[Form 4] 4D Molecular Therapeutics, Inc. Insider Trading Activity

Rhea-AI Filing Summary

4D Molecular Therapeutics, Inc. (FDMT)1,635 shares of common stock at $4.14 per share and, on the same date, sold 1,635 shares at $10.59 per share under a Rule 10b5-1 trading plan adopted on June 6, 2025. After these trades, the officer directly holds 3,594 shares of common stock and 75,230 stock options. The option underlying this transaction covers 1,635 shares and vests in equal monthly installments over four years starting from March 6, 2025, as long as the officer continues to serve the company.

11/19/2025 - 09:53 PM

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

X

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^*

Bizily Scott

(Last) (First) (Middle)

C/O 4D MOLECULAR THERAPEUTICS, INC.

5858 HORTON STREET #455

(Street)

EMERYVILLE CA 94608

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
4D Molecular Therapeutics, Inc. [ FDMT ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
11/17/2025

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	11/17/2025		M(1)		1,635	A	$4.14	5,229	D
Common Stock	11/17/2025		S(1)		1,635	D	$10.59	3,594	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (Right to Buy)	$4.14	11/17/2025		M(1)			1,635	(2)	03/05/2035	Common Stock	1,635	$0	75,230	D

Explanation of Responses:

1. Transaction made pursuant to a 10b5-1 trading plan adopted by the Reporting Person on June 6, 2025.

2. The shares underlying the stock option award shall vest and become exercisable as to 1/48th of the underlying shares on each monthly anniversary of March 6, 2025 (the "Vesting Commencement Date"), such that 100% of the shares subject to the option will be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date, while the grantee remains a service provider to the Company.

	/s/ Scott Bizily	11/19/2025
	** 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.

FAQ

What insider transaction did FDMT report on this Form 4?

The Chief Legal Officer of 4D Molecular Therapeutics (FDMT) exercised a stock option for 1,635 shares of common stock and sold 1,635 shares on 11/17/2025.

At what prices did the FDMT insider exercise and sell shares?

The officer exercised a stock option at an exercise price of $4.14 per share and sold 1,635 shares of common stock at a sale price of $10.59 per share.

How many FDMT shares and options does the reporting person own after the transaction?

Following the reported trades, the officer directly owns 3,594 shares of FDMT common stock and 75,230 stock options.

Was the FDMT insider trade made under a Rule 10b5-1 plan?

Yes. The filing states the transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 6, 2025.

What is the vesting schedule of the FDMT stock option involved?

The option for 1,635 shares vests as to 1/48th of the shares each month starting on March 6, 2025, with full vesting on the fourth anniversary, subject to continued service.

What is the role of the reporting person at 4D Molecular Therapeutics (FDMT)?

The reporting person is an officer of 4D Molecular Therapeutics, Inc., serving as the company’s Chief Legal Officer.