PHATHOM PHARMACEUTICALS INC

Ticker: PHAT CUSIP: 71722W107 Class: Common Stock

EcoR1 Capital, LLC's Holding History (CIK: 0001587114)

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

Q4 2023

Shares 198,480 Value ($000) $1,812 Avg Close $8.62 Range $6.83 - $10.85

Q3 2023

Shares 700,000 Value ($000) $7,259 Avg Close $13.72 Range $10.01 - $17.02

Q2 2023

Shares 700,000 Value ($000) $10,024 Avg Close $11.53 Range $7.00 - $14.99

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2023	198,480	$1,812	$8.62	$6.83 - $10.85
Q3 2023	700,000	$7,259	$13.72	$10.01 - $17.02
Q2 2023	700,000	$10,024	$11.53	$7.00 - $14.99