Sec Form 3 Filing - Zhai Yifan @ ASCENTAGE PHARMA GROUP INTERNATIONAL - 2026-03-18

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Zhai Yifan 2. Issuer Name and Ticker or Trading Symbol ASCENTAGE PHARMA GROUP INTERNATIONAL [ AAPG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Medical Officer (Last) (First) (Middle) C/O ASCENTAGE PHARMA GROUP INC., 700 KING FARM BLVD., SUITE 510 3. Date of Earliest Transaction (MM/DD/YY) 03/18/2026 (Street) ROCKVILLE, MD20850 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Ordinary Shares 1,097,994 I See Footnote (2) ( 2 ) Ordinary Shares 22,054,131 I See Footnote (1) ( 1 ) Ordinary Shares 312,534 D Ordinary Shares 14,089,111 I See Footnote (5) ( 5 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Options $ 8.14 ( 4 ) ( 3 ) 11/26/2035 Ordinary Shares 143,463 I See Footnote (2) ( 2 ) Options $ 8.14 ( 4 ) ( 3 ) 11/26/2035 Ordinary Shares 103,364 D Restricted share units $ 0 ( 6 ) ( 6 ) Ordinary Shares 143,463 I See Footnote (2) ( 2 ) Restricted share units $ 0 ( 6 ) ( 6 ) Ordinary Shares 103,364 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Zhai Yifan C/O ASCENTAGE PHARMA GROUP INC. 700 KING FARM BLVD., SUITE 510 ROCKVILLE, MD20850 Chief Medical Officer Signatures Thomas J. Knapp 03/20/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Shares held by Dajun Yang Dynasty Trust. The Reporting Person disclaims beneficial ownership over such securities except to the extent of her pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes. ( 2 )Shares held by Reporting Person's spouse. The Reporting Person disclaims beneficial ownership over such securities except to the extent of her pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes. ( 3 )The stock options vest in four equal increments on each of 11/26/2026, 2027, 2028 and 2029. ( 4 )The exercise price for the stock options is in HKD, and the exercise price included in the table represents conversion to USD based on the exchange rate on the date of grant. ( 5 )Securities held by ordinary shares held by HealthQuest Pharma Limited, an entity controlled by the Reporting Person. The Reporting Person disclaims beneficial ownership over such securities except to the extent of her pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes. ( 6 )Each restricted stock unit (RSUs) represents a contingent right to receive one Ordinary Share of the Issuer upon vesting. The RSUs vest in four equal increments on each of 11/26/2026, 2027, 2028 and 2029.

Remarks: This form is filed using a special power of attorney.

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 4(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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