RHYTHM PHARMACEUTICALS INC

Ticker: RYTM CUSIP: 76243J105 Class: Common Stock

GILDER GAGNON HOWE & CO LLC's Holding History (CIK: 0000902464)

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

Q3 2021

Shares 1,496,424 Value ($000) $19,543 Avg Close $15.27 Range $11.53 - $20.81

Q2 2021

Shares 1,489,123 Value ($000) $29,157 Avg Close $20.76 Range $18.19 - $23.35

Q1 2021

Shares 1,523,234 Value ($000) $32,399 Avg Close $29.00 Range $19.13 - $43.26

Q4 2020

Shares 385,532 Value ($000) $11,462 Avg Close $25.42 Range $20.49 - $34.27

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	1,496,424	$19,543	$15.27	$11.53 - $20.81
Q2 2021	1,489,123	$29,157	$20.76	$18.19 - $23.35
Q1 2021	1,523,234	$32,399	$29.00	$19.13 - $43.26
Q4 2020	385,532	$11,462	$25.42	$20.49 - $34.27