ECARX (ECX) director Grace Hui Tang lists vested options in Form 3

Rhea-AI Filing Summary

ECARX Holdings Inc. director Grace Hui Tang filed an initial ownership report listing vested stock options, rather than new trades. She holds share options over 46,952, 123,362 and 101,266 underlying Class A Ordinary Shares, each with an exercise price of $0.5000 and expirations in 2033, 2034 and 2035. All of these options were granted under the company’s share incentive plans and are fully vested as of this Form 3, showing her existing potential ownership position.

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^*

Tang Grace Hui

(Last) (First) (Middle)

3701, T15, CENTRAL PARK,

6 CHAOWAI DAJIE, CHAOYANG DISTRICT

(Street)

BEIJING 100020

(City) (State) (Zip)

CHINA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
ECARX Holdings Inc. [ ECX ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	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)

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
Share options (right to buy)	12/31/2023	12/31/2033	Class A Ordinary Shares	46,952(1)	$0.5	D
Share options (right to buy)	12/31/2024	12/31/2034	Class A Ordinary Shares	123,362(1)	$0.5	D
Share options (right to buy)	12/31/2025	12/31/2035	Class A Ordinary Shares	101,266(1)	$0.5	D

Explanation of Responses:

1. Represents options granted to the reporting person pursuant to the issuer's share incentive plans, all of which have vested as of the date of this Form 3.

	/s/ Grace Hui Tang	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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does the ECARX (ECX) Form 3 filing by Grace Hui Tang show?

The Form 3 shows director Grace Hui Tang reporting existing holdings of vested stock options in ECARX Holdings Inc.. These options give her the right to buy Class A Ordinary Shares at a fixed exercise price under company incentive plans.

How many ECARX (ECX) shares are covered by Grace Hui Tang’s options?

Grace Hui Tang holds vested options over 46,952, 123,362 and 101,266 underlying Class A Ordinary Shares. Each option block is reported separately, reflecting different expiration dates while all are fully vested under the company’s share incentive plans.

What is the exercise price of Grace Hui Tang’s ECARX (ECX) stock options?

All reported stock options for Grace Hui Tang have an exercise price of $0.5000 per underlying Class A Ordinary Share. This fixed price is the cost she would pay to convert each option into a share if she chooses to exercise in the future.

When do Grace Hui Tang’s ECARX (ECX) stock options expire?

Her reported stock options expire on December 31, 2033, December 31, 2034 and December 31, 2035. Each option grant has its own expiration date, defining the last day she can exercise those options for Class A Ordinary Shares.

Are Grace Hui Tang’s ECARX (ECX) options already vested?

Yes. The filing notes that all reported options were granted under ECARX’s share incentive plans and have fully vested as of the Form 3 date. Vested options are currently exercisable, subject to their future expiration dates and the stated exercise price.

Does the ECARX (ECX) Form 3 indicate recent buying or selling by Grace Hui Tang?

The Form 3 functions as an initial ownership report and lists existing vested option holdings. It does not report open-market share purchases or sales, but instead discloses her current rights to acquire Class A Ordinary Shares through stock options.