NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

Spark Investment Management LLC's Holding History (CIK: 0001554871)

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

Q3 2016
Shares 15,900 Value ($000) $955 Avg Close — Range —
Q2 2016
Shares 15,900 Value ($000) $1,030 Avg Close — Range —