The 18 Largest US Funding Rounds of April 2026

Five major U.S. startups raised significant funding rounds in April 2026, highlighting growth in AI, fintech, and healthcare. Sunnyvale-based Scout AI closed a $100 million Series A to advance its AI systems for autonomous defense robotics, bringing total funding to $115.2 million. Founded in 2024 by Colby Adcock and Collin Otis, the company is backed by investors including Align Ventures, Draper Associates, and Booz Allen Ventures. Parallel, a Palo Alto-based AI company, raised $100 million in Series B funding to expand its agent and tool APIs for web-based AI applications. Founded by Parag Agrawal in 2023, the startup has now secured $260 million in total funding, with support from Sequoia Capital, Khosla Ventures, and Kleiner Perkins. Slash, a San Francisco-based fintech platform, announced a $100 million Series C round to enhance its unified financial operations system for businesses. Founded in 2020 by Kevin Bai and Victor Cardenas, the company has raised $160 million overall, with backing from Y Combinator, Khosla Ventures, and Menlo Ventures. New York-based Chapter, a Medicare advisory service for seniors, closed a $100 million Series E round, bringing its total funding to $284 million. Founded in 2013 by Cobi Blumenfeld-Gantz, Corey Metzman, and Vivek Ramaswamy, the company is supported by investors like 8VC, Techstars, and Maverick Ventures. Additionally, San Mateo-based Netomi raised $110 million in Series C funding to develop generative AI solutions for enterprises. Founded by Puneet Mehta in 2015, the company has secured significant backing from investors including Sequoia Capital and Kleiner Perkins.