Skip to content
Whale Atlas — Follow the signal.
Home
FULL RECORDS
Search insider filingsAll Congress filings
MORE TOOLS
WatchlistGold IntelligencePeopleCharts & technicalsCompany financialsOfficial newsMy saved workspace
YOUR RESEARCH
HomeSearch insider filingsAll Congress filings
More research tools
ExploreGold IntelligencePeopleInvestigate an ideaCharts & technicalsMore evidenceCompany financialsOfficial newsMy research & helpWatchlistMy saved workspaceLearn the basicsHow signals workData & coverage
RESOURCES
LearnMethodologyData sources
Built on public evidence.

Primary sources. Clear reasoning.
No black boxes.

Our approach
Public research workspacev1.0

Loading data…Scanning SEC filings…Checking Congress reports…Following the signal…

HomeSearchCongressWatchlist
© 2026 Whale AtlasFree public-filing research. Not financial advice. By using this site you agree to the Terms of Use.
FAQCompare trackersMethodologyData & correctionsTermsPrivacy
Back to Home
D

DXCM

Nasdaq

DEXCOM INC

Latest disclosureSeptember 30, 2026
Insider score Why 0?
0/ 100
Qualifying buys · 30d
$0

0 purchases · 25 sales

Price by TradingViewDelayed quote from TradingView, for viewing only. It does not power Whale Atlas scores or alerts. If the quote does not load, open the TradingView link.

Insider transactions 54

Limited filing history
All54Buying0Selling25Other29
Filters

Last 30 daysNo qualifying insider buying. Sales: $1.35M by 4 insiders.

29 of 54 trades · April 15, 2026 – September 28, 2026Incomplete history: this shows the filings imported so far, not every filing ever made. Dates are trade dates. Filters affect this table only.

Showing the first 6 of 20 trades on this page.

Award disclosed

Glenn S. Boehnlein

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded September 10, 2026Filed September 10, 2026SEC filing
Tax or exercise withholding

Jacob Steven Leach

President, CEO, and Director

Common Stock

Value context
$133.99K
Reported price
$92.34 / share
Traded August 22, 2026Filed August 25, 2026SEC filing
Tax or exercise withholding

Jereme M. Sylvain

EVP, Chief Financal Officer

Common Stock

Value context
$133.99K
Reported price
$92.34 / share
Traded August 22, 2026Filed August 25, 2026SEC filing
Tax or exercise withholding

Michael Jon Brown

EVP Chief Legal Compliance Off

Common Stock

Value context
$133.99K
Reported price
$92.34 / share
Traded August 22, 2026Filed August 25, 2026SEC filing
Tax or exercise withholding

Sadie Stern

EVP Chief People & Culture Off

Common Stock

Value context
$133.99K
Reported price
$92.34 / share
Traded August 22, 2026Filed August 25, 2026SEC filing
Gift disclosed

Nicholas Augustinos

Director

Common Stock

Value context
Not a purchase
Reported price
Gift · no purchase price
Understand this price

The filing reports a zero transaction price for this gift. It does not establish the market value of the gift.

Traded August 12, 2026Filed August 13, 2026SEC filing
Award disclosed

Steven R. Altman

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Award disclosed

Kyle Malady

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Award disclosed

Nicholas Augustinos

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Award disclosed

Mark G. Foletta

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Award disclosed

Bridgette P. Heller

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Award disclosed

Albert Frederick Osterloh IV

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Award disclosed

Rimma Driscoll

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Award disclosed

Euan A. Ashley

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Award disclosed

Richard Alexander Collins

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Award disclosed

Renee D. Gala

Director

Common Stock

Value context
Non-cash award
Reported price
Award · no purchase price
Understand this price

The filing reports a zero transaction price for this award. It does not mean the awarded securities have no market value.

Traded May 28, 2026Filed June 1, 2026SEC filing
Tax or exercise withholding

Jacob Steven Leach

President, CEO, and Director

Common Stock

Value context
$104.33K
Reported price
$71.90 / share
Traded May 22, 2026Filed May 27, 2026SEC filing
Tax or exercise withholding

Michael Jon Brown

EVP Chief Legal Compliance Off

Common Stock

Value context
$104.33K
Reported price
$71.90 / share
Traded May 22, 2026Filed May 27, 2026SEC filing
Tax or exercise withholding

Jereme M. Sylvain

EVP, Chief Financal Officer

Common Stock

Value context
$104.33K
Reported price
$71.90 / share
Traded May 22, 2026Filed May 27, 2026SEC filing
Tax or exercise withholding

