<SEC-DOCUMENT>0001104659-25-021425.txt : 20250306
<SEC-HEADER>0001104659-25-021425.hdr.sgml : 20250306
<ACCEPTANCE-DATETIME>20250306174105
ACCESSION NUMBER:		0001104659-25-021425
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20250306
DATE AS OF CHANGE:		20250306

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Waystar Holding Corp.
		CENTRAL INDEX KEY:			0001990354
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
		ORGANIZATION NAME:           	06 Technology
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-94694
		FILM NUMBER:		25716585

	BUSINESS ADDRESS:	
		STREET 1:		1550 DIGITAL DRIVE, #300
		CITY:			LEHI
		STATE:			UT
		ZIP:			84043
		BUSINESS PHONE:		844-492-9782

	MAIL ADDRESS:	
		STREET 1:		1550 DIGITAL DRIVE, #300
		CITY:			LEHI
		STATE:			UT
		ZIP:			84043

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CANADA PENSION PLAN INVESTMENT BOARD
		CENTRAL INDEX KEY:			0001283718
		ORGANIZATION NAME:           	
		IRS NUMBER:				980361334
		STATE OF INCORPORATION:			A6
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		ONE QUEEN STREET EAST
		STREET 2:		STE 2500
		CITY:			TORONTO ONTARIO
		STATE:			A6
		ZIP:			M5C2W5
		BUSINESS PHONE:		416 972 8226

	MAIL ADDRESS:	
		STREET 1:		ONE QUEEN STREET EAST
		STREET 2:		STE 2500
		CITY:			TORONTO ONTARIO
		STATE:			A6
		ZIP:			M5C2W5
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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  <headerData>
    <submissionType>SCHEDULE 13G/A</submissionType>
    <previousAccessionNumber>0001104659-24-117985</previousAccessionNumber>
    <filerInfo>
      <filer>
        <filerCredentials>
          <!-- Field: Pseudo-Tag; ID: Name; Data: CANADA PENSION PLAN INVESTMENT BOARD -->
          <cik>0001283718</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <amendmentNo>1</amendmentNo>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>02/24/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001990354</issuerCik>
        <issuerName>Waystar Holding Corp.</issuerName>
        <issuerCusip>946784105</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>1550 Digital Drive #300</com:street1>
          <com:city>Lehi</com:city>
          <com:stateOrCountry>UT</com:stateOrCountry>
          <com:zipCode>84043</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(d)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Canada Pension Plan Investment Board</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>29692286.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>29692286.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>29692286.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>17.2</classPercent>
      <typeOfReportingPerson>FI</typeOfReportingPerson>
      <comments>Item 11 is calculated based on a total of 172,151,839 shares of common stock of the issuer outstanding as of February 12, 2025, as disclosed in the issuer's prospectus filed with the Securities and Exchange Commission on February 21, 2025.

Shares reported on this Schedule 13G are held directly by CPP Investment Board Private Holdings (4) Inc., a wholly-owned subsidiary of Canada Pension Plan Investment Board.</comments>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>CPP Investment Board Private Holdings (4) Inc.</reportingPersonName>
      <citizenshipOrOrganization>Z4</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>29692286.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>29692286.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>29692286.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>17.2</classPercent>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
      <comments>Item 11 is calculated based on a total of 172,151,839 shares of common stock of the issuer outstanding as of February 12, 2025, as disclosed in the issuer's prospectus filed with the Securities and Exchange Commission on February 21, 2025.

Shares reported on this Schedule 13G are held directly by CPP Investment Board Private Holdings (4) Inc., a wholly-owned subsidiary of Canada Pension Plan Investment Board.</comments>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Waystar Holding Corp.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>1550 Digital Drive #300 Lehi, UT, 84043</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>Canada Pension Plan Investment Board

CPP Investment Board Private Holdings (4) Inc.</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>One Queen Street East, Suite 2500, Toronto, Ontario M5C 2W5

Canada</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Canada (Federal)</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>Y</notApplicableFlag>
      </item3>
      <item4>
        <amountBeneficiallyOwned>See Item 9 on pages 2 and 3.</amountBeneficiallyOwned>
        <classPercent>See Item 11 on pages 2 and 3.</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>See Item 5 on pages 2 and 3.</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>See Item 6 on pages 2 and 3.</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>See Item 7 on pages 2 and 3.</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>See Item 8 on pages 2 and 3.</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>Y</notApplicableFlag>
      </item10>
    </items>
    <exhibitInfo>99.1  Power of Attorney</exhibitInfo>
    <signatureInformation>
      <reportingPersonName>Canada Pension Plan Investment Board</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Kathryn Daniels</signature>
        <title>Kathryn Daniels, Managing Director, Head of Compliance</title>
        <date>03/06/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>CPP Investment Board Private Holdings (4) Inc.</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Pierre Abinakle</signature>
        <title>Pierre Abinakle, Director</title>
        <date>03/06/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>

