<SEC-DOCUMENT>0000886163-18-000106.txt : 20180730
<SEC-HEADER>0000886163-18-000106.hdr.sgml : 20180730
<ACCEPTANCE-DATETIME>20180730063527
ACCESSION NUMBER:		0000886163-18-000106
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180730
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180730
DATE AS OF CHANGE:		20180730

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LIGAND PHARMACEUTICALS INC
		CENTRAL INDEX KEY:			0000886163
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				770160744
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33093
		FILM NUMBER:		18976044

	BUSINESS ADDRESS:	
		STREET 1:		3911 SORRENTO VALLEY BLVD
		STREET 2:		SUITE 110
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		858-550-7500

	MAIL ADDRESS:	
		STREET 1:		3911 SORRENTO VALLEY BLVD
		STREET 2:		SUITE 110
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>ligand-form8.htm
<DESCRIPTION>8-K
<TEXT>
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<div><a name="s59EF2F44E7A2A7FE0EB2E98642F32216"></a></div><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:173%;text-align:center;font-size:14pt;"><font style="font-family:inherit;font-size:14pt;font-weight:bold;">UNITED STATES</font></div><div style="line-height:173%;text-align:center;font-size:14pt;"><font style="font-family:inherit;font-size:14pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></div><div style="line-height:173%;text-align:center;font-size:14pt;"><font style="font-family:inherit;font-size:14pt;font-weight:bold;">WASHINGTON, D.C. 20549</font></div><div style="line-height:173%;text-align:center;font-size:10.5pt;"><font style="font-family:inherit;font-size:10.5pt;font-weight:bold;">______________</font></div><div style="line-height:173%;text-align:center;font-size:16pt;"><font style="font-family:inherit;font-size:16pt;font-weight:bold;">FORM 8</font><font style="font-family:inherit;font-size:16pt;">&#8209;</font><font style="font-family:inherit;font-size:16pt;font-weight:bold;">K</font></div><div style="line-height:173%;text-align:center;font-size:10.5pt;"><font style="font-family:inherit;font-size:10.5pt;font-weight:bold;">______________</font></div><div style="line-height:173%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">CURRENT REPORT</font></div><div style="line-height:173%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Pursuant to Section 13 or 15(d) of the</font></div><div style="line-height:173%;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Securities Exchange Act of 1934</font></div><div style="line-height:173%;padding-top:8px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Date of Report (Date of earliest event reported): July 30, 2018</font></div><div style="line-height:173%;padding-bottom:9px;padding-top:16px;text-align:center;font-size:16pt;"><font style="font-family:inherit;font-size:16pt;font-weight:bold;">LIGAND PHARMACEUTICALS INCORPORATED</font><font style="font-family:inherit;font-size:10pt;">&#32;&#32;&#32;&#32;&#32;<br></font><font style="font-family:inherit;font-size:8pt;">(Exact Name of Registrant as Specified in Its Charter)</font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:86.53846153846155%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:34%;"></td><td style="width:33%;"></td><td style="width:33%;"></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Delaware</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">001-33093</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">77-0160744</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(State or other jurisdiction of</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(Commission File Number)</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(I.R.S. Employer</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">incorporation or organization)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">Identification No.)</font></div></td></tr></table></div></div><div style="line-height:120%;padding-bottom:9px;padding-top:4px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;text-align:center;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;margin-left:auto;margin-right:auto;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="3"></td></tr><tr><td style="width:49%;"></td><td style="width:2%;"></td><td style="width:49%;"></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">3911 Sorrento Valley Boulevard, Suite 110</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">92121</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">San Diego, CA</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">(Zip Code)</font></div></td></tr><tr><td style="vertical-align:middle;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:1px;"><div style="padding-bottom:2px;text-align:center;padding-left:4px;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(Address of principal executive offices)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td></tr></table></div></div><div style="line-height:144%;padding-top:20px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">(858)&#160;550-7500</font></div><div style="line-height:173%;padding-bottom:8px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Registrant&#8217;s Telephone Number, Including Area Code)</font></div><div style="line-height:173%;padding-bottom:4px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">N/A</font></div><div style="line-height:173%;padding-bottom:8px;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(Former Name or Former Address, if Changed Since Last Report)</font></div><div style="line-height:173%;text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:173%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</font></div><div style="line-height:173%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:33px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:144%;font-size:10pt;padding-left:0px;"><font style="font-family:Wingdings;font-size:10pt;">o</font></div></td><td style="vertical-align:top;"><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Written communications pursuant to Rule&#160;425 under the Securities Act (17 CFR 230.425)</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:33px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:144%;font-size:10pt;padding-left:0px;"><font style="font-family:Wingdings;font-size:10pt;">o</font></div></td><td style="vertical-align:top;"><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Soliciting material