WESTAR ENERGY INC

CUSIP: 95709T100 Class: COMMON STOCK

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q1 2018
Shares 234,612 Value ($000) $12,338 Avg Close — Range —
Q4 2017
Shares 241,883 Value ($000) $12,771 Avg Close — Range —
Q3 2017
Shares 240,273 Value ($000) $11,918 Avg Close — Range —
Q2 2017
Shares 261,417 Value ($000) $13,861 Avg Close — Range —
Q1 2017
Shares 289,653 Value ($000) $15,719 Avg Close — Range —
Q4 2016
Shares 302,753 Value ($000) $17,060 Avg Close — Range —
Q3 2016
Shares 310,653 Value ($000) $17,630 Avg Close — Range —
Q2 2016
Shares 307,953 Value ($000) $17,273 Avg Close — Range —
Q1 2016
Shares 308,604 Value ($000) $15,310 Avg Close — Range —
Q4 2015
Shares 270,136 Value ($000) $11,456 Avg Close — Range —
Q3 2015
Shares 265,946 Value ($000) $10,223 Avg Close — Range —
Q2 2015
Shares 241,514 Value ($000) $8,265 Avg Close — Range —
Q1 2015
Shares 243,508 Value ($000) $9,438 Avg Close — Range —
Q4 2014
Shares 247,732 Value ($000) $10,216 Avg Close — Range —
Q3 2014
Shares 245,481 Value ($000) $8,376 Avg Close — Range —
Q2 2014
Shares 235,356 Value ($000) $8,988 Avg Close — Range —
Q1 2014
Shares 231,256 Value ($000) $8,131 Avg Close — Range —
Q4 2013
Shares 230,256 Value ($000) $7,407 Avg Close — Range —
Q3 2013
Shares 228,156 Value ($000) $6,993 Avg Close — Range —
Q2 2013
Shares 221,110 Value ($000) $7,067 Avg Close — Range —
Q1 2013
Shares 219,363 Value ($000) $7,278 Avg Close — Range —