X0306 4 2017-02-14 0 0001114220 KERYX BIOPHARMACEUTICALS INC KERX 0001636994 Adams Brian C/O KERYX BIOPHARMACEUTICALS, INC. ONE MARINA PARK DRIVE, 12TH FLOOR BOSTON MA 02210 0 1 0 0 General Counsel and Secretary Common Stock 2017-02-14 4 A 0 48750 0.00 A 141309 D Employee Stock Option (Right to Buy) 5.53 2017-02-14 4 A 0 97500 0.00 A 2018-02-14 2027-02-14 Common Stock 97500 97500 D The 48,750 shares are restricted common stock, with one-third of the 48,750 shares vesting on February 14, 2018 and one-twelfth vesting on each of May 14, 2018, August 14, 2018, November 14, 2018, February 14, 2019, May 14, 2019, August 14, 2019, November 14, 2019 and February 14, 2020. Includes 95,872 shares of restricted stock. The options vest according to the following schedule: one-third of the 97,500 options will vest on February 14, 2018 and one-twelfth will vest on each of May 14, 2018, August 14, 2018, November 14, 2018, February 14, 2019, May 14, 2019, August 14, 2019, November 14, 2019 and February 14, 2020. /s/ Brian Adams 2017-03-15