| SC 13G | 2015-02-13 | ATHENAHEALTH INC | CASTLIGHT HEALTH, INC. | 3,495,495 | 10.2% | EDGAR |
| SC 13G/A | 2015-02-12 | MORGAN STANLEY | ATHENAHEALTH INC | 4,850,591 | 12.7% | EDGAR |
| SC 13G/A | 2015-02-12 | SANDS CAPITAL MANAGEMENT, LLC | ATHENAHEALTH INC | 4,810,009 | 12.6% | EDGAR |
| SC 13G/A | 2015-02-10 | BlackRock Inc. | ATHENAHEALTH INC | 1,879,359 | 4.9% | EDGAR |
| SC 13G/A | 2015-02-10 | VANGUARD GROUP INC | ATHENAHEALTH INC | 2,295,750 | 6.0% | EDGAR |
| SC 13G | 2015-02-03 | BlackRock Inc. | ATHENAHEALTH INC | 2,126,837 | 5.6% | EDGAR |
| SC 13G/A | 2015-01-30 | Artisan Partners Limited Partnership | ATHENAHEALTH INC | 3,083,380 | 8.1% | EDGAR |
| SC 13G/A | 2014-07-10 | BlackRock Inc. | ATHENAHEALTH INC | 1,299,128 | 3.4% | EDGAR |
| SC 13G/A | 2014-03-24 | Artisan Partners Limited Partnership | ATHENAHEALTH INC | 2,873,262 | 7.7% | EDGAR |
| SC 13G/A | 2014-02-14 | FMR LLC | ATHENAHEALTH INC | 4,339,292 | 11.7% | EDGAR |
| SC 13G/A | 2014-02-14 | JANUS CAPITAL MANAGEMENT LLC | ATHENAHEALTH INC | 2,688,958 | 7.2% | EDGAR |
| SC 13G/A | 2014-02-13 | Capital Research Global Investors | ATHENAHEALTH INC | 2,478,099 | 6.7% | EDGAR |
| SC 13G/A | 2014-02-11 | MORGAN STANLEY | ATHENAHEALTH INC | 4,657,096 | 12.5% | EDGAR |
| SC 13G/A | 2014-02-11 | VANGUARD GROUP INC | ATHENAHEALTH INC | 2,199,511 | 5.9% | EDGAR |
| SC 13G/A | 2014-02-07 | PRICE T ROWE ASSOCIATES INC /MD/ | ATHENAHEALTH INC | 2,217,315 | 5.9% | EDGAR |
| SC 13G/A | 2014-02-07 | SANDS CAPITAL MANAGEMENT, LLC | ATHENAHEALTH INC | 4,000,445 | 10.8% | EDGAR |
| SC 13G/A | 2014-01-30 | Artisan Partners Limited Partnership | ATHENAHEALTH INC | 3,166,175 | 8.5% | EDGAR |
| SC 13G/A | 2014-01-28 | BlackRock Inc. | ATHENAHEALTH INC | 2,112,384 | 5.7% | EDGAR |
| SC 13G/A | 2013-04-09 | Artisan Partners Limited Partnership | ATHENAHEALTH INC | 3,639,400 | 10.0% | EDGAR |
| SC 13G/A | 2013-02-14 | FMR LLC | ATHENAHEALTH INC | 4,895,284 | 13.5% | EDGAR |