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See every TNDM insider filing — free account, no card.
Free accountTANDEM DIABETES CARE INC (TNDM) has 9 SEC Form 4 insider filings on record in the last 90 days. Most recent filing: Oct. 29, 2026.
Open-market value, last 90 days
No open-market buys or sales in this period.
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Oct 29, 2026 SEC filing | TWOMEY CHRISTOPHER J Director | Cashless exercise | $255 | — |
| Oct 19, 2026 SEC filing | Kyrillos Jean-Claude EVP & Chief Operating Officer | Vest & sell-to-cover | +1,711 sh | — |
| Aug 18, 2026 SEC filing | Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER | Vest & sell-to-cover | +2,641 sh | — |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.