Smart ring manufacturer Oura secretly submitted an IPO to the US stock market, with a recent round of financing totaling $11 billion

Smart ring manufacturer Oura Health Oy officially submitted a confidential S-1 registration statement to the U.S. Securities and Exchange Commission on May 21, planning to go public on the U.S. stock market later this year, with Goldman Sachs and JPMorgan serving as the lead underwriters for the IPO.

Ōura was founded in 2013 in Oulu, Finland, by three co-founders Petteri Lahtela, Kari Kivelä, and Markku Koskela, all of whom came from the R&D background of Nokia and global heart rate monitoring pioneer Polar. In October 2025, the company completed an E round of financing led by Fidelity Investments, raising $875 million, with a post-money valuation reaching $11 billion. Previously, the company had raised over $1.5 billion in total financing.

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