<SEC-DOCUMENT>0001104659-26-035688.txt : 20260327
<SEC-HEADER>0001104659-26-035688.hdr.sgml : 20260327
<ACCEPTANCE-DATETIME>20260327075058
ACCESSION NUMBER:		0001104659-26-035688
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20260325
FILED AS OF DATE:		20260327
DATE AS OF CHANGE:		20260327

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Li Yifan
		CENTRAL INDEX KEY:			0001998254
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41611
		FILM NUMBER:		26801101

	MAIL ADDRESS:	
		STREET 1:		9TH FL, BLDG L2-B, 1588 ZHUGANG RD
		STREET 2:		HONGQIAO WORLD CENTER
		CITY:			SHANGHAI
		STATE:			F4
		ZIP:			201702

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Hesai Group
		CENTRAL INDEX KEY:			0001861737
		STANDARD INDUSTRIAL CLASSIFICATION:	GENERAL INDUSTRIAL MACHINERY & EQUIPMENT, NEC [3569]
		ORGANIZATION NAME:           	06 Technology
		EIN:				000000000
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1588 ZHUGUANG ROAD
		STREET 2:		9TH FLOOR, BUILDING L2-B
		CITY:			SHANGHAI
		STATE:			F4
		ZIP:			201702
		BUSINESS PHONE:		86 21 31588240

	MAIL ADDRESS:	
		STREET 1:		1588 ZHUGUANG ROAD
		STREET 2:		9TH FLOOR, BUILDING L2-B
		CITY:			SHANGHAI
		STATE:			F4
		ZIP:			201702
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tm2610078-3_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-03-25</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001861737</issuerCik>
        <issuerName>Hesai Group</issuerName>
        <issuerTradingSymbol>HSAI</issuerTradingSymbol>
        <issuerForeignTradingSymbol>[HKEX: 2525]</issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001998254</rptOwnerCik>
            <rptOwnerName>Li Yifan</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>true</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>10TH FLOOR, BUILDING A,</rptOwnerStreet1>
            <rptOwnerStreet2>NO. 658 ZHAOHUA ROAD, CHANGNING DISTRICT</rptOwnerStreet2>
            <rptOwnerCity>SHANGHAI</rptOwnerCity>
            <rptOwnerNonUSStateTerritory></rptOwnerNonUSStateTerritory>
            <rptOwnerCountry>F4</rptOwnerCountry>
            <rptOwnerZipCode>200050</rptOwnerZipCode>
            <rptOwnerStateDescription>CHINA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted share units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2026-03-25</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>157000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F2"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class B ordinary shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>157000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>157000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each restricted share unit represents the contingent right to receive one (1) Class B ordinary share upon vesting.</footnote>
        <footnote id="F2">These restricted share units were granted on March 25, 2026, and vest per annum in four equal installments over a 4-year period, starting from the first anniversary of May 31, 2026, subject to the reporting person's continued service through the applicable vesting date. The restricted share units do not have expiration dates.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Yifan Li</signatureName>
        <signatureDate>2026-03-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
