ATHENAHEALTH INC

CUSIP: 04685W103 Class: COMMON STOCK

SANDS CAPITAL MANAGEMENT, LLC's Holding History (CIK: 0001020066)

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

Q3 2017
Shares 786,576 Value ($000) $97,819 Avg Close — Range —
Q2 2017
Shares 2,307,342 Value ($000) $324,297 Avg Close — Range —
Q1 2017
Shares 2,537,307 Value ($000) $285,929 Avg Close — Range —
Q4 2016
Shares 2,749,185 Value ($000) $289,132 Avg Close — Range —
Q3 2016
Shares 3,096,758 Value ($000) $390,563 Avg Close — Range —
Q2 2016
Shares 3,358,482 Value ($000) $463,504 Avg Close — Range —
Q1 2016
Shares 3,589,107 Value ($000) $498,096 Avg Close — Range —
Q4 2015
Shares 4,167,503 Value ($000) $670,843 Avg Close — Range —
Q3 2015
Shares 4,399,018 Value ($000) $586,609 Avg Close — Range —
Q2 2015
Shares 4,496,359 Value ($000) $515,193 Avg Close — Range —
Q1 2015
Shares 4,786,729 Value ($000) $571,488 Avg Close — Range —
Q4 2014
Shares 4,810,009 Value ($000) $700,818 Avg Close — Range —
Q3 2014
Shares 4,850,197 Value ($000) $638,722 Avg Close — Range —
Q2 2014
Shares 4,836,281 Value ($000) $605,164 Avg Close — Range —
Q1 2014
Shares 4,194,760 Value ($000) $672,168 Avg Close — Range —
Q4 2013
Shares 3,380,077 Value ($000) $454,620 Avg Close — Range —
Q3 2013
Shares 3,472,394 Value ($000) $377,033 Avg Close — Range —
Q2 2013
Shares 3,548,897 Value ($000) $300,698 Avg Close — Range —