DexCom, Inc.
DexCom, Inc. (DXCM) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · DXCM · as of Jun 8, 2026
Activity summary
Buy transactions
2
P-Purchase only
Sell transactions
21
12 Months
Buy/Sell ratio
0.10
Buy/Sell (by trades)
Overall sentiment
DexCom, Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
DXCM insider buying and selling by quarter
DXCM insider selling · DXCM insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · DXCM ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
DXCM executive sell shares · DXCM board member insider trading · DXCM insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Jun 3, 2026 | Coleman Jon EVP, Chief Commercial Officer | Sale | 4,912 | $359K | Form 4 |
| Jun 4, 2026 | Coleman Jon EVP, Chief Commercial Officer | Sale | 4,911 | $364K | Form 4 |
| May 28, 2026 | ALTMAN STEVEN R Director | Award | 5,565 | — | Form 4 |
| May 28, 2026 | Malady Kyle Director | Award | 5,575 | — | Form 4 |
| May 28, 2026 | AUGUSTINOS NICHOLAS Director | Award | 5,575 | — | Form 4 |
| May 28, 2026 | FOLETTA MARK G Director | Award | 6,331 | — | Form 4 |
| May 28, 2026 | Heller Bridgette P Director | Award | 5,575 | — | Form 4 |
| May 28, 2026 | Osterloh Albert Frederick IV Director | Award | 1,630 | — | Form 4 |
| May 28, 2026 | Driscoll Rimma Director | Award | 5,605 | — | Form 4 |
| May 28, 2026 | Ashley Euan A. Director | Award | 5,565 | — | Form 4 |
| May 28, 2026 | Collins Richard Alexander Director | Award | 5,605 | — | Form 4 |
| May 28, 2026 | GALA RENEE D Director | Award | 5,605 | — | Form 4 |
| May 22, 2026 | Leach Jacob Steven President, CEO, and Director | Other | 1,451 | $104K | Form 4 |
| May 22, 2026 | Brown Michael Jon EVP Chief Legal Compliance Off | Other | 1,451 | $104K | Form 4 |
| May 22, 2026 | Sylvain Jereme M EVP, Chief Financal Officer | Other | 1,451 | $104K | Form 4 |
| May 22, 2026 | Stern Sadie EVP Chief People & Culture Off | Other | 1,451 | $104K | Form 4 |
| May 22, 2026 | Coleman Jon EVP, Chief Commercial Officer | Other | 7,362 | $529K | Form 4 |
| May 21, 2026 | SAYER KEVIN R Executive Chair · Director | Sale | 26,759 | $1.93M⚡ | Form 4 |
| May 15, 2026 | Brown Michael Jon EVP, Chief Legal Officer | Sale | 1,700 | $102K | Form 4 |
| May 12, 2026 | Heller Bridgette P Director | Sale | 1,012 | $61K | Form 4 |
| May 8, 2026 | AUGUSTINOS NICHOLAS Director | Gift | 5,046 | — | Form 4 |
| May 8, 2026 | AUGUSTINOS NICHOLAS Director | Gift | 5,046 | — | Form 4 |
| May 8, 2026 | Collins Richard Alexander Director | Gift | 5,074 | — | Form 4 |
| May 8, 2026 | Collins Richard Alexander Director | Gift | 5,074 | — | Form 4 |
| May 8, 2026 | FOLETTA MARK G Director | Gift | 5,731 | — | Form 4 |
Coleman Jon
EVP, Chief Commercial Officer
Date
Jun 3
Shares
4,912
Price
$73.00
Value
$359K
Coleman Jon
EVP, Chief Commercial Officer
Date
Jun 4
Shares
4,911
Price
$74.13
Value
$364K
Leach Jacob Steven
President, CEO, and Director
Date
May 22
Shares
1,451
Price
$71.90
Value
$104K
Brown Michael Jon
EVP Chief Legal Compliance Off
Date
May 22
Shares
1,451
Price
$71.90
Value
$104K
Sylvain Jereme M
EVP, Chief Financal Officer
Date
May 22
Shares
1,451
Price
$71.90
Value
$104K
Stern Sadie
EVP Chief People & Culture Off
Date
May 22
Shares
1,451
Price
$71.90
Value
$104K
Coleman Jon
EVP, Chief Commercial Officer
Date
May 22
Shares
7,362
Price
$71.90
Value
$529K
SAYER KEVIN R
Executive Chair · Director
Date
May 21
Shares
26,759
Price
$72.00
Value
$1.93M ⚡
Brown Michael Jon
EVP, Chief Legal Officer
Date
May 15
Shares
1,700
Price
$59.91
Value
$102K
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About DXCM insider trading
DXCM insider trades
DexCom, Inc. (DXCM) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Brown Michael Jon (EVP Chief Legal Compliance Off), FOLETTA MARK G (Director), Stern Sadie (EVP Chief People & Culture Off). Over the past 12 months, 5 insiders have filed transactions with the SEC. DXCM insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For DexCom, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
DXCM insider trading · 5 questionsThe insiders of DexCom, Inc. (DXCM) include executives and directors such as Brown Michael Jon (EVP Chief Legal Compliance Off), FOLETTA MARK G (Director), Stern Sadie (EVP Chief People & Culture Off), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026