HSAI 6-K 2026 - Equibles

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 EXCHANGE ACT OF 1934

For the month of July 2026

Commission File Number: 001-41611

Hesai Group

10th Floor, Building A

No. 658 Zhaohua Road, Changning District

Shanghai 200050

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

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.

Hesai Group

By	:	/s/<br> Yifan Li
Name	:	Yifan Li
Title	:	Chief Executive Officer

Date: July 27, 2026

Exhibit 99.1

Hong KongExchanges 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.

Hesai Group

禾賽科技 *

(Acompany controlled through weighted voting rights and incorporated in the Cayman Islands with limited liability)

(HKEXStock Code: 2525)

(NASDAQStock Ticker: HSAI)

DATE OF BOARD MEETING

The board of directors (the “Board”) of Hesai Group (the “Company”) hereby announces that a meeting of the Board will be held on August 18, 2026 (Tuesday, Beijing/Hong Kong Time), for the purpose of considering and approving, among other matters, (i) the quarterly results of the Company and its subsidiaries for the three months ended June 30, 2026 and its publication, and (ii) the unaudited consolidated interim results of the Company and its subsidiaries for the six months ended June 30, 2026 and the publication thereof.

The Company’s management will host an earnings conference call at 8:00 AM (U.S. Eastern Time)/8:00 PM (Beijing/Hong Kong Time) on Tuesday, August 18, 2026. For participants who wish to join the call by phone, please access the link provided below to complete the pre-registration and dial in 5 minutes prior to the scheduled call start time. Upon registration, each participant will receive dial-in details to join the conference call.

Event Title: Hesai Group Second Quarter 2026 Earnings Conference Call

Pre-registration Link: https://s1.c-conf.com/diamondpass/10056124-5hw8f8.html

Additionally, a live and archived webcast of the conference call will be available on the Company’s investor relations website at https://investor.hesaitech.com.

	By order of the Board
	Hesai Group
	Dr. Yifan Li
	Chairman of the Board, Executive<br> Director and
	Chief Executive Officer

Hong Kong, July 27, 2026

As at the dateof this announcement, the Board comprises: (i) Dr. Yifan Li, Dr. Kai Sun, Mr. Shaoqing Xiang and Ms. Cailian Yang as the executive Directors;and (ii) Ms. Yi Zhang, Mr. Jia Ren and Dr. Hui Wang as the independent non-executive Directors.

* Foridentification purposes only