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

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

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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$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

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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

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.

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