In May 2026, the US startup ecosystem witnessed several significant funding rounds across various industries. Notable among them is New York-based Nourish, which raised $213.1 million in a Series C round to expand its online nutrition counseling services. In the AI and defense sectors, Providence-based HavocAI secured $197.2 million in a Series A round for its collaborative autonomy software for maritime systems. The clean energy space saw Kearny-based Thea Energy raising $120 million in Series B funding for its fusion power systems. Garner Health, focused on healthcare cost reduction through analytics, raised $320 million in a Series E round. San Francisco’s Corgi Insurance, targeting startup insurance needs, raised a substantial $374.5 million in Series B funding. The AI infrastructure sector also saw significant investments, with Palo Alto’s Deep Infra raising $153.6 million in Series B funding. Meanwhile, SendCutSend in Reno, specializing in custom manufacturing services, raised $110 million in a Series A round. New York’s OpenRouter, offering a marketplace for AI model management, secured $153 million in Series B funding. The biotechnology sector was represented by Cambridge-based CREATE Medicines, which raised $245 million in Series B funding for its CAR therapies. In cybersecurity, San Jose’s Exaforce raised $200 million in a Series B round. The fintech and insurance industry saw New York-based Reserv raising $209.1 million in Series C funding. Portland’s Panthalassa, developing ocean-based renewable energy systems, raised $140 million in Series B funding. In the AI enterprise space, New York’s Vi Labs secured $184.7 million in a venture round. San Francisco’s Farther, a wealth management platform, raised $268 million in Series D funding. The retail technology sector saw New York’s RADAR raising $217 million in Series B funding. Mercury, offering financial services for startups, raised $657.1 million in a Series D round. Boston’s Blitzy, an autonomous software development platform, raised $210.4 million in Series A funding. San Francisco’s Armada, providing edge computing infrastructure, raised $469 million in Series B funding. Exa, a web search API provider, raised $357 million in Series C funding. Atlanta’s Stord, focusing on logistics infrastructure, raised $655 million in a Series F round. San Carlos-based Cowboy Space, developing orbital data centers, raised $325 million in Series B funding. Decart, in San Francisco, focused on AI world models, raised $456 million in a venture round. Aerospace and defense manufacturing saw El Segundo’s Amca raising $376.5 million in Series B funding. San Francisco’s Astranis, developing communications satellites, raised $1 billion in Series E funding. Modal Labs, offering serverless cloud infrastructure, raised $465.5 million in Series C funding. Mind Robotics, in Palo Alto, raised $1 billion in a venture round for AI-powered robotics. San Jose’s Hark, developing personalized AI systems, raised $700 million in Series A funding. Sierra, providing an Agent OS for AI agents, raised $1.6 billion in Series E funding. Cognition, developing autonomous AI software engineers, raised $1.9 billion in Series D funding. Finally, Anduril Industries, based in Costa Mesa, raised $11.4 billion in Series H funding for its defense technology solutions.
What are the largest US startup funding rounds of May 2026?
