X0306 4 2017-01-19 0 0001437402 ARDELYX, INC. ARDX 0001663000 Korner Paul C/O ARDELYX, INC. 34175 ARDENWOOD BLVD, SUITE 100 FREMONT CA 94555 0 1 0 0 EVP, Chief Medical Officer Common Stock 2017-01-19 4 A 0 17985 0.00 A 72608 D Stock Option (Right to Buy) 13.90 2017-01-19 4 A 0 74233 0.00 A 2027-01-19 Common Stock 74233 74233 D Restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) shares of Common Stock for each one (1) RSU upon the vesting thereof. The option becomes exercisable as it vests and the shares subject to the option vest in 48 successive, equal monthly installments on each monthly anniversary of January 19, 2017, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date. /s/ Elizabeth Grammer, Attorney-in-Fact for Paul Korner 2017-01-23