ARDELYX INC

Ticker: ARDX CUSIP: 039697107 Class: Common Stock

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

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

Q4 2016

Shares 1,310,023 Value ($000) $18,602 Avg Close $14.20 Range $10.55 - $16.30

Q3 2016

Shares 1,310,023 Value ($000) $16,952 Avg Close $10.48 Range $8.42 - $13.29

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	1,310,023	$18,602	$14.20	$10.55 - $16.30
Q3 2016	1,310,023	$16,952	$10.48	$8.42 - $13.29