tl;dr: Oxide Computer raised a $445M Series D led by Eclipse, with participation from existing investors (USIT, Riot, Jane Street) and new backers Atreides Management and strategic investor AMD. The company recently became profitable (paying income tax on operations) but needs the capital to fund inventory and manufacturing for a backlog that significantly exceeds supply. The round builds on their Series C goal of de-risking the company to ensure longevity and independence while scaling production.