<SEC-DOCUMENT>0001437749-15-011304.txt : 20150529
<SEC-HEADER>0001437749-15-011304.hdr.sgml : 20150529
<ACCEPTANCE-DATETIME>20150529133054
ACCESSION NUMBER:		0001437749-15-011304
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		2
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20141231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20141231
</ITEM>
</RULE>
FILED AS OF DATE:		20150529
DATE AS OF CHANGE:		20150529

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PDF SOLUTIONS INC
		CENTRAL INDEX KEY:			0001120914
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
		IRS NUMBER:				251701361
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-31311
		FILM NUMBER:		15898526

	BUSINESS ADDRESS:	
		STREET 1:		333 WEST SAN CARLOS STREET
		STREET 2:		SUITE 700
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95110
		BUSINESS PHONE:		4082807900

	MAIL ADDRESS:	
		STREET 1:		333 WEST SAN JOSE STREET
		STREET 2:		SUITE 700
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95110
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>pdfs20150529_sd.htm
<DESCRIPTION>FORM SD
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<P id=PARA1 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">UNITED STATES</FONT></P>
<P style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25">&nbsp;</P>
<P id=PARA2 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">SECURITIES AND EXCHANGE COMMISSION</FONT></P>
<P style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25">&nbsp;</P>
<P id=PARA3 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">WASHINGTON, D.C. 20549</FONT></P>
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<P style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">FORM SD</FONT></P>
<P style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25">&nbsp;</P>
<P id=PARA6 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">SPECIALIZED DISCLOSURE REPORT</FONT></P>
<P style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25">&nbsp;</P>
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<P id=PARA7 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">PDF SOLUTIONS, INC. </FONT></P></TD></TR>
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<P id=PARA8 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(Exact Name of Registrant as Specified in its Charter) </FONT></P></TD></TR>
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<P id=PARA10 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Delaware </FONT></P></TD>
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<P id=PARA11 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">000-31311 </FONT></P></TD>
<TD style="WIDTH: 33%; VERTICAL-ALIGN: middle">
<P id=PARA12 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">25-1701361 </FONT></P></TD></TR>
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<P id=PARA13 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(State or Other</FONT></P></TD>
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<P id=PARA14 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(Commission File Number) </FONT></P></TD>
<TD style="WIDTH: 33%; VERTICAL-ALIGN: middle">
<P id=PARA15 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(IRS Employer </FONT></P></TD></TR>
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<P id=PARA16 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Jurisdiction of </FONT></P></TD>
<TD style="WIDTH: 33%; VERTICAL-ALIGN: middle">&nbsp; </TD>
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<P id=PARA17 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Identification No.) </FONT></P></TD></TR>
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<P id=PARA18 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Incorporation) </FONT></P></TD>
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<P id=PARA20 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">333 West San Carlos Street, Suite 1000 </FONT></P></TD></TR>
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<TD style="WIDTH: 100%; VERTICAL-ALIGN: middle">&nbsp;</TD></TR>
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<P id=PARA21 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">San Jose CA 95110 </FONT></P></TD></TR>
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<TD style="WIDTH: 100%; VERTICAL-ALIGN: middle; BORDER-BOTTOM: #000000 1px solid">&nbsp; </TD></TR>
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<P id=PARA22 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(Address of Principal Executive Offices) (Zip Code) </FONT></P></TD></TR>
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<P id=PARA24 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Gregory Walker, (408) 280-7900 </FONT></P></TD></TR>
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<P id=PARA25 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">(Name and telephone number, including area code, of the person to contact </FONT></P></TD></TR>
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<P id=PARA26 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">in connection with this report) </FONT></P></TD></TR>
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<P id=PARA28 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:</FONT></P>
<P id=PARA29 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"></FONT>&nbsp;</P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">\x\ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2014.</FONT></P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B></B></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"></FONT>&nbsp;</P>
