Dexcom (DXCM) — insider trading
Health Care · NASDAQ
Dexcom (DXCM) has 54 reported SEC Form 4 insider transactions in our data, including 25 open-market sales among the most recent 54 (latest 2026-09-28).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-28 | Stern Sadie | Officer (EVP Chief People & Culture Off) | Open-market sale | 2,565 | $86.15 | $221.0K | Form 4 |
| 2026-09-15 | Brown Michael Jon | Officer (EVP Chief Legal Compliance Off) | Open-market sale | 1,700 | $84.04 | $142.9K | Form 4 |
| 2026-09-15 | AUGUSTINOS NICHOLAS | Director | Open-market sale | 6,539 | $84.04 | $549.5K | Form 4 |
| 2026-09-14 | AUGUSTINOS NICHOLAS | Director | Open-market sale | 1,550 | $84.02 | $130.2K | Form 4 |
| 2026-09-10 | Sylvain Jereme M | Officer (EVP, Chief Financal Officer) | Open-market sale | 3,638 | $83.27 | $302.9K | Form 4 |
| 2026-09-10 | Boehnlein Glenn S | Director | Grant / award / vesting | 5,841 | — | $0 | Form 4 |
| 2026-08-27 | Stern Sadie | Officer (EVP Chief People & Culture Off) | Open-market sale | 2,565 | $88.37 | $226.7K | Form 4 |
| 2026-08-22 | Stern Sadie | Officer (EVP Chief People & Culture Off) | Shares withheld for taxes / exercise cost | 1,451 | $92.34 | $134.0K | Form 4 |
| 2026-08-22 | Brown Michael Jon | Officer (EVP Chief Legal Compliance Off) | Shares withheld for taxes / exercise cost | 1,451 | $92.34 | $134.0K | Form 4 |
| 2026-08-22 | Sylvain Jereme M | Officer (EVP, Chief Financal Officer) | Shares withheld for taxes / exercise cost | 1,451 | $92.34 | $134.0K | Form 4 |
| 2026-08-22 | Leach Jacob Steven | Director, Officer (President, CEO, and Director) | Shares withheld for taxes / exercise cost | 1,451 | $92.34 | $134.0K | Form 4 |
| 2026-08-20 | SAYER KEVIN R | Director, Officer (Executive Chair) | Open-market sale | 97 | $91.41 | $8.9K | Form 4 |
| 2026-08-20 | SAYER KEVIN R | Director, Officer (Executive Chair) | Open-market sale | 7,351 | $90.78 | $667.3K | Form 4 |
| 2026-08-20 | SAYER KEVIN R | Director, Officer (Executive Chair) | Open-market sale | 19,308 | $89.71 | $1.73M | Form 4 |
| 2026-08-14 | Brown Michael Jon | Officer (EVP Chief Legal Compliance Off) | Open-market sale | 1,700 | $91.93 | $156.3K | Form 4 |
| 2026-08-12 | Heller Bridgette P | Director | Open-market sale | 1,012 | $88.29 | $89.3K | Form 4 |
| 2026-08-12 | AUGUSTINOS NICHOLAS | Director | Bona fide gift | 1,075 | — | $0 | Form 4 |
| 2026-08-03 | FOLETTA MARK G | Director | Open-market sale | 2,000 | $85.32 | $170.6K | Form 4 |
| 2026-07-31 | FOLETTA MARK G | Director | Open-market sale | 2,000 | $80.00 | $160.0K | Form 4 |
| 2026-07-20 | SAYER KEVIN R | Director, Officer (Executive Chair) | Open-market sale | 26,756 | $76.32 | $2.04M | Form 4 |
| 2026-07-15 | Brown Michael Jon | Officer (EVP Chief Legal Compliance Off) | Open-market sale | 1,700 | $74.42 | $126.5K | Form 4 |
| 2026-07-06 | SAYER KEVIN R | Director, Officer (Executive Chair) | Open-market sale | 26,756 | $72.00 | $1.93M | Form 4 |
| 2026-06-15 | FOLETTA MARK G | Director | Open-market sale | 199 | $74.82 | $14.9K | Form 4 |
| 2026-06-15 | FOLETTA MARK G | Director | Open-market sale | 3,801 | $74.10 | $281.7K | Form 4 |
| 2026-06-15 | Brown Michael Jon | Officer (EVP Chief Legal Compliance Off) | Open-market sale | 1,700 | $75.55 | $128.4K | Form 4 |
