Phathom Pharmaceuticals, Inc. — Director's Dealing 2026

Feb 12, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Phathom Pharmaceuticals, Inc. (PHAT)
CIK: 0001783183
Period of Report: 2026-02-10

Reporting Person: Cook Anne Marie (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-10	Common Stock	A	3461	—	Acquired	90195	Direct
2026-02-10	Common Stock	F	1535	$12.82	Disposed	88660	Direct

Footnotes

F1: Represents shares issued upon vesting of performance stock units granted to the reporting person on June 23, 2025 based on the achievement of performance criteria determined to be satisfied on February 10, 2026.

F2: Includes 1,722 shares acquired under the Phathom Pharmaceuticals, Inc. employee stock purchase plan in January 2026.

F3: Represents shares underlying the performance stock units that were surrendered by the reporting person to the Issuer in satisfaction of the Issuer's tax withholding obligation.