NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

NISA INVESTMENT ADVISORS, LLC's Holding History (CIK: 0000937615)

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

Q3 2018
Shares 8,000 Value ($000) $535 Avg Close Range
Q2 2018
Shares 5,400 Value ($000) $345 Avg Close Range
Q1 2018
Shares 5,750 Value ($000) $304 Avg Close Range
Q4 2017
Shares 8,250 Value ($000) $492 Avg Close Range
Q3 2017
Shares 7,800 Value ($000) $502 Avg Close Range
Q2 2017
Shares 19,100 Value ($000) $1,156 Avg Close Range
Q1 2017
Shares 10,710 Value ($000) $633 Avg Close Range
Q4 2016
Shares 8,200 Value ($000) $490 Avg Close Range
Q3 2016
Shares 3,800 Value ($000) $228 Avg Close Range
Q2 2016
Shares 3,800 Value ($000) $246 Avg Close Range
Q1 2016
Shares 3,800 Value ($000) $205 Avg Close Range
Q4 2015
Shares 5,800 Value ($000) $294 Avg Close Range
Q3 2015
Shares 5,800 Value ($000) $262 Avg Close Range
Q2 2015
Shares 8,300 Value ($000) $350 Avg Close Range
Q1 2015
Shares 18,300 Value ($000) $877 Avg Close Range
Q4 2014
Shares 16,800 Value ($000) $838 Avg Close Range
Q3 2014
Shares 6,800 Value ($000) $287 Avg Close Range
Q2 2014
Shares 5,800 Value ($000) $273 Avg Close Range