The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Sheridan John F since 2015.
This trader's CIK number is 1365369.
At the time of last reporting, Sheridan John F was the PRESIDENT & CEO of Tandem Diabetes Care Inc. (stock ticker symbol TNDM).
Also see all insider trading activities at Tandem Diabetes Care Inc.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | TNDM | 10,000 | $102,320 | 0 | $0 | 85,163 | $184,034 |
| 2024 | TNDM | 0 | $0 | 0 | $0 | 21,668 | $0 |
| 2023 | TNDM | 0 | $0 | 0 | $0 | 13,809 | $0 |
| 2022 | TNDM | 2,500 | $174,750 | 0 | $0 | 7,214 | $0 |
| 2021 | TNDM | 0 | $0 | 14,926 | $1,614,730 | 19,845 | $250,167 |
| 2020 | TNDM | 0 | $0 | 88,200 | $8,983,509 | 88,200 | $928,110 |
| 2019 | TNDM | 0 | $0 | 70,788 | $3,597,063 | 70,000 | $245,399 |
| 2016 | TNDM | 0 | $0 | 25,000 | $201,984 | 25,000 | $27,650 |
| 2015 | TNDM | 0 | $0 | 53,000 | $646,410 | 53,000 | $58,618 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-08-15 | TNDM | Option Ex | 11,453 | .00 | 0 |
| 2025-08-11 | TNDM | Buy | 10,000 | 10.23 | 102,320 |
| 2025-05-15 | TNDM | Option Ex | 32,429 | 5.67 | 184,034 |
| 2025-02-25 | TNDM | Option Ex | 32,779 | .00 | 0 |
| 2025-02-18 | TNDM | Option Ex | 8,502 | .00 | 0 |
| 2024-11-15 | TNDM | Option Ex | 8,499 | .00 | 0 |
| 2024-08-15 | TNDM | Option Ex | 8,501 | .00 | 0 |
| 2024-05-28 | TNDM | Option Ex | 820 | .00 | 0 |
| 2024-02-27 | TNDM | Option Ex | 819 | .00 | 0 |
| 2024-02-15 | TNDM | Option Ex | 3,029 | .00 | 0 |
| 2023-11-27 | TNDM | Option Ex | 820 | .00 | 0 |
| 2023-08-28 | TNDM | Option Ex | 820 | .00 | 0 |
| 2023-05-30 | TNDM | Option Ex | 820 | .00 | 0 |
| 2023-05-15 | TNDM | Option Ex | 9,738 | .00 | 0 |
| 2023-02-27 | TNDM | Option Ex | 819 | .00 | 0 |
| 2023-02-15 | TNDM | Option Ex | 792 | .00 | 0 |
| 2022-11-15 | TNDM | Option Ex | 793 | .00 | 0 |
| 2022-08-29 | TNDM | Option Ex | 820 | .00 | 0 |
| 2022-08-15 | TNDM | Option Ex | 792 | .00 | 0 |
| 2022-05-27 | TNDM | Option Ex | 820 | .00 | 0 |
| 2022-05-16 | TNDM | Option Ex | 3,170 | .00 | 0 |
| 2022-05-09 | TNDM | Buy | 2,500 | 69.90 | 174,750 |
| 2022-02-28 | TNDM | Option Ex | 819 | .00 | 0 |
| 2021-11-29 | TNDM | Option Ex | 820 | .00 | 0 |
| 2021-08-27 | TNDM | Option Ex | 820 | .00 | 0 |
| 2021-08-06 | TNDM | Sale | 5,323 | 108.71 | 578,663 |
| 2021-08-06 | TNDM | Option Ex | 5,323 | 12.97 | 69,055 |
| 2021-08-09 | TNDM | Sale | 9,603 | 107.89 | 1,036,067 |
| 2021-08-09 | TNDM | Option Ex | 9,603 | 18.86 | 181,112 |
| 2021-05-27 | TNDM | Option Ex | 3,279 | .00 | 0 |
| 2020-10-13 | TNDM | Option Ex | 15,000 | 18.86 | 282,900 |
| 2020-10-13 | TNDM | Sale | 15,000 | 121.52 | 1,822,755 |
| 2020-09-15 | TNDM | Option Ex | 9,599 | 18.86 | 181,037 |
| 2020-09-16 | TNDM | Option Ex | 401 | 18.86 | 7,562 |
| 2020-09-15 | TNDM | Sale | 9,599 | 110.00 | 1,055,918 |
