Helion, a 12-year-old company based in Everett

Helion, a 12-year-old company based in Everett, WA, that is developing a fusion energy generator designed to produce electricity through nuclear fusion, raised a $425 million Series F round at a $5.2 billion valuation. Investors included Lightspeed Venture Partners, SoftBank, and an unnamed university endowment as well as previous investors Sam Altman, Capricorn Investment Group, Mithril Capital, Dustin Moskovitz, and Nucor. TechCrunch has more here.