Home / Auditor changes / INSULET CORP
Filed 2025-12-19 路 Form 8-K 路 Accession 0001628280-25-058252 large
Price before filing: $292.9 (2025-12-18 close, split/dividend-adjusted)
Market cap at flag: $20.38B (2025-12-19) 路 Latest: $9.78B (2026-10-16)
| Window | PODD | SPY | vs SPY | |
|---|---|---|---|---|
| 30 days | -2.9% | +0.5% | -3.4% | 2026-01-20 |
| 90 days | -21.9% | -2.2% | -19.8% | 2026-03-19 |
| 180 days | -51.0% | +10.2% | -61.2% | 2026-06-17 |
Return from the last close before the filing date to the first close on/after the window end. Pending windows have not fully elapsed. Past performance says nothing certain about the future.
90 days before the flag: 1 insider sold $543K (1 sale); 1 insider bought $300K (1 purchase)
30 days after: none reported.
| Date | Insider | Type | Shares | Price | Value | 10b5-1 plan | Source |
|---|---|---|---|---|---|---|---|
| 2025-12-05 | STONESIFER TIMOTHY C. Director | Purchase | 962 | $311.73 | $300K | no | Form 4 |
| 2025-12-15 | Frederick Wayne A.I. Director | Sale | 1,851 | $293.09 | $543K | no | Form 4 |
| 2025-12-19: red flag filed | |||||||
Open-market purchases and sales (Form 4 codes P and S) by officers, directors and 10% owners, by transaction date, from 2025-09-20 to 2026-01-18. Excludes option exercises, grants, gifts and tax withholding. Amended filings replace the originals; joint filings count once. Foreign private issuers do not file Form 4. Many insider sales are pre-scheduled (10b5-1 plans) and are not by themselves a sign of wrongdoing.
"Item 4.01 Changes in Registrant's Certifying Accountant On December 15, 2025, following careful deliberation and a competitive process, the Audit Committee (the "Committee") of the Board of Directors of Insulet Corporation (the "Company") approved the appointment of PricewaterhouseCoopers LLP ("PwC") as the Company's independent registered public accounting firm, subject to completion of standard client acceptance..."
Quoted from the filing. Source
The company changed its outside auditor (8-K Item 4.01). A dismissal or resignation, especially near an annual report or with reported disagreements, is a warning sign. Changes caused by audit firms merging are usually routine.
Type: dismissed
Disagreements reported: no
Former auditor: Grant Thornton LLP · New auditor: PricewaterhouseCoopers LLP
Read the original filing on SEC.gov →
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Not investment advice. Automated summary; verify against the filing.
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