X0304 4 2012-03-01 0 0001131096 ATHENAHEALTH INC ATHN 0001357695 Hull Brandon H C/O CARDINAL PARTNERS 230 NASSAU STREET PRINCETON NJ 08542 1 0 0 0 Common Stock 2012-03-01 4 S 0 2000 70.85 D 8920 D The sales reported on this Form 4 were made pursuant to a written trading plan adopted by the Reporting Person on February 28, 2011, in accordance with Rule 10b5-1. This price represents the weighted average of sales ranging from $70.68 to $71.01. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price. /s/ Daniel H. Orenstein Attorney-in-Fact 2012-03-01