Insider txns (12m)
12
Stock / equity
DXCM DEXCOM INC
- Company
- DEXCOM INC
- Security
- Equity
- Size, estimated from filings
- Large cap ($10B – $200B)
- Insiders on record
- 6
- Members of Congress
- 2
- Latest trade on record
- October 15, 2026
DXCM (DEXCOM INC) has 12 disclosed insider transactions from 6 insiders in the last 12 months (0 open-market buys, 11 sales, about $2.3M at reported prices) and 3 congressional trades from 2 members of Congress. The most recent disclosure was filed October 19, 2026.
Open-market buys / sales
0 / 11
Congress trades (12m)
3
Distinct filers (12m)
8
Share price
Price and chart by TradingView for DEXCOM INC. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.
DXCM in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
BoughtSold
7 people account for the disclosed buying and selling in DXCM over the last 12 months; the most active is AUGUSTINOS NICHOLAS with $680K.
Prices insiders traded at
What price did insiders buy and sell at? Each marker is one open-market trade at the share price reported on its Form 4.
▲ Bought▼ SoldAverage reported price that day
Insiders reported 7 open-market trades in DXCM since Aug 27, 2026, at prices from $83.27 to $88.37; the most recent was a sale at $85.48 on Oct 15, 2026. These are the prices on the filings, not adjusted for stock splits, and not a market price series.
Insider holdings over time
Is an insider building or unwinding a position? Shares held directly after each filing.
Brown Michael JonStern Sadie
Brown Michael Jon reported 98,185 shares held after the latest filing, against 101,502 at the first on record.
Lobbying spend by quarter
How much has DEXCOM INC reported spending on federal lobbying?
DEXCOM INC reported $2.3M in lobbying over the last eight quarters, from filings matched by exact company name.
Insiders trading DXCM
Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns.
| Insider | Role | Rows | Bought | Sold | Value bought | Value sold | Latest |
|---|---|---|---|---|---|---|---|
| Brown Michael Jon | EVP Chief Legal Compliance Off | 3 | 0 | 3 | — | $422K | October 15, 2026 |
| Stern Sadie | EVP Chief People & Culture Off | 3 | 0 | 3 | — | $582K | September 28, 2026 |
| AUGUSTINOS NICHOLAS | Director | 2 | 0 | 2 | — | $680K | September 15, 2026 |
| Sylvain Jereme M | EVP, Chief Financal Officer | 2 | 0 | 2 | — | $437K | September 10, 2026 |
| Boehnlein Glenn S | Director | 1 | 0 | 0 | — | — | September 10, 2026 |
| Leach Jacob Steven | President, CEO, and Director | 1 | 0 | 1 | — | $134K | August 22, 2026 |
What kind of transactions these are 3 Form 4 codes
| Code | Meaning | Rows | Shares | Value at reported prices |
|---|---|---|---|---|
| S | Open-market sale | 7 | 20,257 | $1.7M |
| F | Shares withheld for tax | 4 | 5,804 | $536K |
| A | Grant or award | 1 | 5,841 | — |
What each code means: Form 4 transaction codes.
Members of Congress trading DXCM
Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| Tina Smith | Senator (MN), Democrat | 2 | 0 | 2 | $200K–$500K | May 7, 2026 |
| John Boozman | Senator (AR), Republican | 1 | 1 | 0 | $1,001–$15K | January 26, 2026 |
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Brown Michael Jon | Sell S | October 15, 2026 | October 19, 2026 | 4d | 1,700 | $85 | $145K | 10b5-1 plan | Form 4 ↗ | |
| Stern Sadie | Sell S | September 28, 2026 | September 30, 2026 | 2d | 2,565 | $86 | $221K | 10b5-1 plan | Form 4 ↗ | |
| Brown Michael Jon | Sell S | September 15, 2026 | September 16, 2026 | 1d | 1,700 | $84 | $143K | 10b5-1 plan | Form 4 ↗ | |
| AUGUSTINOS NICHOLAS | Sell S | September 15, 2026 | September 16, 2026 | 1d | 6,539 | $84 | $550K | 10b5-1 planindirect | Form 4 ↗ | |
| AUGUSTINOS NICHOLAS | Sell S | September 14, 2026 | September 16, 2026 | 2d | 1,550 | $84 | $130K | 10b5-1 planindirect | Form 4 ↗ | |
| Sylvain Jereme M | Sell S | September 10, 2026 | September 14, 2026 | 4d | 3,638 | $83 | $303K | 10b5-1 plan | Form 4 ↗ | |
| Boehnlein Glenn S | Other A | September 10, 2026 | September 10, 2026 | 0d | 5,841 | — | — | Form 4 ↗ | ||
| Stern Sadie | Sell S | August 27, 2026 | August 28, 2026 | 1d | 2,565 | $88 | $227K | 10b5-1 plan | Form 4 ↗ | |
| Stern Sadie | Sell F | August 22, 2026 | August 25, 2026 | 3d | 1,451 | $92 | $134K | Form 4 ↗ | ||
| Brown Michael Jon | Sell F | August 22, 2026 | August 25, 2026 | 3d | 1,451 | $92 | $134K | Form 4 ↗ | ||
| Sylvain Jereme M | Sell F | August 22, 2026 | August 25, 2026 | 3d | 1,451 | $92 | $134K | Form 4 ↗ | ||
| Leach Jacob Steven | Sell F | August 22, 2026 | August 25, 2026 | 3d | 1,451 | $92 | $134K | Form 4 ↗ |
Congressional trades
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Tina Smith | Sell | April 29, 2026 | May 10, 2026 | 11d | — | — | $100K–$250K | spouse | Senate PTR ↗ | |
| Tina Smith | Sell | May 7, 2026 | May 10, 2026 | 3d | — | — | $100K–$250K | spouse | Senate PTR ↗ | |
| John Boozman | Buy | January 26, 2026 | February 15, 2026 | 20d | — | — | $1,001–$15K | joint | Senate PTR ↗ |
Related stocks
Tickers traded by the same people who traded DXCM, by number of filers in common. It shows overlap in public filings and nothing else.
- UBER Uber Technologies, Inc. Common Stock 1 filer in common
- ANET Arista Networks, Inc. Common Stock 1 filer in common
- META Meta Platforms, Inc. - Class A Common Stock 1 filer in common
- MU Micron Technology, Inc. - Common Stock 1 filer in common
- NFLX Netflix, Inc. - Common Stock 1 filer in common
- ADBE Adobe Inc. - Common Stock 1 filer in common
- CRM Salesforce, Inc. Common Stock 1 filer in common
- LLY Eli Lilly and Company Common Stock 1 filer in common
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- How to read a congressional trade report Owner tells you whose asset it was: the member, the spouse, a dependent child, or held jointly.
- Why congressional trade amounts are ranges There are ten ranges; the lowest is $1,001–$15,000 and the highest is over $50,000,000.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| Senate eFD, periodic transaction reports | 2 | 3 | February 15, 2026 | May 10, 2026 | Senate eFD search |
| SEC EDGAR, Form 4 | 11 | 12 | August 25, 2026 | October 19, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.