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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 Officer2026-02-17504$18.95
$9.55kSell
Mark David NovaraEVP CHIEF COMMERCIAL OFFICER2026-02-1762$18.95
$1.17kSell
John F. SheridanPRESIDENT CEO2026-02-171,963$18.95
$37.20kSell
Rick CarpenterChief Technology Officer2026-02-17808$18.95
$15.31kSell
Shannon Marie HansenEVP Chief Legal Officer2026-02-17592$18.95
$11.22kSell
Leigh VossellerEVP CHIEF FINANCIAL OFFICER2026-02-17616$18.95
$11.67kSell
Susan MorrisonEVP Chief Admin. Officer2026-02-17372$18.95
$7.05kSell
Leigh VossellerEVP CHIEF FINANCIAL OFFICER2026-02-17619$18.95
$11.73kSell
Susan MorrisonEVP Chief Admin. Officer2026-02-17510$18.95
$9.66kSell
John F. SheridanPRESIDENT CEO2026-02-172,400$18.95
$45.48kSell

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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 Inc16.32%11,149,181$281.29MInstitution
Vanguard Group Inc10.74%7,341,356$185.22MInstitution
Sessa Capital IM LP7.32%5,000,000$126.15MInstitution
Douglas A. Roeder5.40%3,688,625$93.06MInsider
Delphi Management Partners VIII LLC5.37%3,668,019$92.54MInsider
Nicole Vitullo4.75%3,243,448$81.83MInsider
James C. Blair4.75%3,243,448$81.83MInsider
Jesse I. Treu4.75%3,243,448$81.83MInsider
Brian H. Dovey4.75%3,243,448$81.83MInsider
Kathleen K. Schoemaker4.75%3,243,448$81.83MInsider

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TNDM vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
TNDM66.62%33.38%Net SellingNet Selling
UFPT86.93%13.07%Net SellingNet Selling
AXGN60.61%39.39%Net SellingNet Selling
NVCR59.27%40.73%Net BuyingNet Selling
PRCT76.54%23.46%Net 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 109.49% institutional shareholders, 54.86% 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 5.40% of the company. Douglas A. Roeder's Tandem Diabetes Care shares are currently valued at $87.57M.

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