WallStreetZenWallStreetZen

NASDAQ: TNDM
Tandem Diabetes Care Inc Stock Ownership - Who owns Tandem Diabetes Care?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Tandem Diabetes Care Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Dick AllenDirector2025-06-021,000$19.88
$19.88kSell
Rajwant SodhiDirector2025-05-224,387$20.64
$90.55kBuy
Kathleen McGroddygoetzDirector2025-05-224,387$20.64
$90.55kBuy
Peyton R. HowellDirector2025-05-224,387$20.64
$90.55kBuy
Dick AllenDirector2025-05-224,387$20.64
$90.55kBuy
Christopher J. TwomeyDirector2025-05-224,387$20.64
$90.55kBuy
Myoungil ChaDirector2025-05-224,387$20.64
$90.55kBuy
Joao Paulo Falcao MalagueiraDirector2025-05-224,387$20.64
$90.55kBuy
Rebecca B. RobertsonDirector2025-05-224,387$20.64
$90.55kBuy
Susan MorrisonEVP Chief Admin. Officer2025-05-151,255$22.70
$28.49kSell

1 of 12

TNDM insiders have sold more... subscribe to Premium to read more.
Net Insider Buy/Sell (L12M) Ownership

Be the first to know when TNDM insiders and whales buy or sell their stock.

TNDM Shareholders

What type of owners hold Tandem Diabetes Care Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Blackrock Inc16.56%11,028,712$228.96MInstitution
Vanguard Group Inc10.95%7,292,169$151.39MInstitution
Sessa Capital IM LP6.71%4,466,307$92.72MInstitution
Douglas A. Roeder5.54%3,688,625$76.58MInsider
Delphi Management Partners VIII LLC5.51%3,668,019$76.15MInsider
Kathleen K. Schoemaker4.87%3,243,448$67.33MInsider
James C. Blair4.87%3,243,448$67.33MInsider
Nicole Vitullo4.87%3,243,448$67.33MInsider
Brian K. Halak4.87%3,243,448$67.33MInsider
Jesse I. Treu4.87%3,243,448$67.33MInsider

1 of 3

TNDM vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TNDM66.10%33.90%Net SellingNet Buying
AORT79.33%20.67%Net SellingNet Selling
AHCO49.44%50.56%Net Selling
ATEC23.17%76.83%Net SellingNet Selling
CNMD97.30%2.70%Net BuyingNet Selling
View Top Medical Device Stocks

Tandem Diabetes Care Stock Ownership FAQ

Who owns Tandem Diabetes Care?

Tandem Diabetes Care (NASDAQ: TNDM) is owned by 109.45% institutional shareholders, 56.13% Tandem Diabetes Care insiders, and 0.00% retail investors. Douglas A. Roeder is the largest individual Tandem Diabetes Care shareholder, owning 3.69M shares representing 5.54% of the company. Douglas A. Roeder's Tandem Diabetes Care shares are currently valued at $76.58M.

If you're new to stock investing, here's how to buy Tandem Diabetes Care stock.
©2025 WallStreetZen
Company
AboutNewsBlogStock Investing FAQPlansPrivacy PolicyTerms of ServiceCancellation & RefundsPerformanceHelp GuidesContactTwitterYouTubeNewsletter
Stock Tools
Top Performing AnalystsStock ScreenerStock ForecastTrending StocksStrong Buy StocksHighest Earnings StocksBest Dividend Paying StocksStatisticsStock Market SectorsStock Market IndustriesHow to Buy Stocks Online
Stock Ideas
Buy The DipBiggest Stock Gainers TodayBiggest Stock Losers Today52 Week High Stocks52 Week Low StocksMost Active Stocks TodayMost Undervalued StocksBest Penny Stocks to Buy NowBest Stocks Under $5Best Stocks Under $10
WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.