X0306 4 2015-01-04 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 2015-01-04 4 A 0 23875 0.00 A 177220 D Common Stock 2015-01-05 4 S 0 5604 13.79 D 171616 D Employee Stock Option (Right to Buy) 14.34 2015-01-04 4 A 0 47750 0.00 A 2016-01-04 2025-01-04 Common Stock 47750 47750 D The 23,875 shares are restricted common stock, with one-third of the 23,875 shares vesting on January 4, 2016, and one-twelfth vesting on each of April 4, 2016, July 4, 2016, October 4, 2016, January 4, 2017, April 4, 2017, July 4, 2017, October 4, 2017, and January 4, 2018. Includes 50,205 shares of restricted stock. Sale of a total of 5,604 shares of common stock was made in order to satisfy Mr. Oliviero's income tax withholding obligation upon the vesting of 12,703 shares of restricted stock on January 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. The options vest according to the following schedule: one-third of the 47,750 options will vest on January 4, 2016, and one-twelfth will vest on each of April 4, 2016, July 4, 2016, October 4, 2016, January 4, 2017, April 4, 2017, July 4, 2017, October 4, 2017, and January 4, 2018. /s/ James F. Oliviero, III 2015-01-06