Greg is co-founder of Spacebar, a San Francisco based company that streams live audio performance to mobile devices.
Previously, Greg built and led the investments, grants and legal teams at the launch of Google.org and the Google Foundation, and chaired its investment committees, through 2009. He led executive production of "The Final Inch", a Google.org film documenting current polio eradication efforts in India and Pakistan that was nominated for a 2009 Academy Award for Best Documentary (Short Subject), and that won the 2009 Pare Lorentz Award from the International Documentary Association. Prior to Google, Greg worked with start-ups, including as a partner with Silicon Valley's Gunderson Dettmer law firm and as a co-founder of Cometa Networks in 2001, one of the earliest 802.11b wifi deployment companies.
He is an active TEDster, Curator of TEDxAlcatraz, an angel investor in the Silicon Valley, and mentor with several social entrepreneurship and sustainability programs.