19 insiders reported 122 Form 4 transactions for DEXCOM INC (DXCM) over the past 18 months (most recent 2026-09-16). Recent activity: AUGUSTINOS NICHOLAS (Director) Sell 1,550 shares, Brown Michael Jon (EVP Chief Legal Compliance Off) Sell 1,700 shares, AUGUSTINOS NICHOLAS (Director) Sell 6,539 shares, Sylvain Jereme M (EVP, Chief Financal Officer) Sell 3,638 shares, Boehnlein Glenn S (Director) Buy 5,841 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-16 | AUGUSTINOS NICHOLAS | Director | Sell | 1,550 | $130,231 |
| 2026-09-16 | Brown Michael Jon | EVP Chief Legal Compliance Off | Sell | 1,700 | $142,868 |
| 2026-09-16 | AUGUSTINOS NICHOLAS | Director | Sell | 6,539 | $549,538 |
| 2026-09-14 | Sylvain Jereme M | EVP, Chief Financal Officer | Sell | 3,638 | $302,936 |
| 2026-09-10 | Boehnlein Glenn S | Director | Buy | 5,841 | $0 |
| 2026-08-28 | Stern Sadie | EVP Chief People & Culture Off | Sell | 2,565 | $226,669 |
| 2026-08-25 | Sylvain Jereme M | EVP, Chief Financal Officer | Sell | 1,451 | $133,985 |
| 2026-08-25 | Leach Jacob Steven | President, CEO, and Director | Sell | 1,451 | $133,985 |
| 2026-08-25 | Stern Sadie | EVP Chief People & Culture Off | Sell | 1,451 | $133,985 |
| 2026-08-25 | Brown Michael Jon | EVP Chief Legal Compliance Off | Sell | 1,451 | $133,985 |
| 2026-08-24 | SAYER KEVIN R | Executive Chair | Sell | 97 | $8,867 |
| 2026-08-24 | SAYER KEVIN R | Executive Chair | Sell | 7,351 | $667,332 |
| 2026-08-24 | SAYER KEVIN R | Executive Chair | Sell | 19,308 | $1.7M |
| 2026-08-17 | Brown Michael Jon | EVP Chief Legal Compliance Off | Sell | 1,700 | $156,281 |
| 2026-08-13 | AUGUSTINOS NICHOLAS | Director | Sell | 1,075 | $0 |
| 2026-08-13 | Heller Bridgette P | Director | Sell | 1,012 | $89,349 |
| 2026-08-04 | FOLETTA MARK G | Director | Sell | 2,000 | $160,000 |
| 2026-08-04 | FOLETTA MARK G | Director | Sell | 2,000 | $170,640 |
| 2026-07-21 | SAYER KEVIN R | Executive Chair | Sell | 26,756 | $2.0M |
| 2026-07-16 | Brown Michael Jon | EVP Chief Legal Compliance Off | Sell | 1,700 | $126,514 |
| 2026-07-07 | SAYER KEVIN R | Executive Chair | Sell | 26,756 | $1.9M |
| 2026-06-17 | FOLETTA MARK G | Director | Sell | 3,801 | $281,654 |
| 2026-06-17 | FOLETTA MARK G | Director | Sell | 199 | $14,889 |
| 2026-06-17 | Brown Michael Jon | EVP Chief Legal Compliance Off | Sell | 1,700 | $128,435 |
| 2026-06-05 | Coleman Jon | EVP, Chief Commercial Officer | Sell | 4,912 | $358,576 |
Source: SEC Form 4 filings · as of 2026-09-16