Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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 * Forbion Growth Opportunities Fund III Cooperatief U.A. 2. Issuer Name and Ticker or Trading Symbol Braveheart Bio, Inc. [BRVE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) GOOIMEER 2-35 3. Date of Earliest Transaction (Month/Day/Year) 08/07/2026 (Street) NAARDEN 1411 DC 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 Common Stock 08/07/2026 C(1) 9,132,420 A $ 0 9,720,546 D(2) Common Stock 08/07/2026 C(1) 7,990,867 A $ 0 8,505,478 I By Forbion Ventures Fund VII Cooperatief U.A.(3) Common Stock 08/07/2026 P 1,920,000 A $18 11,640,546 D(2) Common Stock 08/07/2026 P 1,680,000 A $18 10,185,478 I By Forbion Ventures Fund VII Cooperatief U.A.(3)

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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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

Series A Preferred Stock

(1)

08/07/2026

C(1)

40,000,000

(1)

(1)

Common Stock

9,132,420

$ 0

0

D(2)

Series A Preferred Stock

(1)

08/07/2026

C(1)

35,000,000

(1)

(1)

Common Stock

7,990,867

$ 0

0

I

By Forbion Ventures Fund VII Cooperatief U.A.(3)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Forbion Growth Opportunities Fund III Cooperatief U.A. GOOIMEER 2-35 NAARDEN 1411 DC		X
Forbion Growth III Management B.V. GOOIMEER 2-35 NAARDEN 1411 DC		X
Forbion Ventures Fund VII Cooperatief U.A. GOOIMEER 2-35 NAARDEN 1411 DC		X
Forbion Ventures VII Management B.V. GOOIMEER 2-35 NAARDEN 1411 DC		X

Signatures

Forbion Growth Opportunities Fund III Cooperatief U.A., By: /s/ M.A. van Osch and /s/ G.J. Mulder, Directors of Director of Director		08/07/2026
**Signature of Reporting Person		Date
Forbion Growth III Management B.V., By: /s/ M.A. van Osch and /s/ G.J. Mulder, Directors of Director		08/07/2026
**Signature of Reporting Person		Date
Forbion Ventures Fund VII Cooperatief U.A., By: /s/ M.A. van Osch and /s/ G.J. Mulder, Directors of Director of Director		08/07/2026
**Signature of Reporting Person		Date
Forbion Ventures VII Management B.V., By: /s/ M.A. van Osch and /s/ G.J. Mulder, Directors of Director		08/07/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Upon the closing of the Issuer's initial public offering, each share of Series A Preferred Stock automatically converted into Common Stock on a one-for-4.38 basis without payment of consideration. The Series A Preferred Stock had no expiration date.
(2)	Forbion Growth III Management B.V. ("Forbion Growth III Management") is the director of Forbion Growth Opportunities Fund III Cooperatief U.A. (the "Forbion Growth III") and may be deemed to have voting and dispositive power over the securities beneficially owned by the Forbion Growth III. Each of the Reporting Persons disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any of the Reporting Persons are the beneficial owner of such shares for Section 16 or any other purpose.
(3)	Forbion Ventures VII Management B.V. ("Forbion VII Director") is the director of Forbion Ventures Fund VII Cooperatief U.A. (the "Forbion Ventures VII") and may be deemed to have voting and dispositive power over the securities beneficially owned by the Forbion Ventures VII. Each of the Reporting Persons disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any of the Reporting Persons are the beneficial owner of such shares for Section 16 or any other purpose.

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