UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

For the month of January 2021

Commission File Number 001-38896

Luckin Coffee Inc.

(Exact Name of Registrant as Specified in Its Charter)

17F Block A, Tefang Portman Tower

No. 81 Zhanhong Road

Siming District, Xiamen, Fujian

People’s Republic of China, 361008

+86-592-3386666

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F x       Form 40-F ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ¨

Luckin Coffee Adopts a 2021 Equity Incentive Plan

Luckin Coffee Inc. (the “Company” or “Luckin Coffee”) (OTC:LKNCY) today announced the adoption of a 2021 Equity Incentive Plan (the “2021 Plan”) to retain, attract and motivate employees and directors by providing them with equity incentives. The 2021 Plan has a ten-year term, and has a maximum number of 222,769,232 Class A ordinary shares, represented by 27,846,154 American Depositary Shares, available for issuance pursuant to all awards under the 2021 Plan. Luckin Coffee may grant options, restricted shares, restricted share units and other form of awards pursuant to the 2021 Plan. A copy of the 2021 Plan is attached hereto as Exhibit 99.1.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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