Runtime Ventures
Runtime Ventures is an early-stage venture capital firm based in Arlington, Virginia, with connections to Austin, Texas. Founded in 2023, the firm specializes in pre-seed and seed investments in cybersecurity startups, supported by a $32 million debut fund. Runtime Ventures focuses on ambitious founders with strong technical and business skills, aiming to foster innovative companies that develop secure enterprise solutions. Co-founded by David Endler and Michael Sutton, Runtime Ventures leverages extensive experience in the cybersecurity sector. The firm actively engages with its portfolio co
Investing activity
Runtime Ventures appears in 2 AI deals tracked by the AI Lounge deals desk, rounds totalling $20M. The rounds are mostly Seed, with a median round size of $20M. The most recent are Bloom Security (Seed, $20M, Jul 2026) and AiStrike (Seed, $7M, Jan 2026).
Runtime Ventures most often invests alongside Glilot Capital, Ten Eleven Ventures, Okta Ventures and Blumberg Capital, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about Runtime Ventures
What AI companies has Runtime Ventures invested in?
Runtime Ventures's AI investments include Bloom Security and AiStrike. The 2 rounds on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Runtime Ventures based?
Runtime Ventures is based in England, United Kingdom.
What stage does Runtime Ventures invest at?
In the rounds tracked on AI Lounge, Runtime Ventures has invested at Seed, with a median round of $20M.
Who does Runtime Ventures co-invest with?
Runtime Ventures's most frequent co-investors on AI Lounge are Glilot Capital (1 deal), Ten Eleven Ventures (1 deal), Okta Ventures (1 deal), Blumberg Capital (1 deal) and Oregon Venture Fund (1 deal).
How can founders reach Runtime Ventures?
Founders on AI Lounge can see Runtime Ventures's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add Runtime Ventures to their Investor Pipeline to track the conversation.