KERYX BIOPHARMACEUTICALS INC

CUSIP: 492515101 Class: COMMON STOCK

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

Note: Option positions (PUT/CALL) are excluded.

Q1 2014
Shares 172,078 Value ($000) $2,933 Avg Close — Range —
Q4 2013
Shares 413,464 Value ($000) $5,354 Avg Close — Range —
Q3 2013
Shares 486,900 Value ($000) $4,918 Avg Close — Range —