Sadie Stern

EVP Chief People & Culture Off

Common Stock

Value context
$104.33K
Reported price
$71.90 / share
Traded May 22, 2026Filed May 27, 2026SEC filing
Reporting insiderSecurity / transactionAmount / priceValueTraded / disclosedSource
DirectorCommon StockGrant or award5,841Award · no purchase priceNon-cash awardSep 10Filed Sep 10 · 0d laterSEC filing
President, CEO, and DirectorCommon StockExercise-price or tax withholding1,451$92.34 / share$133.99KAug 22Filed Aug 25 · 3d laterSEC filing
EVP, Chief Financal OfficerCommon StockExercise-price or tax withholding1,451$92.34 / share$133.99KAug 22Filed Aug 25 · 3d laterSEC filing
EVP Chief Legal Compliance OffCommon StockExercise-price or tax withholding1,451$92.34 / share$133.99KAug 22Filed Aug 25 · 3d laterSEC filing
EVP Chief People & Culture OffCommon StockExercise-price or tax withholding1,451$92.34 / share$133.99KAug 22Filed Aug 25 · 3d laterSEC filing
DirectorCommon StockGift1,075Gift · no purchase priceNot a purchaseAug 12Filed Aug 13 · 1d laterSEC filing
DirectorCommon StockGrant or award5,565Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
DirectorCommon StockGrant or award5,575Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
DirectorCommon StockGrant or award5,575Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
DirectorCommon StockGrant or award6,331Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
DirectorCommon StockGrant or award5,575Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
DirectorCommon StockGrant or award1,630Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
DirectorCommon StockGrant or award5,605Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
DirectorCommon StockGrant or award5,565Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
DirectorCommon StockGrant or award5,605Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
DirectorCommon StockGrant or award5,605Award · no purchase priceNon-cash awardMay 28Filed Jun 1 · 4d laterSEC filing
President, CEO, and DirectorCommon StockExercise-price or tax withholding1,451$71.90 / share$104.33KMay 22Filed May 27 · 5d laterSEC filing
EVP Chief Legal Compliance OffCommon StockExercise-price or tax withholding1,451$71.90 / share$104.33KMay 22Filed May 27 · 5d laterSEC filing
EVP, Chief Financal OfficerCommon StockExercise-price or tax withholding1,451$71.90 / share$104.33KMay 22Filed May 27 · 5d laterSEC filing
EVP Chief People & Culture OffCommon StockExercise-price or tax withholding1,451$71.90 / share$104.33KMay 22Filed May 27 · 5d laterSEC filing

Showing the latest 20 of 29 trades. Show all 29 trades

Congress transactions 3

All Congress filings
Full sale disclosed

DexCom, Inc. - Common Stock · Stock

The filing reports a full sale for a spouse.

Tina Smith official portraitTina SmithReporting Senate member
Reported amount
$100,001 – $250,000Reported range; exact amount not disclosed.
Trade date
May 7, 2026
Filed May 10, 2026 · 3d laterOriginal report
Partial sale disclosed

DexCom, Inc. - Common Stock · Stock

The filing reports a partial sale for a spouse.

Tina Smith official portraitTina SmithReporting Senate member
Reported amount
$100,001 – $250,000Reported range; exact amount not disclosed.
Trade date
April 29, 2026
Filed May 10, 2026 · 11d laterOriginal report
Purchase disclosed

Dexcom Inc · Stock

The filing reports a purchase for a joint account.

John Boozman official portraitJohn BoozmanReporting Senate member
Reported amount
$1,001 – $15,000Reported range; exact amount not disclosed.
Trade date
January 26, 2026
Filed February 15, 2026 · 20d laterOriginal report
Explore furtherTechnical lab Company financials Test a strategy Compare company

Why this buying score?

No qualifying common-equity purchases

No eligible common-equity purchase is public by this cutoff within 180 transaction-date days. Other instruments, exercises and routine activity do not contribute purchase points.

+0 pts

This score describes qualifying insider purchases at issuer level. Read the methodology

Sources and coverage

Limited filing history · Market-wide discovery does not establish complete company history. View coverage
Source
SEC EDGAR · Form 4
Issuer CIK
0001093557
Latest public acceptance
Sep 30, 2026, 08:15 PM UTC
Score calculated
Oct 7, 2026, 12:06 AM UTC
Parser
form4-parser-1.5
Classifier
form4-classifier-1.1
Scoring methodology
insider-experimental-1.1
Availability
Public filing time, not trade date

Open a transaction's SEC filing for the primary evidence. A code P may describe an open-market or private purchase; classification is not proof of intent.

Insider activity can have many explanations. Signal Strength is not a probability of profit or a recommendation to trade.