MASI
Masimo Corporation
NASDAQ: MASI · HEALTHCARE · MEDICAL DEVICES
$178.46
-0.03% today
Updated 2026-04-29
Market cap
$9.34B
P/E ratio
46.47
P/S ratio
6.12x
EPS (TTM)
$3.84
Dividend yield
—
52W range
$126 – $179
Volume
1.6M
Masimo Corporation (MASI) Insider transactions
Net insider activity
Net selling (298,430 shares)
Buy transactions
51
Sell transactions
49
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-12 | POLITAN, CAPITAL MANAGEMENT LP | Director by deputization | Buy | 130,869 | — | — |
| 2026-03-11 | YOUNG, MICAH W | EVP & Chief Financial Officer | Sale | 873 | — | — |
| 2026-03-11 | YOUNG, MICAH W | EVP & Chief Financial Officer | Buy | 873 | — | — |
| 2026-03-11 | YOUNG, MICAH W | EVP & Chief Financial Officer | Sale | 471 | $175.47 | $82646.37 |
| 2026-03-11 | SZYMAN, CATHERINE M. | Director, CEO | Sale | 2,101 | — | — |
| 2026-03-11 | SZYMAN, CATHERINE M. | Director, CEO | Buy | 2,101 | — | — |
| 2026-03-11 | SZYMAN, CATHERINE M. | Director, CEO | Sale | 1,069 | $175.47 | $187577.43 |
| 2026-03-11 | POLITAN, CAPITAL MANAGEMENT LP | Director by deputization | Buy | 142,681 | — | — |
| 2026-03-06 | YOUNG, MICAH W | EVP & Chief Financial Officer | Buy | 17,671 | — | — |
| 2026-03-06 | SZYMAN, CATHERINE M. | Director, CEO | Buy | 39,904 | — | — |
| 2026-03-06 | SAMPATH, ANAND | EVP, Operations | Buy | 6,840 | — | — |
| 2026-03-06 | MEEHAN, GREG ALLEN | Chief Commerical Officer | Buy | 8,550 | — | — |
| 2026-03-06 | HELLMANN, ELISABETH A | Chief Human Resources Officer | Buy | 5,985 | — | — |
| 2026-03-06 | DADSWELL, CHARLES | EVP, General Counsel | Buy | 10,261 | — | — |
| 2026-03-06 | BENNER, TIM | Chief Marketing Officer | Buy | 6,128 | — | — |
| 2026-02-27 | YOUNG, MICAH W | EVP & Chief Financial Officer | Sale | 15,000 | — | — |
| 2026-02-27 | YOUNG, MICAH W | EVP & Chief Financial Officer | Buy | 15,000 | — | — |
| 2026-02-27 | YOUNG, MICAH W | EVP & Chief Financial Officer | Sale | 8,093 | $175.35 | $1.42M |
| 2026-02-26 | YOUNG, MICAH W | EVP & Chief Financial Officer | Buy | 2,034 | — | — |
| 2026-02-26 | YOUNG, MICAH W | EVP & Chief Financial Officer | Sale | 1,123 | $175.22 | $196772.06 |
| 2026-02-12 | SZYMAN, CATHERINE M. | Director, CEO | Sale | 11,141 | — | — |
| 2026-02-12 | SZYMAN, CATHERINE M. | Director, CEO | Buy | 11,141 | $132.96 | $1.48M |
| 2026-02-12 | SZYMAN, CATHERINE M. | Director, CEO | Sale | 4,568 | — | — |
| 2026-01-28 | SAMPATH, ANAND | EVP, Ops & Clinical Research | Sale | 30,000 | — | — |
| 2026-01-28 | SAMPATH, ANAND | EVP, Ops & Clinical Research | Buy | 30,000 | $37.84 | $1.14M |
| 2026-01-28 | SAMPATH, ANAND | EVP, Ops & Clinical Research | Sale | 11,924 | $136.56 | $1.63M |
| 2026-01-28 | SAMPATH, ANAND | EVP, Ops & Clinical Research | Sale | 6,560 | $137.22 | $900163.20 |
| 2026-01-28 | SAMPATH, ANAND | EVP, Ops & Clinical Research | Sale | 196 | $138.09 | $27065.64 |
| 2025-11-13 | AHMED, OMAR | CTIO & EVP of Engineering | Sale | 2,474 | — | — |
