<SEC-DOCUMENT>0000895421-25-000346.txt : 20250506
<SEC-HEADER>0000895421-25-000346.hdr.sgml : 20250506
<ACCEPTANCE-DATETIME>20250506152005
ACCESSION NUMBER:		0000895421-25-000346
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20250506
DATE AS OF CHANGE:		20250506

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			KIRBY CORP
		CENTRAL INDEX KEY:			0000056047
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER TRANSPORTATION [4400]
		ORGANIZATION NAME:           	01 Energy & Transportation
		EIN:				741884980
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-13392
		FILM NUMBER:		25916855

	BUSINESS ADDRESS:	
		STREET 1:		55 WAUGH DRIVE SUITE 1000
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77007
		BUSINESS PHONE:		7134351000

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 1745
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77251

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KIRBY EXPLORATION CO INC
		DATE OF NAME CHANGE:	19900510

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MORGAN STANLEY
		CENTRAL INDEX KEY:			0000895421
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		ORGANIZATION NAME:           	02 Finance
		EIN:				363145972
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	BUSINESS ADDRESS:	
		STREET 1:		1585 BROADWAY
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		212-761-4000

	MAIL ADDRESS:	
		STREET 1:		1585 BROADWAY
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MORGAN STANLEY DEAN WITTER & CO
		DATE OF NAME CHANGE:	19980326

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DEAN WITTER DISCOVER & CO
		DATE OF NAME CHANGE:	19960315
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13G
<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" xmlns:g="http://xml.ms.com/ns/itlnc/filelink/US13GFiling/v1.0" xmlns:p="http://www.sec.gov/edgar/schedule13g">
  <headerData>
    <submissionType>SCHEDULE 13G</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0000895421</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>Common Stock</securitiesClassTitle>
      <eventDateRequiresFilingThisStatement>03/31/2025</eventDateRequiresFilingThisStatement>
      <issuerInfo>
        <issuerCik>0000056047</issuerCik>
        <issuerName>KIRBY CORP</issuerName>
        <issuerCusip>497266106</issuerCusip>
        <issuerPrincipalExecutiveOfficeAddress>
          <com:street1>55 WAUGH DRIVE SUITE 1000</com:street1>
          <com:city>HOUSTON</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>77007</com:zipCode>
        </issuerPrincipalExecutiveOfficeAddress>
      </issuerInfo>
      <designateRulesPursuantThisScheduleFiled>
        <designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
      </designateRulesPursuantThisScheduleFiled>
    </coverPageHeader>
    <coverPageHeaderReportingPersonDetails>


      <reportingPersonName>Morgan Stanley</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>3052649</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>3254741</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>3386518</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>6.0</classPercent>
      <typeOfReportingPerson>HC</typeOfReportingPerson>
      <typeOfReportingPerson>CO</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <coverPageHeaderReportingPersonDetails>

      <reportingPersonName>Atlanta Capital Management Company, LLC</reportingPersonName>
      <citizenshipOrOrganization>DE</citizenshipOrOrganization>
      <reportingPersonBeneficiallyOwnedNumberOfShares>
        <soleVotingPower>0</soleVotingPower>
        <sharedVotingPower>2736443</sharedVotingPower>
        <soleDispositivePower>0</soleDispositivePower>
        <sharedDispositivePower>2923410</sharedDispositivePower>
      </reportingPersonBeneficiallyOwnedNumberOfShares>
      <reportingPersonBeneficiallyOwnedAggregateNumberOfShares>3043893</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
      <aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
      <classPercent>5.3</classPercent>
      <typeOfReportingPerson>IA</typeOfReportingPerson>
    </coverPageHeaderReportingPersonDetails>
    <items>
      <item1>
        <issuerName>KIRBY CORP</issuerName>
        <issuerPrincipalExecutiveOfficeAddress>55 WAUGH DRIVE SUITE 1000, HOUSTON, TX, 77007</issuerPrincipalExecutiveOfficeAddress>
      </item1>
      <item2>
        <filingPersonName>1: Morgan Stanley 2: Atlanta Capital Management Company, LLC</filingPersonName>
        <principalBusinessOfficeOrResidenceAddress>1: 1585 Broadway, New York, NY 10036 ;2: 1075 Peachtree Street, Suite 2100, Atlanta, GA 30309</principalBusinessOfficeOrResidenceAddress>
        <citizenship>1: Delaware 2: Delaware</citizenship>
      </item2>
      <item3>
        <notApplicableFlag>N</notApplicableFlag>
        <typeOfPersonFiling>IA</typeOfPersonFiling>
        <typeOfPersonFiling>HC</typeOfPersonFiling>
      </item3>
      <item4>
        <amountBeneficiallyOwned>See the response(s) to Item 9 on the attached cover page(s).</amountBeneficiallyOwned>
        <classPercent>6.0</classPercent>
        <numberOfSharesPersonHas>
          <solePowerOrDirectToVote>See the response(s) to Item 5 on the attached cover page(s).</solePowerOrDirectToVote>
          <sharedPowerOrDirectToVote>See the response(s) to Item 6 on the attached cover page(s).</sharedPowerOrDirectToVote>
          <solePowerOrDirectToDispose>See the response(s) to Item 7 on the attached cover page(s).</solePowerOrDirectToDispose>
          <sharedPowerOrDirectToDispose>See the response(s) to Item 8 on the attached cover page(s).</sharedPowerOrDirectToDispose>
        </numberOfSharesPersonHas>
      </item4>
      <item5>
        <notApplicableFlag>Y</notApplicableFlag>
        <classOwnership5PercentOrLess>N</classOwnership5PercentOrLess>
      </item5>
      <item6>
        <notApplicableFlag>Y</notApplicableFlag>
      </item6>
      <item7>
        <notApplicableFlag>N</notApplicableFlag>
        <subsidiaryIdentificationAndClassification>See Exhibit 99.2</subsidiaryIdentificationAndClassification>
      </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.

