DEXCOM INC — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Collins Richard Alexander | — | Sale | 2,906 | $59.05 | $171,599 | 35,088 | Nov 14, 2025 |
| Heller Bridgette P | — | Sale | 1,012 | $58.07 | $58,767 | 27,031 | Nov 12, 2025 |
| Leach Jacob Steven | President & COO | Purchase | 15,700 | $54.98 | $863,186 | 329,197 | Nov 10, 2025 |
| Collins Richard Alexander | — | Sale | 3,948 | $55.17 | $217,811 | 37,994 | Nov 10, 2025 |
| Ashley Euan A. | — | Award / Grant | 7,166 | — | — | 7,166 | Oct 24, 2025 |
| Malady Kyle | — | Sale | 667 | $80.86 | $53,934 | 22,667 | Sep 5, 2025 |
| Stern Sadie | EVP, Chief HR Officer | Sale | 1,466 | $80.00 | $117,280 | 105,223 | Sep 4, 2025 |
| Sylvain Jereme M | EVP, Chief Financal Officer | Sale | 4,824 | $74.17 | $357,796 | 118,657 | Sep 2, 2025 |
| Brown Michael Jon | EVP, Chief Legal Officer | Sale | 500 | $80.29 | $40,145 | 94,102 | Aug 15, 2025 |
| FOLETTA MARK G | — | Sale | 2,555 | $81.02 | $207,006 | 51,316 | Aug 15, 2025 |
| Stern Sadie | EVP, Chief HR Officer | Sale | 1,466 | $88.99 | $130,459 | 106,689 | Jul 28, 2025 |
| FOLETTA MARK G | — | Sale | 2,742 | $85.17 | $233,536 | 53,879 | Jul 15, 2025 |
| Brown Michael Jon | EVP, Chief Legal Officer | Sale | 500 | $86.03 | $43,015 | 94,602 | Jul 15, 2025 |
| Stern Sadie | EVP, Chief HR Officer | Sale | 1,466 | $85.06 | $124,698 | 108,155 | Jun 26, 2025 |
| FOLETTA MARK G | — | Sale | 2,750 | $83.13 | $228,608 | 56,621 | Jun 16, 2025 |
| Brown Michael Jon | EVP, Chief Legal Officer | Sale | 500 | $82.80 | $41,400 | 95,102 | Jun 16, 2025 |
| AUGUSTINOS NICHOLAS | — | Sale | 3,672 | $82.80 | $304,042 | 33,411 | Jun 13, 2025 |
| Stern Sadie | EVP, Chief HR Officer | Sale | 6,184 | $85.11 | $526,320 | 109,621 | May 27, 2025 |
| Brown Michael Jon | EVP, Chief Legal Officer | Sale | 10,000 | $84.28 | $842,800 | 95,602 | May 23, 2025 |
| Coleman Jon | EVP, Chief Commercial Officer | Award / Grant | 68,738 | — | — | 68,738 | May 22, 2025 |
| Driscoll Rimma | — | Award / Grant | 5,074 | — | — | 11,714 | May 8, 2025 |
| GALA RENEE D | — | Award / Grant | 5,074 | — | — | 10,794 | May 8, 2025 |
| Malady Kyle | — | Award / Grant | 5,192 | — | — | 23,334 | May 8, 2025 |
| Dahut Karen M | — | Gift | 2,613 | — | — | 17,779 | May 8, 2025 |
| Heller Bridgette P | — | Award / Grant | 5,046 | — | — | 28,043 | May 8, 2025 |
| AUGUSTINOS NICHOLAS | — | Gift | 2,618 | — | — | — | May 8, 2025 |
| FOLETTA MARK G | — | Gift | 2,973 | — | — | — | May 8, 2025 |
| Collins Richard Alexander | — | Gift | 2,632 | — | — | — | May 8, 2025 |
| ALTMAN STEVEN R | — | Gift | 2,613 | — | — | 58,630 | May 8, 2025 |
| TOPOL ERIC | — | Gift | 2,618 | — | — | 380,545 | May 8, 2025 |
| GALA RENEE D | — | Award / Grant | 1,161 | — | — | 6,881 | May 8, 2025 |
| Heller Bridgette P | — | Sale | 352 | $70.33 | $24,756 | 22,997 | Mar 17, 2025 |
| Leach Jacob Steven | EVP, Chief Operating Officer | Sale | 14,076 | $70.38 | $990,669 | 313,497 | Mar 12, 2025 |
| Brown Michael Jon | EVP, Chief Legal Officer | Sale | 13,000 | $70.38 | $914,940 | 105,602 | Mar 12, 2025 |
| Sylvain Jereme M | EVP, Chief Financal Officer | Sale | 12,001 | $70.38 | $844,630 | 123,481 | Mar 12, 2025 |
| Stern Sadie | EVP, Chief HR Officer | Sale | 11,176 | $70.38 | $786,567 | 115,805 | Mar 12, 2025 |
| SAYER KEVIN R | Chairman, CEO & President | Sale | 32,498 | $70.38 | $2,287,209 | 372,029 | Mar 12, 2025 |
| Sylvain Jereme M | EVP, Chief Financal Officer | Award / Grant | 35,906 | — | — | 119,684 | Mar 10, 2025 |
| SAYER KEVIN R | Chairman, CEO & President | Award / Grant | 85,490 | — | — | 404,527 | Mar 8, 2025 |
| Leach Jacob Steven | EVP, Chief Operating Officer | Award / Grant | 35,906 | — | — | 304,775 | Mar 8, 2025 |
| Stern Sadie | EVP, Chief HR Officer | Award / Grant | 29,922 | — | — | 104,183 | Mar 8, 2025 |
| Brown Michael Jon | EVP, Chief Legal Officer | Award / Grant | 22,798 | — | — | 118,602 | Mar 8, 2025 |
| GALA RENEE D | — | Award / Grant | 5,720 | — | — | 5,720 | Mar 6, 2025 |
| Sylvain Jereme M | EVP, Chief Financal Officer | Award / Grant | 5,586 | — | — | 85,616 | Jan 29, 2025 |
| Dolan Matthew Vincent | EVP, Strategy & Corporate Dev | Sale | 1,183 | $86.91 | $102,815 | 42,044 | Jan 28, 2025 |
| Stern Sadie | EVP, Chief HR Officer | Sale | 2,093 | $86.91 | $181,903 | 74,261 | Jan 28, 2025 |
| Leach Jacob Steven | EVP, Chief Operating Officer | Sale | 2,634 | $86.91 | $228,921 | 268,644 | Jan 28, 2025 |
| SAYER KEVIN R | Chairman, CEO & President | Sale | 33,359 | $86.91 | $2,899,231 | 319,037 | Jan 28, 2025 |
| Stern Sadie | EVP, Chief HR Officer | Sale | 424 | $76.87 | $32,593 | 70,768 | Dec 16, 2024 |
| Sylvain Jereme M | EVP, Chief Financal Officer | Sale | 744 | $76.87 | $57,191 | 80,030 | Dec 16, 2024 |