Tandem Diabetes Care Inc.
Last updated September 27, 2026
Organization details
- Legal name
- Tandem Diabetes Care Inc.
- Ownership
- Public
- Status
- Active
- Headquarters country
- United States
- Ticker symbol
- TNDM
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0001438133
Board of directors
-
Christopher J. Twomey · DirectorSince 2023
-
Dick Allen · DirectorSince 2023
-
Joao Paulo Falcao Malagueira · DirectorSince 2023
-
John F. Sheridan · Director · PRESIDENT & CEOSince 2023
-
Kathleen McGroddy-Goetz · DirectorSince 2023
-
Kim D. Blickenstaff · DirectorSince 2023
-
Myoungil Cha · DirectorSince 2023
-
Peyton R. Howell · DirectorSince 2023
-
Rajwant Sodhi · DirectorSince 2023
-
Rebecca B. Robertson · DirectorSince 2023
-
Sandra Beaver · DirectorSince 2025
Chief executives
John F. Sheridan
· PRESIDENT & CEO
Dates unknown
Board connections
3 of this board's directors also sit on 3 other boards.
- via Christopher J. Twomey
- via Rebecca B. Robertson
- via Kim D. Blickenstaff
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $0
- 0 purchases by 0 insiders
- Sold, last 12 months
- $4,356
- 2 sales by 1 insider
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 15, 2026 | Carpenter Rick Officer (EVP & Chief Technology Officer) | Option exercise | +897 | — | — |
| Aug 15, 2026 | Gasser Elizabeth Anne Officer (EVP, Chief Strategy Officer) | Option exercise | +1,097 | — | — |
| Aug 15, 2026 | Hansen Shannon Marie Officer (EVP & Chief Legal Officer) | Option exercise | +1,097 | — | — |
| Aug 15, 2026 | Kyrillos Jean-Claude Officer (EVP & Chief Operating Officer) | Option exercise | +1,010 | — | — |
| Aug 15, 2026 | Morrison Susan Officer (EVP & Chief Admin. Officer) | Option exercise | +1,097 | — | — |
| Aug 15, 2026 | John F. Sheridan Director, Officer (PRESIDENT & CEO) | Option exercise | +5,982 | — | — |
| Aug 15, 2026 | Vosseller Leigh Officer (EVP & CHIEF FINANCIAL OFFICER) | Option exercise | +1,496 | — | — |
| Aug 15, 2026 | Carpenter Rick Officer (EVP & Chief Technology Officer) | Shares withheld for tax | −457 | $22.72 | $10,383 |
| Aug 15, 2026 | Gasser Elizabeth Anne Officer (EVP, Chief Strategy Officer) | Shares withheld for tax | −589 | $22.72 | $13,382 |
| Aug 15, 2026 | Hansen Shannon Marie Officer (EVP & Chief Legal Officer) | Shares withheld for tax | −559 | $22.72 | $12,700 |
| Aug 15, 2026 | Kyrillos Jean-Claude Officer (EVP & Chief Operating Officer) | Shares withheld for tax | −535 | $22.72 | $12,155 |
| Aug 15, 2026 | Morrison Susan Officer (EVP & Chief Admin. Officer) | Shares withheld for tax | −314 | $22.72 | $7,134 |
| Aug 15, 2026 | John F. Sheridan Director, Officer (PRESIDENT & CEO) | Shares withheld for tax | −3,044 | $22.72 | $69,160 |
| Aug 15, 2026 | Vosseller Leigh Officer (EVP & CHIEF FINANCIAL OFFICER) | Shares withheld for tax | −537 | $22.72 | $12,201 |
| Aug 15, 2026 | Carpenter Rick Officer (EVP & Chief Technology Officer) | Option exercise | +1,610 | — | — |
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