<SEC-DOCUMENT>0000897101-26-000016.txt : 20260106
<SEC-HEADER>0000897101-26-000016.hdr.sgml : 20260106
<ACCEPTANCE-DATETIME>20260106144610
ACCESSION NUMBER:		0000897101-26-000016
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20260106
DATE AS OF CHANGE:		20260106

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Western Asset Investment Grade Opportunity Trust Inc.
		CENTRAL INDEX KEY:			0001462586
		ORGANIZATION NAME:           	
		EIN:				000000000
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1130

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-85688
		FILM NUMBER:		26510766

	BUSINESS ADDRESS:	
		STREET 1:		620 EIGHTH AVENUE
		STREET 2:		47TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018
		BUSINESS PHONE:		888-777-0102

	MAIL ADDRESS:	
		STREET 1:		620 EIGHTH AVENUE
		STREET 2:		47TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Western Asset Investment Grade Defined Opportunity Trust Inc.
		DATE OF NAME CHANGE:	20090423

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SIT INVESTMENT ASSOCIATES INC
		CENTRAL INDEX KEY:			0000769317
		ORGANIZATION NAME:           	
		EIN:				411404829
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		3300 IDS CENTER
		STREET 2:		80 SOUTH EIGHTH STREET
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402
		BUSINESS PHONE:		6123323223

	MAIL ADDRESS:	
		STREET 1:		3300 IDS CENTER
		STREET 2:		80 SOUTH EIGHTH STREET
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>SCHEDULE 13G/A</submissionType>
    <previousAccessionNumber>0000897101-25-000427</previousAccessionNumber>
    <filerInfo>
      <filer>
        <filerCredentials>
          <!-- Field: Pseudo-Tag; ID: Name; Data: SIT INVESTMENT ASSOCIATES INC -->
          <cik>0000769317</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>


    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <amendmentNo>1</amendmentNo>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>12/31/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0001462586</issuerCik>
        <issuerName>Western Asset Investment Grade Opportunity Trust Inc.</issuerName>
        <issuerCusip>95790A101</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>620 Eighth Avenue</com:street1>
          <com:street2>47th Floor</com:street2>
          <com:city>New York</com:city>
          <com:stateOrCountry>NY</com:stateOrCountry>
          <com:zipCode>10018</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Sit Investment Associates, Inc.</reportingPersonName>
      <memberGroup>b</memberGroup>
      <citizenshipOrOrganization>MN</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>767986.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>767986.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>767986.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>12.8</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Sit Fixed Income Advisors II, LLC</reportingPersonName>
      <memberGroup>b</memberGroup>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0.00</soleVotingPower>
        <sharedVotingPower>767986.00</sharedVotingPower>
        <soleDispositivePower>0.00</soleDispositivePower>
        <sharedDispositivePower>767986.00</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>767986.00</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>12.8</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>Western Asset Investment Grade Opportunity Trust Inc.</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>620 Eighth Avenue, 47th Floor, New York, NY 10018</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>Sit Investment Associates, Inc.
Sit Fixed Income Advisors II, LLC</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>c/o Sit Investment Associates, Inc.
80 South Eighth Street, Suite 3300
Minneapolis, MN  55402</principalBusinessOfficeOrResidenceAddress>
        <citizenship>Sit Investment Associates, Inc.   Minnesota Corporation
Sit Fixed Income Advisors II, LLC    Delaware LLC</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>IA</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>See response to item 9 on each cover page.</amountBeneficiallyOwned>
        <classPercent>See response to item 11 on each cover page.</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>See response to item 5 on each cover page.</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>See response to item 6 on each cover page.</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>See response to item 7 on each cover page.</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>See response to item 8 on each cover page.


The ownership percentages reported are based on 5,993,650 shares of common stock outstanding as of May 31, 2025, as reported in the Issuer's Report on Form N-CSRS filed with the Securities Exchange Commission.

Sit Investment Associates, Inc. ("SIA") is an investment adviser registered under section 203 of the Investment Advisers Act of 1940.  Sit Fixed Income Advisors II, LLC ("SFI") is an investment adviser registered under section 203 of the Investment Advisers Act of 1940 and a subsidiary of SIA.  SIA and SFI provide investment management services to client accounts ("Accounts").  In their roles as investment advisers SIA and SFI possess shared voting and investment power over securities of the Issuer described in this schedule 13G owned by the Accounts and may be deemed to be the beneficial owner of such shares of the Issuer owned by the Accounts.  All securities reported in this schedule 13G are owned by the Accounts.  Pursuant to Rule 13d-4 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), SIA and SFI disclaim beneficial ownership of such securities.</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
      </item5>
      <item6>
        <notApplicableFlag>N</notApplicableFlag>
        <ownershipMoreThan5PercentOnBehalfOfAnotherPerson>The Accounts are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities.

Except as may be indicated if this is a joint filing with a registered investment company managed by SIA or SFI, not more than 5% of the class of such securities is owned by any one Account subject to the investment advice of SIA or SFI.</ownershipMoreThan5PercentOnBehalfOfAnotherPerson>
      </item6>
      <item7>
        <notApplicableFlag>Y</notApplicableFlag>
      </item7>
      <item8>
        <notApplicableFlag>Y</notApplicableFlag>
      </item8>
      <item9>
        <notApplicableFlag>Y</notApplicableFlag>
      </item9>
      <item10>
        <notApplicableFlag>N</notApplicableFlag>
        <certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.</certifications>
      </item10>
    </items>
    <signatureInformation>
      <reportingPersonName>Sit Investment Associates, Inc.</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Paul E. Rasmussen</signature>
        <title>Paul Rasmussen / Vice President</title>
        <date>01/06/2026</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Sit Fixed Income Advisors II, LLC</reportingPersonName>
      <signatureDetails>
        <signature>/s/ Paul E. Rasmussen</signature>
        <title>Paul Rasmussen / Vice President</title>
        <date>01/06/2026</date>
      </signatureDetails>
    </signatureInformation>
  </formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
