John F. Sheridan
PRESIDENT & CEO at Tandem Diabetes Care Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Tandem Diabetes Care Inc., 3 years.
Tandem Diabetes Care Inc.
Director · PRESIDENT & CEO
Chief executive roles
Tandem Diabetes Care Inc.
· PRESIDENT & CEO
Dates unknown
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.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 15, 2026 | Tandem Diabetes Care Inc. | Option exercise | +5,982 | — | — |
| Aug 15, 2026 | Tandem Diabetes Care Inc. | Shares withheld for tax | −3,044 | $22.72 | $69,160 |
| Aug 15, 2026 | Tandem Diabetes Care Inc. | Option exercise | +9,934 | — | — |
| Aug 15, 2026 | Tandem Diabetes Care Inc. | Shares withheld for tax | −5,055 | $22.72 | $114,850 |
| May 15, 2026 | Tandem Diabetes Care Inc. | Option exercise | +5,472 | — | — |
| May 15, 2026 | Tandem Diabetes Care Inc. | Shares withheld for tax | −2,785 | $12.82 | $35,704 |
| May 15, 2026 | Tandem Diabetes Care Inc. | Option exercise | +5,982 | — | — |
| May 15, 2026 | Tandem Diabetes Care Inc. | Shares withheld for tax | −3,044 | $12.82 | $39,024 |
| May 15, 2026 | Tandem Diabetes Care Inc. | Option exercise | +39,735 | — | — |
| May 15, 2026 | Tandem Diabetes Care Inc. | Shares withheld for tax | −18,944 | $12.82 | $242,862 |
| May 15, 2026 | Tandem Diabetes Care Inc. | Grant or award | +1,336 | $10.90 | $14,562 |
| Feb 17, 2026 | Tandem Diabetes Care Inc. | Option exercise | +5,471 | — | — |
| Feb 17, 2026 | Tandem Diabetes Care Inc. | Shares withheld for tax | −1,963 | $18.95 | $37,199 |
| Feb 17, 2026 | Tandem Diabetes Care Inc. | Option exercise | +5,983 | — | — |
| Feb 17, 2026 | Tandem Diabetes Care Inc. | Shares withheld for tax | −2,400 | $18.95 | $45,480 |
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