ROWAN COMPANIES INC

CUSIP: 779382100 Class: CMN

Zurcher Kantonalbank (Zurich Cantonalbank)'s Holding History (CIK: 0001368163)

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

Q1 2012
Shares 3,152 Value ($000) $104 Avg Close — Range —
Q4 2011
Shares 2,014 Value ($000) $61 Avg Close — Range —