Who
Christopher J. Twomey
Director
Company insider
Files Form 4 as: Director, Tandem Diabetes Care; Director, Bionano Genomics; Director, Senomyx; Director, Cadence Pharmaceuticals; Senior Vice President Finan, Biosite.
In numbers
- Trades disclosed
- 235
- Buys
- 2
- Sells
- 16
- Bought
- $211K
- Sold
- $26.2M
- Companies
- 5
- Companies where not an officer
- 5
- First trade
- 14 Mar 2006
- Last trade
- 21 May 2026
- Last filed
- 22 May 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 | |
|---|---|---|---|---|
| 21 May 2026filed 22 May 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | —8,759 at $0.00 | filing |
| 21 May 2026filed 22 May 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —8,759 at $0.00 | filing |
| 21 May 2026filed 22 May 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —8,759 at $0.00 | filing |
| 21 May 2026filed 22 May 2026 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | —8,759 at $0.00 | filing |
| 20 May 2026filed 22 May 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code A | —10,220 at $0.00 | filing |
| 20 May 2026filed 22 May 2026 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code A | —10,220 at $0.00 | filing |
| 14 May 2026filed 14 May 2026 | BNGO Bionano Genomicsoption or derivative · Life-science tools | SEC FORM 4 Code A | —9,149 at $0.00 | filing |
| 14 May 2026filed 14 May 2026 | BNGO Bionano Genomicsoption or derivative · Life-science tools | SEC FORM 4 Code A | —9,149 at $0.00 | filing |
| 11 Jun 2025filed 12 Jun 2025 | BNGO Bionano Genomicsoption or derivative · Life-science tools | SEC FORM 4 Code A | —2,775 at $0.00 | filing |
| 22 May 2025filed 23 May 2025 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —4,387 at $0.00 | filing |
| 22 May 2025filed 23 May 2025 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | $91K4,387 at $20.64 | filing |
| 21 May 2025filed 23 May 2025 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code A | —8,759 at $0.00 | filing |
| 18 Jun 2024filed 20 Jun 2024 | BNGO Bionano Genomicsoption or derivative · Life-science tools | SEC FORM 4 Code A | —30,000 at $0.00 | filing |
| 24 May 2024filed 24 May 2024 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —4,434 at $0.00 | filing |
| 24 May 2024filed 24 May 2024 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | $229K4,434 at $51.73 | filing |
| 22 May 2024filed 24 May 2024 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code A | —4,387 at $0.00 | filing |
| 14 Jun 2023filed 16 Jun 2023 | BNGO Bionano Genomicsoption or derivative · Life-science tools | SEC FORM 4 Code A | —250,000 at $0.00 | filing |
| 25 May 2023filed 26 May 2023 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —2,757 at $0.00 | filing |
| 25 May 2023filed 26 May 2023 | TNDM Tandem Diabetes CareMedical Devices | SEC FORM 4 Code M | —2,757 at $0.00 | filing |
| 24 May 2023filed 26 May 2023 | TNDM Tandem Diabetes Careoption or derivative · Medical Devices | SEC FORM 4 Code M | —4,434 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 Christopher J. Twomey; 1 article from the last 14 days about the 2 companies they traded most, at most three about any one of them.