---
schema_version: "secwatch.filing_event.v1"
accession: "0000937556-24-000012"
form_type: "8-K"
ticker: "MASI"
cik: "0000937556"
company_name: "MASIMO CORP"
filed_at: "2024-02-15T23:59:59+00:00"
generated_at: "2026-06-06T01:53:45.324808+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Masimo Director Adam Mikkelson resigns; Craig Reynolds named Audit Chair, Bob Chapek joins committees

## Summary
- Director Adam Mikkelson notified Board of resignation effective Feb 29, 2024, for personal reasons, not due to any disagreement with Masimo.
- Mikkelson served as Audit Committee Chair; Craig Reynolds appointed as Audit Committee Chair effective Feb 29, 2024.
- Bob Chapek appointed to Compensation Committee and Nominating, Compliance and Corporate Governance Committee, effective immediately.
- Mikkelson had served on the Board since October 2016 and chaired Audit, served on Compensation and Nominating committees.

## SEC filing metadata
- accession: 0000937556-24-000012
- form_type: 8-K
- ticker: MASI
- cik: 0000937556
- company_name: MASIMO CORP
- filed_at: 2024-02-15T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/937556/000093755624000012/0000937556-24-000012-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/937556/000093755624000012/masi-20240213.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000937556-24-000012
- JSON: https://secwatch.observer/filing/0000937556-24-000012.json
- Plain text: https://secwatch.observer/filing/0000937556-24-000012.txt

## Key facts
- Executive change
  Adam Mikkelson resigned as Director at MASIMO CORP.
  - Action: resigned
  - Role: Director
  source text: On February 13, 2024, Adam Mikkelson notified the Board of Directors (the “Board”) of Masimo Corporation (“Masimo”) of his decision to resign from the Board and all committees thereof, effective as of February 29, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/937556/000093755624000012/0000937556-24-000012-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.