| 2025-11-13 | AHMED, OMAR | CTIO & EVP of Engineering | Buy | 2,474 | $152.43 | $377111.82 |
| 2025-11-13 | AHMED, OMAR | CTIO & EVP of Engineering | Sale | 974 | — | — |
| 2025-09-23 | TRIPODI, BLAIR | COO, Consumer Division | Sale | 15,000 | — | — |
| 2025-09-23 | TRIPODI, BLAIR | COO, Consumer Division | Buy | 15,000 | $142.13 | $2.13M |
| 2025-09-23 | TRIPODI, BLAIR | COO, Consumer Division | Sale | 8,078 | — | — |
| 2025-08-29 | POLITAN, CAPITAL MANAGEMENT LP | Director by deputization | Sale | 126,888 | — | — |
| 2025-08-13 | BRENNAN, MICHELLE | Director, Chairman of the Board | Buy | 100 | $155.25 | $15525.00 |
| 2025-08-12 | BRENNAN, MICHELLE | Director, Chairman of the Board | Buy | 100 | $150.35 | $15035.00 |
| 2025-08-11 | JELLISON, WILLIAM R | Director | Buy | 3,000 | $145.98 | $437940.00 |
| 2025-07-01 | MASIMO, CORP | 10% Owner | Sale | 289,779 | — | — |
| 2025-07-01 | MASIMO, CORP | 10% Owner | Sale | 531,548 | $2.25 | $1.20M |
| 2025-07-01 | MASIMO, CORP | 10% Owner | Buy | 289,779 | $0.00 | $28.98 |
| 2025-05-12 | MUHSIN, BILAL | Chief Operating Officer | Sale | 10,000 | $34.51 | $345100.00 |
| 2025-05-12 | MUHSIN, BILAL | Chief Operating Officer | Buy | 10,000 | $34.51 | $345100.00 |
| 2025-05-12 | MUHSIN, BILAL | Chief Operating Officer | Sale | 5,594 | $163.51 | $914663.75 |
| 2025-05-12 | MUHSIN, BILAL | Chief Operating Officer | Sale | 3,881 | $162.72 | $631512.44 |
| 2025-05-12 | MUHSIN, BILAL | Chief Operating Officer | Sale | 525 | $164.96 | $86605.05 |
| 2025-04-29 | SOLOMON, DARLENE J. S. | Director | Sale | 1,790 | — | — |
| 2025-04-29 | SOLOMON, DARLENE J. S. | Director | Buy | 1,225 | — | — |
| 2025-04-29 | SOLOMON, DARLENE J. S. | Director | Buy | 1,790 | — | — |
| 2025-04-29 | SCANNELL, TIMOTHY J | Director | Sale | 1,383 | — | — |
| 2025-04-29 | SCANNELL, TIMOTHY J | Director | Buy | 1,225 | — | — |
| 2025-04-29 | SCANNELL, TIMOTHY J | Director | Buy | 1,383 | — | — |
| 2025-04-29 | REYNOLDS, CRAIG B | Director | Sale | 1,790 | — | — |
| 2025-04-29 | REYNOLDS, CRAIG B | Director | Buy | 1,790 | — | — |
| 2025-04-29 | POLITAN, CAPITAL MANAGEMENT LP | Director by deputization | Sale | 1,790 | — | — |
| 2025-04-29 | POLITAN, CAPITAL MANAGEMENT LP | Director by deputization | Buy | 1,225 | — | — |
| 2025-04-29 | POLITAN, CAPITAL MANAGEMENT LP | Director by deputization | Buy | 1,790 | — | — |
| 2025-04-29 | LANE, WENDY E | Director | Sale | 1,383 | — | — |
| 2025-04-29 | LANE, WENDY E | Director | Buy | 1,225 | — | — |
| 2025-04-29 | LANE, WENDY E | Director | Buy | 1,383 | — | — |
| 2025-04-29 | JELLISON, WILLIAM R | Director | Sale | 1,790 | — | — |
| 2025-04-29 | JELLISON, WILLIAM R | Director | Buy | 1,225 | — | — |
| 2025-04-29 | JELLISON, WILLIAM R | Director | Buy | 1,790 | — | — |
| 2025-04-29 | CHAPEK, ROBERT A | Director | Sale | 1,790 | — | — |
| 2025-04-29 | CHAPEK, ROBERT A | Director | Buy | 1,790 | — | — |
| 2025-04-29 | BRENNAN, MICHELLE | Director, Chairman of the Board | Sale | 1,790 | — | — |
