# ŌURA

> ŌURA makes the Oura Ring, a titanium smart ring that reads sleep, recovery, heart rate, temperature and activity from the finger. Founded in Oulu, Finland in 2013 and now co-headquartered in San Francisco, it has shipped more than 5.5 million rings, surpassed $500M in 2024 revenue and reached an $11B valuation in its 2025 Series E.

- **Founded:** 2013
- **Headquarters:** Oulu, Finland (co-HQ in San Francisco, USA)
- **Founders:** Petteri Lahtela (Co-founder), Kari Kivelä (Co-founder), Markku Koskela (Co-founder, CTO), Virpi Tuomivaara (Co-founder)
- **Team size:** ~950
- **Products:** Oura Ring 4, Oura App, Oura Membership, Oura for Business
- **Notable:** Surpassed 5.5 million Oura Rings sold (Sep 2025), Doubled revenue two years in a row, crossing $500M in 2024, Reached $11B valuation in Series E (Oct 2025)

## Products & services

- **Oura Ring 4** — Titanium smart ring with Smart Sensing 2.0: 10 LEDs across three wavelengths, 18 measurement pathways, skin temperature thermistor, accelerometer/gyroscope and up to 8-day battery.
- **Oura App** — Mobile app reporting Sleep Score, Readiness Score, Activity Score, cycle insights, stress tracking and AI-driven personalized guidance.
- **Oura Membership** — Subscription that unlocks long-term trends, advanced insights and the on-device Oura Advisor AI.
- **Oura for Business** — Enterprise wellness program used by employers, researchers and pro sports teams.

## Achievements

- Surpassed 5.5 million Oura Rings sold (Sep 2025)
- Doubled revenue two years in a row, crossing $500M in 2024
- Reached $11B valuation in Series E (Oct 2025)
- First smart ring to receive widespread clinical and research validation
- Selected for COVID-19 detection studies with WVU, UCSF and the NBA

## Latest updates

- **2025-10** — Closed $900M Series E led by Fidelity at an $11B valuation.
- **2025-09** — Crossed 5.5M rings sold; announced doubled revenue.
- **2025-11** — CEO Tom Hale forecasts close to $2B in 2026 sales.
- **2024-10** — Launched Oura Ring 4 with Smart Sensing 2.0 and an 8-day battery.

## Links

- Website: https://ouraring.com
- LinkedIn: https://www.linkedin.com/company/oura
- Twitter/X: https://twitter.com/ouraring
- YouTube: https://www.youtube.com/@ouraring
- Instagram: https://www.instagram.com/ouraring
- Facebook: https://facebook.com/ouraring
- TikTok: https://www.tiktok.com/@ouraring

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Profile page: https://yespress.io/ura
Published by YesPress — https://yespress.io
Last updated: 2026-05-23