DXCM
DexCom Inc
NASDAQ: DXCM · HEALTHCARE · MEDICAL DEVICES
$78.62
+0.08% today
Updated 2026-10-28
Market cap
$29.67B
P/E ratio
31.20
P/S ratio
5.97x
EPS (TTM)
$2.52
Dividend yield
—
52W range
$54 – $93
Volume
4.2M
DexCom Inc (DXCM) Insider transactions
Net insider activity
Net buying (191,644 shares)
Buy transactions
30
Sell transactions
69
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-10-15 | BROWN, MICHAEL JON | EVP Chief Legal Compliance Off | S | 1,700 | $85.48 | $145316.00 |
| 2026-09-28 | STERN, SADIE | EVP Chief People & Culture Off | Sale | 2,565 | $86.15 | $220974.75 |
| 2026-09-15 | BROWN, MICHAEL JON | EVP Chief Legal Compliance Off | Sale | 1,700 | $84.04 | $142868.00 |
| 2026-09-15 | AUGUSTINOS, NICHOLAS | Director | Sale | 6,539 | $84.04 | $549537.56 |
| 2026-09-14 | AUGUSTINOS, NICHOLAS | Director | Sale | 1,550 | $84.02 | $130231.00 |
| 2026-09-10 | SYLVAIN, JEREME M | EVP, Chief Financal Officer | Sale | 3,638 | $83.27 | $302936.26 |
| 2026-09-10 | BOEHNLEIN, GLENN S | Director | Buy | 5,841 | — | — |
| 2026-08-27 | STERN, SADIE | EVP Chief People & Culture Off | Sale | 2,565 | $88.37 | $226669.05 |
| 2026-08-22 | SYLVAIN, JEREME M | EVP, Chief Financal Officer | Sale | 1,451 | $92.34 | $133985.34 |
| 2026-08-22 | STERN, SADIE | EVP Chief People & Culture Off | Sale | 1,451 | $92.34 | $133985.34 |
| 2026-08-22 | LEACH, JACOB STEVEN | Director, President, CEO, and Director | Sale | 1,451 | $92.34 | $133985.34 |
| 2026-08-22 | BROWN, MICHAEL JON | EVP Chief Legal Compliance Off | Sale | 1,451 | $92.34 | $133985.34 |
| 2026-08-20 | SAYER, KEVIN R | Director, Executive Chair | Sale | 19,308 | $89.71 | $1.73M |
| 2026-08-20 | SAYER, KEVIN R | Director, Executive Chair | Sale | 7,351 | $90.78 | $667331.87 |
| 2026-08-20 | SAYER, KEVIN R | Director, Executive Chair | Sale | 97 | $91.41 | $8866.77 |
| 2026-08-14 | BROWN, MICHAEL JON | EVP Chief Legal Compliance Off | Sale | 1,700 | $91.93 | $156281.00 |
| 2026-08-12 | HELLER, BRIDGETTE P | Director | Sale | 1,012 | $88.29 | $89349.48 |
| 2026-08-12 | AUGUSTINOS, NICHOLAS | Director | Sale | 1,075 | — | — |
| 2026-08-03 | FOLETTA, MARK G | Director | Sale | 2,000 | $85.32 | $170640.00 |
| 2026-07-31 | FOLETTA, MARK G | Director | Sale | 2,000 | $80.00 | $160000.00 |
| 2026-07-20 | SAYER, KEVIN R | Director, Executive Chair | Sale | 26,756 | $76.32 | $2.04M |
| 2026-07-15 | BROWN, MICHAEL JON | EVP Chief Legal Compliance Off | Sale | 1,700 | $74.42 | $126514.00 |
| 2026-07-06 | SAYER, KEVIN R | Director, Executive Chair | Sale | 26,756 | $72.00 | $1.93M |
| 2026-06-15 | FOLETTA, MARK G | Director | Sale | 3,801 | $74.10 | $281650.68 |
| 2026-06-15 | FOLETTA, MARK G | Director | Sale | 199 | $74.82 | $14888.92 |
| 2026-06-15 | BROWN, MICHAEL JON | EVP Chief Legal Compliance Off | Sale | 1,700 | $75.55 | $128435.00 |
| 2026-06-04 | COLEMAN, JON | EVP, Chief Commercial Officer | Sale | 4,911 | $74.13 | $364052.43 |
| 2026-06-03 | COLEMAN, JON | EVP, Chief Commercial Officer | Sale | 4,912 | $73.00 | $358576.00 |
| 2026-05-28 | OSTERLOH, ALBERT FREDERICK IV | Director | Buy | 1,630 | — | — |
| 2026-05-28 | MALADY, KYLE | Director | Buy | 5,575 | — | — |
| 2026-05-28 | HELLER, BRIDGETTE P | Director | Buy | 5,575 | — | — |
