Series E closed October 2025, led by Fidelity Management & Research Company.[2]

post-money valuation is not publicly disclosed.

Named investors include Fidelity Management & Research Company, ICONIQ, Whale Rock, Atreides, Dexcom, Lifeline Ventures, DFO Management.[2][3]

Petteri Lahtela, Founder[1]

Kari Kivelä, Founder[1]

Markku Koskela, Founder[1]

Tom Hale, Chief Executive Officer[1][2][4][5][6][7]

Holly Shelton, Chief Product Officer[1][2][4][5][6][7]

Doug Sweeny, Chief Marketing Officer[1][2][4][5][6][7]

Ricky Bloomfield, Chief Medical Officer[1][2][4][5][6][7]

David Shuman, Chair of the Board[1][2][4][5][6][7]

Whoop · whoop.com · Same buyer (health-conscious consumers, athletes), same workflow (continuous physiological monitoring for recovery and readiness), same budget (consumer discretionary wellness spend).[1]

Fitbit (Google) · fitbit.com · Same buyer (consumer wellness), same workflow (activity and sleep tracking), but wrist form factor vs. ring and Google-owned ecosystem.[1]

Apple Watch · apple.com/watch · Same buyer (consumer health and fitness), same workflow (heart rate, sleep, activity tracking), but wrist form factor with screen and broader app platform.[1]

Ultrahuman · ultrahuman.com · Same form factor (smart ring), same buyer (health-conscious consumers), direct competitive overlap.[1]

Circular · circular.xyz · Same form factor (smart ring), same buyer, emerging competitor.[1]

The customer proof is company-sourced only. No independent source in this ledger confirms it.[2]

Ask for one referenceable production customer.

Not a recommendation. The first thing this ledger cannot answer.

Filled in the side panel for invited readers. This card carries sourced facts only.