TANDEM DIABETES CARE INC (TNDM) — insider trading
Health Care · NASDAQ
TANDEM DIABETES CARE INC (TNDM) has 152 reported SEC Form 4 insider transactions in our data (latest 2026-10-15).
Recent Form 4 transactions
Showing the 100 most recent of 152 recorded transactions. See all on SEC EDGAR →
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-10-15 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Option exercise / conversion (derivative) | 3,637 | — | $0 | Form 4 |
| 2026-10-15 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Shares withheld for taxes / exercise cost | 1,926 | $16.52 | $31.8K | Form 4 |
| 2026-10-15 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Option exercise / conversion | 3,637 | — | $0 | Form 4 |
| 2026-08-15 | Hansen Shannon Marie | Officer (EVP & Chief Legal Officer) | Option exercise / conversion (derivative) | 1,917 | — | $0 | Form 4 |
| 2026-08-15 | Hansen Shannon Marie | Officer (EVP & Chief Legal Officer) | Option exercise / conversion (derivative) | 1,097 | — | $0 | Form 4 |
| 2026-08-15 | Hansen Shannon Marie | Officer (EVP & Chief Legal Officer) | Shares withheld for taxes / exercise cost | 976 | $22.72 | $22.2K | Form 4 |
| 2026-08-15 | Hansen Shannon Marie | Officer (EVP & Chief Legal Officer) | Option exercise / conversion | 1,917 | — | $0 | Form 4 |
| 2026-08-15 | Hansen Shannon Marie | Officer (EVP & Chief Legal Officer) | Shares withheld for taxes / exercise cost | 559 | $22.72 | $12.7K | Form 4 |
| 2026-08-15 | Hansen Shannon Marie | Officer (EVP & Chief Legal Officer) | Option exercise / conversion | 1,097 | — | $0 | Form 4 |
| 2026-08-15 | Carpenter Rick | Officer (EVP & Chief Technology Officer) | Option exercise / conversion (derivative) | 1,610 | — | $0 | Form 4 |
| 2026-08-15 | Carpenter Rick | Officer (EVP & Chief Technology Officer) | Option exercise / conversion (derivative) | 897 | — | $0 | Form 4 |
| 2026-08-15 | Carpenter Rick | Officer (EVP & Chief Technology Officer) | Shares withheld for taxes / exercise cost | 820 | $22.72 | $18.6K | Form 4 |
| 2026-08-15 | Carpenter Rick | Officer (EVP & Chief Technology Officer) | Option exercise / conversion | 1,610 | — | $0 | Form 4 |
| 2026-08-15 | Carpenter Rick | Officer (EVP & Chief Technology Officer) | Shares withheld for taxes / exercise cost | 457 | $22.72 | $10.4K | Form 4 |
| 2026-08-15 | Carpenter Rick | Officer (EVP & Chief Technology Officer) | Option exercise / conversion | 897 | — | $0 | Form 4 |
| 2026-08-15 | Gasser Elizabeth Anne | Officer (EVP, Chief Strategy Officer) | Option exercise / conversion (derivative) | 1,917 | — | $0 | Form 4 |
| 2026-08-15 | Gasser Elizabeth Anne | Officer (EVP, Chief Strategy Officer) | Option exercise / conversion (derivative) | 1,097 | — | $0 | Form 4 |
| 2026-08-15 | Gasser Elizabeth Anne | Officer (EVP, Chief Strategy Officer) | Shares withheld for taxes / exercise cost | 1,029 | $22.72 | $23.4K | Form 4 |
| 2026-08-15 | Gasser Elizabeth Anne | Officer (EVP, Chief Strategy Officer) | Option exercise / conversion | 1,917 | — | $0 | Form 4 |
| 2026-08-15 | Gasser Elizabeth Anne | Officer (EVP, Chief Strategy Officer) | Shares withheld for taxes / exercise cost | 589 | $22.72 | $13.4K | Form 4 |
| 2026-08-15 | Gasser Elizabeth Anne | Officer (EVP, Chief Strategy Officer) | Option exercise / conversion | 1,097 | — | $0 | Form 4 |
| 2026-08-15 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Option exercise / conversion (derivative) | 1,010 | — | $0 | Form 4 |
| 2026-08-15 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Shares withheld for taxes / exercise cost | 535 | $22.72 | $12.2K | Form 4 |
| 2026-08-15 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Option exercise / conversion | 1,010 | — | $0 | Form 4 |
| 2026-08-15 | Morrison Susan | Officer (EVP & Chief Admin. Officer) | Option exercise / conversion (derivative) | 1,730 | — | $0 | Form 4 |
| 2026-08-15 | Morrison Susan | Officer (EVP & Chief Admin. Officer) | Option exercise / conversion (derivative) | 1,097 | — | $0 | Form 4 |
| 2026-08-15 | Morrison Susan | Officer (EVP & Chief Admin. Officer) | Shares withheld for taxes / exercise cost | 495 | $22.72 | $11.2K | Form 4 |
| 2026-08-15 | Morrison Susan | Officer (EVP & Chief Admin. Officer) | Option exercise / conversion | 1,730 | — | $0 | Form 4 |
| 2026-08-15 | Morrison Susan | Officer (EVP & Chief Admin. Officer) | Shares withheld for taxes / exercise cost | 314 | $22.72 | $7.1K | Form 4 |
