ŌURA (Oura Health Oy)
Category: AI in Healthcare
Finnish health technology company behind the Oura Ring, a smart ring that tracks sleep, activity, heart health, stress, and women's health using biometric sensors and AI-powered insights. ŌURA (Oura Health Oy) was founded in 2013. The company is led by Tom Hale. Based in San Francisco, California, United States (HQ); Oulu and Helsinki, Finland; San Diego, United States. Team size: 500+. Total funding raised: $1.5B+. Latest round: Series E. Key investors include Fidelity Management & Research Company, ICONIQ Capital, Whale Rock, Atreides Capital, Dexcom, The Chernin Group, Elysian Park Ventures, Temasek, JAZZ Venture Partners, Eisai, Forerunner Ventures, Gradient Ventures (Google).
- Founded
- 2013
- Headquarters
- San Francisco, California, United States (HQ); Oulu and Helsinki, Finland; San Diego, United States
- Team size
- 500+
- Total funding
- $1.5B+
Value proposition
A discreet, comfortable smart ring worn 24/7 that tracks 50+ biometric health metrics (sleep, heart rate, HRV, temperature, activity, stress, menstrual cycle) and delivers personalized AI-powered health insights through the Oura app and Oura Advisor chatbot.
Products and solutions
Oura Ring 5 (smart ring), Oura Ring 4, Oura Ring 4 Ceramic, Oura Membership (subscription), Oura Advisor (AI chatbot), Oura for Business/Organizations (enterprise wellness), Women's Health AI Model (proprietary LLM for reproductive health guidance)
Unique value
The world's most accurate and comprehensive smart ring with a proprietary AI model for personalized women's health guidance, backed by clinical research and a rapidly growing ecosystem of health partnerships.
Target customer
Health-conscious consumers (B2C); enterprises and organizations for employee wellness (B2B); healthcare providers and pharma companies (B2B); military and government agencies; professional sports teams and athletes.
Industries served
Consumer Health & Wellness, Enterprise Wellness, Healthcare, Pharmaceuticals (GLP-1), Defense, Professional Sports, Academic Research
Technology advantage
Proprietary infrared LED sensor technology; custom large language model for women's health; strong patent portfolio (ITC exclusion orders against competitors); 5.5M+ rings sold by Sept 2025; $1B+ estimated ARR; confidential IPO filing in May 2026; strategic partnerships with Eli Lilly, Dexcom, and major sports/defense organizations.
How they differentiate
Oura differentiates through: (1) form factor — a comfortable, waterproof ring worn 24/7 vs. wrist-based wearables; (2) sensor density — 12+ LED sensors capturing high-frequency biometric data; (3) proprietary AI — first custom LLM for women's health built on clinician-reviewed knowledge; (4) strong IP portfolio with ITC patent victories blocking competitors from US market; (5) enterprise/government contracts with US military, NASA, and major sports organizations; (6) deep pharma partnerships (Eli Lilly/LillyDirect for GLP-1 patients).
Main competitors
Samsung Galaxy Ring, Apple Watch (indirect), Whoop (wristband), Ultrahuman, RingConn, Amazfit (Zepp Health)
Key partnerships
Eli Lilly/LillyDirect (GLP-1 patient support), Dexcom (glucose biosensing integration), Gucci (co-branded ring), Equinox (Rest & Recovery Kit), Fullscript (wearable data into clinical workflows), US Department of Defense ($96M contract), RingConn (patent licensing)
Notable customers
US Air Force, US Navy, US Army, NASA, Red Bull Racing, NASCAR, UFC, WNBA, USA Surfing, Thrive Global, Noom, Equinox
Major milestones
2013: Company founded in Oulu, Finland, 2015: $2.3M seed round, 2016: Kickstarter campaign for Gen1 ring, 2017: Launch at Slush tech conference, 2020: $28M Series B from Google's Gradient Ventures & Square, NBA COVID-19 partnership, 2021: $100M Series C, Gen3 ring launch, 2022: Tom Hale appointed CEO, Oura for Business launched, 2024: $200M Series D at $5.2B valuation
Growth metrics
5.5M+ rings sold (Sept 2025); ~$1B estimated ARR (2025); 2.5M rings sold (Dec 2024); 900+ employees; $11B valuation (Oct 2025)
Market positioning
Market leader in the smart ring category with >75% market share. Valued at $11B after Series E. Positioned as a premium health wearable bridging consumer wellness and clinical-grade health monitoring. Expanding into metabolic health (GLP-1 tracking), women's health AI, and enterprise wellness.
Geographic focus
Global, with strong presence in North America, Europe, and expanding in Asia
Patents and IP
Strong patent portfolio covering smart ring hardware, sensor technology, and health monitoring algorithms. Won ITC exclusion orders banning Ultrahuman and RingConn from US market. Successfully defended core smart ring patent against Samsung challenge at USPTO. Filed ITC actions against Samsung, Reebok, Zepp Health, and Nexxbase for patent infringement.
About Tom Hale
Ex-President of Momentive (took company public in 2018); COO at HomeAway; CPO at Linden Lab; Executive roles at Macromedia and Adobe. BA from Harvard University. Board member of Cars.com, RocketReach, and NoiseAware.
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Official website: https://ouraring.com
