<SEC-DOCUMENT>0000899140-25-000530.txt : 20250408
<SEC-HEADER>0000899140-25-000530.hdr.sgml : 20250408
<ACCEPTANCE-DATETIME>20250408172944
ACCESSION NUMBER:		0000899140-25-000530
CONFORMED SUBMISSION TYPE:	SCHEDULE 13G
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20250408
DATE AS OF CHANGE:		20250408

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Cayson Acquisition Corp
		CENTRAL INDEX KEY:			0002024203
		STANDARD INDUSTRIAL CLASSIFICATION:	BLANK CHECKS [6770]
		ORGANIZATION NAME:           	05 Real Estate & Construction
		EIN:				000000000
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-94630
		FILM NUMBER:		25823072

	BUSINESS ADDRESS:	
		STREET 1:		205 W 37TH ST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018
		BUSINESS PHONE:		203-998-5540

	MAIL ADDRESS:	
		STREET 1:		205 W 37TH ST
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10018

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BERKLEY W R CORP
		CENTRAL INDEX KEY:			0000011544
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		ORGANIZATION NAME:           	02 Finance
		EIN:				221867895
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13G

	BUSINESS ADDRESS:	
		STREET 1:		475 STEAMBOAT ROAD
		STREET 2:		.
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		2036293000

	MAIL ADDRESS:	
		STREET 1:		475 STEAMBOAT ROAD
		STREET 2:		.
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
</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">
<headerData>
<submissionType>SCHEDULE 13G</submissionType>
<filerInfo>
<filer>
<filerCredentials>
<cik>0000011544</cik>
<ccc>XXXXXXXX</ccc>
</filerCredentials>
</filer>
<liveTestFlag>LIVE</liveTestFlag>



</filerInfo>
</headerData>
<formData>
<coverPageHeader>
<securitiesClassTitle>Ordinary Shares, par value $0.0001 per share</securitiesClassTitle>
<eventDateRequiresFilingThisStatement>03/31/2025</eventDateRequiresFilingThisStatement>
<issuerInfo>
<issuerCik>0002024203</issuerCik>
<issuerName>Cayson Acquisition Corp</issuerName>
<issuerCusip>G1993W109</issuerCusip>
<issuerPrincipalExecutiveOfficeAddress>
<com:street1>420 Lexington Avenue, Suite 2446</com:street1>
<com:city>New York</com:city>
<com:stateOrCountry>X1</com:stateOrCountry>
<com:zipCode>10170</com:zipCode>
</issuerPrincipalExecutiveOfficeAddress>
</issuerInfo>
<designateRulesPursuantThisScheduleFiled>
<designateRulePursuantThisScheduleFiled>Rule 13d-1(b)</designateRulePursuantThisScheduleFiled>
</designateRulesPursuantThisScheduleFiled>
</coverPageHeader>
<coverPageHeaderReportingPersonDetails>

<reportingPersonName>W. R. Berkley Corporation</reportingPersonName>
<citizenshipOrOrganization>DE</citizenshipOrOrganization>
<reportingPersonBeneficiallyOwnedNumberOfShares>
<soleVotingPower>0</soleVotingPower>
<sharedVotingPower>763302</sharedVotingPower>
<soleDispositivePower>0</soleDispositivePower>
<sharedDispositivePower>763302</sharedDispositivePower>
</reportingPersonBeneficiallyOwnedNumberOfShares>
<reportingPersonBeneficiallyOwnedAggregateNumberOfShares>763302</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
<aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
<classPercent>10.4</classPercent>
<typeOfReportingPerson>CO</typeOfReportingPerson>
</coverPageHeaderReportingPersonDetails>
<coverPageHeaderReportingPersonDetails>

<reportingPersonName>Berkley Insurance Company</reportingPersonName>
<citizenshipOrOrganization>DE</citizenshipOrOrganization>
<reportingPersonBeneficiallyOwnedNumberOfShares>
<soleVotingPower>0</soleVotingPower>
<sharedVotingPower>763302</sharedVotingPower>
<soleDispositivePower>0</soleDispositivePower>
<sharedDispositivePower>763302</sharedDispositivePower>
</reportingPersonBeneficiallyOwnedNumberOfShares>
<reportingPersonBeneficiallyOwnedAggregateNumberOfShares>763302</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
<aggregateAmountExcludesCertainSharesFlag>N</aggregateAmountExcludesCertainSharesFlag>
<classPercent>10.4</classPercent>
<typeOfReportingPerson>CO</typeOfReportingPerson>
<typeOfReportingPerson>IC</typeOfReportingPerson>
</coverPageHeaderReportingPersonDetails>
<items>
<item1>
<issuerName>Cayson Acquisition Corp</issuerName>
<issuerPrincipalExecutiveOfficeAddress>420 Lexington Avenue, Suite 2446, New York, United States, 10170</issuerPrincipalExecutiveOfficeAddress>
</item1>
<item2>
<filingPersonName>The information required by Item 2(a) is set forth in Row 1 of the cover page hereto for each Reporting Person and is incorporated herein by reference for each such Reporting Person.</filingPersonName>
<principalBusinessOfficeOrResidenceAddress>The address of each Reporting Person is:&#13;
475 Steamboat Road&#13;
Greenwich, CT 06830</principalBusinessOfficeOrResidenceAddress>
<citizenship>The information required by Item 2(c) is set forth in Row 4 of the cover page hereto for each  Reporting Person and is incorporated herein by reference for each such Reporting Person.</citizenship>
</item2>
<item3>
<notApplicableFlag>N</notApplicableFlag>
<typeOfPersonFiling>IC</typeOfPersonFiling>
</item3>
<item4>
<amountBeneficiallyOwned>The information required by Items 4(a)-(c) is set forth in Rows 5-11 of the cover page hereto for each Reporting Person and is incorporated herein by reference for each such Reporting Person.</amountBeneficiallyOwned>
<classPercent>Calculation of the ownership percentage set forth in Row 11 is based on Issuer's publicly available Form 10-K filed March 26, 2025, which states that Issuer had 7,328,341 ordinary shares outstanding as of March 26, 2025 - 10.4</classPercent>
<numberOfSharesPersonHas>
<solePowerOrDirectToVote>0</solePowerOrDirectToVote>
<sharedPowerOrDirectToVote>763,302</sharedPowerOrDirectToVote>
<solePowerOrDirectToDispose>0</solePowerOrDirectToDispose>
<sharedPowerOrDirectToDispose>763,302</sharedPowerOrDirectToDispose>
</numberOfSharesPersonHas>
</item4>
<item5>
<notApplicableFlag>Y</notApplicableFlag>
</item5>
<item6>
<notApplicableFlag>Y</notApplicableFlag>
</item6>
<item7>
<notApplicableFlag>N</notApplicableFlag>
<subsidiaryIdentificationAndClassification>See Exhibit 99.1.</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.</certifications>
</item10>
</items>
<signatureInformation>
<reportingPersonName>W. R. Berkley Corporation</reportingPersonName>
<signatureDetails>
<signature>/s/ Richard M. Baio</signature>
<title>Richard M. Baio, Executive Vice President and Chief Financial Officer</title>
<date>04/08/2025</date>
</signatureDetails>
</signatureInformation>
<signatureInformation>
<reportingPersonName>Berkley Insurance Company</reportingPersonName>
<signatureDetails>
<signature>/s/ Richard M. Baio</signature>
<title>Richard M. Baio, Executive Vice President and Treasurer</title>
<date>04/08/2025</date>
</signatureDetails>
</signatureInformation>
</formData>

