MASI
Masimo Corporation
NASDAQ · Healthcare · Medical - Instruments & Supplies · US
$179.95
+0.00%0
Insider buys (3m)
0
Insider sells (3m)
$0.00
Net value (3m)
+2.5%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| May 5, 2026 | LANE WENDY E · director | M-Exempt | 1,225 | $0.00 |
| May 5, 2026 | Scannell Timothy J · director | A-Award | 1,119 | $0.00 |
| May 5, 2026 | LANE WENDY E · director | A-Award | 1,119 | $0.00 |
| May 5, 2026 | Scannell Timothy J · director | M-Exempt | 1,225 | $0.00 |
| May 5, 2026 | Hellmann Elisabeth A · officer: Chief Human Resources Officer | F-InKind | 121 | $178 |
| May 5, 2026 | Hellmann Elisabeth A · officer: Chief Human Resources Officer | M-Exempt | 335 | $0.00 |
| May 5, 2026 | Brennan Michelle · director, other: Chairman of the Board | M-Exempt | 1,225 | $0.00 |
| May 5, 2026 | Brennan Michelle · director, other: Chairman of the Board | A-Award | 1,119 | $0.00 |
| Mar 16, 2026 | Young Micah W · officer: EVP & Chief Financial Officer | F-InKind | 471 | $175 |
| Mar 16, 2026 | Szyman Catherine M. · director, officer: CEO | F-InKind | 1,069 | $175 |
| Mar 16, 2026 | Young Micah W · officer: EVP & Chief Financial Officer | M-Exempt | 873 | $0.00 |
| Mar 16, 2026 | Szyman Catherine M. · director, officer: CEO | M-Exempt | 2,101 | $0.00 |
| Mar 10, 2026 | Szyman Catherine M. · director, officer: CEO | A-Award | 39,904 | $0.00 |
| Mar 10, 2026 | Young Micah W · officer: EVP & Chief Financial Officer | A-Award | 17,671 | $0.00 |
| Mar 10, 2026 | Meehan Greg Allen · officer: Chief Commerical Officer | A-Award | 8,550 | $0.00 |
| Mar 10, 2026 | Dadswell Charles · officer: EVP, General Counsel | A-Award | 10,261 | $0.00 |
| Mar 10, 2026 | Hellmann Elisabeth A · officer: Chief Human Resources Officer | A-Award | 5,985 | $0.00 |
| Mar 10, 2026 | Sampath Anand · officer: EVP, Operations | A-Award | 6,840 | $0.00 |
| Mar 10, 2026 | Benner Tim · officer: Chief Marketing Officer | A-Award | 6,128 | $0.00 |
| Mar 3, 2026 | Young Micah W · officer: EVP & Chief Financial Officer | A-Award | 15,000 | $0.00 |
| Mar 3, 2026 | Young Micah W · officer: EVP & Chief Financial Officer | M-Exempt | 15,000 | $0.00 |
| Mar 3, 2026 | Young Micah W · officer: EVP & Chief Financial Officer | F-InKind | 8,093 | $175 |
| Feb 26, 2026 | Young Micah W · officer: EVP & Chief Financial Officer | F-InKind | 1,123 | $175 |
| Feb 26, 2026 | Young Micah W · officer: EVP & Chief Financial Officer | A-Award | 2,034 | $0.00 |
| Feb 13, 2026 | Szyman Catherine M. · director, officer: CEO | M-Exempt | 11,141 | $0.00 |
| Feb 13, 2026 | Szyman Catherine M. · director, officer: CEO | F-InKind | 4,568 | $0.00 |
| Jan 30, 2026 | Sampath Anand · officer: EVP, Ops & Clinical Research | Sale | 196 | $138 |
| Jan 30, 2026 | Sampath Anand · officer: EVP, Ops & Clinical Research | M-Exempt | 30,000 | $38 |
| Jan 30, 2026 | Sampath Anand · officer: EVP, Ops & Clinical Research | Sale | 6,560 | $137 |
| Jan 30, 2026 | Sampath Anand · officer: EVP, Ops & Clinical Research | Sale | 11,924 | $137 |
Institutional positioning
13F filings over the trailing two quarters
New 135Increased 139Reduced 116Sold out 455
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Reduced | 4,644,578 | May 13, 2026 |
| POLITAN CAPITAL MANAGEMENT LP | Unchanged | 4,589,648 | May 15, 2026 |
| PENTWATER CAPITAL MANAGEMENT LP | New Position | 3,176,000 | May 15, 2026 |
| BARCLAYS PLC | Increased | 2,743,985 | May 15, 2026 |
| HBK INVESTMENTS L P | New Position | 2,576,109 | May 15, 2026 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Reduced | 2,342,790 | May 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 2,050,045 | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 2,006,861 | May 8, 2026 |
| FMR LLC | Reduced | 1,450,823 | May 15, 2026 |
| STATE STREET CORP | Increased | 1,437,724 | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 1,277,453 | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 984,192 | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 956,736 | May 15, 2026 |
| BALYASNY ASSET MANAGEMENT L.P. | New Position | 856,086 | May 15, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 831,966 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing May 5, 2026