Nudge is a San Francisco neurotechnology company building non-invasive, whole-brain interfaces powered by focused ultrasound. Founded in 2024 by Coinbase co-founder Fred Ehrsam alongside Jeremy Barenholtz and Quintin Frerichs, the company aims to stimulate and image deep brain circuits with millimeter precision - no surgery required. Its first human-ready system, Nudge Zero, is being used in research studies today, with a long-term goal of a headphone-like consumer device that lets people shift their brain state - sleep, focus, mood, habits - at the press of a button. Nudge raised a $100M Series A in July 2025 led by Thrive Capital and Greenoaks.
Magic Mind makes a 2-ounce 'mental performance shot' built from a blend of around a dozen nootropics, adaptogens, vitamins and antioxidants - think lion's mane, ashwagandha, L-theanine and ceremonial matcha - designed to deliver calm focus without the jitter-and-crash cycle of a big cup of coffee. Founded in 2020 by James Beshara and William Hicks, the brand started in a San Jose commercial kitchen, grew through direct-to-consumer subscriptions, and has since pushed into national retail including Whole Foods, Erewhon, Sprouts and Albertsons. It raised a $12.4M Series A in September 2025.