Oura
OU
Oura makes the Oura Ring, a smart ring that tracks sleep, activity, heart rate, and skin temperature, with insights delivered through a mobile app. The app provides daily metrics such as sleep and readiness scores and trends over time. Oura sells the ring direct to consumers and offers a subscription membership for extended analytics.
Founded by Petteri Lahtela (Co-founder (former CEO)), Kari Kivela (Co-founder), Markku Koskela (Co-founder)
Blended valuation$17.3B$12.8B secondary
Valuation history
Weekly blended valuation with priced funding rounds marked on the timeline.
$18.5B
blended valuationfunding round
May 31, 2021$1.4BOct 5, 2026
All rounds
8 funding rounds, newest first.
| Round | Announced | Raised | Post-money |
|---|---|---|---|
| Series E | Oct 14, 2025 | $900M | $11B |
| Series D | Nov 19, 2024 | $200M | $5.2B |
| Growth | Apr 5, 2022 | — | $2.6B |
| Series C | May 4, 2021 | $100M | $800M |
| Series B | Mar 17, 2020 | $28M | — |
Join Legion to view all 8 rounds.Sign in to Legion
Investors
21 investors across all rounds.
- LVLifeline Ventures
- FIFidelity
- FOForerunner
- GRGradient
- TCTCG
- JVJ2 Ventures
- DMDFO Management
- DEDexCom
- EPElysian Park Ventures
- HRHarpreet Rai
Only Legion members can view the full investor roster. Sign in to Legion
Secondary market activity
Recent buy and sell interest for Oura shares on the secondary market.
| Kind | Implied valuation | Price / share | Date |
|---|---|---|---|
| $13.3B | $25.69 | Sep 29, 2026 | |
| $7.8B | $38.11 | Jun 23, 2026 | |
| $11B | — | Jun 1, 2025 |
Invest in the private markets on Legion
Registered users see full trading activity, every investor, rankings, and live deals.
Data as of Oct 15, 2026. Valuations are estimates blended from primary and secondary-market signals — not investment advice.