16 insiders reported 292 Form 4 transactions for TANDEM DIABETES CARE INC (TNDM) over the past 18 months (most recent 2026-05-22). Recent activity: ROBERTSON REBECCA B (Director) Buy 8,759 shares, Malagueira Joao Paulo Falcao (Director) Buy 8,759 shares, Cha Myoungil (Director) Buy 8,759 shares, McGroddy-Goetz Kathleen (Director) Buy 8,759 shares, Sodhi Rajwant (Director) Buy 8,759 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-22 | ROBERTSON REBECCA B | Director | Buy | 8,759 | $0 |
| 2026-05-22 | Malagueira Joao Paulo Falcao | Director | Buy | 8,759 | $0 |
| 2026-05-22 | Cha Myoungil | Director | Buy | 8,759 | $0 |
| 2026-05-22 | McGroddy-Goetz Kathleen | Director | Buy | 8,759 | $0 |
| 2026-05-22 | Sodhi Rajwant | Director | Buy | 8,759 | $0 |
| 2026-05-22 | Allen Dick | Insider | Buy | 8,759 | $0 |
| 2026-05-22 | Howell Peyton R | Director | Buy | 8,759 | $0 |
| 2026-05-22 | TWOMEY CHRISTOPHER J | Director | Buy | 8,759 | $0 |
| 2026-05-19 | Hansen Shannon Marie | EVP & Chief Legal Officer | Buy | 1,437 | $0 |
| 2026-05-19 | Carpenter Rick | EVP & Chief Technology Officer | Buy | 1,437 | $0 |
| 2026-05-19 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | Buy | 76 | $0 |
| 2026-05-19 | Morrison Susan | EVP & Chief Admin. Officer | Buy | 1,503 | $0 |
| 2026-05-19 | Sheridan John F | PRESIDENT & CEO | Buy | 5,472 | $0 |
| 2026-05-19 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | Buy | 1,503 | $0 |
| 2026-05-19 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | Buy | 1,503 | $0 |
| 2026-05-19 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | Buy | 4,038 | $0 |
| 2026-05-19 | Sheridan John F | PRESIDENT & CEO | Sell | 2,785 | $35,704 |
| 2026-05-19 | Carpenter Rick | EVP & Chief Technology Officer | Sell | 732 | $9,384 |
| 2026-05-19 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | Sell | 57 | $731 |
| 2026-05-19 | Morrison Susan | EVP & Chief Admin. Officer | Sell | 430 | $5,513 |
| 2026-05-19 | Hansen Shannon Marie | EVP & Chief Legal Officer | Sell | 732 | $9,384 |
| 2026-05-19 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | Sell | 807 | $10,346 |
| 2026-05-19 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | Sell | 2,139 | $27,422 |
| 2026-05-19 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | Sell | 540 | $6,923 |
| 2026-05-19 | Carpenter Rick | EVP & Chief Technology Officer | Buy | 898 | $0 |
Source: SEC Form 4 filings · as of 2026-05-22