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<!--Generated by Broadridge Transform (tm) - http://www.broadridge.com-->
<!--Created: Fri Aug 28 20:03:56 UTC 2026-->
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      <liveTestFlag>LIVE</liveTestFlag>
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        <issuerCredentials>
          <cik>0000929408</cik>
          <ccc>XXXXXXXX</ccc>
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      <periodOfReport>06/30/2026</periodOfReport>
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        <name>WARBURG PINCUS &amp; CO.</name>
        <phoneNumber>212-878-0600</phoneNumber>
        <address>
          <common:street1>450 Lexington Avenue</common:street1>
          <common:city>NEW YORK</common:city>
          <common:stateOrCountry>NY</common:stateOrCountry>
          <common:zipCode>10017</common:zipCode>
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      <agentForService>
        <name>Harsha G. Marti</name>
        <address>
          <common:street1>450 Lexington Avenue</common:street1>
          <common:city>NEW YORK</common:city>
          <common:stateOrCountry>NY</common:stateOrCountry>
          <common:zipCode>10017</common:zipCode>
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        <reportType>INSTITUTIONAL MANAGER NOTICE REPORT</reportType>
        <noticeExplanation>REPORTING PERSON DID NOT EXERCISE VOTING</noticeExplanation>
        <confidentialTreatment>N</confidentialTreatment>
      </reportInfo>
      <fileNumber>028-04826</fileNumber>
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      <reportingPerson>WARBURG PINCUS &amp; CO.</reportingPerson>
      <txSignature>Harsha G. Marti</txSignature>
      <txPrintedSignature>Harsha G. Marti</txPrintedSignature>
      <txTitle>Managing Director and Chief Legal Officer</txTitle>
      <txAsOfDate>08/28/2026</txAsOfDate>
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