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<P id=PARA123.2 style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&nbsp;</FONT></P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Item 1.01. Conflict Minerals Disclosure and Report</B></FONT></P>
<P id=PARA32 style="MARGIN-BOTTOM: 0pt; MARGIN-TOP: 0pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA33 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">PDF Solutions provides yield improvement technologies and services for the integrated circuit (&#8220;IC&#8221;) manufacturing process life cycle. PDF Solutions offers solutions that are designed to enable clients to lower costs of IC design and manufacture, enhance time to market, and improve profitability by addressing design and manufacturing interactions from product design to initial process ramps to mature manufacturing operations. PDF Solutions&#39; Characterization Vehicle&#174; (CV&#174;) test chips provide the core modeling capabilities, and are used by leading manufacturers in the industry. PDF Solutions&#8217; pdFasTest&#174; parallel testers are specifically tuned to the CV test chips to enable faster test times and orders of magnitude more electrical characterization information than traditional test approaches. </FONT></P>
<P id=PARA34 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">This Specialized Disclosure Form (&#8220;Form SD&#8221;) and a copy of PDF&#8217;s Conflict Minerals Report (filed as Exhibit 1.01 hereto) are being posted to the publicly available Internet site <I><U>www.pdf.com</U></I> upon the filing of this Form SD. </FONT></P>
<P id=PARA35 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><STRONG></STRONG>&nbsp;</P>
<P id=PARA36 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Item 1.02 Exhibits </B></FONT></P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><STRONG></STRONG>&nbsp;</P>
<P id=PARA37 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">PDF&#8217;s Conflict Minerals Report is attached hereto as Exhibit 1.01. </FONT></P>
<P id=PARA38 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>&nbsp;</B></FONT></P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><STRONG></STRONG>&nbsp;</P>
<P id=PARA39 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Item 2.01. Exhibits</B></FONT></P>
<P style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><STRONG></STRONG>&nbsp;</P>
<P id=PARA40 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25; TEXT-INDENT: 27pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">The following exhibit is filed as part of this report:</FONT></P>
<P id=PARA41 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25; TEXT-INDENT: 27pt"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Exhibit 1.01 &#8211; Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.</FONT></P>
<P id=PARA42.1 style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&nbsp;</FONT></P>
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<P id=PARA42.2 style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&nbsp;</FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"></FONT></P>
<P id=PARA45 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">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 duly authorized undersigned.</FONT></P>
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<P id=PARA46 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA47 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA48 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA49 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">PDF Solutions, Inc. </FONT></P></TD></TR>
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<TD style="WIDTH: 44%; VERTICAL-ALIGN: middle">&nbsp; </TD>
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<P id=PARA50 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Date: May 29, 2015&nbsp;</FONT></P></TD>
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<P id=PARA51 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">By: </FONT></P></TD>
<TD style="WIDTH: 54%; VERTICAL-ALIGN: middle">
<P id=PARA52 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><U>/s/ Gregory C. Walker</U>&nbsp;</FONT></P></TD></TR>
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<P id=PARA53 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Gregory C. Walker </FONT></P></TD></TR>
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<P id=PARA54 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">VP, Finance and CFO </FONT></P></TD></TR></TABLE>
<P id=PARA56 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P></BODY></HTML>
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<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>ex1-01.htm
<DESCRIPTION>EXHIBIT 1.01
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<P id=PARA1 style="MARGIN-BOTTOM: 0px; TEXT-ALIGN: right; MARGIN-TOP: 0px"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Exhibit 1.01</B></FONT></P>
<P id=PARA2 style="MARGIN-BOTTOM: 0px; TEXT-ALIGN: left; MARGIN-TOP: 0px"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA58.2 style="MARGIN-BOTTOM: 0px; MARGIN-TOP: 0px"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&nbsp;</FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"></FONT></P>
<P id=PARA61 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Conflict Minerals Report of PDF Solutions, Inc.</B></FONT></P>
