EXPRESS SCRIPTS INC

CUSIP: 302182100 Class: COM

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

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

Q1 2012
Shares 30,249 Value ($000) $1,639 Avg Close — Range —
Q4 2011
Shares 29,441 Value ($000) $1,316 Avg Close — Range —