X0306 4 2015-07-06 0 0001114220 KERYX BIOPHARMACEUTICALS INC KERX 0001434718 Oliviero James F III C/O KERYX BIOPHARMACEUTICALS, INC. 750 LEXINGTON AVENUE NEW YORK NY 10022 0 1 0 0 Chief Financial Officer Common Stock 2015-07-06 4 S 0 1943 9.61 D 209406 D Sale of a total of 1,943 shares of common stock was made in order to satisfy Mr. Oliviero's income tax withholding obligation upon the vesting of 4,687 shares of restricted stock on July 2, 2015. Mr. Oliviero 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 40,829 shares of restricted stock. /s/ James F. Oliviero, III 2015-07-08