Phathom Pharmaceuticals, Inc. — Director's Dealing 2025

Mar 3, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Phathom Pharmaceuticals, Inc. (PHAT)
CIK: 0001783183
Period of Report: 2025-02-27

Reporting Person: Henderson Molly (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-27	Common Stock	A	72000	—	Acquired	165546	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-27	Stock Option (Right to Buy)	$5.76	A	50000	Acquired	2035-02-26	Common Stock (50000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1911.27	Indirect

Footnotes

F1: Represents restricted stock units ("RSUs") granted on February 27, 2025. One third (1/3) of the total number of RSUs granted vest on each of the first three anniversaries of February 27, 2025, the vesting commencement date, subject to the Reporting Person's continued service on the applicable vesting date. Each RSU represents a contingent right to receive one share of common stock of the Issuer.

F2: The stock option will vest with respect to 25% of the shares of common stock on February 27, 2026, and will vest with respect to the remaining shares in equal monthly installments over the following three years, subject to the reporting person's continuous service to the Company on the applicable vesting dates.