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 October 2025
Commission File Number: 001-37922
ZTO Express (Cayman) Inc.
Building One, No. 1685 Huazhi Road
Qingpu District
Shanghai, 201708
People’s Republic of China
(Address of principal executive offices)
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 ¨
Exhibit Index
Exhibit 99.1 – Announcement — Date of Board Meeting
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.
| ZTO Express (Cayman) Inc. | |||
| By | : | /s/ Huiping Yan | |
| Name | : | Huiping Yan | |
| Title | : | Chief Financial Officer | |
Date: October 24, 2025
Exhibit 99.1
Hong Kong 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 arising from or in reliance upon the whole or any part of the contents of this announcement.
Under our weighted voting rights structure, our share capital comprises Class A ordinary shares and Class B ordinary shares. Each Class A ordinary share entitles the holder to exercise one vote, and each Class B ordinary share entitles the holder to exercise 10 votes, respectively, on all matters that require a shareholder’s vote. Shareholders and prospective investors should be aware of the potential risks of investing in a company with a weighted voting rights structure. Our American depositary shares, each representing one of our Class A ordinary shares, are listed on the New York Stock Exchange in the United States under the symbol ZTO.

ZTO Express (Cayman) Inc.
中通快遞(開曼)有限公司
(A company controlled through weighted voting rights and incorporated in the Cayman Islands with limited liability)
(Stock Code: 2057)
DATE OF BOARD MEETING
The board of directors (the “Board”) of ZTO Express (Cayman) Inc. (the “Company”) hereby announces that a meeting of the Board will be held on Wednesday, November 19, 2025 (Beijing time) for the purpose of, among others, approving the Company’s unaudited financial results for the third quarter ended September 30, 2025 and its publication.
The Company will release its unaudited financial results for the third quarter ended September 30, 2025 on Thursday, November 20, 2025 (Beijing time), before the trading hours of The Stock Exchange of Hong Kong Limited.
The Company’s management team will host an earnings conference call at 8:30 A.M. on Thursday, November 20, 2025 (Beijing Time), which is 7:30 P.M. on Wednesday, November 19, 2025 (U.S. Eastern Time).
Dial-in details for the earnings conference call are as follows:
| United States/Canada: | 1-888-317-6003 |
| Hong Kong: | 800-963-976 |
| Singapore: | 800-120-5863 |
| Mainland China: | 4001-206115 |
| International: | 1-412-317-6061 |
| Passcode: | 7602569 |
A replay of the earnings conference call may be accessible through Wednesday, November 26, 2025 by dialing the following numbers:
| United States/Canada: | 1-855-669-9658 |
| International: | 1-412-317-0088 |
| Passcode: | 8703795 |
A live and archived webcast of the earnings conference call will also be available at the Company’s investor relations website at http://zto.investorroom.com.
| By order of the Board | |
| ZTO Express (Cayman) Inc. | |
| Meisong LAI | |
| Chairman |
Hong Kong, October 24, 2025
As at the date of this announcement, the Board comprises Mr. Meisong LAI as the chairman and executive director, Mr. Jilei WANG and Mr. Hongqun HU as executive directors, Mr. Xing LIU and Ms. Di XU as non-executive directors, Mr. Frank Zhen WEI, Mr. Qin Charles HUANG, Mr. Herman YU, Mr. Tsun-Ming (Daniel) KAO and Ms. Fang XIE as independent non-executive directors.