Robert Charles Breedlove - 18 Dec 2025 Form 4 Insider Report for Phathom Pharmaceuticals, Inc. (PHAT)

Role: Principal Accounting Officer
Signature: /s/ Robert Charles Breedlove
Issuer symbol: PHAT
Transactions as of: 18 Dec 2025
Net transactions value: -$3,744
Form type: 4
Filing time: 19 Dec 2025, 17:50:58 UTC
Previous filing: 05 Nov 2025
Next filing: 23 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Breedlove Robert Charles	Principal Accounting Officer	C/O PHATHOM PHARMACEUTICALS, INC., 100 CAMPUS DRIVE, SUITE 102, FLORHAM PARK	/s/ Robert Charles Breedlove	19 Dec 2025	0002066645

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PHAT	Common Stock	Tax liability	$3,744	-230	-0.48%	$16.28	47,844	18 Dec 2025	Direct	F1
holding	PHAT	Common Stock						6,945	18 Dec 2025	By 401(k)

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares underlying the restricted stock units that were surrendered by the reporting person to the Issuer in satisfaction of the Issuer's tax withholding obligation.