16 insiders reported 274 Form 4 transactions for TANDEM DIABETES CARE INC (TNDM) over the past 18 months (most recent 2026-08-18). Recent activity: Morrison Susan (EVP & Chief Admin. Officer) Buy 1,097 shares, Hansen Shannon Marie (EVP & Chief Legal Officer) Buy 1,917 shares, Gasser Elizabeth Anne (EVP, Chief Strategy Officer) Buy 1,097 shares, Kyrillos Jean-Claude (EVP & Chief Operating Officer) Buy 1,010 shares, Carpenter Rick (EVP & Chief Technology Officer) Buy 897 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | Morrison Susan | EVP & Chief Admin. Officer | Buy | 1,097 | $0 |
| 2026-08-18 | Hansen Shannon Marie | EVP & Chief Legal Officer | Buy | 1,917 | $0 |
| 2026-08-18 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | Buy | 1,097 | $0 |
| 2026-08-18 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | Buy | 1,010 | $0 |
| 2026-08-18 | Carpenter Rick | EVP & Chief Technology Officer | Buy | 897 | $0 |
| 2026-08-18 | Sheridan John F | PRESIDENT & CEO | Buy | 5,982 | $0 |
| 2026-08-18 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | Buy | 1,496 | $0 |
| 2026-08-18 | Hansen Shannon Marie | EVP & Chief Legal Officer | Buy | 1,097 | $0 |
| 2026-08-18 | Sheridan John F | PRESIDENT & CEO | Sell | 3,044 | $69,160 |
| 2026-08-18 | Morrison Susan | EVP & Chief Admin. Officer | Sell | 314 | $7,134 |
| 2026-08-18 | Carpenter Rick | EVP & Chief Technology Officer | Sell | 457 | $10,383 |
| 2026-08-18 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | Sell | 535 | $12,155 |
| 2026-08-18 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | Sell | 589 | $13,382 |
| 2026-08-18 | Hansen Shannon Marie | EVP & Chief Legal Officer | Sell | 559 | $12,700 |
| 2026-08-18 | Morrison Susan | EVP & Chief Admin. Officer | Buy | 1,730 | $0 |
| 2026-08-18 | Carpenter Rick | EVP & Chief Technology Officer | Buy | 1,610 | $0 |
| 2026-08-18 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | Buy | 2,624 | $0 |
| 2026-08-18 | Sheridan John F | PRESIDENT & CEO | Buy | 9,934 | $0 |
| 2026-08-18 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | Buy | 1,917 | $0 |
| 2026-08-18 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | Sell | 1,029 | $23,379 |
| 2026-08-18 | Morrison Susan | EVP & Chief Admin. Officer | Sell | 495 | $11,246 |
| 2026-08-18 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | Sell | 942 | $21,402 |
| 2026-08-18 | Sheridan John F | PRESIDENT & CEO | Sell | 5,055 | $114,850 |
| 2026-08-18 | Hansen Shannon Marie | EVP & Chief Legal Officer | Sell | 976 | $22,175 |
| 2026-08-18 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | Sell | 537 | $12,201 |
Source: SEC Form 4 filings · as of 2026-08-18