Insider holders · CIK 0000937556
MASIMO CORP · MASI
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| Joe E KianiCEO and Chairman of the Board | 119,241 | 9,000 | 128,241 | Feb 12, 2019 · 4:24 pm EST | Form 5 |
| Yongsam LeeEVP & CIO | 73,000 | — | 73,000 | Jan 4, 2019 · 4:24 pm EST | Form 4 |
| Steven BarkerDirector | 64,832 | — | 64,832 | Feb 27, 2019 · 4:07 pm EST | Form 4 |
| Sanford FitchDirector | 49,832 | — | 49,832 | Dec 4, 2018 · 4:22 pm EST | Form 4 |
| Rick FishelPres, WW OEM Business... | 20,022 | — | 20,022 | Jul 18, 2017 · 4:37 pm EDT | Form 4 |
| Jon ColemanPres-WW Sales,Pro Svc,Med Affs | 11,201 | 504 | 11,705 | Feb 27, 2019 · 4:56 pm EST | Form 5 |
| Mark de RaadEVP & Chief Financial Officer | 8,660 | — | 8,660 | Jun 1, 2017 · 4:38 pm EDT | Form 4 |
| Paul JansenEVP, Bus Dev | 6,389 | — | 6,389 | Mar 10, 2017 · 5:33 pm EST | Form 4 |
| Thomas Samuel McClenahanEVP & GENERAL COUNSEL | 5,000 | — | 5,000 | Jan 4, 2019 · 4:20 pm EST | Form 4 |
| Thomas HarkinDirector | 4,968 | — | 4,968 | Jun 1, 2018 · 6:03 pm EDT | Form 4 |
| Adam MikkelsonDirector | 1,583 | — | 1,583 | Jun 1, 2018 · 6:00 pm EDT | Form 4 |
| Craig B ReynoldsDirector | 1,583 | — | 1,583 | Jun 1, 2018 · 5:56 pm EDT | Form 4 |
| David J Van RamshorstChief Accounting Officer | 1,000 | — | 1,000 | Oct 2, 2018 · 5:52 pm EDT | Form 4 |
| Politan Capital Management GP LLCrelationship not stated | — | 0 | 0 | Jun 12, 2026 · 4:38 pm EDT | Form 4 |
| Politan Capital Partners GP LLCrelationship not stated | — | 0 | 0 | Jun 12, 2026 · 4:38 pm EDT | Form 4 |
| Quentin Koffeyrelationship not stated | — | 0 | 0 | Jun 12, 2026 · 4:38 pm EDT | Form 4 |
| Paul HataishiSVP, Chief Accounting Officer | 0 | — | 0 | Jun 12, 2026 · 4:35 pm EDT | Form 4 |
| Politan Capital Management LPrelationship not stated | — | 0 | 0 | Jun 12, 2026 · 4:38 pm EDT | Form 4 |
| Elisabeth A HellmannChief Human Resources Officer | 0 | — | 0 | Jun 12, 2026 · 4:32 pm EDT | Form 4 |
| Michelle BrennanDirector | 0 | — | 0 | Jun 12, 2026 · 4:36 pm EDT | Form 4 |
| Bilal MuhsinEVP, ENG, MKTG & REG | 0 | — | 0 | Sep 24, 2018 · 4:58 pm EDT | Form 4 |
| Micah W YoungEVP, Chief Financial Officer | 0 | — | 0 | Jun 12, 2026 · 4:30 pm EDT | Form 4 |
| Darlene J. S. SolomonDirector | 0 | — | 0 | Jun 12, 2026 · 4:40 pm EDT | Form 4 |
| Timothy J ScannellDirector | 0 | — | 0 | Jun 12, 2026 · 4:39 pm EDT | Form 4 |
| Catherine M. SzymanChief Executive Officer | 0 | — | 0 | Jun 12, 2026 · 4:30 pm EDT | Form 4 |
| Anand SampathEVP, Operations | 0 | — | 0 | Jun 12, 2026 · 4:34 pm EDT | Form 4 |
| Wendy E LaneDirector | 0 | — | 0 | Jun 12, 2026 · 4:39 pm EDT | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.