Tandem Diabetes Care(TNDM) - 2025 Q1 - Quarterly Results

Exhibit 99.1 Media Contact: 858-366-6900 media@tandemdiabetes.com Investor Contact: 858-366-6900 IR@tandemdiabetes.com FOR IMMEDIATE RELEASE Tandem Diabetes Care Announces First Quarter 2025 Financial Results • Gross profit: GAAP gross profit was $118.4 million, compared to$94.7 million. GAAP gross margin was 51%, compared to 49%. Non-GAAP gross profit for the first quarter of 2024 was $95.8 million and non-GAAP gross margin was 50%. (1) (1) San Diego, April 30, 2025 - Tandem Diabetes Care, Inc. (Nasdaq: T ...