Robert Charles Breedlove - 21 Jan 2026 Form 4 Insider Report for Phathom Pharmaceuticals, Inc. (PHAT)

Role: Principal Accounting Officer
Signature: /s/ Robert Charles Breedlove
Issuer symbol: PHAT
Transactions as of: 21 Jan 2026
Net transactions value: -$10,561
Form type: 4
Filing time: 23 Jan 2026, 16:42:13 UTC
Previous filing: 19 Dec 2025
Next filing: 03 Mar 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	23 Jan 2026	0002066645

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PHAT	Common Stock	Tax liability	$10,561	-776	-1.6%	$13.61	47,068	21 Jan 2026	Direct	F1
holding	PHAT	Common Stock						6,945	21 Jan 2026	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.