GREAT WESTN BANCORP INC

CUSIP: 391416104 Class: COM

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q3 2017
Shares 100 Value ($000) $4 Avg Close — Range —
Q1 2016
Shares 600 Value ($000) $16 Avg Close — Range —