NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q3 2018
Shares 1,189 Value ($000) $79 Avg Close — Range —
Q2 2018
Shares 2,266 Value ($000) $145 Avg Close — Range —
Q1 2018
Shares 786 Value ($000) $45 Avg Close — Range —
Q3 2017
Shares 3,626 Value ($000) $234 Avg Close — Range —
Q4 2016
Shares 359 Value ($000) $21 Avg Close — Range —
Q2 2016
Shares 1,128 Value ($000) $73 Avg Close — Range —
Q1 2016
Shares 200 Value ($000) $11 Avg Close — Range —
Q4 2015
Shares 281 Value ($000) $14 Avg Close — Range —
Q3 2015
Shares 47 Value ($000) $2 Avg Close — Range —
Q2 2015
Shares 807 Value ($000) $34 Avg Close — Range —
Q1 2015
Shares 1,439 Value ($000) $69 Avg Close — Range —
Q3 2014
Shares 2,514 Value ($000) $106 Avg Close — Range —
Q3 2013
Shares 2,464 Value ($000) $104 Avg Close — Range —
Q2 2013
Shares 768 Value ($000) $33 Avg Close — Range —