NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

Walleye Trading LLC's Holding History (CIK: 0001388391)

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

Q4 2017
Shares 6,330 Value ($000) $378 Avg Close — Range —
Q1 2016
Shares 2,075 Value ($000) $112 Avg Close — Range —
Q4 2015
Shares 3,331 Value ($000) $169 Avg Close — Range —
Q3 2015
Shares 5,485 Value ($000) $251 Avg Close — Range —
Q2 2015
Shares 1,120 Value ($000) $47 Avg Close — Range —
Q3 2014
Shares 4,363 Value ($000) $184 Avg Close — Range —