InsiderSource
DXCM

DEXCOM INC

SEC CIK 1093557
$75.37 +6.4% · 90 days
90-day buys
$0
0 open-market
90-day sells
$3.03M
7 open-market
Net insider flow
−$3.03M
Net selling
Filings shown
26
Most recent
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At a glance

Over the last 90 days, insiders at DXCM have sold a net $3.03M of stock (0 open-market buys vs 7 sells).

Largest recent trade: Sayer Kevin R sold $1.93M of DXCM, trimming their stake 7%.

Most active filer: Brown Michael Jon, with 4 transactions among the recent filings shown.

2 recent trades in DXCM were disclosed by members of the U.S. Senate under the STOCK Act — listed below.

Insider transaction history

Form 4 filings for DXCM, newest first
View on SEC EDGAR ↗
DXCM
DEXCOM INC
Sell Coleman Jon · EVP, Chief Commercial Officer · Open-market sale · filed 1w ago ΔOwn −4.9%

Coleman Jon sold $364.1K of DXCM, trimming their stake 5%.

−$364.1K
4,911 sh @ $74
DXCM
DEXCOM INC
Sell Coleman Jon · EVP, Chief Commercial Officer · Open-market sale · filed 1w ago ΔOwn −4.7%

Coleman Jon sold $358.6K of DXCM, trimming their stake 5%.

−$358.6K
4,912 sh @ $73
DXCM
DEXCOM INC
Grant/award Malady Kyle · Director · Grant/award · filed 1w ago ΔOwn +25%
+$0
5,575 sh
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DXCM
DEXCOM INC
Tax withholding Leach Jacob Steven · Director, President, CEO, and Director · Tax withholding · filed 2w ago ΔOwn −0.3%
−$104.3K
1,451 sh @ $72
DXCM
DEXCOM INC
Tax withholding Brown Michael Jon · EVP Chief Legal Compliance Off · Tax withholding · filed 2w ago ΔOwn −1.3%
−$104.3K
1,451 sh @ $72
DXCM
DEXCOM INC
Tax withholding Sylvain Jereme M · EVP, Chief Financal Officer · Tax withholding · filed 2w ago ΔOwn −0.9%
−$104.3K
1,451 sh @ $72
DXCM
DEXCOM INC
Tax withholding Stern Sadie · EVP Chief People & Culture Off · Tax withholding · filed 2w ago ΔOwn −1.1%
−$104.3K
1,451 sh @ $72
DXCM
DEXCOM INC
Tax withholding Coleman Jon · EVP, Chief Commercial Officer · Tax withholding · filed 2w ago ΔOwn −6.5%
−$529.3K
7,362 sh @ $72
DXCM
DEXCOM INC
Sell SAYER KEVIN R · Director, Executive Chair · Open-market sale · filed 2w ago ΔOwn −6.5%

Sayer Kevin R sold $1.93M of DXCM, trimming their stake 7%.

−$1.93M
26,759 sh @ $72
DXCM
DEXCOM INC
Sell Brown Michael Jon · EVP, Chief Legal Officer · Open-market sale · filed 3w ago ΔOwn −1.5%

Brown Michael Jon sold $101.8K of DXCM, trimming their stake 2%.

−$101.8K
1,700 sh @ $60
DXCM
DEXCOM INC
Sell Heller Bridgette P · Director · Open-market sale · filed May 14, 2026 ΔOwn −3.9%

Heller Bridgette P sold $60.7K of DXCM, trimming their stake 4%.

−$60.7K
1,012 sh @ $60
DXCM
DEXCOM INC
Sell Brown Michael Jon · EVP, Chief Legal Officer · Open-market sale · filed Apr 16, 2026 ΔOwn −1.5%

Brown Michael Jon sold $107.2K of DXCM, trimming their stake 2%.

−$107.2K
1,700 sh @ $63
DXCM
DEXCOM INC
Sell Brown Michael Jon · EVP, Chief Legal Officer · Open-market sale · filed Mar 18, 2026 ΔOwn −1.5%

Brown Michael Jon sold $110.2K of DXCM, trimming their stake 1%.

−$110.2K
1,700 sh @ $65

Congress trading in DXCM

Disclosed by U.S. Senators under the STOCK Act
All Congress trades →
May 7, 2026 Tina Smith Sale (Full) $100,001 - $250,000
Apr 29, 2026 Tina Smith Sale (Partial) $100,001 - $250,000
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About DXCM insider activity

This page tracks every recent Form 4 filed for DEXCOM INC with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.

The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.

Frequently asked questions

How often is DXCM insider data updated?

Continuously. We read from SEC EDGAR, so new Form 4 filings for DEXCOM INC usually appear here within minutes of being accepted by the SEC.

What does "net insider flow" mean?

It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.

Why do some rows show grants or option exercises instead of buys?

Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.

Is this investment advice?

No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.