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 March 2026

Commission File Number: 002-023311

ASCENTAGE PHARMA GROUP INTERNATIONAL

(Translation of Registrant’s name into English)

68 Xinqing Road

Suzhou Industrial Park

Suzhou, Jiangsu

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 ☒ Form 40-F ☐

The information in this Report on Form 6-K (this “Report”) of Ascentage Pharma Group International (the “Company”), including Exhibits 99.1 and 99.2 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act.

INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K

Press Release

On March 25, 2026, the Company issued a press release announcing its unaudited financial results for the fourth quarter and year ended December 31, 2025 and a business update. A copy of the press release is furnished as Exhibit 99.1 to this Report.

Announcement

On March 25, 2026, the Company issued a Hong Kong Stock Exchange announcement entitled, “Announcement of Annual Results For The Year Ended December 31, 2025; and Change of Company Secretary and Authorised Representative”. A copy of the announcement is furnished as Exhibit 99.2 to this Report.

INDEX TO EXHIBITS

Exhibit Number		Exhibit Title
99.1		Press Release dated March 25, 2026
99.2		Hong Kong Stock Exchange Announcement dated March 25, 2026

SIGNATURE

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.

	ASCENTAGE PHARMA GROUP INTERNATIONAL

Date: March 26, 2026	/s/ Dajun Yang
	Name:	Dajun Yang
	Title:	Chief Executive Officer

ASCENTAGE PHARMA GROUP INTERNATIONAL 6-K