Form 4 for PHAT Phathom Pharmaceuticals, Inc.

Accepted 2025-06-05 00:00:00 ET · period of report 2025-06-03 · accession 0000950170-25-082454 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2025-06-05	2025-06-03	PHAT	Topper James N	Dir, 10%	A - Grant	$0.00	+10.5K	42.6K	+33%	$0
D	2025-06-05	2025-06-03	PHAT	Topper James N	Dir, 10%	A - Grant	$0.00	+17.5K	17.5K	New	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2025-06-03	A	A	10,500	$0.00	42,596	D	—	—	(F1) The Restricted Stock Units ("RSUs") were granted on June 3, 2025, pursuant to the Issuer's Non-Employee Director Compensation Program. 100% of the total number of RSUs granted shall vest on the first to occur of (A) the first anniversary of the date of grant or (B) the next occurring annual meeting of the Issuer's stockholders, subject to the Reporting Person's continuing service on the Board through such vesting date. Each RSU represents a contingent right to receive one share of common stock of the Issuer.
2	Derivative	Stock Option (Right to Buy)	2025-06-03	A	A	17,500	$0.00	17,500	D	$4.95 · — to 2035-06-02	17,500 Common Stock	(F6) The option was granted pursuant to the Issuer's Non-Employee Director Compensation Program. The option shall vest and/or become exercisable on the first to occur of (A) the firstanniversary of the date of grant or (B) the next occurring annual meeting of the Issuer's stockholders, subject to Reporting Person's continuing in service on the Board through such vestingdate.