SCHEDULE 13G/A 0001104659-25-010718 0001847582 XXXXXXXX LIVE 1 Class A ordinary share, par value US$0.0005 per share 12/31/2025 0001969302 Pony AI Inc. 732908108 1301 PEARL DEVELOPMENT BUILDING 1 MINGZHU 1ST ST, HENGLI TWN, NANSHA DIST GUANGZHOU F4 511458 Rule 13d-1(d) TMT General Partner Ltd. E9 14627522.00 0.00 14627522.00 0.00 14627522.00 N 4.2 CO (1) For rows 5, 7 and 9: TMT General Partner Ltd. is the general partner of Morningside China TMT GP IV, L.P. Morningside China TMT GP IV, L.P. is the general partner of Morningside China TMT Fund IV, L.P., Morningside China TMT Special Opportunity Fund II, L.P. and Morningside China TMT Fund IV Co-Investment, L.P. As of December 31, 2025, Morningside China TMT Fund IV, L.P. is the record owner of 10,409,666 Class A ordinary shares; Morningside China TMT Special Opportunity Fund II, L.P. is the record owner of 2,888,014 Class A ordinary shares; and Morningside China TMT Fund IV Co-Investment, L.P. is the record owner of 1,329,842 Class A ordinary shares. (2) For row 11: The ownership percentage of the Reporting Person is calculated based on a total of 352,452,783 Class A ordinary shares issued and outstanding as of November 30, 2025, as reported in the registrant's monthly return form filed with The Stock Exchange of Hong Kong Limited on December 4, 2025 and furnished as Exhibit 99.1 to the registrant's current report on Form 6-K filed with the SEC on the same date. Morningside China TMT GP IV, L.P. E9 14627522.00 0.00 14627522.00 0.00 14627522.00 N 4.2 PN (1) For rows 5, 7 and 9: Morningside China TMT GP IV, L.P. is the general partner of Morningside China TMT Fund IV, L.P., Morningside China TMT Special Opportunity Fund II, L.P. and Morningside China TMT Fund IV Co-Investment, L.P. As of December 31, 2025, Morningside China TMT Fund IV, L.P. is the record owner of 10,409,666 Class A ordinary shares; Morningside China TMT Special Opportunity Fund II, L.P. is the record owner of 2,888,014 Class A ordinary shares; and Morningside China TMT Fund IV Co-Investment, L.P. is the record owner of 1,329,842 Class A ordinary shares. (2) For row 11: The ownership percentage of the Reporting Person is calculated based on a total of 352,452,783 Class A ordinary shares issued and outstanding as of November 30, 2025, as reported in the registrant's monthly return form filed with The Stock Exchange of Hong Kong Limited on December 4, 2025 and furnished as Exhibit 99.1 to the registrant's current report on Form 6-K filed with the SEC on the same date. Morningside China TMT Fund IV, L.P. E9 10409666.00 0.00 10409666.00 0.00 10409666.00 N 3.0 PN (1) For rows 5, 7 and 9: As of December 31, 2025, Morningside China TMT Fund IV, L.P. directly holds 10,409,666 Class A ordinary shares. (2) For row 11: The ownership percentage of the Reporting Person is calculated based on a total of 352,452,783 Class A ordinary shares issued and outstanding as of November 30, 2025, as reported in the registrant's monthly return form filed with The Stock Exchange of Hong Kong Limited on December 4, 2025 and furnished as Exhibit 99.1 to the registrant's current report on Form 6-K filed with the SEC on the same date. Morningside China TMT Special Opportunity Fund II, L.P. E9 2888014.00 0.00 2888014.00 0.00 2888014.00 N 0.8 PN (1) For rows 5, 7 and 9: As of December 31, 2025, Morningside China TMT Special Opportunity Fund II, L.P. directly holds 2,888,014 Class A ordinary shares. (2) For row 11: The ownership percentage of the Reporting Person is calculated based on a total of 352,452,783 Class A ordinary shares issued and outstanding as of November 30, 2025, as reported in the registrant's monthly return form filed with The Stock Exchange of Hong Kong Limited on December 4, 2025 and furnished as Exhibit 99.1 to the registrant's current report on Form 6-K filed with the SEC on the same date. Morningside China TMT Fund IV Co-Investment, L.P. E9 1329842.00 0.00 1329842.00 0.00 1329842.00 N 0.4 PN (1) For rows 5, 7 and 9: As of December 31, 2025, Morningside China TMT Fund IV Co-Investment, L.P. directly holds directly holds 1,329,842 Class A ordinary shares. (2) For row 11: The ownership percentage of the Reporting Person is calculated based on a total of 352,452,783 Class A ordinary shares issued and outstanding as of November 30, 2025, as reported in the registrant's monthly return form filed