SAN FRANCISCO--(BUSINESS WIRE)--Secfi, the leader in equity planning, financing and wealth management for start-up builders, has announced it is joining the Open Cap Table Coalition, a cross-industry group that is collaborating to improve the interoperability, transparency, and portability of startup capitalization data. The working group includes leaders across the startup community, including venture capital firms, software providers, major law firms that advise emerging companies, and other