Initial Statement of Beneficial Ownership (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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(Print or Type Responses)

1. Name and Address of Reporting Person * Ho Minh Quoc Thang 2. Date of Event Requiring Statement (Month/Day/Year) 10/29/2026 3. Issuer Name and Ticker or Trading Symbol Bambusa Therapeutics, Inc. [BBTX] (Last) (First) (Middle) C/O BAMBUSA THERAPEUTICS, INC., 22 BOSTON WHARF ROAD, FLOOR 7 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) See remarks 5. If Amendment, Date Original Filed (Month/Day/Year) (Street) BOSTON, MA 02210 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 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)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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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 of Derivative Security: 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
Stock Option (right to buy)	(1)	12/18/2034	Common Stock	103,891	$0.34	D
Stock Option (right to buy)	(2)	12/18/2034	Common Stock	141,290	$0.34	D
Stock Option (right to buy)	(3)	12/18/2034	Common Stock	23,172	$0.34	D
Stock Option (right to buy)	(4)	12/18/2034	Common Stock	15,448	$0.34	D
Stock Option (right to buy)	(5)	08/15/2035	Common Stock	128,503	$1.84	D
Stock Option (right to buy)	(6)	09/17/2036	Common Stock	261,079	$13.57	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Ho Minh Quoc Thang C/O BAMBUSA THERAPEUTICS, INC. 22 BOSTON WHARF ROAD, FLOOR 7 BOSTON, MA 02210			See remarks

Signatures

/s/ Jonathan I. Lieber, as attorney-in-fact		10/29/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Subject to the Reporting Person continuing to be an Employee (as defined in the Issuer's 2024 Stock Plan) through each applicable date, twenty five percent (25%) of the shares subject to the option shall vest on the one (1) year anniversary of the Vesting Commencement Date, and one forty-eighth (1/48th) of the shares subject to the option shall vest each month thereafter on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month). "Vesting Commencement Date" shall mean April 15, 2024.
(2)	Subject to the Reporting Person continuing to be an Employee (as defined in the Issuer's 2024 Stock Plan) through each applicable date, one forty-eighth (1/48th) of the shares subject to the option shall vest each month following the Vesting Commencement Date on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month). "Vesting Commencement Date" shall mean April 15, 2024.
(3)	Subject to the Reporting Person continuing to be an Employee (as defined in the Issuer's 2024 Stock Plan) through each applicable date, 1/48th of such shares on each monthly anniversary of the date that the Company obtains its first first-in-human trial approval from the FDA or a comparable non-U.S. regulatory body (which was obtained on January 31, 2025).
(4)	Subject to the Reporting Person continuing to be an Employee (as defined in the Issuer's 2024 Stock Plan) through each applicable date, 1/48th of the total number of such shares on each monthly anniversary of the date that the Company obtains its second first-in-human trial approval from the FDA or a comparable non-U.S. regulatory body (which was obtained on May 6, 2025).
(5)	Subject to the Reporting Person continuing to be an Employee (as defined in the Issuer's 2024 Stock Plan) through each applicable date, twenty five percent (25%) of the shares subject to the option shall vest on the one (1) year anniversary of the Vesting Commencement Date, and one forty-eighth (1/48th) of the shares subject to the option shall vest each month thereafter on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month). "Vesting Commencement Date" shall mean June 19, 2025.
(6)	Subject to the Reporting Person continuing to be an Employee (as defined in the Issuer's 2024 Stock Plan) through each applicable date, twenty five percent (25%) of the shares subject to the option shall vest on the one (1) year anniversary of the Vesting Commencement Date, and one forty-eighth (1/48th) of the shares subject to the option shall vest each month thereafter on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month). "Vesting Commencement Date" shall mean September 18, 2026.
Remarks: Co-Founder and Chief Development Officer; Exhibit 24 - Power of Attorney

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