NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

State of Alaska, Department of Revenue's Holding History (CIK: 0001370102)

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

Q3 2018
Shares 9,490 Value ($000) $634 Avg Close — Range —
Q2 2018
Shares 9,410 Value ($000) $600 Avg Close — Range —
Q1 2018
Shares 9,280 Value ($000) $534 Avg Close — Range —
Q4 2017
Shares 5,720 Value ($000) $341 Avg Close — Range —
Q3 2017
Shares 5,690 Value ($000) $366 Avg Close — Range —
Q2 2017
Shares 5,650 Value ($000) $338 Avg Close — Range —
Q1 2017
Shares 3,160 Value ($000) $186 Avg Close — Range —
Q4 2016
Shares 3,100 Value ($000) $185 Avg Close — Range —