X0306 4 2015-04-15 0 0001114220 KERYX BIOPHARMACEUTICALS INC KERX 0001636994 Adams Brian C/O KERYX BIOPHARMACEUTICALS, INC. 750 LEXINGTON AVENUE NEW YORK NY 10022 0 1 0 0 VP and General Counsel Common Stock 2015-04-15 4 S 0 4320 12.40 D 59555 D Sale of a total of 4,320 shares of common stock was made in order to satisfy Mr. Adams' income tax withholding obligation upon the vesting of 13,334 shares of restricted stock on April 14, 2015. Mr. Adams had no discretion with respect to such sale, which was transacted automatically in accordance with the Issuer's corporate policies regarding the vesting of restricted stock. Includes 50,541 shares of restricted stock. /s/ Brian Adams 2015-04-17