Sec Form 3 Filing - Li Hui (David) @ Luckin Coffee Inc. - 2026-03-18

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Li Hui (David) 2. Issuer Name and Ticker or Trading Symbol Luckin Coffee Inc. [ LKNCY] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 28TH FL, BUILDING T3, HAIXI JINGU PLAZA, 1-3 TAIBEI ROAD, SIMING DISTRICT 3. Date of Earliest Transaction (MM/DD/YY) 03/18/2026 (Street) XIAMEN361008 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Ordinary Shares 35,555,998 I By Camel ZQ Limited ( 1 ) Class A Ordinary Shares 25,384,789 I By Centurium Capital II Ltd. ( 1 ) Class A Ordinary Shares 5 I By Camel Zhengkai Limited ( 1 ) Class A Ordinary Shares 32,313,906 I By CCM Prosper L.P. ( 1 ) Class A Ordinary Shares 32,313,906 I By Masterclass Holdings Limited ( 1 ) Class A Ordinary Shares 13,848,817 I By Tianyu Ruikong Limited ( 1 ) American Depositary Shares ( 4 ) 2,627,249 I By Camel ZQ Limited ( 1 ) American Depositary Shares ( 4 ) 544,346 I By Camel Zhengkai Limited ( 1 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Class B Ordinary Shares ( 2 ) ( 2 ) ( 2 ) Class A Ordinary Shares 136,172,000 ( 2 ) I By Centurium Investment Limited ( 1 ) Class B Ordinary Shares ( 2 ) ( 2 ) ( 2 ) Class A Ordinary Shares 4 ( 2 ) I By Fortunate Cup Holdings Limited ( 1 ) Senior Convertible Preferred Shares ( 3 ) ( 3 ) ( 3 ) Class A Ordinary Shares 158,158,519 ( 3 ) I By Centurium Capital Partners 2018, L.P. ( 1 ) Senior Convertible Preferred Shares ( 3 ) ( 3 ) ( 3 ) Class A Ordinary Shares 125,486,906 ( 3 ) I By CCM Lucky, L.P. ( 1 ) Senior Convertible Preferred Shares ( 3 ) ( 3 ) ( 3 ) Class A Ordinary Shares 11,739,190 ( 3 ) I By CCM CB II, L.P. ( 1 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Li Hui (David) 28TH FL, BUILDING T3, HAIXI JINGU PLAZA 1-3 TAIBEI ROAD, SIMING DISTRICT XIAMEN361008 X Signatures /s/ Hui Li 03/18/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Reporting Person is the sole shareholder and director of Centurium Holdings (BVI) Ltd., which is the sole shareholder of Centurium Holdings Ltd. ("Centurium"). Centurium is the sole shareholder of Centurium Capital II Ltd. and Centurium Investment Limited. Centurium holds interests in the general partners of Centurium Capital Partners II, L.P. (which is the sole shareholder of Masterclass Holdings Limited), Centurium Capital Partners 2018, L.P. (which is the sole shareholder of Fortunate Cup Holdings Limited), CCM Lucky, L.P., CCM CB II, L.P. and CCM Prosper L.P.. The Reporting Person has sole voting and investment discretion with respect to Tianyu Ruikong Limited, and has all voting power in Camel ZQ Limited and Camel Zhengkai Limited through an entity ultimately controlled by him. ( 2 )The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis at any time at the option of the Reporting Person. The Class B Ordinary Shares have no expiration date. ( 3 )The Senior Convertible Preferred Shares are convertible into that number of Issuer's Class A Ordinary Shares (or an equivalent number of ADSs), at any time at the option of the Reporting Person, determined by dividing (i) the sum of the original issue price plus any declared but unpaid dividends on such Senior Convertible Preferred Shares by (ii) the conversion price in effect at the time of the conversion, which was initially the original issue price of $0.8125, subject to adjustment from time to time. ( 4 )Each American Depositary Share ("ADS") represents eight Class A Ordinary Shares. The ADSs have no expiration date.

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* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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