SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Yang Cailian (Last) (First) (Middle) 10TH FLOOR, BUILDING A NO. 658 ZHAOHUA ROAD, CHANGNING DISTRICT (Street) SHANGHAI F4 200050 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 03/18/2026	3. Issuer Name and Ticker or Trading Symbol Hesai Group [ HSAI ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner Officer (give title below) Other (specify below) Vice President of Operations	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
American depositary shares(1)	122,632	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Options (right to buy)	07/03/2021	07/03/2028	Class B ordinary shares	181,042	2.1	D
Options (right to buy)	08/31/2022	11/22/2028	Class B ordinary shares	9,441	3.3	D
Options (right to buy)	08/31/2023	11/22/2028	Class B ordinary shares	9,441	3.3	D
Options (right to buy)	08/31/2024	11/22/2028	Class B ordinary shares	9,441	3.3	D
Options (right to buy)	08/31/2025	11/22/2028	Class B ordinary shares	9,443	3.3	D
Options (right to buy)	05/01/2025	06/05/2030	Class B ordinary shares	9,090	1.63	D
Options (right to buy)	05/01/2026	06/05/2030	Class B ordinary shares	9,090	1.63	D
Options (right to buy)	05/01/2027	06/05/2030	Class B ordinary shares	9,093	1.63	D
Options (right to buy)	(2)	06/05/2030	Class B ordinary shares	2,993	1.63	D
Options (right to buy)	01/31/2026	11/18/2031	Class B ordinary shares	8,000	0.9	D
Options (right to buy)	01/31/2027	11/18/2031	Class B ordinary shares	8,000	0.9	D
Options (right to buy)	01/31/2028	11/18/2031	Class B ordinary shares	8,000	0.9	D
Options (right to buy)	01/31/2029	11/18/2031	Class B ordinary shares	8,000	0.9	D
Restricted share units	(3)	(3)	Class B ordinary shares	1,000	(3)	D
Restricted share units	(4)	(4)	Class B ordinary shares	1,000	(4)	D
Restricted share units	(5)	(5)	Class B ordinary shares	1,000	(5)	D
Restricted share units	(6)	(6)	Class B ordinary shares	1,000	(6)	D

Explanation of Responses:

1. Each American depositary share represents one Class B ordinary share.

2. Option to purchase 2,108 Class B ordinary shares has vested as of the date of this filing, and the remaining option will vest on a monthly basis since April 1, 2026, with 62 Class Bordinary shares vesting each month until April 1, 2027 and 79 Class B ordinary shares vesting on May 1, 2027.

3. Represents restricted share units granted to the reporting person pursuant to the issuer's share incentive plan, which will vest on December 1, 2026 and do not have expiration dates. These restricted share units evidence the contingent right to receive Class B ordinary shares upon vesting.

4. Represents restricted share units granted to the reporting person pursuant to the issuer's share incentive plan, which will vest on December 1, 2027 and do not have expiration dates. These restricted share units evidence the contingent right to receive Class B ordinary shares upon vesting.

5. Represents restricted share units granted to the reporting person pursuant to the issuer's share incentive plan, which will vest on December 1, 2028 and do not have expiration dates. These restricted share units evidence the contingent right to receive Class B ordinary shares upon vesting.

6. Represents restricted share units granted to the reporting person pursuant to the issuer's share incentive plan, which will vest on December 1, 2029 and do not have expiration dates. These restricted share units evidence the contingent right to receive Class B ordinary shares upon vesting.

	/s/ Cailian Yang	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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