Masimo Corp

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Masimo Corp
TickerMASI
CIK #0000937556
CUSIP574795100
SectorLife Sciences - Electromedical & Electrotherapeutic Apparatus
Address40 Parker, Irvine, CA 92618
Source [EDGAR]
CIK Filing 2011 - 2025
[0000937556] 10-K
[0000937556] 10-Q
[0000937556] 3
[0000937556] 4
[0000937556] 5
[0000937556] 8-K
[0000937556] SC 13D
[0000937556] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
BlackRock Portfolio Management LLC Masimo Corp [2025-03-04] 0.0
FMR LLC Masimo Corp [2023-01-10] 0.0
Politan Capital Management LP Masimo Corp [2022-08-16] 8.4
BlackRock Inc Masimo Corp [2022-06-09] 10.9
BlackRock Inc Masimo Corp [2022-01-26] 16.3
FMR LLC Masimo Corp [2019-02-13] 0.0
Camber Capital Management LLC Masimo Corp [2014-11-10] 5.44
FMR LLC Masimo Corp [2014-02-14] 0.0
Vanguard Group Inc Masimo Corp [2013-02-13] 5.19
Janus Capital Management LLC Masimo Corp [2012-02-14] 8.2
Form 3/4/5 Filer 2011 - 2025
Brennan Michelle
Masimo Corp
Jellison William R
Benner Tim
Meehan Greg Allen
Ahmed Omar
Neuraxis, INC
Muhsin Bilal
Solomon Darlene J. S.
Lane Wendy E
Scannell Timothy J
Reynolds Craig B
Politan Capital Management LP
Politan Capital Partners GP LLC
Politan Capital Management GP LLC
Koffey Quentin
Chapek Robert A
Hellmann Elisabeth A
Szyman Catherine M.
Young Micah W
Tripodi Blair
Levy Tao
Kiani Joe E
McClenahan Thomas Samuel
Classon ROLF A
Mikkelson Adam
Cohen H Michael
Shimer Julie Ann
Hataishi Paul
Duffy Kevin P
Harkin Thomas
Coleman Jon
Lee Yongsam
Koning John Todd
Sampath Anand
Fitch Sanford
Barker Steven
Van Ramshorst David J
Fishel Rick
de Raad Mark
Leclercq Thierry
Jansen Paul
Lasersohn Jack W
Coleman Robert
Cahill Edward L
Form 13F Holdings
Firm Period DFND Voting Shares
BlackRock, Inc. [2025-06-30] SOLE 10,337,641 10,507,326
FMR LLC [2025-06-30] DFND 8,167,164 8,181,372
Politan Capital Management LP [2025-06-30] SOLE 4,716,536 4,716,536
Vanguard Group Inc [2025-06-30] SOLE 0 4,558,584
Massachusetts Financial Services Co /MA/ [2025-06-30] SOLE 1,960,396 1,960,396
Capital Research Global Investors [2025-06-30] DFND 1,855,670 1,855,670
State Street Corp [2025-06-30] DFND 1,345,124 1,486,394
Holocene Advisors LP [2025-06-30] SOLE 1,243,607 1,243,607
Westfield Capital Management Co LP [2025-06-30] SOLE 831,732 1,181,203
Durable Capital Partners LP [2025-06-30] SOLE 1,163,898 1,163,898
Alyeska Investment Group LP [2025-06-30] SOLE 1,134,490 1,134,490
Geode Capital Management LLC [2025-06-30] DFND 888,249 896,418
AllianceBernstein LP [2025-06-30] DFND 789,149 844,067
Viking Global Investors LP [2025-06-30] SOLE 767,426 767,426
Morgan Stanley [2025-06-30] DFND 732,959 767,375
Liontrust Investment Partners LLP [2025-06-30] SOLE 708,300 708,300
RTW Investments LP [2025-06-30] SOLE 683,294 683,294
Massachusetts Financial Services Co /MA/ [2025-06-30] DFND 0 509,997
Goldman Sachs Group Inc [2025-06-30] DFND 469,459 471,525
Sumitomo Mitsui Trust Group, Inc. [2025-06-30] DFND 471,041 471,041
Dimensional Fund Advisors LP [2025-06-30] SOLE 439,933 464,305
Schroder Investment Management Group [2025-06-30] SOLE 448,501 448,501
Ameriprise Financial Inc [2025-06-30] DFND 0 394,487
BAMCO Inc /NY/ [2025-06-30] DFND 0 384,589
Charles Schwab Investment Management Inc [2025-06-30] SOLE 370,733 370,734
Northern Trust Corp [2025-06-30] DFND 364,650 366,777
Corient Private Wealth LLC [2025-06-30] SOLE 1,287 330,414
Bank of New York Mellon Corp [2025-06-30] DFND 294,667 317,238
Grantham Mayo van Otterloo & Co LLC [2025-06-30] SOLE 139,258 240,563
Invesco Ltd. [2025-06-30] DFND 0 237,303
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