MASIMO CORP — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Ahmed Omar | CTIO & EVP of Engineering | Option Exercise | 2,474 | $152.43 | $377,112 | 4,242 | Nov 13, 2025 |
| Tripodi Blair | COO, Consumer Division | Tax Withholding | 8,078 | — | — | 13,818 | Sep 23, 2025 |
| Koffey Quentin | — | Other | 126,888 | — | — | 4,589,648 | Aug 29, 2025 |
| Brennan Michelle | — | Purchase | 100 | $150.35 | $15,035 | 7,218 | Aug 13, 2025 |
| Jellison William R | — | Purchase | 3,000 | $145.98 | $437,940 | 4,790 | Aug 11, 2025 |
| Muhsin Bilal | Chief Operating Officer | Sale | 3,881 | $162.72 | $631,516 | 30,291 | May 12, 2025 |
| Solomon Darlene J. S. | — | Option Exercise | 1,790 | — | — | 1,790 | Apr 29, 2025 |
| Scannell Timothy J | — | Option Exercise | 1,383 | — | — | 1,383 | Apr 29, 2025 |
| LANE WENDY E | — | Option Exercise | 1,383 | — | — | 1,383 | Apr 29, 2025 |
| Jellison William R | — | Award / Grant | 1,790 | — | — | 1,790 | Apr 29, 2025 |
| Brennan Michelle | — | Option Exercise | 1,790 | — | — | 7,118 | Apr 29, 2025 |
| REYNOLDS CRAIG B | — | Option Exercise | 1,790 | — | — | 18,371 | Apr 29, 2025 |
| Chapek Robert A | — | Option Exercise | 1,790 | — | — | 3,455 | Apr 29, 2025 |
| Koffey Quentin | — | Option Exercise | 1,790 | — | — | 4,716,536 | Apr 29, 2025 |
| REYNOLDS CRAIG B | — | Sale | 2,053 | $166.13 | $341,065 | 16,581 | Mar 14, 2025 |
| Muhsin Bilal | Chief Operating Officer | Sale | 1,436 | $166.71 | $239,396 | 36,314 | Mar 10, 2025 |
| Tripodi Blair | COO, Consumer Division | Option Exercise | 15,000 | — | — | 15,000 | Mar 1, 2025 |
| Muhsin Bilal | Chief Operating Officer | Tax Withholding | 8,098 | $188.77 | $1,528,659 | 24,172 | Mar 1, 2025 |
| Young Micah W | EVP & Chief Financial Officer | Tax Withholding | 8,100 | $188.77 | $1,529,037 | 17,436 | Mar 1, 2025 |
| Brennan Michelle | Interim CEO | Award / Grant | 8,916 | — | — | 10,144 | Feb 12, 2025 |
| Chapek Robert A | — | Option Exercise | 1,665 | — | — | 1,665 | Jan 15, 2025 |
| Levy Tao | EVP, Bus Dev | Option Exercise | 30,000 | — | — | 41,208 | Nov 13, 2024 |
| KIANI JOE E | CEO and Chairman of the Board | Option Exercise | 231,748 | $37.84 | $8,769,344 | 603,924 | Aug 8, 2024 |
| REYNOLDS CRAIG B | — | Option Exercise | 1,228 | — | — | 18,634 | Jun 26, 2024 |
| Politan Capital Management LP | — | Option Exercise | 1,228 | — | — | 4,714,746 | Jun 26, 2024 |
| Brennan Michelle | — | Option Exercise | 1,228 | — | — | 1,228 | Jun 26, 2024 |
| REYNOLDS CRAIG B | — | Option Exercise | 10,000 | $23.04 | $230,400 | 17,406 | May 1, 2024 |
| REYNOLDS CRAIG B | — | Sale | 40,000 | $136.17 | $5,446,800 | 7,406 | Apr 26, 2024 |
| Muhsin Bilal | Chief Operating Officer | Award / Grant | 2,010 | — | — | 18,015 | Feb 28, 2024 |
| Levy Tao | EVP, BUS DEV | Award / Grant | 1,004 | — | — | 11,609 | Feb 28, 2024 |
| Young Micah W | EVP & Chief Financial Officer | Award / Grant | 1,004 | — | — | 10,924 | Feb 28, 2024 |
| KIANI JOE E | CEO and Chairman of the Board | Award / Grant | 10,050 | — | — | 376,105 | Feb 28, 2024 |
| McClenahan Thomas Samuel | EVP, GEN COUNSEL & CORP SEC | Award / Grant | 1,004 | — | — | 37,141 | Feb 28, 2024 |
| Shimer Julie Ann | — | Option Exercise | 1,435 | — | — | 4,410 | May 26, 2023 |
| REYNOLDS CRAIG B | — | Option Exercise | 1,435 | — | — | 6,657 | May 26, 2023 |
| Cohen H Michael | — | Option Exercise | 1,435 | — | — | 3,823 | May 26, 2023 |
| Mikkelson Adam | — | Option Exercise | 1,435 | — | — | 4,108 | May 26, 2023 |
| KIANI JOE E | CEO and Chairman of the Board | Purchase | 3,600 | $156.79 | $564,444 | 363,290 | May 25, 2023 |
| KIANI JOE E | CEO and Chairman of the Board | Gift | 42,735 | — | — | 42,735 | Mar 17, 2023 |
| KIANI JOE E | CEO and Chairman of the Board | Award / Grant | 50,161 | — | — | 428,835 | Mar 3, 2023 |
| Young Micah W | EVP & Chief Financial Officer | Award / Grant | 5,016 | — | — | 25,211 | Mar 3, 2023 |
| Muhsin Bilal | Chief Operating Officer | Award / Grant | 10,032 | — | — | 33,927 | Mar 3, 2023 |
| McClenahan Thomas Samuel | EVP, GEN COUNSEL & CORP SEC | Award / Grant | 5,016 | — | — | 38,805 | Mar 3, 2023 |
| Levy Tao | EVP, Bus Dev | Award / Grant | 5,016 | — | — | 25,911 | Mar 3, 2023 |
| KIANI JOE E | CEO and Chairman of the Board | Purchase | 1,541 | $146.23 | $225,340 | 46,818 | Dec 15, 2022 |
| KIANI JOE E | CEO and Chairman of the Board | Purchase | 16,537 | $124.45 | $2,058,030 | 39,478 | Nov 14, 2022 |
| KIANI JOE E | CEO and Chairman of the Board | Purchase | 1,201 | $127.80 | $153,488 | 1,201 | Nov 11, 2022 |
| Shimer Julie Ann | — | Option Exercise | 922 | $139.34 | $128,471 | 2,975 | May 26, 2022 |
| REYNOLDS CRAIG B | — | Option Exercise | 922 | $139.34 | $128,471 | 5,222 | May 26, 2022 |
| Mikkelson Adam | — | Option Exercise | 922 | $139.34 | $128,471 | 2,673 | May 26, 2022 |