| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
President & CEO | EVP, Chief Operating Officer | EVP & Chief Operating Officer
1 company
John F Sheridan is President & CEO at TNDM. From November 2015 to August 2026, the filings on record show 2 open-market purchases and 17 sales. John F Sheridan's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $2.8M at current prices.
Our model assigns John F Sheridan a middling insider score of 55/100, based on 4 past trades. Over a 12-month horizon, 75.0% of those trades were profitable, with an average 12-month return of +35.4%.
The TNDM filings lean toward selling, a net 192,414 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|
| Jan 25, 2019 | TNDM Tandem Diabetes Care Inc | EVP, Chief Operating Officer | Sale+OE | 20,000 | $45.26 | $905,178.00 | -96.8% | |
| Jan 2, 2019 | TNDM Tandem Diabetes Care Inc | EVP, Chief Operating Officer | Sale+OE | 20,788 | $35.76 | $743,308.32 | -96.9% | |
| Aug 1, 2016 | TNDM Tandem Diabetes Care Inc | EVP, Chief Operating Officer | Sale+OE | 15,000 | $6.52 | $97,800.00 | -65.9% | |
| May 2, 2016 | TNDM Tandem Diabetes Care Inc | EVP, Chief Operating Officer | Sale+OE | 2,000 | $10.61 | $21,212.60 | -27.4% | |
| Apr 22, 2016 | TNDM Tandem Diabetes Care Inc | EVP, Chief Operating Officer | Sale+OE | 2,000 | $10.00 | $20,000.00 | -27.4% | |
| Mar 7, 2016 | TNDM Tandem Diabetes Care Inc | EVP, Chief Operating Officer | Sale+OE | 4,000 | $10.01 | $40,026.00 | -43.0% | |
| Jan 4, 2016 | TNDM Tandem Diabetes Care Inc | EVP & Chief Operating Officer | Sale+OE | 2,000 | $11.47 | $22,944.20 | -37.8% | |
| Dec 1, 2015 | TNDM Tandem Diabetes Care Inc | EVP & Chief Operating Officer | Sale+OE | 2,000 | $10.14 | $20,280.00 | -32.9% | |
| Nov 2, 2015 | TNDM Tandem Diabetes Care Inc | EVP & Chief Operating Officer | Sale+OE | 4,000 | $10.00 | $40,000.00 | -49.5% |