NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q3 2018
Shares 323,235 Value ($000) $21,625 Avg Close — Range —
Q2 2018
Shares 360,386 Value ($000) $22,993 Avg Close — Range —
Q1 2018
Shares 356,812 Value ($000) $20,571 Avg Close — Range —
Q4 2017
Shares 358,772 Value ($000) $21,400 Avg Close — Range —
Q3 2017
Shares 360,729 Value ($000) $23,230 Avg Close — Range —
Q2 2017
Shares 355,037 Value ($000) $21,249 Avg Close — Range —
Q1 2017
Shares 338,490 Value ($000) $20,005 Avg Close — Range —
Q4 2016
Shares 337,697 Value ($000) $20,193 Avg Close — Range —
Q3 2016
Shares 324,508 Value ($000) $19,506 Avg Close — Range —
Q2 2016
Shares 318,435 Value ($000) $20,640 Avg Close — Range —
Q1 2016
Shares 314,874 Value ($000) $16,956 Avg Close — Range —
Q4 2015
Shares 310,995 Value ($000) $15,740 Avg Close — Range —
Q3 2015
Shares 297,463 Value ($000) $13,636 Avg Close — Range —
Q2 2015
Shares 297,920 Value ($000) $12,566 Avg Close — Range —
Q1 2015
Shares 323,269 Value ($000) $15,501 Avg Close — Range —
Q4 2014
Shares 319,446 Value ($000) $15,941 Avg Close — Range —
Q3 2014
Shares 332,982 Value ($000) $14,069 Avg Close — Range —
Q2 2014
Shares 344,636 Value ($000) $16,250 Avg Close — Range —
Q1 2014
Shares 379,901 Value ($000) $16,719 Avg Close — Range —
Q4 2013
Shares 403,214 Value ($000) $17,265 Avg Close — Range —
Q3 2013
Shares 405,077 Value ($000) $17,004 Avg Close — Range —
Q2 2013
Shares 412,755 Value ($000) $17,534 Avg Close — Range —