entity Updated 2026-07-23 Tags: Company, Venture-Capital, Hard-Tech

Mithril Capital

Mithril Capital appears in David Kirtley, Founder & CEO of Helion Energy as the lead investor for Helion’s first post-Y Combinator Demo Day round. David Kirtley says Helion spent months doing mutual diligence with investors instead of immediately closing a round after high interest.

In the source, Mithril Capital helps illustrate Hard Tech Fundraising. Helion wanted a smaller group of larger investors willing to understand the physics, engineering, timeline, capital requirements, and risk profile, rather than investors treating fusion like ordinary software traction.

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