NASDAQ: MASI
Masimo Corp Stock Ownership - Who owns Masimo?

Insider buying vs selling

Have Masimo Corp insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Omar AhmedCTIO EVP of Engineering2025-11-132,474$152.43
$377.11kBuy
Blair TripodiCOO Consumer Division2025-09-2315,000$142.13
$2.13MBuy
Michelle BrennanDirector2025-08-13100$155.25
$15.53kBuy
Michelle BrennanDirector2025-08-12100$150.35
$15.04kBuy
William R. JellisonDirector2025-08-113,000$145.98
$437.94kBuy
Bilal MuhsinChief Operating Officer2025-05-1210,000$34.51
$345.10kBuy
Bilal MuhsinChief Operating Officer2025-05-123,881$162.72
$631.51kSell
Bilal MuhsinChief Operating Officer2025-05-125,594$163.51
$914.66kSell
Bilal MuhsinChief Operating Officer2025-05-12525$164.96
$86.61kSell
Craig B. ReynoldsDirector2025-03-142,053$166.13
$341.07kSell

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Net Insider Buy/Sell (L12M) Ownership

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MASI Shareholders

What type of owners hold Masimo Corp stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Blackrock Inc19.29%10,361,091$1.45BInstitution
Fmr LLC15.29%8,213,721$1.15BInstitution
Vanguard Group Inc8.95%4,810,011$672.30MInstitution
Politan Capital Management LP8.54%4,589,648$641.50MInstitution
Politan Capital Management LP8.54%4,589,648$641.50MInsider
Joe E. Kiani6.01%3,226,230$450.93MInsider
Massachusetts Financial Services Co4.88%2,619,960$366.19MInstitution
T Rowe Price Investment Management Inc3.96%2,126,763$297.26MInstitution
Capital Research Global Investors3.45%1,854,128$259.15MInstitution
State Street Corp2.76%1,484,471$207.48MInstitution

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MASI vs Medical Device Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
MASI84.75%15.25%Net SellingNet Buying
BRKR54.03%45.97%Net BuyingNet Buying
BIO23.65%76.35%Net SellingNet Selling
GKOS65.69%34.31%Net SellingNet Selling
IRTC77.76%22.24%Net SellingNet Selling

Masimo Stock Ownership FAQ

Who owns Masimo?

Masimo (NASDAQ: MASI) is owned by 104.56% institutional shareholders, 18.82% Masimo insiders, and 0.00% retail investors. Politan Capital Management LP is the largest individual Masimo shareholder, owning 4.59M shares representing 8.54% of the company. Politan Capital Management LP's Masimo shares are currently valued at $648.43M.

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