6-K

UNITED STATES

SECURITIES AND EXCHANGECOMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER

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

THE SECURITIES EXCHANGEACT OF 1934

For the month of November 2024

Commission file number:001-39278

KingsoftCloud Holdings Limited

(Exact Name of Registrantas Specified in Its Charter)

Building D, Xiaomi Scienceand Technology Park, No. 33 Xierqi Middle Road,

Haidian District

Beijing, 100085, thePeople’s Republic of China

(Address of PrincipalExecutive Offices)

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

Form 20-F  x              Form 40-F  ¨

EXPLANATORY NOTE

We submitted a voluntary announcement dated November 11, 2024 to The Stock Exchange of Hong Kong Limited in relation to the entering into the finance lease agreement. For details, please refer to Exhibit 99.1 to this current report on Form 6-K.

EXHIBIT INDEX

SIGNATURE

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.

Exhibit 99.1

HongKong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement,make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arisingfrom or in reliance upon the whole or any part of the contents of this announcement.

KingsoftCloud Holdings Limited

金山云控股有限公司

(Incorporatedin the Cayman Islands with limited liability)

(StockCode: 3896)

(NasdaqStock Ticker: KC)

VOLUNTARYANNOUNCEMENT

ENTERINGINTO THE FINANCE LEASE AGREEMENT

This announcement is made by Kingsoft Cloud Holdings Limited (the “Company”) on a voluntary basis and in accordance with the terms of the Agreement (as defined below).

The board of directors of the Company (the “Board”) announces that, in order to accelerate its investment into AI infrastructure, on November 11, 2024, Beijing Kingsoft Cloud Network Technology Co., Ltd. (a consolidated affiliated entity of the Company, “Kingsoft CloudNetwork”) and CITIC Financial Leasing Co., Ltd. (“CITIC Financial Leasing”) entered into a finance lease agreement (the “Agreement”) after arm’s length negotiation, pursuant to which CITIC Financial Leasing agreed to provide finance lease service to Kingsoft Cloud Network by way of sale and leaseback of certain servers with the total amount of finance lease principal of RMB250 million. The term of the Agreement is three years, and the initial annual interest rate is 4.35%.

The Company believes that entering into the Agreement will extend the Company’s financing channels, enhance the liquidity source and optimize the capital structure of the Company by replenishing its working capital.

As at the date of this announcement, entering into the Agreement and the transactions contemplated thereunder do not constitute notifiable transactions or connected transactions under the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

Hong Kong, November 11, 2024

Asat the date of this announcement, the board of directors of the Company comprises Mr. Lei Jun as Chairman and non-executive director,Mr. Zou Tao as Vice Chairman and executive director, Mr. He Haijian as executive director, Mr. Feng Honghua as non-executivedirector, and Mr. Yu Mingto, Mr. Wang Hang and Ms. Qu Jingyuan as independent non-executive directors.