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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
Rick CarpenterChief Technology Officer2025-09-15207$12.09
$2.50kSell
Mark David NovaraEVP CHIEF COMMERCIAL OFFICER2025-09-153,866$12.09
$46.74kSell
Elizabeth Anne GasserEVP Chief Strategy Officer2025-08-15588$10.82
$6.36kSell
Rick CarpenterChief Technology Officer2025-08-15730$10.82
$7.90kSell
Elizabeth Anne GasserEVP Chief Strategy Officer2025-08-15805$10.82
$8.71kSell
Mark David NovaraEVP CHIEF COMMERCIAL OFFICER2025-08-1540$10.82
$432.80Sell
John F. SheridanPRESIDENT CEO2025-08-153,038$10.82
$32.87kSell
John F. SheridanPRESIDENT CEO2025-08-152,779$10.82
$30.07kSell
Shannon Marie HansenEVP Chief Legal Officer2025-08-15190$10.82
$2.06kSell
Shannon Marie HansenEVP Chief Legal Officer2025-08-15515$10.82
$5.57kSell

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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 Inc16.09%10,871,558$135.13MInstitution
Vanguard Group Inc10.91%7,369,830$91.61MInstitution
Sessa Capital IM LP7.40%5,000,000$62.15MInstitution
Douglas A. Roeder5.46%3,688,625$45.85MInsider
Delphi Management Partners VIII LLC5.43%3,668,019$45.59MInsider
Nicole Vitullo4.80%3,243,448$40.32MInsider
Brian H. Dovey4.80%3,243,448$40.32MInsider
Kathleen K. Schoemaker4.80%3,243,448$40.32MInsider
James C. Blair4.80%3,243,448$40.32MInsider
Brian K. Halak4.80%3,243,448$40.32MInsider

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TNDM vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TNDM68.38%31.62%Net SellingNet Buying
AXGN59.10%40.90%Net SellingNet Selling
IRMD55.40%41.06%Net SellingNet Selling
INMD57.43%0.00%
BBNX91.23%8.77%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 119.83% institutional shareholders, 55.42% 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 5.46% of the company. Douglas A. Roeder's Tandem Diabetes Care shares are currently valued at $44.93M.

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