</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>w121951133a.htm
<DESCRIPTION>IDENTITY AND THE ITEM 3 CLASSIFICATION OF THE RELEVANT SUBSIDIARY
<TEXT>
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  <head>
    <title></title>
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         Document created using Broadridge PROfile 25.1.1.5279
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  <div>
    <div style="text-align: center; margin-bottom: 12pt; color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif; font-size: 12pt;"><u>EXHIBIT 99.1</u></div>
    <div style="margin-bottom: 12pt; color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif; font-size: 12pt;">The identity and the Item 3 classification of the relevant subsidiary is: Berkley Insurance Company, which
      is an insurance company in accordance with Rule 13d-1(b)(1)(ii)(C).</div>
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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>w121951133b.htm
<DESCRIPTION>AGREEMENT OF REPORTING PERSONS
<TEXT>
<html>
  <head>
    <title></title>
    <!-- Licensed to: Willkie Farr & Gallagher LLP
         Document created using Broadridge PROfile 25.1.1.5279
         Copyright 1995 - 2025 Broadridge -->
  </head>
<body bgcolor="#ffffff" style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; text-align: left; color: #000000;">
  <br>
  <div>
    <div style="text-align: center; margin-bottom: 12pt; color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif; font-size: 12pt;"><u>EXHIBIT 99.2</u></div>
    <div style="text-align: center; margin-bottom: 12pt; color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif; font-size: 12pt;"><u>AGREEMENT OF REPORTING PERSONS</u></div>
    <div style="text-indent: 36pt; margin-bottom: 12pt; color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif; font-size: 12pt;">The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is
      filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned
      acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning it contained therein, but shall not be responsible for the completeness and accuracy of the
      information concerning the others, except to the extent that such person or entity knows or has reason to believe that such information is inaccurate. This agreement may be executed in any number of counterparts and all of such counterparts taken
      together shall constitute one and the same instrument.</div>
    <div style="margin-bottom: 12pt; color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif; font-size: 12pt;">Dated: April 8, 2025</div>
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            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">W. R. BERKLEY CORPORATION</div>
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            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">By:</div>
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            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">/s/ Richard M. Baio</div>
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          <td style="width: 45.72%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 6.16%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 48.12%; vertical-align: top; font-size: 12pt;">
            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">Name: Richard M. Baio</div>
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          <td style="width: 45.72%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 6.16%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 48.12%; vertical-align: top; font-size: 12pt;">
            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">Title: Executive Vice President and Chief Financial Officer</div>
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          <td style="width: 45.72%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 54.28%; vertical-align: top; font-size: 12pt;" colspan="2">&#160;</td>
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            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">BERKLEY INSURANCE COMPANY</div>
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          <td style="width: 45.72%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 54.28%; vertical-align: top; font-size: 12pt;" colspan="2">&#160;</td>
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          <td style="width: 45.72%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 6.16%; vertical-align: top; font-size: 12pt;">
            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">By:</div>
          </td>
          <td style="width: 48.12%; vertical-align: top; border-bottom: 2px solid black; font-size: 12pt;">
            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">/s/ Richard M. Baio</div>
          </td>
        </tr>
        <tr>
          <td style="width: 45.72%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 6.16%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 48.12%; vertical-align: top; font-size: 12pt;">
            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">Name: Richard M. Baio</div>
          </td>
        </tr>
        <tr>
          <td style="width: 45.72%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 6.16%; vertical-align: top; font-size: 12pt;">&#160;</td>
          <td style="width: 48.12%; vertical-align: top; font-size: 12pt;">
            <div style="color: rgb(0, 0, 0); font-family: 'Times New Roman',Times,serif;">Title: Executive Vice President and Treasurer</div>
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    </div>
    <div><br>
    </div>
  </div>
</body>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
