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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
Jeanclaude KyrillosEVP Chief Operating Officer2025-10-151,301$14.75
$19.19kSell
Rick CarpenterChief Technology Officer2025-09-15207$12.09
$2.50kSell
Mark David NovaraEVP CHIEF COMMERCIAL OFFICER2025-09-153,866$12.09
$46.74kSell
Shannon Marie HansenEVP Chief Legal Officer2025-08-15515$10.82
$5.57kSell
Shannon Marie HansenEVP Chief Legal Officer2025-08-15393$10.82
$4.25kSell
Susan MorrisonEVP Chief Admin. Officer2025-08-15430$10.82
$4.65kSell
Susan MorrisonEVP Chief Admin. Officer2025-08-15314$10.82
$3.40kSell
Leigh VossellerEVP CHIEF FINANCIAL OFFICER2025-08-15538$10.82
$5.82kSell
Shannon Marie HansenEVP Chief Legal Officer2025-08-15190$10.82
$2.06kSell
Rick CarpenterChief Technology Officer2025-08-15730$10.82
$7.90kSell

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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 Inc17.85%12,101,471$225.21MInstitution
Vanguard Group Inc10.42%7,063,314$131.45MInstitution
Sessa Capital IM LP7.37%5,000,000$93.05MInstitution
Arrowmark Colorado Holdings LLC5.44%3,691,198$68.69MInstitution
Douglas A. Roeder5.44%3,688,625$68.65MInsider
Delphi Management Partners VIII LLC5.41%3,668,019$68.26MInsider
Brian H. Dovey4.78%3,243,448$60.36MInsider
Jesse I. Treu4.78%3,243,448$60.36MInsider
James C. Blair4.78%3,243,448$60.36MInsider
Brian K. Halak4.78%3,243,448$60.36MInsider

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TNDM vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TNDM66.12%33.88%Net SellingNet Selling
SSII0.15%99.85%Net Buying
NVCR58.22%41.78%Net BuyingNet Buying
AHCO50.16%49.84%Net SellingNet Selling
CNMD97.23%2.77%Net SellingNet 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 107.80% institutional shareholders, 55.23% 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 5.44% of the company. Douglas A. Roeder's Tandem Diabetes Care shares are currently valued at $67.65M.

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