ATHENAHEALTH INC

CUSIP: 04685W103 Class: COMMON STOCK

Rock Springs Capital Management LP's Holding History (CIK: 0001595725)

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

Q1 2017
Shares 62,750 Value ($000) $7,071 Avg Close — Range —
Q4 2016
Shares 62,750 Value ($000) $6,599 Avg Close — Range —
Q3 2016
Shares 45,750 Value ($000) $5,770 Avg Close — Range —
Q2 2016
Shares 45,750 Value ($000) $6,314 Avg Close — Range —
Q1 2016
Shares 45,750 Value ($000) $6,349 Avg Close — Range —
Q4 2015
Shares 39,500 Value ($000) $6,358 Avg Close — Range —
Q3 2015
Shares 38,000 Value ($000) $5,067 Avg Close — Range —
Q2 2015
Shares 38,000 Value ($000) $4,354 Avg Close — Range —
Q3 2014
Shares 67,750 Value ($000) $8,922 Avg Close — Range —
Q2 2014
Shares 62,250 Value ($000) $7,789 Avg Close — Range —
Q1 2014
Shares 19,500 Value ($000) $3,125 Avg Close — Range —
Q4 2013
Shares 19,500 Value ($000) $2,623 Avg Close — Range —