6-K

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 November 2022

Commission file number: 001-34936

Noah Holdings Limited

No. 1687 Changyang Road, Changyang Valley, Building2

Shanghai 200090, People’s Republic ofChina

(86) 21 8035 9221

(Address of Principal Executive 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  ¨

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): ¨

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.

Date: November 9, 2022

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.

NoahHoldings

Noah Holdings Private Wealth and Asset Management Limited

諾亞控股私人財富資產管理有限公司

(Incorporatedin the Cayman Islands with limited liability under the name Noah Holdings Limited and

carryingon business in Hong Kong as Noah Holdings Private Wealth and Asset Management Limited)

(StockCode: 6686)

DATEOF BOARD MEETING AND DATE OF

ANNOUNCEMENTOF THIRD QUARTER 2022 UNAUDITED

FINANCIALRESULTS

The board of directors (the “Board”) of Noah Holdings Private Wealth and Asset Management Limited (the “Company”) will hold a Board meeting on Monday, November 21, 2022 (Hong Kong time) for the purpose of, among others, approving the unaudited financial results of the Company for the three months ended September 30, 2022 (the “Q3 Results”) and announcement for the Q3 Results (the “Q3 Earnings Announcement”). The Company will announce its Q3 Results at or around 6:00 a.m. on Tuesday, November 22, 2022 (Hong Kong time) on the website of The Stock Exchange of Hong Kong Limited at www.hkexnews.hk.

Following the Q3 Earnings Announcement, the Company’s senior management will host an earnings conference call via Zoom webinar to discuss its Q3 Results and recent business activities. Details of the conference call are as follows:

A replay will be available on the same day of the conference call until November 29, 2022 at the Company’s investor relations website under the “Announcements & Events” section at http://ir.noahgroup.com.

A live and archived webcast of the conference call will be available at the Company’s investor relations website under the “Financial Reports” section at http://ir.noahgroup.com.

Asof the date of this announcement, the Board comprises Ms. Jingbo Wang, the chairwoman of the Board, Mr. Zhe Yin and Ms. Chia-Yue Changas directors; Mr. Neil Nanpeng Shen and Mr. Boquan He as non-executive directors; and Dr. Zhiwu Chen, Ms. May Yihong Wu, Mr. Tze-KaingYang and Mr. Jinbo Yao as independent directors.

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