PHATHOM PHARMACEUTICALS INC

Ticker: PHAT CUSIP: 71722W107 Class: Common Stock

Pathstone Holdings, LLC's Holding History (CIK: 0002011612)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 14,900 Value ($000) $247 Avg Close $14.28 Range $10.33 - $18.31

Q3 2025

Shares 10,322 Value ($000) $121 Avg Close $10.32 Range $7.61 - $13.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	14,900	$247	$14.28	$10.33 - $18.31
Q3 2025	10,322	$121	$10.32	$7.61 - $13.00