| 2025-04-29 | BRENNAN, MICHELLE | Director, Chairman of the Board | Buy | 1,225 | — | — |
| 2025-04-29 | BRENNAN, MICHELLE | Director, Chairman of the Board | Buy | 766 | — | — |
| 2025-04-29 | BRENNAN, MICHELLE | Director, Chairman of the Board | Buy | 1,790 | — | — |
| 2025-04-21 | HELLMANN, ELISABETH A | Chief Human Resources Officer | Buy | 1,340 | — | — |
| 2025-04-21 | HELLMANN, ELISABETH A | Chief Human Resources Officer | Buy | 2,873 | — | — |
| 2025-03-14 | REYNOLDS, CRAIG B | Director | Sale | 2,053 | $166.13 | $341067.97 |
| 2025-03-13 | MUHSIN, BILAL | Chief Operating Officer | Buy | 3,512 | — | — |
| 2025-03-13 | MUHSIN, BILAL | Chief Operating Officer | Buy | 7,771 | — | — |
| 2025-03-11 | YOUNG, MICAH W | EVP & Chief Financial Officer | Buy | 3,495 | — | — |
| 2025-03-11 | YOUNG, MICAH W | EVP & Chief Financial Officer | Buy | 7,739 | — | — |
| 2025-03-11 | SZYMAN, CATHERINE M. | Director, CEO | Buy | 8,407 | — | — |
| 2025-03-11 | SZYMAN, CATHERINE M. | Director, CEO | Buy | 18,617 | — | — |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Sale | 30,000 | $37.84 | $1.14M |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Buy | 30,000 | $37.84 | $1.14M |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Sale | 10,087 | $166.03 | $1.67M |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Sale | 6,965 | $170.86 | $1.19M |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Sale | 3,935 | $165.18 | $649983.30 |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Sale | 2,400 | $163.28 | $391872.00 |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Sale | 1,761 | $169.37 | $298260.57 |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Sale | 1,716 | $171.76 | $294740.16 |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Sale | 1,700 | $167.97 | $285549.00 |
| 2025-03-10 | MUHSIN, BILAL | Chief Operating Officer | Sale | 1,436 | $166.71 | $239395.56 |
| 2025-03-01 | YOUNG, MICAH W | EVP & Chief Financial Officer | Sale | 15,000 | — | — |
| 2025-03-01 | YOUNG, MICAH W | EVP & Chief Financial Officer | Buy | 15,000 | — | — |
| 2025-03-01 | YOUNG, MICAH W | EVP & Chief Financial Officer | Sale | 8,100 | $188.77 | $1.53M |
| 2025-03-01 | TRIPODI, BLAIR | COO, Consumer Division | Sale | 15,000 | — | — |
| 2025-03-01 | TRIPODI, BLAIR | COO, Consumer Division | Buy | 15,000 | — | — |
| 2025-03-01 | TRIPODI, BLAIR | COO, Consumer Division | Sale | 8,104 | $188.77 | $1.53M |
| 2025-03-01 | MUHSIN, BILAL | Chief Operating Officer | Sale | 15,000 | — | — |
| 2025-03-01 | MUHSIN, BILAL | Chief Operating Officer | Buy | 15,000 | — | — |
| 2025-03-01 | MUHSIN, BILAL | Chief Operating Officer | Sale | 8,098 | $188.77 | $1.53M |
| 2025-02-12 | SZYMAN, CATHERINE M. | Director, CEO | Buy | 33,424 | — | — |
| 2025-02-12 | BRENNAN, MICHELLE | Director, Interim CEO | Sale | 8,916 | — | — |
| 2025-02-12 | BRENNAN, MICHELLE | Director, Interim CEO | Buy | 8,916 | — | — |