AthenaHealth Files for Secondary Offering

AthenaHealth Inc. (Nasdaq: ATHN), a Watertown, Mass.-based provider of online business services for physician practices, has filed for a secondary public offering of around 3.11 million common shares. Selling shareholders include Oak Investment Partners (1.1m) and Cardinal Partners (473k). Both firms would retain ownership stakes following the sale. Fellow venture backers Venrock and DFJ are not planning to sell shares via this offering.