| 2026-05-28 | GALA, RENEE D | Director | Buy | 5,605 | — | — |
| 2026-05-28 | FOLETTA, MARK G | Director | Buy | 6,331 | — | — |
| 2026-05-28 | DRISCOLL, RIMMA | Director | Buy | 5,605 | — | — |
| 2026-05-28 | COLLINS, RICHARD ALEXANDER | Director | Buy | 5,605 | — | — |
| 2026-05-28 | AUGUSTINOS, NICHOLAS | Director | Buy | 5,575 | — | — |
| 2026-05-28 | ASHLEY, EUAN A. | Director | Buy | 5,565 | — | — |
| 2026-05-28 | ALTMAN, STEVEN R | Director | Buy | 5,565 | — | — |
| 2026-05-22 | SYLVAIN, JEREME M | EVP, Chief Financal Officer | Sale | 1,451 | $71.90 | $104326.90 |
| 2026-05-22 | STERN, SADIE | EVP Chief People & Culture Off | Sale | 1,451 | $71.90 | $104326.90 |
| 2026-05-22 | LEACH, JACOB STEVEN | Director, President, CEO, and Director | Sale | 1,451 | $71.90 | $104326.90 |
| 2026-05-22 | COLEMAN, JON | EVP, Chief Commercial Officer | Sale | 7,362 | $71.90 | $529327.80 |
| 2026-05-22 | BROWN, MICHAEL JON | EVP Chief Legal Compliance Off | Sale | 1,451 | $71.90 | $104326.90 |
| 2026-05-21 | SAYER, KEVIN R | Director, Executive Chair | Sale | 26,759 | $72.00 | $1.93M |
| 2026-05-15 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Sale | 1,700 | $59.91 | $101847.00 |
| 2026-05-12 | HELLER, BRIDGETTE P | Director | Sale | 1,012 | $60.01 | $60730.12 |
| 2026-05-08 | FOLETTA, MARK G | Director | Sale | 5,731 | — | — |
| 2026-05-08 | COLLINS, RICHARD ALEXANDER | Director | Buy | 5,074 | — | — |
| 2026-05-08 | AUGUSTINOS, NICHOLAS | Director | Buy | 5,046 | — | — |
| 2026-05-08 | ALTMAN, STEVEN R | Director | Buy | 5,037 | — | — |
| 2026-04-15 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Sale | 1,700 | $63.04 | $107168.00 |
| 2026-03-16 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Sale | 1,700 | $64.85 | $110245.00 |
| 2026-03-08 | SYLVAIN, JEREME M | EVP, Chief Financal Officer | Buy | 48,774 | — | — |
| 2026-03-08 | SYLVAIN, JEREME M | EVP, Chief Financal Officer | Sale | 18,950 | $68.10 | $1.29M |
| 2026-03-08 | STERN, SADIE | EVP, Chief HR Officer | Buy | 39,019 | — | — |
| 2026-03-08 | STERN, SADIE | EVP, Chief HR Officer | Sale | 17,199 | $68.10 | $1.17M |
| 2026-03-08 | SAYER, KEVIN R | Director, Executive Chair | Buy | 32,749 | — | — |
| 2026-03-08 | SAYER, KEVIN R | Director, Executive Chair | Sale | 32,498 | $68.10 | $2.21M |
| 2026-03-08 | LEACH, JACOB STEVEN | Director, President, CEO, and Director | Buy | 104,516 | — | — |
| 2026-03-08 | LEACH, JACOB STEVEN | Director, President, CEO, and Director | Sale | 19,757 | $68.10 | $1.35M |
| 2026-03-08 | COLEMAN, JON | EVP, Chief Commercial Officer | Buy | 43,897 | — | — |
| 2026-03-08 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Buy | 39,019 | — | — |
| 2026-03-08 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Sale | 23,325 | $68.10 | $1.59M |
| 2026-02-26 | OSTERLOH, ALBERT FREDERICK IV | Director | Buy | 7,061 | — | — |
| 2026-02-12 | HELLER, BRIDGETTE P | Director | Sale | 1,012 | $68.01 | $68826.12 |
| 2026-01-29 | SYLVAIN, JEREME M | EVP, Chief Financal Officer | Buy | 7,123 | — | — |
| 2026-01-29 | SYLVAIN, JEREME M | EVP, Chief Financal Officer | Sale | 2,652 | $73.36 | $194550.72 |
| 2026-01-29 | STERN, SADIE | EVP, Chief HR Officer | Buy | 7,123 | — | — |
| 2026-01-29 | STERN, SADIE | EVP, Chief HR Officer | Sale | 2,656 | $73.36 | $194844.16 |
