# Boston Scientific invests $1.5B for 34% stake in MiRus

Boston Scientific acquired a 34% equity stake in MiRus for $1.5 billion, with an option to acquire the rest of its TAVR business for up to $3 billion in additional payments.

- Type: Acquisition
- Announced: 2026-05-18
- Where: United States
- Value: $1.50B
- Status: announced
- Products: transcatheter aortic valve replacement system, SIEGEL valve
- Sectors: [Medical Devices](https://endata.com/sectors/medical-devices.md)

## Companies

- [Boston Scientific](https://endata.com/companies/15966.md) (acquirer)
- [MiRus](https://endata.com/companies/40216.md) (target)

## Sources

- [medtechdive.com](https://www.medtechdive.com/news/boston-scientific-buys-15b-stake-in-tavr-developer-mirus/820492/), 2026-05-18: "We believe the distinctive design and impressive early clinical results of the SIEGEL valve may set it apart from currently available technology"

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.