6-K 1 tm2625818d1_6k.htm FORM 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 September 2026

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 — Next Day Disclosure Return Dated September 15, 2026

Exhibit 99.2 — Next Day Disclosure Return Dated September 16, 2026

Exhibit 99.3 — Next Day Disclosure Return Dated September 17, 2026

Exhibit 99.4 — Next Day Disclosure Return Dated September 18, 2026

Exhibit 99.5 — Next Day Disclosure Return Dated September 21, 2026

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: September 21, 2026