connect Mobile App for t:slim X2 Insulin Pump Users Impacted by March 2024 Nationwide Recall

Tandem Diabetes Care, Inc. (Nasdaq: TNDM) today announced the planned release of version 2.8.2 of its Apple iOS t:connect mobile app in the United States on August 20, 2024 to correct an issue described in a March 2024 recall that can cause rapid depletion of a user’s t:slim X2 insulin pump battery. This battery depletion can result in the pump shutting down sooner than expected, which some customers have continued to see following the release of version 2.7.1 of the app in March. Tandem encourages all impacted t:slim X2 iOS users to update their mobile app as soon as the new version is available in the Apple App Store.

Under-delivery of insulin because of a pump shutdown can result in hyperglycemia or diabetic ketoacidosis, which can be a life-threatening condition due to high blood sugar and lack of insulin. There have been 143 confirmed adverse events with this recall. Adverse events are defined as a confirmed high blood sugar and/or an event requiring medical intervention. Two hospitalizations and no deaths have been reported.

Information for Impacted t:slim X2 Pump Users (U.S. iOS app users only)

Only the t:connect Mobile App on iOS devices is impacted by this issue.

About v2.8.2 of the t:connect Mobile App

• Includes additional improvements including one designed to help preserve pump battery life when the pump charge falls below 20 percent
• Does not require a t:slim X2 insulin pump software update
• Available in the Apple App Store on August 20, 2024

Tandem will email impacted customers with instructions on how to update their mobile devices when the new version of the app is available. Any customers without a valid email address will receive the information by U.S. mail.

Impacted customers in the U.S. with questions about this recall or how to update their mobile devices can contact the Tandem Diabetes Care Technical Support Team 24 hours a day, 7 days a week at [e-mail] or [phone].

About Tandem Diabetes Care

Tandem Diabetes Care, a global insulin delivery and diabetes technology company, manufactures and sells advanced automated insulin delivery systems that reduce the burden of diabetes management, while creating new possibilities for patients, their loved ones, and healthcare providers. The Company’s pump portfolio features the Tandem Mobi system and the t:slim X2 insulin pump, both of which feature Control-IQ advanced hybrid closed-loop technology. Tandem Diabetes Care is based in San Diego, California. For more information, visit tandemdiabetes.com.