RHYTHM PHARMACEUTICALS INC

Ticker: RYTM CUSIP: 76243J105 Class: Common Stock

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q4 2025

Shares 64,479 Value ($000) $6,902 Avg Close $106.08 Range $95.27 - $122.20

Q3 2025

Shares 42,539 Value ($000) $4,296 Avg Close $92.84 Range $62.84 - $106.52

Q4 2024

Shares 18,390 Value ($000) $1,029 Avg Close $55.24 Range $46.80 - $68.58

Q3 2024

Shares 19,260 Value ($000) $1,009 Avg Close $47.92 Range $40.46 - $55.64

Q2 2024

Shares 19,010 Value ($000) $781 Avg Close $39.92 Range $35.17 - $45.92

Q1 2024

Shares 63,900 Value ($000) $2,769 Avg Close $43.76 Range $37.66 - $52.57

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	64,479	$6,902	$106.08	$95.27 - $122.20
Q3 2025	42,539	$4,296	$92.84	$62.84 - $106.52
Q4 2024	18,390	$1,029	$55.24	$46.80 - $68.58
Q3 2024	19,260	$1,009	$47.92	$40.46 - $55.64
Q2 2024	19,010	$781	$39.92	$35.17 - $45.92
Q1 2024	63,900	$2,769	$43.76	$37.66 - $52.57