<?xml version="1.0" encoding="UTF-8"?><!-- Produced by edgar-services.com, Advanced Computer Innovations, Inc., Copyright (C) 2024-2026 --><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13g" xmlns:com="http://www.sec.gov/edgar/common">
	<schemaVersion>X0202</schemaVersion>
<headerData>
		<submissionType>SCHEDULE 13G/A</submissionType>
		<previousAccessionNumber>1376474-25-000287</previousAccessionNumber>
		<filerInfo>
			<filer>
				<filerCredentials>
					<cik>0001891626</cik>
					<ccc>XXXXXXXX</ccc>
				</filerCredentials>
			</filer>
			<liveTestFlag>LIVE</liveTestFlag>



		</filerInfo>
	</headerData>
	<formData>
		<coverPageHeader>
			<amendmentNo>3</amendmentNo>
			<securitiesClassTitle>Ordinary Shares (par value .0001)</securitiesClassTitle>
			<eventDateRequiresFilingThisStatement>06/01/2026</eventDateRequiresFilingThisStatement>
			<issuerInfo>
				<issuerCik>0002047455</issuerCik>
				<issuerName>Quartzsea Acquisition Corp</issuerName>
				<issuerCusips>
					<issuerCusipNumber>G7314B104</issuerCusipNumber>
				</issuerCusips>
				<issuerPrincipalExecutiveOfficeAddress>
					<com:street1>SUITE 331</com:street1>
					<com:street2>1185 6TH AVE</com:street2>
					<com:city>NEW YORK</com:city>
					<com:stateOrCountry>NY</com:stateOrCountry>
					<com:zipCode>10036</com:zipCode>
				</issuerPrincipalExecutiveOfficeAddress>
			</issuerInfo>
			<designateRulesPursuantThisScheduleFiled>
				<designateRulePursuantThisScheduleFiled>Rule 13d-1(c)</designateRulePursuantThisScheduleFiled>
			</designateRulesPursuantThisScheduleFiled>
		</coverPageHeader>
		<coverPageHeaderReportingPersonDetails>

			<reportingPersonName>Feis Equities LLC</reportingPersonName>
			<citizenshipOrOrganization>IL</citizenshipOrOrganization>
			<reportingPersonBeneficiallyOwnedNumberOfShares>
				<soleVotingPower>600132</soleVotingPower>
				<sharedVotingPower>0</sharedVotingPower>
				<soleDispositivePower>600132</soleDispositivePower>
				<sharedDispositivePower>0</sharedDispositivePower>
			</reportingPersonBeneficiallyOwnedNumberOfShares>
			<reportingPersonBeneficiallyOwnedAggregateNumberOfShares>600132</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
			<classPercent>5.26</classPercent>
			<typeOfReportingPerson>OO</typeOfReportingPerson>
			<comments>Type of Reporting Person: OO - Limited Liability Company</comments>
		</coverPageHeaderReportingPersonDetails>
		<coverPageHeaderReportingPersonDetails>

			<reportingPersonName>Lawrence M. Feis</reportingPersonName>
			<citizenshipOrOrganization>X1</citizenshipOrOrganization>
			<reportingPersonBeneficiallyOwnedNumberOfShares>
				<soleVotingPower>600132</soleVotingPower>
				<sharedVotingPower>0</sharedVotingPower>
				<soleDispositivePower>600132</soleDispositivePower>
				<sharedDispositivePower>0</sharedDispositivePower>
			</reportingPersonBeneficiallyOwnedNumberOfShares>
			<reportingPersonBeneficiallyOwnedAggregateNumberOfShares>600132</reportingPersonBeneficiallyOwnedAggregateNumberOfShares>
			<classPercent>5.26</classPercent>
			<typeOfReportingPerson>IN</typeOfReportingPerson>
		</coverPageHeaderReportingPersonDetails>
		<items>
			<item1>
				<issuerName>Quartzsea Acquisition Corp</issuerName>
				<issuerPrincipalExecutiveOfficeAddress>Quartzsea Acquisition Corporation, 1185 Avenue of the Americas, Suite 304, New York, NY 10036</issuerPrincipalExecutiveOfficeAddress>
			</item1>
			<item2>
				<filingPersonName>(i) Feis Equities LLC
(ii) Lawrence M. Feis</filingPersonName>
				<principalBusinessOfficeOrResidenceAddress>The address of the business office of each of the Reporting Persons is:
1740 Waukegan Road
Suite 206
Glenview, Illinois 60025
</principalBusinessOfficeOrResidenceAddress>
				<citizenship>Citizenship is set forth in Row 4 of the cover page for each Reporting Person hereto and is incorporated hereto by reference for each Reporting Person.</citizenship>
			</item2>
			<item3>
				<notApplicableFlag>Y</notApplicableFlag>
			</item3>
			<item4>
				<amountBeneficiallyOwned>600,132 - The percentage set forth in row 11 of the cover page for each Reporting Person is based on 11,409,900 ordinary shares outstanding as of April 23, 2026, as reported by the Issuer in its annual 10-Q filing for the period ending February 28,2026, filed with the Securities and Exchange Commission on April 28, 2026.</amountBeneficiallyOwned>
				<classPercent>5.26</classPercent>
				<numberOfSharesPersonHas>
					<solePowerOrDirectToVote>600,132</solePowerOrDirectToVote>
					<sharedPowerOrDirectToVote>0</sharedPowerOrDirectToVote>
					<solePowerOrDirectToDispose>600,132</solePowerOrDirectToDispose>
					<sharedPowerOrDirectToDispose>0</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>
				<certifications>By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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>
		<exhibitInfo>Exhibit A - Joint Filing Agreement</exhibitInfo>
		<signatureInformation>
			<reportingPersonName>Feis Equities LLC</reportingPersonName>
			<signatureDetails>
				<signature>Lawrence M. Feis</signature>
				<title>Managing Member LLC</title>
				<date>06/08/2026</date>
			</signatureDetails>
		</signatureInformation>
		<signatureInformation>
			<reportingPersonName>Lawrence M. Feis</reportingPersonName>
			<signatureDetails>
				<signature>Lawrence M. Feis</signature>
				<title>Individual</title>
				<date>06/08/2026</date>
			</signatureDetails>
		</signatureInformation>
	</formData>

</edgarSubmission>
