[5] It manufactures devices for interventional therapies to treat vascular conditions such as stroke and aneurysm.
[11] In 2018 the company acquired 40% of the outstanding shares of virtual reality joint venture MVI Health.
[14] 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.
[19] A scientist who has published research articles showing the reliability of Penumbra's medical products is (allegedly) an internet fabrication.
[22] In 2020 the company recalled one of its catheter used during heart surgery due to increased risk of mortality and serious injury.