NORTHWEST NAT GAS CO

CUSIP: 667655104 Class: COM

GSA CAPITAL PARTNERS LLP's Holding History (CIK: 0001362033)

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

Q2 2017
Shares 5,317 Value ($000) $318 Avg Close — Range —
Q2 2016
Shares 3,864 Value ($000) $250 Avg Close — Range —