Dexcom, Inc.
A maker of continuous glucose monitors that let people with diabetes track their blood sugar in real time without routine fingersticks, with products like the G6, G7, and Stelo. Founded in 1999 in San Diego, the company grew out of research at the University of Wisconsin and launched its first FDA-approved sensor in 2006. Its Stelo was the first continuous glucose monitor cleared for over-the-counter sale in the US, no prescription needed.
Granted 2.6K
Granted 214.4K · Bought 18.2K · Sold 37.6K
Granted 382.4K · Sold 287.3K
Granted 153.4K · Sold 49.4K
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Granted 133.8K · Sold 58.3K
Sold 1.2K
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Granted 120.6K · Sold 49.6K
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Granted 13.4K · Sold 667
Granted 13.3K
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| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Topol EricDirector · 5 transactions | +62.2% | 761.1Kas of May 2025 | 2.6K | — | — |
| Leach Jacob StevenPresident, CEO, and Director, Director · 22 transactions | +51.9% | 466.2K | 214.4K | 18.2K | 37.6K |
| Sayer Kevin RExecutive Chair, Director · 22 transactions | -7.7% | 302.2K | 382.4K | — | 287.3K |
| Sylvain Jereme MEVP, Chief Financal Officer · 25 transactions | +106.4% | 150.4K | 153.4K | — | 49.4K |
| Altman Steven RDirector · 16 transactions | +55.7% | 132.9K | 13.2K | — | 9.6K |
| Stern SadieEVP Chief People & Culture Off · 33 transactions | +57.4% | 128.6K | 133.8K | — | 58.3K |
| Pacelli Steven RobertEVP Managing Director Dexcom V · 3 transactions | -1% | 124.8Kas of Nov 2023 | — | — | 1.2K |
| Foletta Mark GDirector · 21 transactions | +40.3% | 116.2K | 15.0K | — | 18.3K |
| Brown Michael JonEVP Chief Legal Compliance Off · 29 transactions | +64.1% | 101.5K | 120.6K | — | 49.6K |
| Coleman JonEVP, Chief Commercial Officer · 5 transactions | — | 95.5K | 112.6K | — | 9.8K |
| Collins Richard AlexanderDirector · 11 transactions | +61% | 85.9K | 13.3K | — | 6.9K |
| Augustinos NicholasDirector · 12 transactions | +48.2% | 82.5K | 13.2K | — | 10.3K |
| Lawver Teri LEVP Chief Commercial Officer · 2 transactions | +46.9% | 66.6Kas of Mar 2024 | 26.1K | — | 4.8K |
| Regan Barry J.EVP Operations · 3 transactions | -11.8% | 58.5Kas of Dec 2023 | — | — | 2.0K |
| Flynn Paul REVP Global Revenue · 1 transaction | -6.1% | 48.9Kas of Dec 2023 | — | — | — |
| Selvaraj Shelly RamasamySVP Chief Information Officer · 1 transaction | -3.8% | 48.5Kas of Sep 2023 | — | — | — |
| Naganathan GirishEVP Chief Technology Officer · 1 transaction | -5% | 47.7Kas of Nov 2023 | — | — | 2.7K |
| Dolan Matthew VincentEVP, Strategy & Corporate Dev · 10 transactions | +25.2% | 42.0Kas of Jan 2025 | 24.8K | — | 16.6K |
| Dahut Karen MDirector · 5 transactions | — | 35.6Kas of May 2025 | 2.6K | — | — |
| Heller Bridgette PDirector · 11 transactions | +25.7% | 30.6K | 13.2K | — | 7.0K |
| Malady KyleDirector · 4 transactions | +81.9% | 28.2K | 13.4K | — | 667 |
| Kahn BarbaraDirector · 2 transactions | -13.5% | 25.5Kas of May 2024 | — | — | — |
| Driscoll RimmaDirector · 3 transactions | +332.1% | 17.3K | 13.3K | — | — |
| Ashley Euan A.Director · 2 transactions | — | 12.7K | 12.7K | — | — |
| Gala Renee DDirector · 3 transactions | — | 12.5K | 12.5K | — | — |
| Osterloh Albert Frederick IVDirector · 2 transactions | — | 8.7K | 8.7K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -553.8K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.