TNDM SEC Form 4 filings
Tandem Diabetes Care Inc Latest Insider Trading Activity
Our insider trading activity tracker for Tandem Diabetes Care Inc shows 11 total open-market insider transactions for TNDM over the past 1,592 days. The most recent displayed transaction was on August 11, 2025, when Sheridan John F (Tandem Diabetes Care Inc PRESIDENT & CEO) reported a purchase of 10,000 shares at $10.23 per share. This page shows up to the 10 most recent SEC Form 4 filing records on a 6-hour delay. Sign up for real-time updates and access to 20 years of historic insider trading data.
Insider Trading For TNDM Charted on Daily Candles. Scroll left or zoom out to load earlier candles (up to 2 years).
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. TNDM | 2025-08-11 | 2025-08-11 | Tandem Diabetes Care Inc | Sheridan John F | PRESIDENT & CEO | Buy | 1 | 10,000 | $10.23 | $102,300.00 | 9.40% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. TNDM | 2025-03-11 | 2025-03-07 | Tandem Diabetes Care Inc | Kyrillos Jean-Claude | EVP & Chief Operating Officer | Buy | 1 | 10,538 | $18.12 | $190,948.56 | 100.00% | View Filing |
| ESPP: Employee share purchase program TNDM | 2024-11-19 | 2024-11-15 | Tandem Diabetes Care Inc | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | Buy | 1 | 532 | $23.24 | $12,363.68 | 100.00% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. TNDM | 2023-11-29 | 2023-11-27 | Tandem Diabetes Care Inc | Allen Dick | Director | Buy | 1 | 5,000 | $18.96 | $94,800.00 | 25.05% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. TNDM | 2023-11-13 | 2023-11-08 | Tandem Diabetes Care Inc | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | Buy | 1 | 6,200 | $15.39 | $95,418.00 | 52.28% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. TNDM | 2023-05-22 | 2023-05-18 | Tandem Diabetes Care Inc | Allen Dick | Director | Buy | 1 | 10,000 | $29.47 | $294,700.00 | 81.93% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. TNDM | 2023-05-19 | 2023-05-17 | Tandem Diabetes Care Inc | Howell Peyton R | Director | Buy | 1 | 3,000 | $30.16 | $90,480.00 | 35.09% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. TNDM | 2023-05-16 | 2023-05-12 | Tandem Diabetes Care Inc | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | Buy | 1 | 3,015 | $32.77 | $98,801.55 | 53.27% | View Filing |
| Explained M/S: sale activity tied to share conversions or derivative-related share movements. TNDM | 2022-12-19 | 2022-12-16 | Tandem Diabetes Care Inc | Berger David B | EVP & Chief Operating Officer | Sell | 2 | 25,000 | $40.29 | $1,007,300.00 | 80.49% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. TNDM | 2022-05-10 | 2022-05-09 | Tandem Diabetes Care Inc | Sheridan John F | PRESIDENT & CEO | Buy | 1 | 2,500 | $69.90 | $174,750.00 | 24.86% | View Filing |
⚠️ THE SAMPLE ABOVE IS DEFERRED BY 6 HOURS ⚠️
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Alerts are based on public SEC filings and are provided for informational purposes only; they do not constitute financial advice.