</edgarSubmission>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>tm257840d1_ex99-1.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
<HTML>
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<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="text-align: right; margin: 0"><B>Exhibit 99.1</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POWER OF ATTORNEY</B></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; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"><B>KNOW
ALL PERSONS BY THESE PRESENTS&nbsp;</B></FONT>that the undersigned&nbsp;(<B>&quot;CPPIB&quot;</B>)<B>&nbsp;</B>does hereby make, constitute
and appoint&nbsp;each of <B>KATHRYN DANIELS</B>, <B>LOGAN WILLIS </B>and <B>PIERRE ABINAKLE</B>,&nbsp;as its true and lawful attorneys-in-fact
(the&nbsp;<B>&quot;Attorneys-In-Fact&quot;</B>&nbsp;and each an&nbsp;<B>&quot;Attorney-In-Fact&quot;</B>),&nbsp;to execute and deliver
in its name and on its behalf, any and all filings, be they written or oral, required to be made by CPPIB with respect to securities which
may be deemed to be beneficially owned by CPPIB under:</P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 0.75in">&nbsp;</TD>
    <TD STYLE="width: 0.25in; font-size: 10pt"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD>
    <TD STYLE="font-size: 10pt; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Section&nbsp;13 of the Securities Exchange Act of 1934, as amended (the&nbsp;<B>&quot;Exchange Act&quot;</B>),<B>&nbsp;</B>including those filings required to be submitted on Schedule 13D or Schedule 13G or any amendments thereto&nbsp;(<B>&quot;Exchange Act Filings&quot;</B>),</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 0.75in">&nbsp;</TD>
    <TD STYLE="width: 0.25in; font-size: 10pt"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD>
    <TD STYLE="font-size: 10pt; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">do and perform any and all acts for and on behalf of CPPIB which an Attorney-In-Fact determines may be necessary or desirable to complete and execute any such Exchange Act Filings, and timely file such document with the Securities and Exchange Commission; and</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 0.75in">&nbsp;</TD>
    <TD STYLE="width: 0.25in; font-size: 10pt"><FONT STYLE="font-family: Symbol; font-size: 10pt">&middot;</FONT></TD>
    <TD STYLE="font-size: 10pt; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">take any other action of any type whatsoever in connection with the foregoing which, in the opinion of an Attorney-In-Fact, may be of benefit to, in the best interest of, or legally required by, CPPIB (it being understood that the documents executed by an Attorney-In-Fact on behalf of CPPIB pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such Attorney-In-Fact may approve in the Attorney-In-Fact's sole discretion).</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; text-align: justify; text-indent: 0.5in">CPPIB hereby grants to each
Attorney-In-Fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to
be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as CPPIB might or could do
if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that each Attorney-In-Fact,
or each Attorney-In-Fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this Power of Attorney and the
rights and powers herein granted.</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; text-align: justify; text-indent: 0.5in">This Power of Attorney shall
remain in full force and effect until either revoked in writing by CPPIB or until such time as the person to whom power of attorney has
been hereby granted ceases to be an employee of CPPIB.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This Power of Attorney supersedes
and replaces the Power of Attorney in respect of Exchange Act Filings executed by CPPIB on February 14, 2024 (the &ldquo;<B>February 2024
PoA</B>&rdquo;). For the avoidance of doubt, the February 2024 PoA is hereby revoked and terminated.</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; text-align: justify; text-indent: 0.5in">This Power of Attorney may
be executed in any number of counterparts all of which taken together shall constitute one and the same instrument.</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; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-size: 10pt"><B>IN
WITNESS WH EREOF,&nbsp;</B></FONT>the undersigned hereby executes this Power of Attorney effective as of the date set forth below.</P>

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>CANADA</B></FONT><FONT STYLE="font-family: Times New Roman, Times, Serif">&#8239;<B>PENSION PLAN INVESTMENT BOARD</B>&#8239;</FONT></TD>
    <TD>&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="2">&nbsp;</TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></TD>
    <TD STYLE="width: 45%; border-bottom: black 1pt solid"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Patrice Walch-Watson</FONT></TD>
    <TD STYLE="width: 50%; text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Name:</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Patrice Walch-Watson</FONT></TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Title:</FONT></TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Senior Managing Director, General Counsel&nbsp;&amp; Corporate Secretary</FONT></TD>
    <TD STYLE="text-align: justify">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Date:&#8239;</FONT></TD>
    <TD STYLE="vertical-align: top"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">November 14, 2024</FONT></TD>
    <TD>&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4in; text-align: right"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4in; text-align: right"><B></B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4in; text-align: right"><B>&nbsp;</B></P>

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