BLACKROCK INC

CUSIP: 09247x101 Class: Common

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q4 2014
Shares 177,030 Value ($000) $63,299 Avg Close — Range —
Q4 2013
Shares 177,017 Value ($000) $56,021 Avg Close — Range —
Q3 2013
Shares 182,322 Value ($000) $59,860 Avg Close — Range —