Jonathan Greenfield vs Jeff Seibert compared for founders deciding who to pitch. Stage focus, check size, and sector fit compared side by side.
Jonathan Greenfield is a individual/angel based in Sunnyvale, CA, United States. Jeff Seibert is a individual/angel based in San Francisco, California, United States across 54 portfolio companies.
Investors like Jonathan Greenfield · Investors like Jeff Seibert · Jonathan Greenfield co-investors · Full investor directory