NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q3 2018
Shares 32,700 Value ($000) $2,188 Avg Close — Range —
Q2 2018
Shares 32,700 Value ($000) $2,086 Avg Close — Range —
Q1 2018
Shares 32,700 Value ($000) $1,885 Avg Close — Range —
Q4 2017
Shares 32,700 Value ($000) $1,951 Avg Close — Range —
Q3 2017
Shares 32,700 Value ($000) $2,106 Avg Close — Range —
Q2 2017
Shares 32,700 Value ($000) $1,957 Avg Close — Range —
Q1 2017
Shares 32,700 Value ($000) $1,933 Avg Close — Range —
Q4 2016
Shares 32,700 Value ($000) $1,955 Avg Close — Range —
Q3 2016
Shares 32,700 Value ($000) $1,966 Avg Close — Range —
Q2 2016
Shares 33,100 Value ($000) $2,146 Avg Close — Range —
Q1 2016
Shares 37,100 Value ($000) $1,998 Avg Close — Range —
Q4 2015
Shares 39,100 Value ($000) $1,979 Avg Close — Range —
Q3 2015
Shares 39,100 Value ($000) $1,792 Avg Close — Range —
Q2 2015
Shares 39,100 Value ($000) $1,649 Avg Close — Range —
Q1 2015
Shares 39,100 Value ($000) $1,875 Avg Close — Range —
Q4 2014
Shares 39,574 Value ($000) $1,975 Avg Close — Range —
Q3 2014
Shares 39,574 Value ($000) $1,672 Avg Close — Range —
Q2 2014
Shares 31,100 Value ($000) $1,466 Avg Close — Range —
Q1 2014
Shares 11,100 Value ($000) $489 Avg Close — Range —