AIR METHODS CORP

CUSIP: 009128307 Class: COM PAR $.06

GW&K Investment Management, LLC's Holding History (CIK: 0001082917)

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

Q2 2016
Shares 191,605 Value ($000) $6,865 Avg Close — Range —
Q1 2016
Shares 372,601 Value ($000) $13,496 Avg Close — Range —
Q4 2015
Shares 689,461 Value ($000) $28,909 Avg Close — Range —
Q3 2015
Shares 706,082 Value ($000) $24,070 Avg Close — Range —
Q2 2015
Shares 677,025 Value ($000) $27,988 Avg Close — Range —
Q1 2015
Shares 684,724 Value ($000) $31,901 Avg Close — Range —
Q4 2014
Shares 680,414 Value ($000) $29,959 Avg Close — Range —
Q3 2014
Shares 649,945 Value ($000) $36,104 Avg Close — Range —
Q2 2014
Shares 784,779 Value ($000) $40,534 Avg Close — Range —
Q1 2014
Shares 732,196 Value ($000) $39,121 Avg Close — Range —
Q4 2013
Shares 733,963 Value ($000) $42,761 Avg Close — Range —
Q3 2013
Shares 706,864 Value ($000) $30,086 Avg Close — Range —
Q2 2013
Shares 608,269 Value ($000) $20,596 Avg Close — Range —