| 2026-01-29 | SAYER, KEVIN R | Director, Executive Chair | Buy | 71,218 | — | — |
| 2026-01-29 | SAYER, KEVIN R | Director, Executive Chair | Sale | 34,257 | $73.36 | $2.51M |
| 2026-01-29 | LEACH, JACOB STEVEN | Director, President, CEO, and Director | Buy | 8,310 | — | — |
| 2026-01-29 | LEACH, JACOB STEVEN | Director, President, CEO, and Director | Sale | 3,058 | $73.36 | $224334.88 |
| 2026-01-29 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Buy | 7,123 | — | — |
| 2026-01-29 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Sale | 2,653 | $73.36 | $194624.08 |
| 2025-11-14 | COLLINS, RICHARD ALEXANDER | Director | Sale | 2,906 | $59.05 | $171599.30 |
| 2025-11-12 | HELLER, BRIDGETTE P | Director | Sale | 1,012 | $58.07 | $58766.84 |
| 2025-11-10 | LEACH, JACOB STEVEN | President & COO | Buy | 15,700 | $54.98 | $863138.90 |
| 2025-11-10 | LEACH, JACOB STEVEN | President & COO | Buy | 2,500 | $55.43 | $138563.00 |
| 2025-11-10 | COLLINS, RICHARD ALEXANDER | Director | Sale | 3,948 | $55.17 | $217811.16 |
| 2025-10-24 | ASHLEY, EUAN A. | Director | Buy | 7,166 | — | — |
| 2025-09-05 | MALADY, KYLE | Director | Sale | 667 | $80.86 | $53933.62 |
| 2025-09-04 | STERN, SADIE | EVP, Chief HR Officer | Sale | 1,466 | $80.00 | $117280.00 |
| 2025-09-02 | SYLVAIN, JEREME M | EVP, Chief Financal Officer | Sale | 4,824 | $74.17 | $357796.08 |
| 2025-08-15 | FOLETTA, MARK G | Director | Sale | 2,555 | $81.02 | $207002.52 |
| 2025-08-15 | FOLETTA, MARK G | Director | Sale | 195 | $81.54 | $15900.30 |
| 2025-08-15 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Sale | 500 | $80.29 | $40145.00 |
| 2025-07-28 | STERN, SADIE | EVP, Chief HR Officer | Sale | 1,466 | $88.99 | $130459.34 |
| 2025-07-15 | FOLETTA, MARK G | Director | Sale | 2,742 | $85.17 | $233528.46 |
| 2025-07-15 | FOLETTA, MARK G | Director | Sale | 8 | $86.03 | $688.24 |
| 2025-07-15 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Sale | 500 | $86.03 | $43015.00 |
| 2025-06-26 | STERN, SADIE | EVP, Chief HR Officer | Sale | 1,466 | $85.06 | $124697.96 |
| 2025-06-16 | FOLETTA, MARK G | Director | Sale | 2,750 | $83.13 | $228604.75 |
| 2025-06-16 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Sale | 500 | $82.80 | $41400.00 |
| 2025-06-16 | AUGUSTINOS, NICHOLAS | Director | Sale | 3,672 | $82.80 | $304041.60 |
| 2025-06-13 | AUGUSTINOS, NICHOLAS | Director | Sale | 2,618 | $81.69 | $213864.42 |
| 2025-05-27 | STERN, SADIE | EVP, Chief HR Officer | Sale | 6,184 | $85.11 | $526318.38 |
| 2025-05-23 | BROWN, MICHAEL JON | EVP, Chief Legal Officer | Sale | 10,000 | $84.28 | $842849.00 |
| 2025-05-22 | COLEMAN, JON | EVP, Chief Commercial Officer | Buy | 68,738 | — | — |
| 2025-05-08 | TOPOL, ERIC | Director | Sale | 2,618 | — | — |
Frequently asked questions
Are DXCM insiders buying or selling?
Over the transactions on record, DXCM insiders have been net sellers, with about $28.52M in stock sold across 69 sales, against 2 open-market purchases.
Does insider selling at DXCM mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which DXCM insiders are selling the most?
Recent selling is concentrated in a few names. SAYER, KEVIN R accounts for the largest share on record, with about $13.03M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.