COVANCE INC

CUSIP: 222816100 Class: COM

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

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

Q2 2012
Shares 7,000 Value ($000) $335 Avg Close — Range —
Q1 2012
Shares 8,043 Value ($000) $383 Avg Close — Range —
Q4 2011
Shares 8,043 Value ($000) $368 Avg Close — Range —