Szyman Catherine M. 4
4 · MASIMO CORP · Filed Feb 13, 2026
Research Summary
AI-generated summary of this filing
Masimo (MASI) CEO Catherine Szyman Vests RSUs Worth $1.48M
What Happened
Catherine M. Szyman, CEO and Director of Masimo Corp (MASI), had 11,141 restricted stock units (RSUs) convert to common shares on February 12, 2026, with an aggregate reported value of $1,481,307 (11,141 × $132.96). Of those shares, 4,568 were withheld by the issuer to satisfy tax withholding obligations, leaving a net 6,573 shares issued to her. This was not an open-market purchase or sale but issuance upon vesting.
Key Details
- Transaction date: 2026-02-12; Form 4 filed 2026-02-13 (filed timely).
- Primary codes: M = exercise/conversion of derivative (RSU conversion); F = shares withheld to satisfy tax withholding.
- Gross shares converted: 11,141; shares withheld for taxes: 4,568; net shares delivered: 6,573.
- Reported per-share value for the conversion: $132.96; total reported value ≈ $1.48 million.
- Shares owned after the transaction are not disclosed in the provided filing.
- Footnote: These shares came from a 33,424-RSU grant made Feb 12, 2025 that vests ratably over three years (one-third vested 2/12/2026; remaining vest in equal installments on years 2 and 3).
Context
This was a routine vesting of RSUs rather than a market buy or sale. The withholding of 4,568 shares is a common cashless method employers use to cover required tax obligations on vested equity and does not imply a separate sale action by the insider. For retail investors, vested RSUs increase insider ownership (net +6,573 shares here) but are typically part of standard compensation schedules.
Insider Transaction Report
- Exercise/Conversion
Common Stock
2026-02-12$132.96/sh+11,141$1,481,307→ 11,141 total - Tax Payment
Common Stock
[F1]2026-02-12−4,568→ 6,573 total - Exercise/Conversion
Restricted Stock Units
[F2][F3]2026-02-12−11,141→ 22,283 totalExp: 2035-02-12→ Common Stock (11,141 underlying)
Footnotes (3)
- [F1]These shares were withheld by the Issuer in order to satisfy certain tax withholding obligations in connection with the issuance of shares upon the vesting of certain performance restricted stock units.
- [F2]Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU.
- [F3]As previously reported, the reporting person was granted 33,424 RSUs on February 12, 2025 and will vest ratably over three years. One-third of the RSUs vested on February 12, 2026, and the remaining RSUs will vest in two equal installments on the second and third anniversaries of the grant date.