AIR METHODS CORP

CUSIP: 009128307 Class: COM PAR $.06

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

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

Q4 2016
Shares 279,671 Value ($000) $8,908 Avg Close — Range —
Q3 2016
Shares 281,968 Value ($000) $8,879 Avg Close — Range —
Q2 2016
Shares 264,712 Value ($000) $9,485 Avg Close — Range —
Q1 2016
Shares 365,212 Value ($000) $13,228 Avg Close — Range —
Q4 2015
Shares 340,343 Value ($000) $14,271 Avg Close — Range —
Q3 2015
Shares 325,370 Value ($000) $11,092 Avg Close — Range —