pursuant to Rule&#160;14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:33px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:144%;font-size:10pt;padding-left:0px;"><font style="font-family:Wingdings;font-size:10pt;">o</font></div></td><td style="vertical-align:top;"><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Pre-commencement communications pursuant to Rule&#160;14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></div></td></tr></table><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:33px;"></td><td></td></tr><tr><td style="vertical-align:top"><div style="line-height:144%;font-size:10pt;padding-left:0px;"><font style="font-family:Wingdings;font-size:10pt;">o</font></div></td><td style="vertical-align:top;"><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Pre-commencement communications pursuant to Rule&#160;13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></div></td></tr></table><div><br></div><div><div style="line-height:120%;text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:144%;text-align:left;padding-left:33px;text-indent:-34px;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;font-weight:bold;">Item 8.01.  Other Events. </font></div><div style="line-height:144%;padding-bottom:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">Reference is made to the Supplemental Indenture, dated as of February 20, 2018, entered into by Ligand Pharmaceuticals Incorporated (the &#8220;</font><font style="font-family:inherit;font-size:11pt;font-weight:bold;">Company</font><font style="font-family:inherit;font-size:11pt;">&#8221;) and Wilmington Trust, National Association, as trustee, which supplemented the Indenture, dated as of August 18, 2014, between the Company and Wilmington Trust, National Association (as further supplemented, the &#8220;</font><font style="font-family:inherit;font-size:11pt;font-weight:bold;">Indenture</font><font style="font-family:inherit;font-size:11pt;">&#8221;), which governs the Company&#8217;s 0.75% convertible senior notes due 2019 (the &#8220;</font><font style="font-family:inherit;font-size:11pt;font-weight:bold;">2019 Notes</font><font style="font-family:inherit;font-size:11pt;">&#8221;),</font><font style="font-family:inherit;font-size:10pt;">&#32;</font><font style="font-family:inherit;font-size:11pt;">as disclosed in the Current Report on Form 8-K filed with the Securities and Exchange Commission on May 22, 2018. The Company and Wilmington Trust, National Association entered into the Supplemental Indenture to conform the definition of &#8220;Daily Share Amount&#8221; in the Indenture to the correct definition in the offering memorandum, dated August 12, 2014.  The Supplemental Indenture corrected a scrivener&#8217;s error in the conversion calculation and was entered into pursuant to Section 9.01(b) of the Indenture, which expressly permits amendments to the Indenture without consent of the noteholders to conform the terms of the Indenture or the 2019 Notes to the &#8220;Description of the Notes&#8221; section of the offering memorandum, which contained the correct conversion calculation.  In addition, the correction conforms the calculation to the stated number of shares to be received upon conversion of the 2019 Notes that is stated in Section 10.01(a) of the Indenture, or a conversion rate initially equal to 13.3251 shares of common stock per $1,000 in principal amount of 2019 Notes. Notice of the Supplemental Indenture was provided to the holders of the 2019 Notes on March 8, 2018 in accordance with Section 9.04 of the Indenture.  </font></div><div style="line-height:144%;padding-bottom:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">On July 27, 2018, AG Oncon, LLC, AG Ofcon, Ltd., Calamos Market Neutral Income Fund, Capital Ventures International, Citadel Equity Fund Ltd., Opti Opportunity Master Fund, Polygon Convertible Opportunity Master Fund, Wolverine Flagship Fund Trading Limited, as plaintiffs, filed a complaint in the Court of Chancery of the State of Delaware (</font><font style="font-family:inherit;font-size:11pt;font-style:italic;">AG Oncon, LLC v. Ligand Pharmaceuticals Inc.</font><font style="font-family:inherit;font-size:11pt;">) alleging that the Supplemental Indenture was made improperly and seeks, among other things, damages and a declaration that the Supplemental Indenture is invalid.</font></div><div style="line-height:144%;padding-bottom:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">The Company believes the allegations are completely without merit, rejects all claims raised by the plaintiffs and intends to vigorously defend this matter.  </font></div><div style="line-height:144%;padding-bottom:16px;text-align:left;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">The foregoing description of the Indenture, the 2019 Notes and the Supplemental Indenture is qualified in its entirety by reference to the Indenture (including the form of the 2019 Note), which is attached hereto as Exhibit 4.1, and the Supplemental Indenture, which is attached hereto as Exhibit 4.2, each of which are incorporated herein by reference.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Item 9.01. Financial Statements and Exhibits. </font></div><div style="line-height:120%;padding-top:8px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(d)&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:10pt;font-style:italic;">Exhibits</font><font style="font-family:inherit;font-size:10pt;">.</font></div><div style="line-height:120%;padding-top:8px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div><div style="line-height:120%;text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td style="width:15%;"></td><td style="width:85%;"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;text-decoration:underline;">Exhibit No.