ATHENAHEALTH INC

CUSIP: 04685W103 Class: COMMON STOCK

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2018
Shares 63,002 Value ($000) $8,312 Avg Close — Range —
Q3 2018
Shares 61,538 Value ($000) $8,221 Avg Close — Range —
Q2 2018
Shares 61,560 Value ($000) $9,797 Avg Close — Range —
Q1 2018
Shares 60,464 Value ($000) $8,648 Avg Close — Range —
Q4 2017
Shares 62,584 Value ($000) $8,326 Avg Close — Range —
Q3 2017
Shares 63,567 Value ($000) $7,905 Avg Close — Range —
Q2 2017
Shares 70,328 Value ($000) $9,885 Avg Close — Range —
Q1 2017
Shares 77,249 Value ($000) $8,705 Avg Close — Range —
Q4 2016
Shares 80,949 Value ($000) $8,513 Avg Close — Range —
Q3 2016
Shares 83,049 Value ($000) $10,474 Avg Close — Range —
Q2 2016
Shares 82,349 Value ($000) $11,365 Avg Close — Range —
Q1 2016
Shares 81,940 Value ($000) $11,372 Avg Close — Range —
Q4 2015
Shares 71,465 Value ($000) $11,504 Avg Close — Range —
Q3 2015
Shares 70,312 Value ($000) $9,376 Avg Close — Range —
Q2 2015
Shares 70,412 Value ($000) $8,068 Avg Close — Range —
Q1 2015
Shares 69,394 Value ($000) $8,285 Avg Close — Range —
Q4 2014
Shares 70,494 Value ($000) $10,271 Avg Close — Range —
Q3 2014
Shares 69,895 Value ($000) $9,204 Avg Close — Range —
Q2 2014
Shares 71,958 Value ($000) $9,004 Avg Close — Range —
Q1 2014
Shares 66,798 Value ($000) $10,704 Avg Close — Range —
Q4 2013
Shares 66,498 Value ($000) $8,944 Avg Close — Range —
Q3 2013
Shares 66,098 Value ($000) $7,176 Avg Close — Range —
Q2 2013
Shares 64,024 Value ($000) $5,424 Avg Close — Range —
Q1 2013
Shares 62,332 Value ($000) $6,049 Avg Close — Range —