X0306 4 2016-01-28 0 0001114220 KERYX BIOPHARMACEUTICALS INC KERX 0001564955 Madison Greg C/O KERYX BIOPHARMACEUTICALS, INC. ONE MARINA PARK DRIVE, 12TH FLOOR BOSTON MA 02210 1 1 0 0 President and CEO Common Stock 2016-01-28 4 A 0 153750 0.00 A 264570 D Employee Stock Option (Right to Buy) 3.35 2016-01-28 4 A 0 307500 0.00 A 2017-01-28 2026-01-28 Common Stock 307500 307500 D The 153,750 shares are restricted common stock, with one-third of the 153,750 shares vesting on January 28, 2017 and one-twelfth vesting on each of April 28, 2017, July 28, 2017, October 28, 2017, January 28, 2018, April 28, 2018, July 28, 2018, October 28, 2018, and January 28, 2019. Includes 201,333 shares of restricted stock. The options vest according to the following schedule: one-third of the 307,500 options will vest on January 28, 2017 and one-twelfth will vest on each of April 28, 2017, July 28, 2017, October 28, 2017, January 28, 2018, April 28, 2018, July 28, 2018, October 28, 2018, and January 28, 2019. /s/ Brian Adams 2016-02-01