<P id=PARA62 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>in Accordance with Rule 13p-1 under the Securities Exchange Act of 1934</B></FONT></P>
<P id=PARA63 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&nbsp;</FONT></P>
<P id=PARA64 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">This is the Conflict Minerals Report of PDF Solutions, Inc. (&#8220;PDF Solutions&#8221; or the &#8220;Company&#8221;) for calendar year 2014 in accordance with Rule 13p-1 (&#8220;Rule 13p-1&#8221;) under the Securities Exchange Act of 1934 (the &#8220;1934 Act&#8221;). Please refer to Rule 13p-1, Form SD and the 1934 Act Release No.&nbsp;34-67716 for definitions to the terms used in this Report, unless otherwise defined herein.</FONT></P>
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<P id=PARA66 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">PDF Solutions provides yield improvement technologies and services for the integrated circuit (&#8220;IC&#8221;) manufacturing process life cycle. PDF Solutions offers solutions that are designed to enable clients to lower costs of IC design and manufacture, enhance time to market, and improve profitability by addressing design and manufacturing interactions from product design to initial process ramps to mature manufacturing operations. PDF Solutions&#8217; Characterization Vehicle&#174; (CV&#174;) test chips provide the core modeling capabilities, and are used by leading manufacturers in the industry.&nbsp;PDF Solutions&#8217; pdFasTest&#174; parallel testers are specifically tuned to the CV test chips to enable faster test times and orders of magnitude more electrical characterization information than traditional test approaches.</FONT></P>
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<P id=PARA68 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Due Diligence (Instructions 1.01(c)(1))</B></FONT></P>
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<P id=PARA70 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><U>Overview</U>: In accordance with the Rule 13p-1, PDF Solutions first undertook due diligence to determine whether Conflict Minerals were part of, or used in the manufacture of, any of its products.</FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><SUP style="vertical-align: baseline; position: relative; bottom:.33em;">&nbsp;1</SUP></FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"> It was determined that tantalum, gold and tin are necessary to the functionality and production of the Company&#8217;s pdFasTest&#174; testers (&#8220;In-Scope Product&#8221;). Accordingly, the Company similarly to the prior year, proceeded with a due diligence process based on the internationally recognized due diligence framework that was developed by the Organization for Economic Cooperation and Development as part of its &#8220;Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas&#8221; (&#8220;<B>OECD Guidance</B>&#8221;) and the Company&#8217;s Conflict Minerals Policy adopted in 2014, which included:&nbsp;</FONT></P>
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<P id=PARA73 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&#9679;</FONT></P></TD>
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<P id=PARA74 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Reviewing and assessing risk in the supply chain; and</FONT></P></TD></TR>
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<P id=PARA79 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">&#9679;</FONT></P></TD>
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<P id=PARA80 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Adopting a strategy to continue responding to risks in the supply chain, including implementation of </FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">internal measures to strengthen Company engagement with suppliers, reporting risk management findings </FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">and implementing the risk management plan measures to exercise due diligence on the source and chain of </FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">custody of those conflict minerals.</FONT></P>
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<P id=PARA86 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><U>Work with Suppliers</U>: In reviewing and assessing risk in the supply chain and implementing measures to strengthen engagement with suppliers and exercising due diligence on the source and chain of custody of the Conflict Minerals, PDF Solutions conducted a reasonable country of origin inquiry to determine whether the Conflict Minerals included in or used in the manufacture of the In-Scope Product in 2014 originated in the Democratic Republic of Congo or an adjoining country (&#8220;Covered Country&#8221;). This inquiry included contacting suppliers of the parts that may contain Conflict Minerals, except for a few large suppliers (U.S. public companies whose statements containing relevant information are available on their websites), and asking them to provide information on the Conflict Minerals contained in each of the parts supplied by that supplier, in particular, the source of the Conflict Minerals, including smelter/refinery information and location of source mines. Each supplier was asked to complete the Electronic Industry Citizenship Coalition Global e-Sustainability Initiative Conflict Minerals Reporting Template.</FONT></P>
