NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

PARNASSUS INVESTMENTS, LLC's Holding History (CIK: 0000948669)

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

Q2 2018
Shares 447,973 Value ($000) $28,581 Avg Close — Range —
Q1 2018
Shares 397,500 Value ($000) $22,916 Avg Close — Range —
Q4 2017
Shares 397,500 Value ($000) $23,711 Avg Close — Range —
Q3 2017
Shares 397,500 Value ($000) $25,599 Avg Close — Range —
Q2 2017
Shares 397,500 Value ($000) $23,790 Avg Close — Range —
Q1 2017
Shares 397,500 Value ($000) $23,492 Avg Close — Range —
Q4 2016
Shares 397,500 Value ($000) $23,771 Avg Close — Range —
Q3 2016
Shares 397,500 Value ($000) $23,894 Avg Close — Range —
Q2 2016
Shares 280,000 Value ($000) $18,150 Avg Close — Range —
Q1 2016
Shares 1,035,400 Value ($000) $55,756 Avg Close — Range —
Q4 2015
Shares 2,691,177 Value ($000) $136,200 Avg Close — Range —
Q3 2015
Shares 2,686,303 Value ($000) $118,174 Avg Close — Range —
Q2 2015
Shares 2,564,785 Value ($000) $108,183 Avg Close — Range —
Q1 2015
Shares 2,649,218 Value ($000) $127,030 Avg Close — Range —
Q4 2014
Shares 2,540,885 Value ($000) $126,790 Avg Close — Range —
Q3 2014
Shares 2,454,498 Value ($000) $103,703 Avg Close — Range —
Q2 2014
Shares 2,341,529 Value ($000) $110,403 Avg Close — Range —
Q1 2014
Shares 2,091,838 Value ($000) $92,062 Avg Close — Range —
Q4 2013
Shares 2,006,838 Value ($000) $85,933 Avg Close — Range —
Q3 2013
Shares 1,668,935 Value ($000) $70,062 Avg Close — Range —
Q2 2013
Shares 1,667,000 Value ($000) $70,814 Avg Close — Range —