Oura's IPO filing reveals details of its health foundation models

Smart-ring maker Oura's filing with the US Securities and Exchange Commission describes Oura Advisor, health foundation models and a women's-health language model, offering a rare look at how a wearables company plans to build artificial intelligence on top of the data its devices collect.

The company reported 5.0 million paid members as of June 30, 2026, roughly 85 per cent twelve-month retention, and a median wear time of 23 hours a day. These are the company's own filing metrics and have not been independently verified.

The filing draws a line that matters: wellness features and regulated clinical use must be distinguished. A ring that offers sleep and activity guidance operates under different rules than software that diagnoses or treats disease, and the company's models sit mostly on the wellness side for now.

The Finnish company, which sells its rings in the United States and other markets, is seeking to go public as wearable health devices move from niche gadgets to mainstream products.

For investors, the filing's AI disclosures signal where Oura sees its future value: not in the ring itself, but in the models trained on the continuous stream of data from millions of wearers.