| 2026-06-04 | Coleman Jon | Officer (EVP, Chief Commercial Officer) | Open-market sale | 4,911 | $74.13 | $364.1K | Form 4 |
| 2026-06-03 | Coleman Jon | Officer (EVP, Chief Commercial Officer) | Open-market sale | 4,912 | $73.00 | $358.6K | Form 4 |
| 2026-05-28 | GALA RENEE D | Director | Grant / award / vesting | 5,605 | — | $0 | Form 4 |
| 2026-05-28 | Collins Richard Alexander | Director | Grant / award / vesting | 5,605 | — | $0 | Form 4 |
| 2026-05-28 | Ashley Euan A. | Director | Grant / award / vesting | 5,565 | — | $0 | Form 4 |
| 2026-05-28 | Driscoll Rimma | Director | Grant / award / vesting | 5,605 | — | $0 | Form 4 |
| 2026-05-28 | Osterloh Albert Frederick IV | Director | Grant / award / vesting | 1,630 | — | $0 | Form 4 |
| 2026-05-28 | Heller Bridgette P | Director | Grant / award / vesting | 5,575 | — | $0 | Form 4 |
| 2026-05-28 | FOLETTA MARK G | Director | Grant / award / vesting | 6,331 | — | $0 | Form 4 |
| 2026-05-28 | AUGUSTINOS NICHOLAS | Director | Grant / award / vesting | 5,575 | — | $0 | Form 4 |
| 2026-05-28 | Malady Kyle | Director | Grant / award / vesting | 5,575 | — | $0 | Form 4 |
| 2026-05-28 | ALTMAN STEVEN R | Director | Grant / award / vesting | 5,565 | — | $0 | Form 4 |
| 2026-05-22 | Coleman Jon | Officer (EVP, Chief Commercial Officer) | Shares withheld for taxes / exercise cost | 7,362 | $71.90 | $529.3K | Form 4 |
| 2026-05-22 | Stern Sadie | Officer (EVP Chief People & Culture Off) | Shares withheld for taxes / exercise cost | 1,451 | $71.90 | $104.3K | Form 4 |
| 2026-05-22 | Sylvain Jereme M | Officer (EVP, Chief Financal Officer) | Shares withheld for taxes / exercise cost | 1,451 | $71.90 | $104.3K | Form 4 |
| 2026-05-22 | Brown Michael Jon | Officer (EVP Chief Legal Compliance Off) | Shares withheld for taxes / exercise cost | 1,451 | $71.90 | $104.3K | Form 4 |
| 2026-05-22 | Leach Jacob Steven | Director, Officer (President, CEO, and Director) | Shares withheld for taxes / exercise cost | 1,451 | $71.90 | $104.3K | Form 4 |
| 2026-05-21 | SAYER KEVIN R | Director, Officer (Executive Chair) | Open-market sale | 26,759 | $72.00 | $1.93M | Form 4 |
| 2026-05-15 | Brown Michael Jon | Officer (EVP, Chief Legal Officer) | Open-market sale | 1,700 | $59.91 | $101.8K | Form 4 |
| 2026-05-12 | Heller Bridgette P | Director | Open-market sale | 1,012 | $60.01 | $60.7K | Form 4 |
| 2026-05-08 | ALTMAN STEVEN R | Director | Bona fide gift | 5,037 | — | $0 | Form 4 |
| 2026-05-08 | ALTMAN STEVEN R | Director | Bona fide gift | 5,037 | — | $0 | Form 4 |
| 2026-05-08 | FOLETTA MARK G | Director | Bona fide gift | 5,731 | — | $0 | Form 4 |
| 2026-05-08 | FOLETTA MARK G | Director | Bona fide gift | 5,731 | — | $0 | Form 4 |
| 2026-05-08 | Collins Richard Alexander | Director | Bona fide gift | 5,074 | — | $0 | Form 4 |
| 2026-05-08 | Collins Richard Alexander | Director | Bona fide gift | 5,074 | — | $0 | Form 4 |
| 2026-05-08 | AUGUSTINOS NICHOLAS | Director | Bona fide gift | 5,046 | — | $0 | Form 4 |
| 2026-05-08 | AUGUSTINOS NICHOLAS | Director | Bona fide gift | 5,046 | — | $0 | Form 4 |
| 2026-04-15 | Brown Michael Jon | Officer (EVP, Chief Legal Officer) | Open-market sale | 1,700 | $63.04 | $107.2K | Form 4 |
Ask the chat about DXCM's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: Dexcom (DXCM).
Last updated 2026-09-28 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.