19 insiders reported 74 Form 4 transactions for MASIMO CORP (MASI) over the past 18 months (most recent 2026-06-12). Recent activity: LANE WENDY E (Director) Sell 2,608 shares, Sampath Anand (EVP, Operations) Sell 33,901 shares, Szyman Catherine M. (Chief Executive Officer) Sell 7,605 shares, Scannell Timothy J (Director) Sell 2,608 shares, Solomon Darlene J. S. (Director) Sell 3,015 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-12 | LANE WENDY E | Director | Sell | 2,608 | $469,440 |
| 2026-06-12 | Sampath Anand | EVP, Operations | Sell | 33,901 | $6.1M |
| 2026-06-12 | Szyman Catherine M. | Chief Executive Officer | Sell | 7,605 | $1.4M |
| 2026-06-12 | Scannell Timothy J | Director | Sell | 2,608 | $469,440 |
| 2026-06-12 | Solomon Darlene J. S. | Director | Sell | 3,015 | $542,700 |
| 2026-06-12 | Young Micah W | EVP, Chief Financial Officer | Sell | 25,656 | $4.6M |
| 2026-06-12 | Brennan Michelle | Director | Sell | 9,309 | $1.7M |
| 2026-06-12 | Hellmann Elisabeth A | Chief Human Resources Officer | Sell | 214 | $38,520 |
| 2026-06-12 | Politan Capital Management LP | Insider | Sell | 4.6M | $826.4M |
| 2026-06-12 | Hataishi Paul | SVP, Chief Accounting Officer | Sell | 13,317 | $2.4M |
| 2026-06-12 | Koffey Quentin | Insider | Sell | 4.6M | $826.4M |
| 2026-06-12 | Politan Capital Partners GP LLC | Insider | Sell | 4.6M | $826.4M |
| 2026-06-12 | Politan Capital Management GP LLC | Insider | Sell | 4.6M | $826.4M |
| 2026-05-05 | LANE WENDY E | Director | Buy | 1,225 | $0 |
| 2026-05-05 | Scannell Timothy J | Director | Buy | 1,225 | $0 |
| 2026-05-05 | Brennan Michelle | Director | Buy | 1,225 | $0 |
| 2026-05-05 | Hellmann Elisabeth A | Chief Human Resources Officer | Buy | 335 | $0 |
| 2026-05-05 | Hellmann Elisabeth A | Chief Human Resources Officer | Sell | 121 | $21,590 |
| 2026-03-16 | Szyman Catherine M. | CEO | Buy | 2,101 | $0 |
| 2026-03-16 | Szyman Catherine M. | CEO | Sell | 1,069 | $187,577 |
| 2026-03-16 | Young Micah W | EVP & Chief Financial Officer | Buy | 873 | $0 |
| 2026-03-16 | Young Micah W | EVP & Chief Financial Officer | Sell | 471 | $82,646 |
| 2026-03-03 | Young Micah W | EVP & Chief Financial Officer | Buy | 15,000 | $0 |
| 2026-03-03 | Young Micah W | EVP & Chief Financial Officer | Sell | 8,093 | $1.4M |
| 2026-02-26 | Young Micah W | EVP & Chief Financial Officer | Buy | 2,034 | $0 |
Source: SEC Form 4 filings · as of 2026-06-12