nnTandem Diabetes Care®, Inc., a medical device company and manufacturer of the only touchscreen insulin pumps available in the United States, today announced U.S. Food and Drug Administration (FDA) approval of the t:slim X2™ Insulin Pump with Basal-IQ™ technology, a predictive low glucose suspend (PLGS) feature designed to help reduce the frequency and duration of low glucose events (hypoglycemia).nnThis is the first automated insulin delivery system approved for use by children as young as 6 years old, and the first insulin pump designated as compatible with integrated continuous glucose monitoring (iCGM) devices. The Company plans to launch its new product with Dexcom G6® continuous glucose monitoring (CGM) integration, which requires no fingersticks for calibration or diabetes treatment decisions and was the first CGM device to receive the iCGM designation from the FDA earlier this year. nnTandem expects the t:slim X2 Pump with Basal-IQ technology to be available in August 2018, and all in-warranty t:slim X2 users in the United States will have the option to add the new feature free of charge via remote software update.nnTandem’s Basal-IQ algorithm is designed to look 30 minutes into the future to predict where glucose levels are heading. The device suspends insulin delivery when low glucose is predicted, then automatically resumes insulin delivery once glucose levels begin to rise. Use of the t:slim X2 Pump with Basal-IQ technology in the pivotal clinical study demonstrated a 31 percent relative reduction in time spent below 70 mg/dL, with no rebound hyperglycemia compared to a CGM-enabled insulin pump without the feature.nn“Hypoglycemia can be a significant source of fear for people who use insulin and is a major cause of hospitalizations for people with diabetes,” said Dr. Greg Forlenza, Assistant Professor of Pediatrics at the Barbara Davis Center, and one of the principal investigators in the PROLOG (PLGS for Reduction of Low Glucose) trial. “Basal-IQ technology proved very effective in the clinical trial at reducing time spent in hypoglycemia and improving time in range. The system was also simple to learn and use, so the training burden was minimal for the clinics and study participants compared to other automated insulin delivery systems.”nn

nn“The t:slim X2 Pump with Basal-IQ technology was designed to predict and help prevent time spent low using best-in-class CGM technology,” said Kim Blickenstaff, president and CEO of Tandem Diabetes Care. “As the first company to launch a touchscreen insulin pump capable of remote feature updates, and now the first to have a pump approved with iCGM compatibility, we are delivering new innovation to our customers at a pace that is unprecedented in our industry, furthering our mission to help improve the lives of people with diabetes.”nnBenefits of the New Basal-IQ Predictive Low Glucose Suspend feature:nnPredicts and helps prevent lows – Using CGM values, the Basal-IQ feature looks ahead 30 minutes and suspends insulin when glucose is predicted to drop below 80 mg/dL or if glucose is currently below 70 mg/dL and falling. The system resumes insulin once glucose values start to rise.nnNo fingersticks – With Dexcom G6 CGM integration, the Basal-IQ feature works with no fingersticks required for mealtime dosing or calibration. Other benefits of the Dexcom G6 CGM include an extended 10-day wear, acetaminophen blocking, and the ability to share real-time CGM data with up to 5 followers.nnWorks silently in the background – No additional alerts or alarms are required to use Basal-IQ technology compared to standard CGM-enabled pumps. Users can choose whether or not to receive alerts when insulin is suspended and resumed based on their personal preference.nnNo complicated modes to manage – The Basal-IQ feature has no complicated settings to manage and operates without constant input or interaction. The user only has to decide whether they want the feature on or off.nnStandard features of the t:slim X2 Insulin Pump:nnSmall and discreet – The t:slim X2 Pump is up to 38 percent smaller than other pumps, yet can hold up to 300-units of insulin.nnCan be used with or without the Basal-IQ feature or CGM – When advanced features are turned off, the t:slim X2 Pump removes the CGM chart from the screen and puts the Bolus and Option buttons front and center for easy access.nn#1-rated customer support – Tandem’s California-based customer support has consistently ranked number one by pump users in independent patient surveys since 2012.n

For additional product and safety information, or to begin the order process, visit www.tandemdiabetes.com/tslimX2nor call (877) 801-6901, Monday – Friday between 6am and 5pm Pacific Time

nFree Demo App – Basal-IQ Technology Coming SoonnnTandem’s free t:simulator™ App will be updated in early July to let you experience the touchscreen interface of the t:slim X2 Pump with Basal-IQ technology directly on your mobile device. For more information and to download the app, visit http://www.tandemdiabetes.com/tsimulator.nnFree Software Update for Current t:slim X2 Pump UsersnnAll in-warranty t:slim X2 Pump users in the United States have the option to add the Basal-IQ feature free of charge via a software update using a personal computer. The Basal-IQ feature update will require a user to secure a new prescription from his or her healthcare provider and complete a 45-minute online training module. Internet and computer access are required for pump updates. Tandem expects the Basal-IQ software update to be available for current t:slim X2 Pump users in August 2018. Information about the requirements and update process is available at www.tandemdiabetes.com/X2update.nnBasal-IQ Technology – Clinical OutcomesnnIn February 2018, the Company reported results from the six-week PROLOG (PLGS for Reduction of Low Glucose) pivotal trial, a randomized crossover study comparing two three-week periods of at-home insulin pump use, one period using the t:slim X2 Pump with Basal-IQ technology, and another period using a standard CGM-integrated t:slim X2 Pump without automated insulin suspension. The study included 103 participants with type 1 diabetes age 6 to 72 at four research centers across the United States. Use of the system with Basal-IQ technology reduced the number of sensor glucose readings below 70 mg/dL by 31 percent compared to the control period using a standard CGM-integrated t:slim X2 Pump without automated insulin suspension. Importantly, this marked reduction of time spent in low glucose was accomplished without any increase in the rate of hyperglycemia and participants overwhelmingly described the system as simple to learn and use.nnInsulin Pump Use and DiabetesnnDiabetes is a chronic, life-threatening disease that affects more than 29 million people in the United States, or nearly 1 in 10 Americans. Tandem estimates that more than three million people in the United States require daily administration of insulin and are candidates for pump therapy. More than 425,000 Americans with type 1 diabetes use an insulin pump, or approximately 27 percent of the type 1 diabetes population. In addition, approximately 125,000 Americans with type 2 diabetes use an insulin pump, a small fraction of the type 2 diabetes population.nnAbout Tandem Diabetes Care, Inc.nnTandem Diabetes Care, Inc. (www.tandemdiabetes.com) is a medical device company dedicated to improving the lives of people with diabetes through relentless innovation and revolutionary customer experience. The Company takes an innovative, user-centric approach to the design, development and commercialization of products for people with diabetes who use insulin. Tandem manufactures and sells the t:slim X2™ Insulin Pump with Basal-IQ™ technology. The t:slim X2 Pump is capable of remote feature updates using a personal computer, and is the only automated insulin delivery device approved for children as young as 6 years old. Tandem is based in San Diego, California.nnTandem Diabetes Care is a registered trademark, and t:slim X2, Basal-IQ and t:simulator are trademarks of Tandem Diabetes Care, Inc. Dexcom and Dexcom G6 are registered trademarks of Dexcom, Inc. All other trademarks are the property of their respective owners.nn