X0306 4 2016-01-05 0 0001437402 ARDELYX, INC. ARDX 0001663000 Korner Paul C/O ARDELYX, INC. 34175 ARDENWOOD BLVD, SUITE 200 FREMONT CA 94555 0 1 0 0 EVP, Chief Medical Officer Common Stock 2016-01-05 4 A 0 60753 0.00 A 60753 D Stock Option (Right to Buy) 16.46 2016-01-05 4 A 0 131405 0.00 A 2026-01-05 Common Stock 131405 131405 D Restricted Stock Units ("RSU"). The reporting person is entitled to receive one (1) share of common stock for each one (1) RSU upon the vesting thereof. The shares subject to the option vest with respect to 25% of the total number of shares subject thereto on the one year anniversary of January 4, 2016, and the remaining shares subject to the option vest in 36 successive, equal monthly installments on each monthly anniversary thereafter, 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 2016-01-07