NSTAR

CUSIP: 67019E107 Class: COM

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

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

Q1 2012
Shares 3,134 Value ($000) $152 Avg Close — Range —
Q4 2011
Shares 1,805 Value ($000) $85 Avg Close — Range —