</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:2px;padding-right:2px;"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;text-decoration:underline;">Description</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="http://www.sec.gov/Archives/edgar/data/886163/000119312514313479/0001193125-14-313479-index.htm"><font style="font-family:inherit;font-size:10pt;">4.1</font></a></div></td><td style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Indenture, dated as of August 18, 2014, between the Company and Wilmington Trust, National Association, as trustee, including the form of 0.75% Convertible Senior Notes due 2019 (incorporated by reference to Exhibit 4.1 to the Company&#8217;s Current Report on Form 8-K filed with the Securities and Exchange Commission on August 18, 2014)</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:10pt;"><a style="font-family:inherit;font-size:10pt;" href="exhibit.htm"><font style="font-family:inherit;font-size:10pt;">4.2</font></a></div></td><td style="vertical-align:top;padding-left:2px;padding-top:8px;padding-bottom:2px;padding-right:2px;"><div style="text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Supplemental Indenture, dated as of February  20, 2018, between the Company and Wilmington Trust, National Association, as trustee</font></div></td></tr></table></div></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:144%;padding-bottom:16px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div><div style="line-height:120%;text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">SIGNATURES</font></div><div style="line-height:120%;padding-bottom:26px;text-align:justify;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</font></div><div style="line-height:120%;padding-left:25px;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:95.94017094017094%;border-collapse:collapse;text-align:left;"><tr><td colspan="2"></td></tr><tr><td style="width:47%;"></td><td style="width:53%;"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">&#160;</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:left;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">LIGAND PHARMACEUTICALS INCORPORATED</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;text-align:left;padding-left:4px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Date: July 30, 2018</font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;"><div style="padding-bottom:2px;padding-top:2px;padding-left:50px;text-indent:-47px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">By:   </font><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Charles Berkman</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</font></div><div style="padding-bottom:2px;padding-top:2px;padding-left:50px;text-indent:-47px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Name:    Charles Berkman</font></div><div style="padding-bottom:2px;padding-top:2px;padding-left:50px;text-indent:-47px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Title:    Senior Vice President, General Counsel and Secretary </font></div></td></tr></table></div></div><div style="line-height:173%;padding-top:12px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:173%;padding-top:12px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div><br></div><div><div style="line-height:120%;text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"><br></font></div></div>	</body>
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<TYPE>EX-4.2
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<DESCRIPTION>EXHIBIT 4.2
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<div><a name="s1F13F54D6C48ABB8B540E98C34C245FC"></a></div><div><div style="line-height:120%;padding-bottom:16px;text-align:right;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">Exhibit 4.2</font></div><div style="line-height:120%;text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">SUPPLEMENTAL INDENTURE</font><font style="font-family:inherit;font-size:12pt;">&#32;(this &#8220;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Supplemental Indenture</font><font style="font-family:inherit;font-size:12pt;">&#8221;), dated as of February 20, 2018, between Ligand Pharmaceuticals Incorporated, a Delaware corporation (the &#8220;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Issuer</font><font style="font-family:inherit;font-size:12pt;">&#8221;) and Wilmington Trust, National Association, as trustee under the Indenture referred to below (the &#8220;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Trustee</font><font style="font-family:inherit;font-size:12pt;">&#8221;).</font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">W I T N E S S E T H</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">WHEREAS, pursuant to Section 9.01(b) of the Indenture, dated as of August 18, 2014 (the &#8220;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Indenture</font><font style="font-family:inherit;font-size:12pt;">&#8221;), between the Issuer and the Trustee (the &#8220;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Parties</font><font style="font-family:inherit;font-size:12pt;">&#8221;), and numbered Paragraph 8 of the Notes issued thereunder, the Parties may amend or supplement the Indenture or the Notes without the consent of any Holder of a Note to conform the terms of the Indenture or the Notes to the &#8220;Description of Notes&#8221; section of the Offering Memorandum;</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">WHEREAS, the Issuer has identified such a nonconforming term in a provision of the Indenture and wishes, in this Supplemental Indenture, to conform such provision to the &#8220;Description of Notes&#8221; section of the Offering Memorandum; and</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">WHEREAS, all things necessary to make this Supplemental Indenture a valid Supplemental Indenture and agreement according to its terms have been done.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt of which is hereby acknowledged, the Parties mutually covenant and agree for the equal and ratable benefit of the holders of the Notes as follows:</font></div><div style="line-height:120%;padding-left:0px;padding-bottom:16px;text-align:left;text-indent:48px;"><font style="padding-bottom:16px;text-align:left;font-family:inherit;font-size:12pt;padding-right:48px;">1.</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Capitalized Terms</font><font style="font-family:inherit;font-size:12pt;">.  Capitalized terms used herein without definition shall have the meanings assigned to them in the Indenture.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">2.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Amendment to the Indenture</font><font style="font-family:inherit;font-size:12pt;">. The definition of &#8220;Daily Share Amount,&#8221; as set forth in Section 1.01 of the Indenture, is hereby amended by replacing the words &#8220;the Daily Principal Portion for such Trading Day&#8221; in clause (ii) thereof with the words &#8220;the Daily VWAP for such VWAP Trading Day.