					*  In Accordance with the Securities and Exchange Commission Release
					No. 34-39538 (January 12, 1998) (the "Release"), this filing reflects the
					securities beneficially owned, or that may be deemed to be beneficially owned,
					by certain operating units (collectively, the "MS Reporting Units") of Morgan
					Stanley and its subsidiaries and affiliates (collectively, "MS").  This filing
					does not reflect securities, if any, beneficially owned by any operating units
					of MS whose ownership of securities is disaggregated from that of the MS
					Reporting Units in accordance with the Release.
					</certifications>
      </item10>
    </items>
    <exhibitInfo>

					EXHIBIT NO.                         EXHIBITS
					------------------         ------------------------------------

					99.1                       Joint Filing Agreement

					99.2                       Item 7 Information

					*  Attention. Intentional misstatements or omissions of fact constitute federal
					criminal violations (see 18 U.S.C. 1001).
				</exhibitInfo>
    <signatureInformation>
      <reportingPersonName>Morgan Stanley</reportingPersonName>
      <signatureDetails>
        <signature>Chris O'Hara</signature>
        <title>Authorized Signatory, Morgan Stanley</title>
        <date>05/06/2025</date>
      </signatureDetails>
    </signatureInformation>
    <signatureInformation>
      <reportingPersonName>Atlanta Capital Management Company, LLC</reportingPersonName>
      <signatureDetails>
        <signature>Kelly Williams</signature>
        <title>Authorized Signatory, Atlanta Capital Management Company, LLC</title>
        <date>05/06/2025</date>
      </signatureDetails>
    </signatureInformation>
  </formData>

</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1 CHARTER
<SEQUENCE>2
<FILENAME>EXHIBIT_NO.99.1.txt
<DESCRIPTION>EXHIBIT NO. 99.1 TO SCHEDULE 13G JOINT FILING AGREEMENT
<TEXT>
CUSIP No.497266106                     13G
--------------------------------------------------------------------------------

                       EXHIBIT NO. 99.1 TO SCHEDULE 13G
                            JOINT FILING AGREEMENT
              ---------------------------------------------------


                              May 06, 2025
              ---------------------------------------------------

              MORGAN STANLEY and Atlanta Capital Management Company, LLC hereby

              agree that, unless differentiated, this Schedule 13G is filed on

              behalf of each of the parties.


           MORGAN STANLEY

           BY: /s/ Chris O'Hara
           ---------------------------------------------------------------------
           Chris O'Hara/Authorized Signatory, Morgan Stanley

           Atlanta Capital Management Company, LLC

           BY: /s/ Kelly Williams
           ---------------------------------------------------------------------
           Kelly Williams/Authorized Signatory,
           Atlanta Capital Management Company, LLC


*  Attention. Intentional misstatements or omissions of fact constitute federal
criminal violations (see 18 U.S.C. 1001).
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2 OPIN COUNSEL
<SEQUENCE>3
<FILENAME>EXHIBIT_NO.99.2.txt
<DESCRIPTION>EXHIBIT NO. 99.2 ITEM 7 INFORMATION
<TEXT>
CUSIP No.497266106                     13G
--------------------------------------------------------------------------------

                                 EXHIBIT NO. 99.2
                                ------------------

                                ITEM 7 INFORMATION


             The securities being reported on by Morgan Stanley as a parent

     holding company are owned, or may be deemed to be beneficially owned, by

     Atlanta Capital Management Company, LLC, a wholly-owned subsidiary of

     Morgan Stanley.

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
