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T

TNDM

Nasdaq

TANDEM DIABETES CARE INC

Latest disclosureAugust 18, 2026
Insider score Why 0?
0/ 100
Qualifying buys · 30d
$0

0 purchases · 0 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 149

Limited filing history
All149Buying0Selling0Other149
Filters

Last 30 daysNo qualifying insider buying. No qualifying insider sales.

149 trades · April 15, 2026 – August 15, 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.

Exercise or conversion

Leigh Vosseller

EVP & CHIEF FINANCIAL OFFICER

Common Stock

Value context
Not established
Reported price
$0 reported · see filing
Understand this price

The filing reports a zero transaction price. That is not a current market valuation; inspect the original filing for context.

Traded August 15, 2026Filed August 18, 2026SEC filing
Tax or exercise withholding

Leigh Vosseller

EVP & CHIEF FINANCIAL OFFICER

Common Stock

Value context
$12.2K
Reported price
$22.72 / share
Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

Leigh Vosseller

EVP & CHIEF FINANCIAL OFFICER

Common Stock

Value context
Not established
Reported price
$0 reported · see filing
Understand this price

The filing reports a zero transaction price. That is not a current market valuation; inspect the original filing for context.

Traded August 15, 2026Filed August 18, 2026SEC filing
Tax or exercise withholding

Leigh Vosseller

EVP & CHIEF FINANCIAL OFFICER

Common Stock

Value context
$21.4K
Reported price
$22.72 / share
Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

Leigh Vosseller

EVP & CHIEF FINANCIAL OFFICER

Restricted Stock Unit

Derivative security · not the ordinary share price.

Value context
Not a separate purchase
Exercise / conversion price
Exercise / conversion price not reported
Understand this price

This row records an option exercise or conversion. The derivative transaction price is separate from the exercise price; it is not the stock's market price. Its row value is not shown as another stock purchase.

Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

Leigh Vosseller

EVP & CHIEF FINANCIAL OFFICER

Restricted Stock Unit

Derivative security · not the ordinary share price.

Value context
Not a separate purchase
Exercise / conversion price
Exercise / conversion price not reported
Understand this price

This row records an option exercise or conversion. The derivative transaction price is separate from the exercise price; it is not the stock's market price. Its row value is not shown as another stock purchase.

Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

John F. Sheridan

PRESIDENT & CEO

Common Stock

Value context
Not established
Reported price
$0 reported · see filing
Understand this price

The filing reports a zero transaction price. That is not a current market valuation; inspect the original filing for context.

Traded August 15, 2026Filed August 18, 2026SEC filing
Tax or exercise withholding

John F. Sheridan

PRESIDENT & CEO

Common Stock

Value context
$69.16K
Reported price
$22.72 / share
Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

John F. Sheridan

PRESIDENT & CEO

Common Stock

Value context
Not established
Reported price
$0 reported · see filing
Understand this price

The filing reports a zero transaction price. That is not a current market valuation; inspect the original filing for context.

Traded August 15, 2026Filed August 18, 2026SEC filing
Tax or exercise withholding

John F. Sheridan

PRESIDENT & CEO

Common Stock

Value context
$114.85K
Reported price
$22.72 / share
Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

John F. Sheridan

PRESIDENT & CEO

Restricted Stock Unit

Derivative security · not the ordinary share price.

Value context
Not a separate purchase
Exercise / conversion price
Exercise / conversion price not reported
Understand this price

This row records an option exercise or conversion. The derivative transaction price is separate from the exercise price; it is not the stock's market price. Its row value is not shown as another stock purchase.

Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

John F. Sheridan

PRESIDENT & CEO

Restricted Stock Unit

Derivative security · not the ordinary share price.

Value context
Not a separate purchase
Exercise / conversion price
Exercise / conversion price not reported
Understand this price

This row records an option exercise or conversion. The derivative transaction price is separate from the exercise price; it is not the stock's market price. Its row value is not shown as another stock purchase.

Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

Susan Morrison

EVP & Chief Admin. Officer

Common Stock

Value context
Not established
Reported price
$0 reported · see filing
Understand this price

The filing reports a zero transaction price. That is not a current market valuation; inspect the original filing for context.

Traded August 15, 2026Filed August 18, 2026SEC filing
Tax or exercise withholding

Susan Morrison

EVP & Chief Admin. Officer

Common Stock

Value context
$7.13K
Reported price
$22.72 / share
Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

Susan Morrison

EVP & Chief Admin. Officer

Common Stock

Value context
Not established
Reported price
$0 reported · see filing
Understand this price

The filing reports a zero transaction price. That is not a current market valuation; inspect the original filing for context.

Traded August 15, 2026Filed August 18, 2026SEC filing
Tax or exercise withholding

Susan Morrison

EVP & Chief Admin. Officer

Common Stock

Value context
$11.25K
Reported price
$22.72 / share
Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

Susan Morrison

EVP & Chief Admin. Officer

Restricted Stock Unit

Derivative security · not the ordinary share price.

Value context
Not a separate purchase
Exercise / conversion price
Exercise / conversion price not reported
Understand this price

This row records an option exercise or conversion. The derivative transaction price is separate from the exercise price; it is not the stock's market price. Its row value is not shown as another stock purchase.

Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

Susan Morrison

EVP & Chief Admin. Officer

Restricted Stock Unit

Derivative security · not the ordinary share price.

Value context
Not a separate purchase
Exercise / conversion price
Exercise / conversion price not reported
Understand this price

This row records an option exercise or conversion. The derivative transaction price is separate from the exercise price; it is not the stock's market price. Its row value is not shown as another stock purchase.

