Firms

Founded

—

Type

Venture capital

Team

No team members on record yet.

Co-investing

Y Combinator

• Helion Energy$425M · 2025
• Helion Energy$1M · 2014-08-14
• Helion Energy$1M · 2014
• Helion Energy$500M · Unknown date

Lightspeed

• Helion Energy$425M · 2025
• Helion$— · 2021-11-05
• Helion Energy$500M · Unknown date

Capricorn Investment Group

• Helion Energy$425M · 2025
• Helion$— · 2021-11-05

Accel

• Lookout$150M · 2014-08-13

Alta Park Capital

• Helion Energy$500M · Unknown date

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Investments

$425M2025	Helion Energy	Lightspeed, Y Combinator, Capricorn Investment Group, Mithril Capital Management
$—2021-11-05	Helion	Lightspeed, Capricorn Investment Group, SoftBank Vision Fund, Mithril Capital Management
$40M2014-09-04	Fractyl	General Catalyst, Bessemer Venture Partners, Domain Associates, Mithril Capital Management
$1M2014-08-14	Helion Energy	Y Combinator, Mithril Capital Management
$150M2014-08-13	Lookout	Khosla Ventures, Wellington Management, The Goldman Sachs Group, Inc., T. Rowe Price, Accel, Mithril Capital Management, Jeff Jordan, David Weiden
$1M2014	Helion Energy	Y Combinator, Mithril Capital Management
$500MUnknown date	Helion Energy	Lightspeed, Anti Fund, Y Combinator, Lux Capital, BoxGroup, Mithril Capital Management, Alta Park Capital

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