STYLE="border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-bottom: 8pt; padding-top: 1pt; width: 39%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">Name of each exchange on which registered</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-right: Black 1pt solid; padding-top: 1pt; border-bottom: Black 1pt solid; border-left: Black 1pt solid; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">Common Stock, $0.0001 par value</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; padding-top: 1pt; border-bottom: Black 1pt solid; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">MRSN</FONT></TD>
    <TD STYLE="border-right: Black 1pt solid; padding-top: 1pt; border-bottom: Black 1pt solid; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">The Nasdaq Global Select Market</FONT></TD></TR>
</TABLE>



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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Indicate by check mark whether the registrant is an emerging
growth company as defined in Rule 405 of the Securities Act of 1933 (&sect;230.405 of this chapter) or Rule 12b-2 of the Securities
Exchange Act of 1934 (&sect;240.12b-2 of this chapter).</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Emerging growth company <FONT STYLE="font-family: Times New Roman, Times, Serif"><FONT STYLE="font-family: Wingdings">&#120;</FONT></FONT></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">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. <FONT STYLE="font-family: Times New Roman, Times, Serif"><FONT STYLE="font-family: Wingdings">&#120;</FONT></FONT></P>




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

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

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 3pt; margin-bottom: 12pt; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 1pt solid; border-bottom: Black 2pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

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

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

<!-- Field: Page; Sequence: 1 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

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

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0%"></TD><TD STYLE="width: 1in"><B>Item 1.01</B></TD><TD><B>Entry into a Material Definitive Agreement.</B></TD></TR></TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">On March 11, 2020, Mersana Therapeutics, Inc. (the &ldquo;Company&rdquo;),
entered into a Seventh Lease Extension and Modification Agreement (the &ldquo;Extension Agreement&rdquo;) to the Lease (the &ldquo;Lease&rdquo;)
with Rivertech Associates II LLC (the &ldquo;Lessor&rdquo;), which covers certain laboratory and office space at 840 Memorial Drive,
Cambridge, MA 02139 (the &ldquo;Premises&rdquo;). The Extension Agreement, effective as of March 10, 2020, extended the Lease to
March 31, 2026, and requires the Lessor to provide certain improvements to the mechanical systems at the Premises.</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The foregoing description of the Amendment is qualified in its
entirety by the full text of the Extension Agreement, a copy of which will be filed as an exhibit to the Company&rsquo;s Quarterly
Report on From 10-Q for the quarter ending March 31, 2020.</P>

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

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

<!-- Field: Page; Sequence: 2 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

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

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

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

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 51%">&nbsp; &nbsp;</TD>
<TD STYLE="width: 5%">&nbsp; &nbsp;</TD>
<TD STYLE="width: 44%"><B>MERSANA THERAPEUTICS, INC.</B> &nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
<TD>&nbsp; &nbsp;</TD>
<TD>&nbsp; &nbsp;</TD>
<TD>&nbsp; &nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
<TD>&nbsp; &nbsp;</TD>
<TD STYLE="font-size: 10pt">By:&nbsp;</TD>
<TD STYLE="border-bottom: black 1pt solid; font-size: 10pt">/s/ Brian DeSchuytner</TD></TR>
<TR STYLE="vertical-align: top">
<TD>&nbsp; &nbsp;</TD>
<TD>&nbsp; &nbsp;</TD>
<TD>Brian DeSchuytner<BR> Senior Vice President, Finance &amp; Product Strategy &nbsp;</TD></TR>
</TABLE>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Date: March 13, 2020</P>

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

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

<!-- Field: Page; Sequence: 3; Options: Last -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><P STYLE="margin: 0pt">&nbsp;</P></DIV>
    <!-- Field: /Page -->

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



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

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