| 2020-09-16 | TNDM | Sale | 401 | 110.37 | 44,258 |
| 2020-08-03 | TNDM | Sale | 33,200 | 102.61 | 3,406,718 |
| 2020-08-03 | TNDM | Option Ex | 33,200 | 11.41 | 378,911 |
| 2020-02-21 | TNDM | Option Ex | 30,000 | 2.59 | 77,700 |
| 2020-02-21 | TNDM | Sale | 30,000 | 88.46 | 2,653,860 |
| 2019-11-25 | TNDM | Sale | 462 | 70.00 | 32,340 |
| 2019-11-25 | TNDM | Option Ex | 462 | 2.59 | 1,196 |
| 2019-09-06 | TNDM | Option Ex | 9,538 | 2.59 | 24,703 |
| 2019-09-06 | TNDM | Sale | 9,538 | 70.03 | 667,946 |
| 2019-02-27 | TNDM | Sale | 20,000 | 62.22 | 1,244,400 |
| 2019-02-27 | TNDM | Option Ex | 20,000 | 5.79 | 115,900 |
| 2019-01-25 | TNDM | Option Ex | 20,000 | 2.59 | 51,800 |
| 2019-01-25 | TNDM | Sale | 20,000 | 45.26 | 905,180 |
| 2018-12-31 | TNDM | Sale | 788 | 37.81 | 29,797 |
| 2019-01-02 | TNDM | Sale | 20,000 | 35.87 | 717,400 |
| 2019-01-02 | TNDM | Option Ex | 20,000 | 2.59 | 51,800 |
| 2016-08-01 | TNDM | Option Ex | 15,000 | 1.11 | 16,590 |
| 2016-08-01 | TNDM | Sale | 15,000 | 6.52 | 97,800 |
| 2016-05-02 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2016-05-02 | TNDM | Sale | 2,000 | 10.61 | 21,212 |
| 2016-04-22 | TNDM | Sale | 2,000 | 10.00 | 20,000 |
| 2016-04-22 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2016-03-07 | TNDM | Option Ex | 4,000 | 1.11 | 4,424 |
| 2016-03-07 | TNDM | Sale | 4,000 | 10.01 | 40,028 |
| 2016-01-04 | TNDM | Sale | 2,000 | 11.47 | 22,944 |
| 2016-01-04 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2015-12-01 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2015-12-01 | TNDM | Sale | 2,000 | 10.14 | 20,280 |
| 2015-11-02 | TNDM | Option Ex | 4,000 | 1.11 | 4,424 |
| 2015-11-02 | TNDM | Sale | 4,000 | 10.00 | 40,000 |
| 2015-09-14 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2015-09-14 | TNDM | Sale | 2,000 | 12.51 | 25,020 |
| 2015-08-05 | TNDM | Sale | 17,500 | 12.70 | 222,197 |
| 2015-08-06 | TNDM | Option Ex | 17,500 | 1.11 | 19,355 |
| 2015-08-05 | TNDM | Option Ex | 17,500 | 1.11 | 19,355 |
| 2015-08-06 | TNDM | Sale | 17,500 | 12.19 | 213,395 |
| 2015-05-01 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2015-05-01 | TNDM | Sale | 2,000 | 13.72 | 27,436 |
| 2015-04-01 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2015-04-01 | TNDM | Sale | 2,000 | 12.47 | 24,940 |
| 2015-03-02 | TNDM | Sale | 2,000 | 11.76 | 23,514 |
| 2015-03-02 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2015-02-02 | TNDM | Sale | 2,000 | 12.06 | 24,128 |
| 2015-02-02 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2015-01-02 | TNDM | Option Ex | 2,000 | 1.11 | 2,212 |
| 2015-01-02 | TNDM | Sale | 2,000 | 12.75 | 25,500 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Sheridan John F (PRESIDENT & CEO of Tandem Diabetes Care Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.