GREAT PLAINS ENERGY INC

CUSIP: 391164100 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q1 2018
Shares 1,076,695 Value ($000) $34,229 Avg Close — Range —
Q4 2017
Shares 1,202,559 Value ($000) $38,771 Avg Close — Range —
Q3 2017
Shares 1,300,305 Value ($000) $39,399 Avg Close — Range —
Q2 2017
Shares 1,398,299 Value ($000) $40,942 Avg Close — Range —
Q1 2017
Shares 1,431,622 Value ($000) $41,832 Avg Close — Range —
Q4 2016
Shares 1,546,426 Value ($000) $42,295 Avg Close — Range —
Q3 2016
Shares 1,599,115 Value ($000) $43,640 Avg Close — Range —
Q2 2016
Shares 1,465,405 Value ($000) $44,549 Avg Close — Range —
Q1 2016
Shares 1,414,166 Value ($000) $45,607 Avg Close — Range —
Q4 2015
Shares 1,419,163 Value ($000) $38,757 Avg Close — Range —
Q3 2015
Shares 1,436,387 Value ($000) $38,811 Avg Close — Range —
Q2 2015
Shares 1,425,780 Value ($000) $34,447 Avg Close — Range —
Q1 2015
Shares 1,487,869 Value ($000) $39,696 Avg Close — Range —
Q4 2014
Shares 1,522,269 Value ($000) $43,247 Avg Close — Range —
Q3 2014
Shares 1,576,140 Value ($000) $38,096 Avg Close — Range —
Q2 2014
Shares 1,616,214 Value ($000) $43,427 Avg Close — Range —
Q1 2014
Shares 1,560,114 Value ($000) $42,186 Avg Close — Range —
Q4 2013
Shares 1,346,414 Value ($000) $32,637 Avg Close — Range —
Q3 2013
Shares 1,395,454 Value ($000) $30,979 Avg Close — Range —
Q2 2013
Shares 1,399,493 Value ($000) $31,545 Avg Close — Range —