CIK 0001438133 · Large accelerated filer
TANDEM DIABETES CARE INC
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- TNDM
- Exchange
- Nasdaq
- Industry
- Surgical & Medical Instruments & Apparatus
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 204327508
- Phone
- 858-366-6900
- Business address
- 12400 HIGH BLUFF DRIVE, San Diego, CA, 92130
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $32,555
- in 1 filing, $33K under 10b5-1 plans
Net −$32,555. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-10-27 | TWOMEY CHRISTOPHER J Director | Option exercise 10b5-1 | +1,700 | $19.00 | $32K | 26,134 |
| 2026-10-27 | TWOMEY CHRISTOPHER J Director | Sale 10b5-1 | −1,700 | $19.15 | $33K | 24,434 |
| 2026-10-27 | TWOMEY CHRISTOPHER J Director | Option exercise · Stock Option 10b5-1 | −1,700 | 0 | ||
| 2026-10-15 | Kyrillos Jean-Claude EVP & Chief Operating Officer | Option exercise | +3,637 | 33,927 | ||
| 2026-10-15 | Kyrillos Jean-Claude EVP & Chief Operating Officer | Shares withheld for taxes | −1,926 | $16.52 | $32K | 32,001 |
| 2026-10-15 | Kyrillos Jean-Claude EVP & Chief Operating Officer | Option exercise · Restricted Stock Unit | −3,637 | 10,908 | ||
| 2026-08-15 | Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER | Option exercise | +1,496 | 50,895 | ||
| 2026-08-15 | Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER | Shares withheld for taxes | −537 | $22.72 | $12K | 50,358 |
| 2026-08-15 | Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER | Option exercise | +2,624 | 52,982 | ||
| 2026-08-15 | Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER | Shares withheld for taxes | −942 | $22.72 | $21K | 52,040 |
| 2026-08-15 | Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER | Option exercise · Restricted Stock Unit | −1,496 | 4,486 | ||
| 2026-08-15 | Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER | Option exercise · Restricted Stock Unit | −2,624 | 18,368 | ||
| 2026-08-15 | Sheridan John F PRESIDENT & CEO | Option exercise | +5,982 | 158,425 | ||
| 2026-08-15 | Sheridan John F PRESIDENT & CEO | Shares withheld for taxes | −3,044 | $22.72 | $69K | 155,381 |
| 2026-08-15 | Sheridan John F PRESIDENT & CEO | Option exercise | +9,934 | 165,315 | ||
| 2026-08-15 | Sheridan John F PRESIDENT & CEO | Shares withheld for taxes | −5,055 | $22.72 | $115K | 160,260 |
| 2026-08-15 | Sheridan John F PRESIDENT & CEO | Option exercise · Restricted Stock Unit | −5,982 | 17,947 | ||
| 2026-08-15 | Sheridan John F PRESIDENT & CEO | Option exercise · Restricted Stock Unit | −9,934 | 69,537 | ||
| 2026-08-15 | Morrison Susan EVP & Chief Admin. Officer | Option exercise | +1,097 | 51,867 | ||
| 2026-08-15 | Morrison Susan EVP & Chief Admin. Officer | Shares withheld for taxes | −314 | $22.72 | $7K | 51,553 |
Page 1 of 22 · 432 trades