MID-AMER APT CMNTYS INC

Ticker: MAA CUSIP: 59522J103 Class: Common Stock

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q3 2017

Shares 6,824 Value ($000) $729 Avg Close $78.62 Range $73.80 - $81.93

Q2 2017

Shares 6,807 Value ($000) $717 Avg Close $76.48 Range $71.51 - $82.47

Q1 2017

Shares 8,068 Value ($000) $821 Avg Close $72.80 Range $68.18 - $76.39

Q4 2016

Shares 7,797 Value ($000) $763 Avg Close $67.12 Range $61.53 - $71.84

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2017	6,824	$729	$78.62	$73.80 - $81.93
Q2 2017	6,807	$717	$76.48	$71.51 - $82.47
Q1 2017	8,068	$821	$72.80	$68.18 - $76.39
Q4 2016	7,797	$763	$67.12	$61.53 - $71.84