# Ann Miura-Ko

> Ann Miura-Ko is co-founding partner at Floodgate, the seed-stage VC firm behind Lyft, Twitch, Twitter, and Okta. A NASA rocket scientist's daughter who went from painfully shy piano prodigy to national debate champion to Forbes' 'most powerful woman in startups,' she holds a PhD in mathematical modeling of cybersecurity from Stanford and has spent 15+ years betting on founders before anyone else believes in them. She co-founded AllRaise to diversify venture capital, teaches entrepreneurship at Stanford, and invests in roughly 3-5 companies per year with a philosophy built on secrets, stories, and world-class effort.

- **Role:** Co-Founding Partner at Floodgate
- **Organizations:** Floodgate, AllRaise, Founders for Change, Stanford University - Mayfield Fellows Program, Yale Corporation (2019-2025)
- **Nationality:** American
- **Education:** BS in Electrical Engineering, Yale University, PhD in Mathematical Modeling of Cybersecurity, Stanford University
- **Known for:** Co-founded Floodgate, one of Silicon Valley's preeminent seed-stage VC firms, Early investor in Lyft (10,000x return at IPO), Twitch, Twitter, Okta, TaskRabbit, and Refinery29, Repeat member of the Forbes Midas List

## Career timeline

- **1998** — Graduated Yale with BS in Electrical Engineering
- **2001-2003** — Analyst at Charles River Ventures, Boston
- **2003** — Joined McKinsey & Company as consultant
- **2008** — Co-founded Floodgate with Mike Maples Jr. during the financial crisis
- **2010** — Led early investment in Lyft (then Zimride); joined Lyft board
- **2011** — Early investment in Twitch (then Justin.tv)
- **2013** — Began lecturing at Stanford Technology Ventures Program
- **2017** — Named Forbes 'Most Powerful Woman in Startups'; placed on Midas List
- **2018** — Co-founded AllRaise to increase diversity among venture funders and founders
- **2019** — Elected to Yale Corporation Board of Trustees as alumni fellow
- **2023** — Departed Lyft board after 13 years
- **2025** — Floodgate portfolio company SmarterDX achieved $1B+ exit; departed Yale Corporation

## Achievements

- Co-founded Floodgate, one of Silicon Valley's preeminent seed-stage VC firms
- Early investor in Lyft (10,000x return at IPO), Twitch, Twitter, Okta, TaskRabbit, and Refinery29
- Repeat member of the Forbes Midas List
- Listed among New York Times Top 20 Venture Capitalists Worldwide
- Named 'Most Powerful Woman in Startups' by Forbes
- National Debate Tournament of Champions - First Place winner
- Co-founded AllRaise, helping diversify venture capital funding
- Co-director of Stanford's prestigious Mayfield Fellows Program
- Yale Corporation Board of Trustees member (2019-2025)
- Competed in RoboCup Competition in Paris as Yale student
- Her father is a NASA rocket scientist who emigrated from Japan

## Latest updates

- **2025-03** — Floodgate portfolio company SmarterDX (AI-powered healthcare billing) achieved $1B+ exit
- **2025-01** — Continued early-stage AI investments including Counsel Health, Hebbia, and ReadyOn
- **2024-06** — Named again to the Forbes Midas List of top venture capitalists
- **2024-03** — Featured in CSQ profile 'Chasing the Crescendo: Ann Miura-Ko's Transformative Journey'

## Links

- Website: https://floodgate.com/team/ann-miura-ko
- LinkedIn: https://www.linkedin.com/in/amiura/
- Twitter/X: https://twitter.com/annimaniac

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Profile page: https://yespress.io/ann-miura-ko
Published by YesPress — https://yespress.io
Last updated: 2026-05-05