X0206 3 2015-12-09 0 0001114220 KERYX BIOPHARMACEUTICALS INC KERX 0001591467 Butler John P. C/O KERYX BIOPHARMACEUTICALS, INC. ONE MARINA PARK DRIVE, 12TH FLOOR BOSTON MA 02210 1 0 0 0 Common Stock (Restricted) 10000 D Stock Options (Right to Buy) 4.50 2016-12-09 2025-12-09 Common Stock 50000 D The shares of restricted stock vest as follows: 1/3 of each on December 9, 2016, December 9, 2017, and December 9, 2018. The options vest as follows: 16,667 on December 9, 2016; 16,667 on December 9, 2017; and 16,666 on December 9, 2018. /s/ Brian Adams, Attorney-in-Fact 2015-12-10