D ouglas Leone is an Italian-born American billionaire and a towering figure in the world of venture capital. He was a longtime partner at Sequoia Capital, one of Silicon Valley's most storied and successful venture capital firms. He joined Sequoia in 1988 and, alongside his partner Michael Moritz, he took over the leadership of the firm from its legendary founder, Don Valentine. He served as the global managing partner of the firm for many years, overseeing its transformation into a global powerhouse.

During his tenure, Leone was instrumental in guiding Sequoia's investments in a string of legendary technology companies, including Google, YouTube, and Airbnb. He earned a reputation as a tough, disciplined, and highly effective board member who played a hands-on role in helping his portfolio companies scale into global giants. After decades of leading the firm through some of the most transformative periods in technology history, he stepped back from his leadership role in 2022 but remains a partner at the firm he helped build into the gold standard for venture capital.