&#8221; As a result, this Supplemental Indenture amends the definition of &#8220;Daily Share Amount,&#8221; as set forth in Section 1.01 of the Indenture, to read in its entirety as follows: </font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;padding-left:96px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">&#8220;Daily Share Amount&#8221; means a number of shares equal to (i) the excess of the Daily Conversion Value for such VWAP Trading Day over the Daily Principal Portion for such VWAP Trading Day, divided by (ii) the Daily VWAP for such VWAP Trading Day. </font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">3.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Ratification of Indenture; Supplemental Indenture Part of Indenture</font><font style="font-family:inherit;font-size:12pt;">.  Except as expressly amended hereby, the Indenture is in all respects ratified and confirmed and all the terms, conditions and provisions thereof shall remain in full force and effect.  Every reference in the Indenture to the Indenture shall hereby be deemed to mean the Indenture as supplemented by this Supplemental Indenture.  This Supplemental Indenture shall form a part of the Indenture for all purposes, and every holder of Notes heretofore or hereafter authenticated and delivered shall </font></div><div><br></div><div><div style="line-height:120%;text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"><br></font></div></div><hr style="page-break-after:always"><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;padding-bottom:16px;text-align:left;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">be bound hereby.  The Trustee makes no representation or warranty as to the validity or sufficiency of this Supplemental Indenture.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">4.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Governing Law</font><font style="font-family:inherit;font-size:12pt;">.  THE INTERNAL LAWS OF THE STATE OF NEW YORK WILL GOVERN AND BE USED TO CONSTRUE THIS SUPPLEMENTAL INDENTURE AND WITHOUT GIVING EFFECT TO APPLICABLE PRINCIPLES OF CONFLICTS OF LAW TO THE EXTENT THAT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION WOULD BE REQUIRED THEREBY.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">5.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Counterparts</font><font style="font-family:inherit;font-size:12pt;">.  The parties may sign any number of copies of this Supplemental Indenture.  Each signed copy shall be an original, but all of them together represent the same agreement.  Delivery of an executed counterpart of a signature page to this Supplemental Indenture by facsimile, email or other electronic means shall be effective as delivery of a manually executed counterpart of this Supplemental Indenture.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">6.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Effect of Headings</font><font style="font-family:inherit;font-size:12pt;">.  The Section headings herein have been inserted for the convenience of reference only, are not to be considered a part of this Supplemental Indenture and shall in no way modify or restrict any of the terms or provisions hereof.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">7.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">The Trustee</font><font style="font-family:inherit;font-size:12pt;">.  The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture or for or in respect of the recitals contained herein, all of which recitals are made solely by the Issuer.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">8.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Successors</font><font style="font-family:inherit;font-size:12pt;">.  All agreements of the Issuer in this Supplemental Indenture shall bind its successors, except as otherwise provided in the Indenture.  All agreements of the Trustee in this Supplemental Indenture shall bind its successors.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">9.</font><font style="font-family:inherit;font-size:10pt;">&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:12pt;text-decoration:underline;">Severability</font><font style="font-family:inherit;font-size:12pt;">.  In case any provision in this Supplemental Indenture shall be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.</font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed and attested, all as of the date first above written.</font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div></div><hr style="page-break-after:always"><div><div style="line-height:144%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div></div><div><br></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">LIGAND PHARMACEUTICALS INCORPORATED,</font><font style="font-family:inherit;font-size:10pt;">&#32;as the Issuer</font></div><div style="line-height:120%;text-align:left;padding-left:288px;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">By: </font><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Charles Berkman&#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:10pt;">&#32;</font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Name:  Charles Berkman <br>Title:   Senior Vice President, General Counsel and Secretary</font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:left;padding-left:288px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;font-weight:bold;">WILMINGTON TRUST, NATIONAL ASSOCIATION</font><font style="font-family:inherit;font-size:12pt;">, as Trustee</font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div style="line-height:120%;text-align:left;padding-left:288px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">By:  </font><font style="font-family:inherit;font-size:10pt;text-decoration:underline;">/s/ Lynn Steiner                                            &#160;&#160;&#160;&#160;</font><font style="font-family:inherit;font-size:10pt;">&#32;<br>Name:  Lynn Steiner <br>Title:    Vice President</font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;"><br></font></div><div style="line-height:120%;padding-bottom:16px;text-align:center;text-indent:48px;font-size:12pt;"><font style="font-family:inherit;font-size:12pt;">[Remainder of page intentionally left blank]</font></div><div style="line-height:120%;text-align:left;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br></font></div><div><br></div><div></div>	</body>
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