MASIMO CORP - MASI
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 35
Latest filed: May 15, 2026
| Form | Count |
|---|---|
| 4 | 18 |
| SCHEDULE 13G/A | 6 |
| 8-K | 6 |
| 144 | 3 |
| SCHEDULE 13G | 1 |
| SCHEDULE 13D/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| May 15, 2026 | SCHEDULE 13G | — | 0000902664-26-002537 | View |
| May 14, 2026 | SCHEDULE 13G/A | — | 0001213900-26-056784 | View |
| May 05, 2026 | 4 | Apr 21, 2026 | 0000937556-26-000055 | View |
| May 05, 2026 | 4 | Apr 23, 2026 | 0000937556-26-000057 | View |
| May 05, 2026 | 4 | Apr 23, 2026 | 0000937556-26-000059 | View |
| May 05, 2026 | 4 | Apr 23, 2026 | 0000937556-26-000061 | View |
| May 04, 2026 | 8-K | May 01, 2026 | 0001104659-26-054512 | View |
| Apr 30, 2026 | SCHEDULE 13G/A | — | 0002052113-26-000474 | View |
| Apr 23, 2026 | 8-K | Apr 23, 2026 | 0001104659-26-047839 | View |
| Mar 27, 2026 | SCHEDULE 13G/A | — | 0000102909-26-001783 | View |
| Mar 16, 2026 | 4 | Mar 11, 2026 | 0000937556-26-000042 | View |
| Mar 16, 2026 | 4 | Mar 11, 2026 | 0000937556-26-000044 | View |
| Mar 13, 2026 | 4 | Mar 11, 2026 | 0001104659-26-027790 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0000937556-26-000040 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0000937556-26-000038 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0000937556-26-000023 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0000937556-26-000025 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0000937556-26-000027 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0000937556-26-000031 | View |
| Mar 10, 2026 | 4 | Mar 06, 2026 | 0000937556-26-000034 | View |
| Mar 06, 2026 | SCHEDULE 13G/A | — | 0000315066-26-000661 | View |
| Mar 03, 2026 | 4 | Feb 27, 2026 | 0000937556-26-000021 | View |
| Feb 26, 2026 | 4 | Feb 26, 2026 | 0000937556-26-000019 | View |
| Feb 17, 2026 | SCHEDULE 13D/A | — | 0000902664-26-001168 | View |
| Feb 17, 2026 | 8-K | Feb 16, 2026 | 0001104659-26-015904 | View |
| Feb 13, 2026 | SCHEDULE 13G/A | — | 0001213900-26-016680 | View |
| Feb 13, 2026 | 4 | Feb 12, 2026 | 0000937556-26-000010 | View |
| Jan 30, 2026 | 4 | Jan 28, 2026 | 0000937556-26-000008 | View |
| Jan 28, 2026 | 144 | — | 0001921094-26-000062 | View |
| Jan 21, 2026 | SCHEDULE 13G/A | — | 0002052113-26-000210 | View |
| Jan 12, 2026 | 8-K | Jan 12, 2026 | 0000937556-26-000005 | View |
| Dec 11, 2025 | 144 | — | 0001921094-25-001529 | View |
| Dec 03, 2025 | 8-K | Dec 03, 2025 | 0000937556-25-000175 | View |
| Dec 01, 2025 | 8-K | Dec 01, 2025 | 0000937556-25-000171 | View |
| Nov 28, 2025 | 144 | — | 0001921094-25-001435 | View |