Who
John F. Sheridan
President & CEO
Company insider
Files Form 4 as: President & CEO, Tandem Diabetes Care; Director, Acutus Medical; Exec VP of R&D & Operations, Volcano.
In numbers
- Trades disclosed
- 449
- Buys
- 2
- Sells
- 44
- Bought
- $277K
- Sold
- $17.5M
- Companies
- 3
- Companies where not an officer
- 1
- First trade
- 12 Dec 2006
- Last trade
- 15 Aug 2026
- Last filed
- 18 Aug 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | —5,982 at $0.00 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code F | $69K3,044 at $22.72 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | —9,934 at $0.00 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —5,982 at $0.00 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —9,934 at $0.00 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code F | $115K5,055 at $22.72 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —5,982 at $0.00 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —9,934 at $0.00 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | —5,982 at $0.00 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code F | $69K3,044 at $22.72 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | —9,934 at $0.00 | filing |
| 15 Aug 2026filed 18 Aug 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code F | $115K5,055 at $22.72 | filing |
| 29 May 2026filed 2 Jun 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code A | —191,103 at $0.00 | filing |
| 29 May 2026filed 2 Jun 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code A | —191,103 at $0.00 | filing |
| 15 May 2026filed 19 May 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | —5,472 at $0.00 | filing |
| 15 May 2026filed 19 May 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —39,735 at $0.00 | filing |
| 15 May 2026filed 19 May 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code F | $36K2,785 at $12.82 | filing |
| 15 May 2026filed 19 May 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | —5,982 at $0.00 | filing |
| 15 May 2026filed 19 May 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —5,472 at $0.00 | filing |
| 15 May 2026filed 19 May 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —5,982 at $0.00 | filing |
News
Tandem Diabetes Care (TNDM) Following App Recall Is The Undervalued Case Still IntactTNDM · cedarnews.net · 18 Oct 2026
0 headlines in the last 90 days name John F. Sheridan; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.