# Penumbra, Inc.

> Penumbra, Inc. is an Alameda, California medical device company that builds tools to pull life-threatening blood clots out of the body. Founded in 2004 by attorney-turned-CEO Adam Elsesser and neuro-interventional surgeon Dr. Arani Bose, it pioneered aspiration-based mechanical thrombectomy for acute ischemic stroke and expanded into peripheral, venous, and pulmonary clot removal with its Indigo and Lightning Flash systems. The company also runs an Immersive Healthcare arm using virtual reality (the REAL System) for rehabilitation and wellness. Public on the NYSE since 2015 under ticker PEN, Penumbra posted $1.4 billion in 2025 revenue and agreed in January 2026 to be acquired by Boston Scientific in a roughly $14.5 billion deal.

- **Founded:** 2004
- **Headquarters:** Alameda, California, United States
- **Founders:** Adam Elsesser (Co-Founder, Chairman, President & CEO), Arani Bose (Co-Founder, Chief Innovator & Director (neuro-interventional surgeon))
- **Team size:** ~4,500 employees
- **Products:** Penumbra System (Neuro), Indigo System with Lightning, Lightning Flash 3.0, THUNDERBOLT, Embolization Coils & Detachable Coils
- **Notable:** Pioneered aspiration-based mechanical thrombectomy for acute ischemic stroke., Completed one of medtech's largest IPOs of 2015, listing on the NYSE as PEN., Built the only computer-assisted (CAVT) mechanical thrombectomy systems cleared in the U.S.

## Products & services

- **Penumbra System (Neuro)** — Aspiration-based reperfusion catheters and separators for revascularization in acute ischemic stroke caused by large vessel occlusion.
- **Indigo System with Lightning** — Computer Assisted Vacuum Thrombectomy (CAVT) platform for removing clots from peripheral arteries and veins using intelligent aspiration.
- **Lightning Flash 3.0** — Latest-generation CAVT system engineered for rapid removal of pulmonary and venous thrombus, with an algorithm that distinguishes thrombus from flowing blood.
- **THUNDERBOLT** — Mechanical thrombectomy system in Penumbra's neurovascular and vascular portfolio.
- **Embolization Coils & Detachable Coils** — Neurovascular coil systems used to treat aneurysms and embolize vessels.
- **Access Catheters & Aspiration Pump (ENGINE)** — Vascular and neurovascular access catheters and the aspiration source that powers thrombectomy.
- **REAL Immersive System** — Virtual reality healthcare platform - REAL y-Series for clinical rehabilitation and REAL i-Series for wellness and mental health.

## Achievements

- Pioneered aspiration-based mechanical thrombectomy for acute ischemic stroke.
- Completed one of medtech's largest IPOs of 2015, listing on the NYSE as PEN.
- Built the only computer-assisted (CAVT) mechanical thrombectomy systems cleared in the U.S.
- Surpassed $1.4 billion in annual revenue in 2025.
- Agreed to a ~$14.5 billion acquisition by Boston Scientific in January 2026.
- Expanded medtech into virtual reality rehabilitation with the REAL Immersive System.

## Latest updates

- **2026-01** — Boston Scientific announced a definitive agreement to acquire Penumbra for ~$14.5 billion ($374/share), expected to close in 2026.
- **2026-01** — Reported preliminary Q4 2025 revenue of $383-385 million and full-year 2025 revenue of ~$1.40 billion, up ~17.5%.
- **2025** — Launched Lightning Flash 3.0, the next evolution of its Computer Assisted Vacuum Thrombectomy technology for pulmonary and venous thrombus.

## Links

- Website: https://www.penumbrainc.com
- LinkedIn: https://www.linkedin.com/company/penumbra-inc
- Twitter/X: https://twitter.com/penumbrainc
- YouTube: https://www.youtube.com/user/PenumbraInc
- Facebook: https://facebook.com/penumbraincmedtech/

---

Profile page: https://yespress.io/penumbra-inc
Published by YesPress — https://yespress.io
Last updated: 2026-06-20