costanoa-ventures
(3)
Jake Sussman
Jake Sussman is the cofounder and CEO of Marble Health, a virtual behavioral health company that embeds inside American schools to get anxious, depressed and overwhelmed kids into group therapy within days rather than months. He helped build Headway into a mental-health unicorn, then walked away to teach fifth-grade English at a Brooklyn charter school, where one overstretched counselor for hundreds of students convinced him the youth side of the system was broken. In 2023 he founded Marble with fellow Headway alum Dan Ross, betting that insurance-funded virtual group therapy, routed through school counselors, could scale care without waitlists. By late 2025 Marble had run more than 15,000 sessions and raised a $15.5M Series A led by Costanoa Ventures.
David Cheng
David Cheng is a General Partner at Costanoa Ventures, an early-stage venture capital firm in Palo Alto focused on data, AI infrastructure, cybersecurity, and fintech. With over a decade of investing experience - including nine years at DCM Ventures, where he became the youngest VP in the firm's 30-year history - Cheng has backed breakout companies including EvenUp (now valued at $2B+) and Brigit (acquired for up to $460M). A Forbes 30 Under 30 honoree and Wharton graduate, he is also co-founder of Coreline Ventures and publishes the 'Earned Intuition' newsletter on Substack, sharing lessons from a decade of early-stage investing.
John Cowgill
John Cowgill is a General Partner at Costanoa Ventures, a Palo Alto-based early-stage venture firm with over $2 billion in assets under management. Promoted to GP in September 2024, he has spent nearly a decade building the firm's cybersecurity and space practices, backing category-defining companies like AppOmni, Cyberhaven, Muon Space, and Kepler Communications. A Northwestern University alumnus and former McKinsey consultant who describes himself as a 'wayward Kentuckian and theater school dropout,' Cowgill invests in Seed and Series A startups across applied AI, AI infrastructure, cybersecurity, space, and B2B fintech—leading with a founder-first philosophy anchored in conviction, humility, and grit.