Lloyd Armbrust is Co-Founder of RonanRx, a Y Combinator-backed (S26) AI-powered personalized medicine platform that tailors GLP-1s, peptides, and treatments to each patient's unique biology.

A graduate of York College Pennsylvania, Lloyd built a 15-year career in media and technology before founding OwnLocal in 2008, a Y Combinator-backed platform that powered digital advertising for over 3,300 local publications and served 1 billion impressions per month.

A 2x YC founder with 3 exits and a track record of raising over $100M, Lloyd is known for bold pivots and mission-driven building, from media tech to domestic PPE manufacturing to AI-driven personalized medicine.

Lloyd previously founded Armbrust American in 2020, building a $50M U.S. medical manufacturing business producing N95 and surgical masks, and co-founded the American Medical Manufacturers Association (AMMA) to advocate for domestic PPE supply chains.

At RonanRx, Lloyd and co-founder Emily Colman are building the complete feedback loop for personalized medicine, combining AI, wearables, labs, and licensed physicians to continuously optimize treatment protocols at scale.