John A. Sobrato, founder of the Sobrato Organization, is one of Silicon Valley’s most influential real estate developers, building a multibillion-dollar portfolio that houses many of the world’s leading technology companies. After selling one of the Bay Area’s earliest tech office parks in the 1970s, he expanded aggressively into commercial and multifamily properties across the region, creating a dominant privately held enterprise now managed alongside the second generation. A dedicated philanthropist, Sobrato has devoted much of his wealth to education, housing, and community development, with the family pledging to give away the majority of its net worth, solidifying his impact on both the business and social fabric of Northern California.