---
schema_version: "secwatch.filing_event.v1"
accession: "0000937556-24-000102"
form_type: "8-K"
ticker: "MASI"
cik: "0000937556"
company_name: "MASIMO CORP"
filed_at: "2024-10-29T23:59:59+00:00"
generated_at: "2026-05-30T09:33:18.396657+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Masimo terminates CEO Joe Kiani; reaffirms non-GAAP guidance for Q3 and FY 2024

## Summary
- Board terminated CEO Joe Kiani effective Oct 24, 2024 following review by outside counsel.
- Michelle Brennan appointed as Interim CEO.
- Reaffirms non-GAAP guidance for Q3 2024 and full year 2024, including healthcare segment revenue.
- Company continues evaluation of strategic alternatives for its consumer segment.

## SEC filing metadata
- accession: 0000937556-24-000102
- form_type: 8-K
- ticker: MASI
- cik: 0000937556
- company_name: MASIMO CORP
- filed_at: 2024-10-29T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 2.02, 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/937556/000093755624000102/0000937556-24-000102-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/937556/000093755624000102/masi-20241024.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000937556-24-000102
- JSON: https://secwatch.observer/filing/0000937556-24-000102.json
- Plain text: https://secwatch.observer/filing/0000937556-24-000102.txt

## Key facts
- Executive change
  Joe Kiani was terminated as Chief Executive Officer at MASIMO CORP.
  - Action: terminated
  - Role: Chief Executive Officer
  source text: Following a review by outside counsel, on October 24, 2024, the Board of Directors (the “Board”) of Masimo adopted resolutions to terminate the employment of Masimo’s Chief Executive Officer, Joe Kiani, effective October 24, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/937556/000093755624000102/0000937556-24-000102-index.htm
- Executive change
  Michelle Brennan was appointed as Interim Chief Executive Officer at MASIMO CORP.
  - Action: appointed
  - Role: Interim Chief Executive Officer
  source text: As previously reported, the Board has appointed Michelle Brennan as Interim Chief Executive Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/937556/000093755624000102/0000937556-24-000102-index.htm

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