Form 3 Filing by Christopher Paul Simms

This filing reports initial ownership of securities by Christopher Paul Simms, who is an officer of 4D Molecular Therapeutics, Inc. (FDMT). The filing details two stock options granted to Mr. Simms. The first option, for 300,000 shares of Common Stock, has an exercise price of $9.38 and an expiration date of October 7, 2034. Vesting for this option begins on September 11, 2024, with 25% vesting on the first anniversary and the remainder vesting monthly over the following three years. The second option is for 32,403 shares of Common Stock, with an exercise price of $4.14 and an expiration date of March 5, 2035. Vesting for this second option begins on March 6, 2025, with 1/48th of the shares vesting monthly over four years. Both options require Mr. Simms to remain a service provider to the company to vest.