DXCM · Insider Trading
DexCom, Inc.
Every open-market purchase and sale reported by DXCM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-16 | Michael Jon Brown | EVP Chief Legal Compliance Off | Sell | — | — |
| 2026-09-16 | NICHOLAS AUGUSTINOS | Director | Sell | — | — |
| 2026-09-14 | Jereme M Sylvain | EVP, Chief Financal Officer | Sell | — | — |
| 2026-09-10 | Glenn S Boehnlein | Director | A | — | — |
| 2026-08-28 | Sadie Stern | EVP Chief People & Culture Off | Sell | — | — |
| 2026-08-25 | Sadie Stern | EVP Chief People & Culture Off | F | — | — |
| 2026-08-25 | Jereme M Sylvain | EVP, Chief Financal Officer | F | — | — |
| 2026-08-25 | Jacob Steven Leach | President, CEO, and Director | F | — | — |
| 2026-08-25 | Michael Jon Brown | EVP Chief Legal Compliance Off | F | — | — |
| 2026-08-24 | KEVIN R SAYER | Executive Chair | Sell | — | — |
| 2026-08-17 | Michael Jon Brown | EVP Chief Legal Compliance Off | Sell | — | — |
| 2026-08-13 | NICHOLAS AUGUSTINOS | Director | G | — | — |
| 2026-08-13 | Bridgette P Heller | Director | Sell | — | — |
| 2026-08-04 | MARK G FOLETTA | Director | Sell | — | — |
| 2026-07-21 | KEVIN R SAYER | Executive Chair | Sell | — | — |
| 2026-07-16 | Michael Jon Brown | EVP Chief Legal Compliance Off | Sell | — | — |
| 2026-07-07 | KEVIN R SAYER | Executive Chair | Sell | — | — |
| 2026-06-17 | Michael Jon Brown | EVP Chief Legal Compliance Off | Sell | — | — |
| 2026-06-17 | MARK G FOLETTA | Director | Sell | — | — |
| 2026-06-05 | Jon Coleman | EVP, Chief Commercial Officer | Sell | — | — |
| 2026-06-01 | RENEE D GALA | Director | A | — | — |
| 2026-06-01 | Richard Alexander Collins | Director | A | — | — |
| 2026-06-01 | Euan A. Ashley | Director | A | — | — |
| 2026-06-01 | Rimma Driscoll | Director | A | — | — |
| 2026-06-01 | Albert Frederick Osterloh IV | Director | A | — | — |
| 2026-06-01 | Bridgette P Heller | Director | A | — | — |
| 2026-06-01 | MARK G FOLETTA | Director | A | — | — |
| 2026-06-01 | NICHOLAS AUGUSTINOS | Director | A | — | — |
| 2026-06-01 | Kyle Malady | Director | A | — | — |
| 2026-06-01 | STEVEN R ALTMAN | Director | A | — | — |
| 2026-05-27 | Jon Coleman | EVP, Chief Commercial Officer | F | — | — |
| 2026-05-27 | Sadie Stern | EVP Chief People & Culture Off | F | — | — |
| 2026-05-27 | Jereme M Sylvain | EVP, Chief Financal Officer | F | — | — |
| 2026-05-27 | Michael Jon Brown | EVP Chief Legal Compliance Off | F | — | — |
| 2026-05-27 | Jacob Steven Leach | President, CEO, and Director | F | — | — |
| 2026-05-26 | KEVIN R SAYER | Executive Chair | Sell | — | — |
| 2026-05-19 | Michael Jon Brown | EVP, Chief Legal Officer | Sell | — | — |
| 2026-05-14 | Bridgette P Heller | Director | Sell | — | — |
| 2026-05-11 | STEVEN R ALTMAN | Director | G | — | — |
| 2026-05-11 | MARK G FOLETTA | Director | G | — | — |
| 2026-05-11 | Richard Alexander Collins | Director | G | — | — |
| 2026-05-11 | NICHOLAS AUGUSTINOS | Director | G | — | — |
| 2026-04-16 | Michael Jon Brown | EVP, Chief Legal Officer | Sell | — | — |
| 2026-03-18 | Michael Jon Brown | EVP, Chief Legal Officer | Sell | — | — |
| 2026-03-10 | Jon Coleman | EVP, Chief Commercial Officer | A | — | — |
| 2026-03-10 | Jacob Steven Leach | President, CEO, and Director | MIXED | — | — |
| 2026-03-10 | Sadie Stern | EVP, Chief HR Officer | MIXED | — | — |
| 2026-03-10 | Michael Jon Brown | EVP, Chief Legal Officer | MIXED | — | — |
| 2026-03-10 | Jereme M Sylvain | EVP, Chief Financal Officer | MIXED | — | — |
| 2026-03-10 | KEVIN R SAYER | Executive Chair | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 2,241,911 | — |
| — | Executive Chairman | 493,056 | — |
| — | President, CEO, and Director | 466,204 | — |
| — | Director | 380,545 | — |
| — | Director | 359,833 | — |
| — | Executive Chair | 302,214 | — |
| — | EVP Global Business Services I | 208,023 | — |
| — | EVP, Chief Financal Officer | 146,828 | — |
| — | EVP Chief People & Culture Off | 126,043 | — |
| — | EVP Managing Director Dexcom V | 124,775 | — |
| — | Director | 123,210 | — |
| — | EVP, Chief Commercial Officer | 100,361 | — |
| — | EVP Chief Legal Compliance Off | 99,885 | — |
| — | EVP Regulatory Strategy Clinic | 89,515 | — |
| — | General Manager, EMEA | 84,034 | — |
| — | CTO | 75,833 | — |
| — | Director | 69,232 | — |
| — | EVP Chief Commercial Officer | 66,641 | — |
| — | Director | 63,348 | — |
| — | EVP Operations | 58,469 | — |
| — | Director | 57,183 | — |
| — | SVP, CFO | 54,949 | — |
| — | EVP Operations | 54,468 | — |
| — | Director | 52,820 | — |
| — | EVP Global Revenue | 48,949 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the DXCM quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.