NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

KEYBANK NATIONAL ASSOCIATION/OH's Holding History (CIK: 0001089877)

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

Q1 2013
Shares 336,575 Value ($000) $14,748 Avg Close — Range —
Q4 2012
Shares 350,450 Value ($000) $15,490 Avg Close — Range —