6-K

UNITED STATES

SECURITIES AND EXCHANGECOMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATEISSUER

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

THE SECURITIES EXCHANGEACT OF 1934

For the month of December 2023

Commission File Number:001-40540

Atour Lifestyle HoldingsLimited

(Exact name of registrantas specified in its charter)

18th floor, Wuzhong Building,

618 Wuzhong Road, MinhangDistrict,

Shanghai, People’sRepublic of China

(+86) 021-64059928

(Address of principalexecutive office)

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

EXHIBIT INDEX

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.

Exhibit99.1

Atour Lifestyle HoldingsLimited Announces Pricing of Upsized Registered Secondary

Offering of

American DepositaryShares by Legend Capital

SHANGHAI, China, December 6, 2023 /GlobeNewswire/ — Atour Lifestyle Holdings Limited (“Atour” or the “Company”) (NASDAQ: ATAT), a leading hospitality and lifestyle company in China, today announced the pricing of an upsized registered secondary underwritten offering by entities affiliated with Legend Capital (“Legend Capital”) of an aggregate of 9,600,000 American depositary shares (the “ADSs” and such offering, the “Secondary Offering”), each ADS representing three Class A ordinary shares of par value US$0.0001 each of the Company, at an offering price of US$15.80 per ADS. The Secondary Offering was upsized from 8,000,000 ADSs, as previously disclosed, to 9,600,000 ADSs. The underwriters in the Secondary Offering will have a 30-day option to purchase up to 1,440,000 additional ADSs from Legend Capital.

The Company will not receive any proceeds from the sale of the ADSs by Legend Capital. The gross proceeds of the Secondary Offering to Legend Capital amounts to approximately US$151.7 million, without deducting underwriting discounts and commissions and offering expenses payable by Legend Capital and assuming the underwriters do not exercise the option to purchase additional ADSs. The closing of the Secondary Offering will be subject to customary closing conditions.

BofA Securities, Inc., CMB International Capital Limited and Citigroup Global Markets Inc. act as the joint bookrunners for the Secondary Offering.

This Secondary Offering is made pursuant to an effective shelf registration statement on Form F-3 filed with the U.S. Securities and Exchange Commission (the “SEC”), which is available on the SEC’s website at www.sec.gov. This Secondary Offering is being made by means of a prospectus supplement and an accompanying prospectus included in the Form F-3. The Form F-3 and the prospectus supplement are available on the SEC’s website at www.sec.gov. Copies of the prospectus supplement and the accompanying prospectus related to this Secondary Offering may be obtained by contacting BofA Securities, Inc., One Bryant Park, New York, NY 10036, United States of America, Attention: Prospectus Department, telephone: +1-800-294-1322, email: [email protected]; CMB International Capital Limited, 45F, Champion Tower, 3 Garden Road, Central, Hong Kong, Attention: CMBI ECM, telephone: +852-3761-8990, email: [email protected]; Citigroup Global Markets Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, or by telephone at +1-800-831-9146, or by emailing [email protected].

This press release shall not constitute an offer to sell, or a solicitation of an offer to buy, the securities described herein, nor shall there be any offer, solicitation or sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

AboutAtour Lifestyle Holdings Limited

Atour Lifestyle Holdings Limited (NASDAQ: ATAT) is a leading hospitality and lifestyle company in China, with a distinct portfolio of lifestyle hotel brands. Atour is the leading upper midscale hotel chain in China and is the first Chinese hotel chain to develop a scenario-based retail business. Atour is committed to bringing innovations to China’s hospitality industry and building new lifestyle brands around hotel offerings. For more information, please visit https://ir.yaduo.com.

SafeHarbor Statement

This press release contains forward-looking statements. These statements are made under the "safe harbor" provisions of the U.S. Private Securities Litigation Reform Act of 1995. Statements that are not historical facts, including statements about the Company's beliefs and expectations, are forward-looking statements. In some cases, forward-looking statements can be identified by words or phrases such as "may," "will," "expect," "anticipate," "target," "aim," "estimate," "intend," "plan," "believe," "potential," "continue," "is/are likely to," or other similar expressions. Forward-looking statements involve inherent risks and uncertainties, and a number of factors could cause actual results to differ materially from those contained in any forward-looking statement. Further information regarding these and other risks, uncertainties or factors is included in the Company's filings with the SEC. All information provided in this press release is as of the date of this press release, and the Company does not undertake any duty to update such information, except as required under applicable law.

InvestorRelations Contact

Atour Lifestyle Holdings Limited

Email: [email protected]

Piacente Financial Communications

Email: [email protected]

Tel: +86-10-6508-0677

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