| 2021-08-03 | Balo Andrew K | * | Sell | 2,557 | $516.11 | $1,319,681.17 | -3.0% | → |
| 2021-07-30 | Leach Jacob Steven | EVP Chief Technology Officer | Sell | 12,087 | $476.70 | $5,761,872.90 | -14.6% | → |
| 2021-07-26 | Murphy Patrick Michael | EVP, Chief Legal Officer | Sell | 500 | $458.79 | $229,395.00 | -2.7% | → |
| 2021-07-23 | Pacelli Steven Robert | Managing Dir., Dexcom Ventures | Sell | 1,079 | $452.18 | $487,897.41 | -1.1% | → |
| 2021-07-16 | Shrishrimal Sumi | SVP Chief Risk Officer | Sell | 400 | $450.00 | $180,000.00 | -3.1% | → |
| 2021-07-06 | Balo Andrew K | * | Sell | 2,974 | $430.14 | $1,279,227.83 | -4.9% | → |
| 2021-06-28 | Murphy Patrick Michael | EVP, Chief Legal Officer | Sell | 500 | $431.49 | $215,745.00 | -2.7% | → |
| 2021-06-23 | Pacelli Steven Robert | Managing Dir., Dexcom Ventures | Sell | 1,079 | $426.92 | $460,651.47 | -0.7% | → |
| 2021-06-22 | SKYLER JAY S | Director | Sell | 20,000 | $426.37 | $8,527,406.24 | -24.7% | → |
| 2021-06-11 | Shrishrimal Sumi | SVP Chief Risk Officer | Sell | 400 | $401.09 | $160,436.00 | -3.0% | → |
| 2021-06-09 | Leach Jacob Steven | EVP Chief Technology Officer | Sell | 22,755 | $395.00 | $8,988,225.00 | -21.6% | → |
| 2021-06-03 | Balo Andrew K | * | Sell | 2,391 | $375.00 | $896,625.00 | -12.7% | → |
| 2021-06-03 | AUGUSTINOS NICHOLAS | Director | Sell | 806 | $366.99 | $295,793.94 | -20.6% | → |
| 2021-05-28 | Blackford Quentin S. | Chief Operating Officer | Sell | 7,223 | $375.00 | $2,708,625.00 | -16.0% | → |
| 2021-05-26 | Murphy Patrick Michael | EVP, Chief Legal Officer | Sell | 500 | $350.00 | $175,000.00 | -2.6% | → |
| 2021-05-25 | Shrishrimal Sumi | SVP Chief Risk Officer | Sell | 1,461 | $354.79 | $518,348.19 | -9.8% | → |
| 2021-05-24 | Pacelli Steven Robert | Managing Dir., Dexcom Ventures | Sell | 1,079 | $348.71 | $376,260.26 | -0.3% | → |
| 2021-05-24 | Sylvain Jereme M | EVP, Chief Financial Officer | Sell | 600 | $346.74 | $208,044.00 | -4.0% | → |
| 2021-05-03 | SAYER KEVIN R | Chairman, CEO & President | Sell | 5,535 | $379.88 | $2,102,626.24 | -0.7% | → |
| 2021-04-26 | Murphy Patrick Michael | EVP, Chief Legal Officer | Sell | 500 | $415.83 | $207,915.00 | -2.5% | → |
| 2021-04-23 | Pacelli Steven Robert | Managing Dir., Dexcom Ventures | Sell | 1,079 | $410.31 | $442,727.14 | -0.7% | → |
| 2021-04-15 | Flynn Paul R | EVP, Global Revenue | Sell | 758 | $400.00 | $303,200.00 | -5.8% | → |