As of June 18, 2026, Masimo's top three insider holders are Capital Management Lp Politan (Other, 4.59Mn shares), Joe E Kiani (Ceo And Chairman Of The Board, 603.92K shares), Joe E Kiani (Ceo And Chairman Of The Board, 46.82K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Craig B Reynolds | - | 18,371 | 0 | 01 May, 2025 |
| William R Jellison | - | 4,790 | 0 | 12 Aug, 2025 |
| Wendy E Lane | - | 1,383 | 0 | 01 May, 2025 |
| Joe E Kiani | Ceo And Chairman Of The Board | 603,924 | 0 | 12 Aug, 2024 |
| Julie Ann Shimer | - | 4,410 | 0 | 31 May, 2023 |
| Anand Sampath | Evp, Ops Clinical Research | 40,909 | 0 | 30 Jan, 2026 |
| Catherine M. Szyman | Ceo | 7,605 | 0 | 16 Mar, 2026 |
| Timothy J Scannell | - | 1,383 | 0 | 01 May, 2025 |
| Darlene J. S. Solomon | - | 1,790 | 0 | 01 May, 2025 |
| Thomas Samuel Mcclenahan | Evp, Gen Counsel Corp Sec | 36,747 | 0 | 01 Mar, 2024 |
| Adam Mikkelson | - | 4,108 | 0 | 31 May, 2023 |
| Micah W Young | Evp Chief Financial Officer | 25,656 | 0 | 16 Mar, 2026 |
| Tao Levy | Evp, Bus Dev | 26,810 | 0 | 15 Nov, 2024 |
| Bilal Muhsin | Chief Operating Officer | 24,172 | 0 | 14 May, 2025 |
| H Michael Cohen | - | 3,823 | 0 | 31 May, 2023 |
| Robert A Chapek | - | 3,455 | 0 | 01 May, 2025 |
| Michelle Brennan | Interim Ceo | 7,318 | 0 | 14 Aug, 2025 |
| Capital Management Lp Politan | - | 0 | 4,589,648 | 29 Aug, 2025 |
| Blair Tripodi | Coo, Consumer Division | 13,818 | 0 | 25 Sep, 2025 |
| Omar Ahmed | Ctio Evp Of Engineering | 3,268 | 0 | 17 Nov, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 11 Mar, 2026 | Micah W Young | Common Stock | A | 873 | $0.00 | 26,127 | D | M |
| 11 Mar, 2026 | Micah W Young | Common Stock | A | 873 | $0.00 | 26,127 | D | M |
| 11 Mar, 2026 | Catherine M. Szyman | Common Stock | A | 2,101 | $0.00 | 8,674 | D | M |
| 11 Mar, 2026 | Catherine M. Szyman | Common Stock | A | 2,101 | $0.00 | 8,674 | D | M |
| 11 Mar, 2026 | Catherine M. Szyman | Common Stock | D | 1,069 | $175.47 | 7,605 | D | F |
| 11 Mar, 2026 | Catherine M. Szyman | Common Stock | D | 1,069 | $175.47 | 7,605 | D | F |
| 11 Mar, 2026 | Micah W Young | Common Stock | D | 471 | $175.47 | 25,656 | D | F |
| 11 Mar, 2026 | Micah W Young | Common Stock | D | 471 | $175.47 | 25,656 | D | F |
| 11 Mar, 2026 | Catherine M. Szyman | Restricted Stock Units | D | 2,101 | $0.00 | 6,306 | D | M |
| 11 Mar, 2026 | Micah W Young | Restricted Stock Units | D | 873 | $0.00 | 2,622 | D | M |
| 11 Mar, 2026 | Micah W Young | Restricted Stock Units | D | 873 | $0.00 | 2,622 | D | M |
| 11 Mar, 2026 | Catherine M. Szyman | Restricted Stock Units | D | 2,101 | $0.00 | 6,306 | D | M |
| 11 Mar, 2026 | Capital Management Lp Politan | Forward Sale Contract (obligation to sell) | A | 142,681 | - | 142,681 | I | J |
| 11 Mar, 2026 | Capital Management Lp Politan | Forward Sale Contract (obligation to sell) | A | 142,681 | - | 142,681 | I | J |
| 12 Mar, 2026 | Capital Management Lp Politan | Forward Sale Contract (obligation to sell) | A | 130,869 | - | 130,869 | I | J |
| 12 Mar, 2026 | Capital Management Lp Politan | Forward Sale Contract (obligation to sell) | A | 130,869 | - | 130,869 | I | J |
| 06 Mar, 2026 | Micah W Young | Restricted Stock Units | A | 17,671 | $0.00 | 17,671 | D | A |
| 06 Mar, 2026 | Greg Allen Meehan | Restricted Stock Units | A | 8,550 | $0.00 | 8,550 | D | A |
| 06 Mar, 2026 | Elisabeth A Hellmann | Restricted Stock Units | A | 5,985 | $0.00 | 5,985 | D | A |
| 06 Mar, 2026 | Charles Dadswell | Restricted Stock Units | A | 10,261 | $0.00 | 10,261 | D | A |