NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT's Holding History (CIK: 0001329375)

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

Q3 2013
Shares 35,000 Value ($000) $1,469 Avg Close — Range —
Q2 2013
Shares 35,000 Value ($000) $1,487 Avg Close — Range —