SEC FORM 4

SEC FORM 4 SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

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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 for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Nguyen Alexander Hieu

(Last)

(First)

(Middle)

C/O UNITY BIOTECHNOLOGY, INC.

285 EAST GRAND AVENUE

(Street)

SOUTH SAN FRANCISCO

94080

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Unity Biotechnology, Inc. [ UBX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	CLO and Head of Ops

3. Date of Earliest Transaction (Month/Day/Year)
03/27/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, $0.0001 par value	03/27/2025		S⁽¹⁾		1,954	D	$1.16	22,605⁽²⁾	D
Common Stock, $0.0001 par value	03/28/2025		A		44,000⁽³⁾	A	$0	66,605⁽⁴⁾	D

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 Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option (Right to Buy)	$1.67	03/28/2025		A		73,000		⁽⁵⁾	03/27/2035	Common Stock	73,000	$0	73,000	D

Explanation of Responses:

1. Shares sold by the Reporting Person pursuant to a Rule 10b5-1 trading instruction to cover tax withholding obligations incurred in connection with the vesting of Restricted Stock Units.

2. Includes Restricted Stock Units ("RSUs") that vest over time measured from the grant date.

3. On January 30, 2024, the Board of Directors granted the Reporting Person 44,000 RSUs that vest in full upon the satisfaction of certain performance criteria, which were met on March 28, 2025.

4. Includes RSUs that vest over time measured from the grant date.

5. On January 30, 2024, the Board of Directors granted the Reporting Person an option to purchase 73,000 shares of common stock. The underlying shares vest and become exercisable pursuant to the following schedule: one half of the shares subject to the option vest upon the satisfaction of certain performance criteria, which were met on March 28, 2025, and the remaining shares subject to the option vest in 12 successive, equal monthly installments thereafter until fully vested, subject to the Reporting Person's continued service to the Issuer through each applicable vesting date.

	/s/ Alexander Hieu Nguyen	03/31/2025
	** Signature of Reporting Person	Date
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

CLO and Head of Ops Nguyen Alexander Hieu sold $2,267 worth of shares (1,954 units at $1.16) and was granted 44,000 shares, increasing direct ownership by 171% to 66,605 units (SEC Form 4)