NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

Robeco Institutional Asset Management B.V.'s Holding History (CIK: 0001418773)

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

Q3 2018
Shares 235,267 Value ($000) $15,739 Avg Close — Range —
Q2 2018
Shares 235,267 Value ($000) $15,009 Avg Close — Range —
Q1 2018
Shares 240,569 Value ($000) $13,870 Avg Close — Range —
Q4 2017
Shares 269,738 Value ($000) $16,088 Avg Close — Range —
Q3 2017
Shares 269,738 Value ($000) $17,371 Avg Close — Range —
Q2 2017
Shares 269,738 Value ($000) $16,144 Avg Close — Range —
Q1 2017
Shares 283,609 Value ($000) $16,759 Avg Close — Range —
Q4 2016
Shares 283,876 Value ($000) $16,977 Avg Close — Range —
Q3 2016
Shares 202,783 Value ($000) $12,190 Avg Close — Range —
Q2 2016
Shares 154,281 Value ($000) $10,001 Avg Close — Range —
Q1 2016
Shares 125,642 Value ($000) $6,768 Avg Close — Range —
Q4 2015
Shares 74,136 Value ($000) $3,752 Avg Close — Range —
Q3 2015
Shares 23,638 Value ($000) $1,084 Avg Close — Range —
Q2 2015
Shares 23,638 Value ($000) $997 Avg Close — Range —
Q1 2015
Shares 23,638 Value ($000) $1,134 Avg Close — Range —
Q4 2014
Shares 23,638 Value ($000) $1,180 Avg Close — Range —
Q3 2014
Shares 5,533 Value ($000) $234 Avg Close — Range —
Q2 2014
Shares 1,108 Value ($000) $52 Avg Close — Range —