Insulet Corporation Auditor Change from Grant Thornton to PwC

Insulet Corporation filed an 8-K on December 19, 2025, reporting a change in its independent registered public accounting firm. The company's Audit Committee approved the appointment of PricewaterhouseCoopers LLP (PwC) as the new auditor for the fiscal year ending December 31, 2026, and dismissed Grant Thornton LLP. Grant Thornton will continue to audit the company's financial statements for the year ending December 31, 2025. The filing states that Grant Thornton's reports for 2023 and 2024 contained no adverse opinions or qualifications, and there were no disagreements or reportable events between the company and Grant Thornton during those periods and the subsequent interim period. The company previously disclosed a material weakness in IT general controls for non-North American financial reporting systems, which was remediated as of the 2024 annual report. Grant Thornton provided a letter agreeing with the statements in the 8-K filing.