with The Stock Exchange of Hong Kong Limited on December 4, 2025 and furnished as Exhibit 99.1 to the registrant's current report on Form 6-K filed with the SEC on the same date. Pony AI Inc. 1301 PEARL DEVELOPMENT BUILDING 1, MINGZHU 1ST ST, HENGLI TWN, NANSHA DIST, GUANGZHOU, F4, 511458 Each of the followings is hereinafter individually referred to as a "Reporting Person" and collectively as the "Reporting Persons." This statement is filed on behalf of: (1) TMT General Partner Ltd. (2) Morningside China TMT GP IV, L.P. (3) Morningside China TMT Fund IV, L.P. (4) Morningside China TMT Special Opportunity Fund II, L.P. (5) Morningside China TMT Fund IV Co-Investment, L.P. The business address of each of the Reporting Persons is Windward 3, Regatta Office Park, P.O. Box 1350, Grand Cayman, KY1-1108, Cayman Islands. Each of the Reporting Persons is organized under the laws of Cayman Islands. Y The information required by Items 4(a) is set forth in Row 9 of the cover page for each Reporting Person and is incorporated herein by reference. The information required by Items 4(b) is set forth in Row 11 of the cover page for each Reporting Person and is incorporated herein by reference. The information required by Items 4(c)(i) is set forth in Row 5 of the cover page for each Reporting Person and is incorporated herein by reference. TMT General Partner Ltd. is the general partner of Morningside China TMT GP IV, L.P. Morningside China TMT GP IV, L.P. is the general partner of Morningside China TMT Fund IV, L.P., Morningside China TMT Special Opportunity Fund II, L.P. and Morningside China TMT Fund IV Co-Investment, L.P. As of December 31, 2025, Morningside China TMT Fund IV, L.P. is the record owner of 10,409,666 Class A ordinary shares; Morningside China TMT Special Opportunity Fund II, L.P. is the record owner of 2,888,014 Class A ordinary shares; and Morningside China TMT Fund IV Co-Investment, L.P. is the record owner of 1,329,842 Class A ordinary shares. TMT General Partner Ltd. is controlled by its board consisting of three individuals, including Qin Liu, Jianming Shi and Gerald Lokchung Chan, who have the voting and dispositive powers over the shares held by Morningside China TMT Fund IV, L.P., Morningside China TMT Special Opportunity Fund II, L.P. and Morningside China TMT Fund IV Co-Investment, L.P. The information required by Items 4(c)(ii) is set forth in Row 6 of the cover page for each Reporting Person and is incorporated herein by reference. The information required by Items 4(c)(iii) is set forth in Row 7 of the cover page for each Reporting Person and is incorporated herein by reference. TMT General Partner Ltd. is the general partner of Morningside China TMT GP IV, L.P. Morningside China TMT GP IV, L.P. is the general partner of Morningside China TMT Fund IV, L.P., Morningside China TMT Special Opportunity Fund II, L.P. and Morningside China TMT Fund IV Co-Investment, L.P. As of December 31, 2025, Morningside China TMT Fund IV, L.P. is the record owner of 10,409,666 Class A ordinary shares; Morningside China TMT Special Opportunity Fund II, L.P. is the record owner of 2,888,014 Class A ordinary shares; and Morningside China TMT Fund IV Co-Investment, L.P. is the record owner of 1,329,842 Class A ordinary shares. TMT General Partner Ltd. is controlled by its board consisting of three individuals, including Qin Liu, Jianming Shi and Gerald Lokchung Chan, who have the voting and dispositive powers over the shares held by Morningside China TMT Fund IV, L.P., Morningside China TMT Special Opportunity Fund II, L.P. and Morningside China TMT Fund IV Co-Investment, L.P. The information required by Items 4(c)(iv) is set forth in Row 8 of the cover page for each Reporting Person and is incorporated herein by reference. N Y Y Y Y Y Y Exhibit 99.1: Joint Filing Agreement dated February 10, 2025 by and among the Reporting Persons (incorporated by reference to Exhibit 99.1 to the Schedule 13G filed by the Reporting Persons with the Securities and Exchange Commission on February 10, 2025). TMT General Partner Ltd. /s/ LIU, Qin 01/30/2026 Morningside China TMT GP IV, L.P. /s/ LIU, Qin 01/30/2026 Morningside China TMT Fund IV, L.P. /s/ LIU, Qin 01/30/2026 Morningside China TMT Special Opportunity Fund II, L.P. /s/ LIU, Qin 01/30/2026 Morningside China TMT Fund IV Co-Investment, L.P. /s/ LIU, Qin 01/30/2026