NATIONAL GRID PLC

CUSIP: 636274300 Class: SPONSORED ADR NE

Northwest & Ethical Investments L.P.'s Holding History (CIK: 0002033536)

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

Q1 2012
Shares 41,500 Value ($000) $2,095 Avg Close — Range —
Q4 2011
Shares 41,500 Value ($000) $2,012 Avg Close — Range —
Q3 2011
Shares 60,000 Value ($000) $2,976 Avg Close — Range —
Q2 2011
Shares 60,000 Value ($000) $2,966 Avg Close — Range —
Q1 2011
Shares 60,000 Value ($000) $2,882 Avg Close — Range —
Q4 2010
Shares 60,000 Value ($000) $2,663 Avg Close — Range —
Q3 2010
Shares 60,000 Value ($000) $2,564 Avg Close — Range —