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<P id=PARA125 style="TEXT-ALIGN: left; MARGIN: 0pt; LINE-HEIGHT: 1.25"><SUP style="vertical-align: baseline; position: relative; bottom: .33em"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">1</FONT></SUP><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"> Paragraph 1.01(d)(3) of the Rule 13p-1 instructions for Form SD characterizes Conflict Minerals as: (i) columbite-tantalite (coltan), cassiterite, gold, wolframite, or their derivatives, which are limited to tantalum, tin, and tungsten, unless the Secretary of State determines that additional derivatives are financing conflict in the Democratic Republic of the Congo or an adjoining country; or (ii) any other mineral or its derivatives determined by the Secretary of State to be financing conflict in the Democratic Republic of the Congo or an adjoining country.</FONT></P>
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<P id=PARA88 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Some of the suppliers responded to the survey, and PDF Solutions followed up with the unresponsive suppliers. The majority of the suppliers provided their Conflict Mineral Policy to the Company and/or reported that Conflict Minerals were not used by such suppliers. Only one supplier reported that they used Conflict Minerals. A list of the smelters from which our supplier purchased directly or through its suppliers identified as possibly supplying minerals that were incorporated into In-Scope Product during 2014 is included in the Product Description and Related Matters section below. Only one supplier did not respond to the survey, and PDF additionally followed up with them. </FONT></P>
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<P id=PARA90 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><U>Conclusion</U>: Following a reasonable country of origin inquiry and subsequent due diligence, the Company cannot determine whether or not the In-Scope Product qualifies as DRC conflict free.&nbsp; </FONT></P>
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<P id=PARA92 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Product Description and Related Matters (Instructions 1.01(c)(2))</B></FONT></P>
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<P id=PARA94 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><U>Description of In-Scope Product</U>: The In-Scope Product is PDF Solutions&#8217; pdFasTest&#174; testers </FONT><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">and related systems. </FONT></P>
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<P id=PARA96 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><U>Facilities Used to Process Necessary Conflict Minerals in the In-Scope Product</U>: The list below identifies facilities (smelters) that are known to have processed Conflict Minerals used in the In-Scope Product.</FONT></P>
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<P id=PARA98 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><U><B>Tungsten Smelters:</B></U></FONT></P>
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<P id=PARA99 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Smelter Name</B></FONT></P></TD>
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<P id=PARA100 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>Smelter Location</B></FONT></P></TD>
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<P id=PARA101 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><B>ID Number</B></FONT></P></TD></TR>
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<P id=PARA102 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Ganzhou Huaxing Tungsten Products Co., Ltd.</FONT></P></TD>
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<P id=PARA103 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">China</FONT></P></TD>
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<P id=PARA104 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">CID000875</FONT></P></TD></TR>
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<P id=PARA105 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">Xiamen Tungsten Co., Ltd.</FONT></P></TD>
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<P id=PARA106 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">China</FONT></P></TD>
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<P id=PARA107 style="TEXT-ALIGN: center; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif">CID002082</FONT></P></TD></TR></TABLE>
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<P id=PARA111 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><U>Information About Country of Origin of Necessary Conflict Minerals Used in the In-Scope Product</U>: While PDF Solutions has conducted a thorough due diligence and worked closely with its suppliers to survey the supply chain (as described above), we were not able to determine with reasonable certainty the country of origin of the Conflict Minerals used in In-Scope Products.</FONT></P>
<P id=PARA112 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><I>&nbsp;</I></FONT></P>
<P id=PARA113 style="TEXT-ALIGN: justify; MARGIN: 0pt; LINE-HEIGHT: 1.25"><FONT style="FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman, Times, serif"><U>Information About Efforts to Determine Mine or Location of Origin</U>: The description of PDF Solutions&#8217; due diligence exercise set forth above under the heading &#8220;Due Diligence&#8221; covers the Company&#8217;s efforts to determine the mine or location of origin with the greatest possible specificity.</FONT></P>
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