David Cowan is a prominent venture capitalist and managing partner at Greylock Partners, a leading early-stage venture capital firm based in the San Francisco Bay Area. With a career spanning over two decades in the industry, Cowan specializes in investments within enterprise software, cybersecurity, and related technologies. He joined Greylock in 2002 after completing his MBA and has since played a pivotal role in identifying and funding transformative companies that have reshaped their sectors. His investment philosophy emphasizes backing innovative founders solving complex problems in security and productivity, contributing significantly to Silicon Valley's tech ecosystem.

Cowan's notable investments include early stakes in cybersecurity powerhouse Palo Alto Networks, where he backed founder Nir Zuk, as well as enterprise software leaders like Workday and ServiceNow. These successes have not only generated substantial returns for Greylock but also positioned Cowan as a key influencer in the tech investment landscape. Prior to Greylock, he worked in product management at Cisco Systems and held roles in strategy consulting, gaining foundational experience in technology and business operations.

Beyond his investment activities, Cowan is recognized for his mentorship of entrepreneurs and thought leadership on emerging tech trends, particularly in cybersecurity amid rising global threats. He maintains a low public profile outside professional circles, focusing on long-term value creation rather than media presence. As of recent years, he continues to lead Greylock's enterprise investments from the firm's Menlo Park office.