WESTAR ENERGY INC

CUSIP: 95709T100 Class: COMMON STOCK

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

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

Q3 2017
Shares 5,800 Value ($000) $288 Avg Close — Range —
Q2 2017
Shares 3,352 Value ($000) $178 Avg Close — Range —
Q1 2017
Shares 4,152 Value ($000) $225 Avg Close — Range —
Q1 2016
Shares 298 Value ($000) $15 Avg Close — Range —
Q3 2014
Shares 745 Value ($000) $25 Avg Close — Range —
Q2 2014
Shares 3,645 Value ($000) $139 Avg Close — Range —
Q4 2013
Shares 1,815 Value ($000) $58 Avg Close — Range —
Q3 2013
Shares 715 Value ($000) $22 Avg Close — Range —