| 2026-08-15 | Morrison Susan | Officer (EVP & Chief Admin. Officer) | Option exercise / conversion | 1,097 | — | $0 | Form 4 |
| 2026-08-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Option exercise / conversion (derivative) | 9,934 | — | $0 | Form 4 |
| 2026-08-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Option exercise / conversion (derivative) | 5,982 | — | $0 | Form 4 |
| 2026-08-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Shares withheld for taxes / exercise cost | 5,055 | $22.72 | $114.8K | Form 4 |
| 2026-08-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Option exercise / conversion | 9,934 | — | $0 | Form 4 |
| 2026-08-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Shares withheld for taxes / exercise cost | 3,044 | $22.72 | $69.2K | Form 4 |
| 2026-08-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Option exercise / conversion | 5,982 | — | $0 | Form 4 |
| 2026-08-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion (derivative) | 2,624 | — | $0 | Form 4 |
| 2026-08-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion (derivative) | 1,496 | — | $0 | Form 4 |
| 2026-08-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Shares withheld for taxes / exercise cost | 942 | $22.72 | $21.4K | Form 4 |
| 2026-08-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion | 2,624 | — | $0 | Form 4 |
| 2026-08-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Shares withheld for taxes / exercise cost | 537 | $22.72 | $12.2K | Form 4 |
| 2026-08-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion | 1,496 | — | $0 | Form 4 |
| 2026-07-15 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Option exercise / conversion (derivative) | 3,636 | — | $0 | Form 4 |
| 2026-07-15 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Shares withheld for taxes / exercise cost | 1,926 | $15.28 | $29.4K | Form 4 |
| 2026-07-15 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Option exercise / conversion | 3,636 | — | $0 | Form 4 |
| 2026-06-02 | Gasser Elizabeth Anne | Officer (EVP, Chief Strategy Officer) | Bona fide gift | 7,160 | — | $0 | Form 4 |
| 2026-06-02 | Gasser Elizabeth Anne | Officer (EVP, Chief Strategy Officer) | Bona fide gift | 7,160 | — | $0 | Form 4 |
| 2026-05-29 | Hansen Shannon Marie | Officer (EVP & Chief Legal Officer) | Grant / award / vesting (derivative) | 29,136 | — | $0 | Form 4 |
| 2026-05-29 | Carpenter Rick | Officer (EVP & Chief Technology Officer) | Grant / award / vesting (derivative) | 26,003 | — | $0 | Form 4 |
| 2026-05-29 | Morrison Susan | Officer (EVP & Chief Admin. Officer) | Grant / award / vesting (derivative) | 29,136 | — | $0 | Form 4 |
| 2026-05-29 | Kyrillos Jean-Claude | Officer (EVP & Chief Operating Officer) | Grant / award / vesting (derivative) | 29,136 | — | $0 | Form 4 |
| 2026-05-29 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Grant / award / vesting (derivative) | 62,657 | — | $0 | Form 4 |
| 2026-05-29 | Gasser Elizabeth Anne | Officer (EVP, Chief Strategy Officer) | Grant / award / vesting (derivative) | 29,136 | — | $0 | Form 4 |
| 2026-05-29 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Grant / award / vesting (derivative) | 191,103 | — | $0 | Form 4 |
| 2026-05-21 | Cha Myoungil | Director | Option exercise / conversion (derivative) | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | Cha Myoungil | Director | Option exercise / conversion | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | TWOMEY CHRISTOPHER J | Director | Option exercise / conversion (derivative) | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | TWOMEY CHRISTOPHER J | Director | Option exercise / conversion | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | ROBERTSON REBECCA B | Director | Option exercise / conversion (derivative) | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | ROBERTSON REBECCA B | Director | Option exercise / conversion | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | McGroddy-Goetz Kathleen | Director | Option exercise / conversion (derivative) | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | McGroddy-Goetz Kathleen | Director | Option exercise / conversion | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | Sodhi Rajwant | Director | Option exercise / conversion (derivative) | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | Sodhi Rajwant | Director | Option exercise / conversion | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | Malagueira Joao Paulo Falcao | Director | Option exercise / conversion (derivative) | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | Malagueira Joao Paulo Falcao | Director | Option exercise / conversion | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | Howell Peyton R | Director | Option exercise / conversion (derivative) | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | Howell Peyton R | Director | Option exercise / conversion | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | Allen Dick | Other | Option exercise / conversion (derivative) | 8,759 | — | $0 | Form 4 |
