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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
Mark David NovaraEVP CHIEF COMMERCIAL OFFICER2025-06-163,846$20.76
$79.84kSell
Rick CarpenterChief Technology Officer2025-06-16207$20.76
$4.30kSell
Dick AllenDirector2025-06-021,000$19.88
$19.88kSell
Christopher J. TwomeyDirector2025-05-224,387$20.64
$90.55kBuy
Rajwant SodhiDirector2025-05-224,387$20.64
$90.55kBuy
Dick AllenDirector2025-05-224,387$20.64
$90.55kBuy
Rebecca B. RobertsonDirector2025-05-224,387$20.64
$90.55kBuy
Joao Paulo Falcao MalagueiraDirector2025-05-224,387$20.64
$90.55kBuy
Kathleen McGroddygoetzDirector2025-05-224,387$20.64
$90.55kBuy
Peyton R. HowellDirector2025-05-224,387$20.64
$90.55kBuy

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Net Insider Buy/Sell (L12M) Ownership

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TNDM Shareholders

What type of owners hold Tandem Diabetes Care Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Blackrock Inc16.56%11,028,712$208.88MInstitution
Vanguard Group Inc10.95%7,292,169$138.11MInstitution
Sessa Capital IM LP6.71%4,466,307$84.59MInstitution
Douglas A. Roeder5.54%3,688,625$69.86MInsider
Delphi Management Partners VIII LLC5.51%3,668,019$69.47MInsider
Brian K. Halak4.87%3,243,448$61.43MInsider
Nicole Vitullo4.87%3,243,448$61.43MInsider
Jesse I. Treu4.87%3,243,448$61.43MInsider
Brian H. Dovey4.87%3,243,448$61.43MInsider
James C. Blair4.87%3,243,448$61.43MInsider

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TNDM vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TNDM66.10%33.90%Net SellingNet Buying
AHCO49.43%50.57%Net Selling
AORT79.40%20.60%Net SellingNet Selling
ESTA81.30%18.70%Net SellingNet Buying
SSII0.00%62.95%Net BuyingNet Buying
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, 56.14% 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 $69.86M.

If you're new to stock investing, here's how to buy Tandem Diabetes Care stock.
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