Form 4: Tandem Diabetes Care CFO Reports Stock Transaction
Insider Transaction (Form 4)
Leigh Vosseller, EVP & CHIEF FINANCIAL OFFICER of Tandem Diabetes Care Inc, reported multiple transactions in common stock on August 15, 2026.
Summary
- Option exercise/conversion: acquired 1,496 Common Stock on August 15, 2026; holds 50,895 after (Direct).
- Tax/exercise-price withholding: disposed of 537 Common Stock at $22.72 ($12,201) on August 15, 2026; holds 50,358 after (Direct).
- Option exercise/conversion: acquired 2,624 Common Stock on August 15, 2026; holds 52,982 after (Direct).
- Tax/exercise-price withholding: disposed of 942 Common Stock at $22.72 ($21,402) on August 15, 2026; holds 52,040 after (Direct).
- Option exercise/conversion: disposed of 1,496 Restricted Stock Unit on August 15, 2026; holds 4,486 after (Direct).
- Option exercise/conversion: disposed of 2,624 Restricted Stock Unit on August 15, 2026; holds 18,368 after (Direct).
Sentiment
Score: 5
Explanation: StockSavvy.ai views this as routine: the reported changes are grants, option exercises, tax withholding or similar administrative transactions, which carry limited directional signal.
Insider Transactions
Leigh Vosseller — Officer (EVP & CHIEF FINANCIAL OFFICER)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-15 | Option exercise/conversion | Common Stock | 1,496 | — | — | 50,895 |
| 2026-08-15 | Tax/exercise-price withholding | Common Stock | 537 | $23 | $12.2K | 50,358 |
| 2026-08-15 | Option exercise/conversion | Common Stock | 2,624 | — | — | 52,982 |
| 2026-08-15 | Tax/exercise-price withholding | Common Stock | 942 | $23 | $21.4K | 52,040 |
| 2026-08-15 | Option exercise/conversion | Restricted Stock Unit | 1,496 | — | — | 4,486 |
| 2026-08-15 | Option exercise/conversion | Restricted Stock Unit | 2,624 | — | — | 18,368 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-15 | Option exercise/conversion (1,496 shares) |
| 2026-08-15 | Tax/exercise-price withholding (537 shares) |
| 2026-08-15 | Option exercise/conversion (2,624 shares) |
| 2026-08-15 | Tax/exercise-price withholding (942 shares) |
| 2026-08-15 | Option exercise/conversion (1,496 shares) |
| 2026-08-15 | Option exercise/conversion (2,624 shares) |
Keywords
insider transaction, Form 4, TNDM, TANDEM DIABETES CARE INC, neutral, Leigh Vosseller
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