Traded August 15, 2026Filed August 18, 2026SEC filing
Exercise or conversion

Jean-Claude Kyrillos

EVP & Chief Operating Officer

Common Stock

Value context
Not established
Reported price
$0 reported · see filing
Understand this price

The filing reports a zero transaction price. That is not a current market valuation; inspect the original filing for context.

Traded August 15, 2026Filed August 18, 2026SEC filing
Tax or exercise withholding

Jean-Claude Kyrillos

EVP & Chief Operating Officer

Common Stock

Value context
$12.16K
Reported price
$22.72 / share
Traded August 15, 2026Filed August 18, 2026SEC filing
Reporting insiderSecurity / transactionAmount / priceValueTraded / disclosedSource
EVP & CHIEF FINANCIAL OFFICERCommon StockOption exercise or conversion1,496$0 reported · see filingNot establishedAug 15Filed Aug 18 · 3d laterSEC filing
EVP & CHIEF FINANCIAL OFFICERCommon StockExercise-price or tax withholding537$22.72 / share$12.2KAug 15Filed Aug 18 · 3d laterSEC filing
EVP & CHIEF FINANCIAL OFFICERCommon StockOption exercise or conversion2,624$0 reported · see filingNot establishedAug 15Filed Aug 18 · 3d laterSEC filing
EVP & CHIEF FINANCIAL OFFICERCommon StockExercise-price or tax withholding942$22.72 / share$21.4KAug 15Filed Aug 18 · 3d laterSEC filing
EVP & CHIEF FINANCIAL OFFICERRestricted Stock UnitOption exercise or conversionDerivative units1,496Exercise / conversion price not reportedNot a separate purchaseAug 15Filed Aug 18 · 3d laterSEC filing
EVP & CHIEF FINANCIAL OFFICERRestricted Stock UnitOption exercise or conversionDerivative units2,624Exercise / conversion price not reportedNot a separate purchaseAug 15Filed Aug 18 · 3d laterSEC filing
PRESIDENT & CEOCommon StockOption exercise or conversion5,982$0 reported · see filingNot establishedAug 15Filed Aug 18 · 3d laterSEC filing
PRESIDENT & CEOCommon StockExercise-price or tax withholding3,044$22.72 / share$69.16KAug 15Filed Aug 18 · 3d laterSEC filing
PRESIDENT & CEOCommon StockOption exercise or conversion9,934$0 reported · see filingNot establishedAug 15Filed Aug 18 · 3d laterSEC filing
PRESIDENT & CEOCommon StockExercise-price or tax withholding5,055$22.72 / share$114.85KAug 15Filed Aug 18 · 3d laterSEC filing
PRESIDENT & CEORestricted Stock UnitOption exercise or conversionDerivative units5,982Exercise / conversion price not reportedNot a separate purchaseAug 15Filed Aug 18 · 3d laterSEC filing
PRESIDENT & CEORestricted Stock UnitOption exercise or conversionDerivative units9,934Exercise / conversion price not reportedNot a separate purchaseAug 15Filed Aug 18 · 3d laterSEC filing
EVP & Chief Admin. OfficerCommon StockOption exercise or conversion1,097$0 reported · see filingNot establishedAug 15Filed Aug 18 · 3d laterSEC filing
EVP & Chief Admin. OfficerCommon StockExercise-price or tax withholding314$22.72 / share$7.13KAug 15Filed Aug 18 · 3d laterSEC filing
EVP & Chief Admin. OfficerCommon StockOption exercise or conversion1,730$0 reported · see filingNot establishedAug 15Filed Aug 18 · 3d laterSEC filing
EVP & Chief Admin. OfficerCommon StockExercise-price or tax withholding495$22.72 / share$11.25KAug 15Filed Aug 18 · 3d laterSEC filing
EVP & Chief Admin. OfficerRestricted Stock UnitOption exercise or conversionDerivative units1,097Exercise / conversion price not reportedNot a separate purchaseAug 15Filed Aug 18 · 3d laterSEC filing
EVP & Chief Admin. OfficerRestricted Stock UnitOption exercise or conversionDerivative units1,730Exercise / conversion price not reportedNot a separate purchaseAug 15Filed Aug 18 · 3d laterSEC filing
EVP & Chief Operating OfficerCommon StockOption exercise or conversion1,010$0 reported · see filingNot establishedAug 15Filed Aug 18 · 3d laterSEC filing
EVP & Chief Operating OfficerCommon StockExercise-price or tax withholding535$22.72 / share$12.16KAug 15Filed Aug 18 · 3d laterSEC filing

Showing the latest 20 of 149 trades. Show all 149 trades

Congress transactions 2

All Congress filings
Purchase disclosed

Tandem Diabetes Care, Inc. - Common Stock (TNDM) · Stock

The filing reports a purchase for the member.

Gilbert Cisneros official portraitGilbert CisnerosReporting House member
Reported amount
$1,001 – $15,000Reported range; exact amount not disclosed.
Trade date
March 3, 2026
Filed April 7, 2026 · 35d laterOriginal report
Purchase disclosed

Tandem Diabetes Care, Inc. - Common Stock (TNDM) · Stock

The filing reports a purchase for a joint account.

Josh Gottheimer official portraitJosh GottheimerReporting House member
Reported amount
$1,001 – $15,000Reported range; exact amount not disclosed.
Trade date
September 22, 2025
Filed October 15, 2025 · 23d 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
0001438133
Latest public acceptance
Aug 18, 2026, 08:28 PM UTC
Score calculated
Oct 8, 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.