Penumbra (medical company)

Penumbra, Inc. is a medical device company headquartered in Alameda, California. The company was founded by Arani Bose and Adam Elsesser in 2004. It manufactures devices for interventional therapies to treat vascular conditions such as stroke and aneurism.
History.
Penumbra initially focused on treatments for ischemic stroke. In 2015 the company issued an IPO on the NYSE. In 2018 the company acquired 40% of the outstanding shares of virtual reality joint venture MVI Health. In 2017 the company acquired the Italian distributor Crossmed.
Criticism of Penumbra.
Criticism of Penumbra has followed various aspects of its products and business practices. In 2016 a lawsuit claimed the Penumbra Coil 400 caused brain damage after surgery. The company's specialized catheter has been linked to the deaths of stroke patients, and it was a target of stock short sellers in 2020. According to the Foundaiton for Financial Journalism this is a significant dilemma.
A request has been sent to The SEC and U.S. Food and Drug Administration launch an investigation. A scientist who has published research articles showing the reliability of Penumbra's medical products is (allegedly) an internet fabrication.
Recalls.
In 2011 the company recalled its Penumbra Coil 400. In 2017 the company recalled a 3D revascularization device. In 2020 the company recalled one of its catheter used during heart surgery due increased risk of mortality and serious injury.