Apollo

Apollo.io operates a go-to-market platform that combines a B2B contact database of more than 270 million verified contacts with sales intelligence, engagement, deal execution, and forecasting, increasingly orchestrated through AI agents. Founded in 2015 by CEO Tim Zheng, the company is headquartered in San Francisco and is remote-first, serving more than 500,000 companies from startups to enterprises including Qualtrics, Customer.io, and Census. Apollo raised a $100M Series D in August 2023 led by Bain Capital Ventures at a $1.6B valuation, with Sequoia Capital, Tribe Capital, and Nexus Venture Partners, bringing total funding to roughly $251M.