Politan Capital Management LP - 16 Feb 2026 SCHEDULE 13D/A Report for MASIMO CORP Common Stock, par value $0.001 per share (MASI)

Filing Manager
Politan Capital Management LP
Reporting Manager
Quentin Koffey
Security
MASIMO CORP Common Stock, par value $0.001 per share
Symbol
MASI
Shares outstanding
74,046,339 shares
Disclosed Ownership
4,590,873 shares
Ownership
6.2%
Form type
SCHEDULE 13D/A
Filing time
17 Feb 2026, 21:45:25 UTC
Date of event
16 Feb 2026
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Politan Capital Management LP 6.2% 4,586,630 0 4,586,630 /s/ Quentin Koffey Quentin Koffey, Managing Member 0001885245
Politan Capital Management GP LLC 6.2% 4,586,630 0 4,586,630 /s/ Quentin Koffey Quentin Koffey, Managing Member 0001984176
Politan Capital Partners GP LLC 6.2% 4,586,630 0 4,586,630 /s/ Quentin Koffey Quentin Koffey, Managing Member 0001984175
Quentin Koffey 6.2% 4,590,873 4,243 4,586,630 /s/ Quentin Koffey Quentin Koffey 0001984174