NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

PRELUDE CAPITAL MANAGEMENT, LLC's Holding History (CIK: 0001387508)

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

Q3 2014
Shares 2,203 Value ($000) $93 Avg Close — Range —
Q1 2014
Shares 130 Value ($000) $6 Avg Close — Range —
Q3 2013
Shares 14,000 Value ($000) $588 Avg Close — Range —
Q2 2013
Shares 14,000 Value ($000) $595 Avg Close — Range —