Venture Partner 
Greylock Partners

Waltham, Massachusetts


Tom is a venture partner with Greylock Partners and serves as a BOD member or advisor to several technology and software companies.  Currently he serves on the boards of early stage companies Apptio, Rally Development and Troux Systems.  He is also Chairman of Citrix Systems (CTXS) a leading data center infrastructure company.

From 2004 to 2009 Tom was a partner with Greylock a leading venture capital firm.  Previously he had served as President of Rational Software until its acquisition by IBM in 2003 and as CEO of Avatar Technologies and Pacific Data Products.  Before Avatar Tom held positions as a financial officer in public and private companies as well as public accounting.

Tom graduated from Stonehill with a B.S.B.A. degree in accounting in 1972.