| 2026-05-21 | Allen Dick | Other | Option exercise / conversion | 8,759 | — | $0 | Form 4 |
| 2026-05-20 | Cha Myoungil | Director | Grant / award / vesting (derivative) | 10,220 | — | $0 | Form 4 |
| 2026-05-20 | TWOMEY CHRISTOPHER J | Director | Grant / award / vesting (derivative) | 10,220 | — | $0 | Form 4 |
| 2026-05-20 | ROBERTSON REBECCA B | Director | Grant / award / vesting (derivative) | 10,220 | — | $0 | Form 4 |
| 2026-05-20 | McGroddy-Goetz Kathleen | Director | Grant / award / vesting (derivative) | 10,220 | — | $0 | Form 4 |
| 2026-05-20 | Sodhi Rajwant | Director | Grant / award / vesting (derivative) | 10,220 | — | $0 | Form 4 |
| 2026-05-20 | Beaver Sandra | Director | Grant / award / vesting (derivative) | 5,110 | — | $0 | Form 4 |
| 2026-05-20 | Malagueira Joao Paulo Falcao | Director | Grant / award / vesting (derivative) | 10,220 | — | $0 | Form 4 |
| 2026-05-20 | Howell Peyton R | Director | Grant / award / vesting (derivative) | 10,220 | — | $0 | Form 4 |
| 2026-05-20 | Allen Dick | Other | Grant / award / vesting (derivative) | 10,220 | — | $0 | Form 4 |
| 2026-05-15 | Novara Mark David | Officer (EVP & CHIEF COMMERCIAL OFFICER) | Option exercise / conversion (derivative) | 10,496 | — | $0 | Form 4 |
| 2026-05-15 | Novara Mark David | Officer (EVP & CHIEF COMMERCIAL OFFICER) | Option exercise / conversion (derivative) | 76 | — | $0 | Form 4 |
| 2026-05-15 | Novara Mark David | Officer (EVP & CHIEF COMMERCIAL OFFICER) | Shares withheld for taxes / exercise cost | 7,854 | $12.82 | $100.7K | Form 4 |
| 2026-05-15 | Novara Mark David | Officer (EVP & CHIEF COMMERCIAL OFFICER) | Option exercise / conversion | 10,496 | — | $0 | Form 4 |
| 2026-05-15 | Novara Mark David | Officer (EVP & CHIEF COMMERCIAL OFFICER) | Shares withheld for taxes / exercise cost | 57 | $12.82 | $731 | Form 4 |
| 2026-05-15 | Novara Mark David | Officer (EVP & CHIEF COMMERCIAL OFFICER) | Option exercise / conversion | 76 | — | $0 | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion (derivative) | 10,496 | — | $0 | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion (derivative) | 1,496 | — | $0 | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion (derivative) | 1,503 | — | $0 | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Grant / award / vesting | 1,336 | $10.90 | $14.6K | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Shares withheld for taxes / exercise cost | 3,766 | $12.82 | $48.3K | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion | 10,496 | — | $0 | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Shares withheld for taxes / exercise cost | 537 | $12.82 | $6.9K | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion | 1,496 | — | $0 | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Shares withheld for taxes / exercise cost | 540 | $12.82 | $6.9K | Form 4 |
| 2026-05-15 | Vosseller Leigh | Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise / conversion | 1,503 | — | $0 | Form 4 |
| 2026-05-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Option exercise / conversion (derivative) | 39,735 | — | $0 | Form 4 |
| 2026-05-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Option exercise / conversion (derivative) | 5,982 | — | $0 | Form 4 |
| 2026-05-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Option exercise / conversion (derivative) | 5,472 | — | $0 | Form 4 |
| 2026-05-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Grant / award / vesting | 1,336 | $10.90 | $14.6K | Form 4 |
| 2026-05-15 | Sheridan John F | Director, Officer (PRESIDENT & CEO) | Shares withheld for taxes / exercise cost | 18,944 | $12.82 | $242.9K | Form 4 |
Ask the chat about TNDM's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: TANDEM DIABETES CARE INC (TNDM).
Last updated 2026-10-15 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.