PHATHOM PHARMACEUTICALS INC

Ticker: PHAT CUSIP: 71722W107 Class: Common Stock

Optiver Holding B.V.'s Holding History (CIK: 0001859606)

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

Q4 2025

Shares 198 Value ($000) $3 Avg Close $14.28 Range $10.33 - $18.31

Q3 2025

Shares 584 Value ($000) $7 Avg Close $10.32 Range $7.61 - $13.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	198	$3	$14.28	$10.33 - $18.31
Q3 2025	584	$7	$10.32	$7.61 - $13.00