ATHENAHEALTH INC

CUSIP: 04685W103 Class: COMMON STOCK

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q2 2016
Shares 3,246 Value ($000) $448 Avg Close — Range —
Q1 2016
Shares 3,248 Value ($000) $451 Avg Close — Range —
Q4 2015
Shares 6,000 Value ($000) $966 Avg Close — Range —