---
schema_version: "secwatch.filing_event.v1"
accession: "0000937556-23-000010"
form_type: "8-K"
ticker: "MASI"
cik: "0000937556"
company_name: "MASIMO CORP"
filed_at: "2023-02-28T23:59:59+00:00"
generated_at: "2026-06-18T23:10:14.408126+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Masimo appoints Paul Hataishi as SVP, Chief Accounting Officer; Micah Young remains CFO

## Summary
- Paul Hataishi appointed SVP, Chief Accounting Officer effective Feb 27, 2023, serving as principal accounting officer.
- Hataishi previously served as SVP Global Accounting since Jan 2023 and VP Business Integration from Mar 2022.
- Micah Young, EVP & CFO, no longer serves as principal accounting officer but remains CFO.
- No material new compensation arrangements or awards granted in connection with the appointment.
- Hataishi is a CPA (California) with a B.S. in Accounting from USC.

## SEC filing metadata
- accession: 0000937556-23-000010
- form_type: 8-K
- ticker: MASI
- cik: 0000937556
- company_name: MASIMO CORP
- filed_at: 2023-02-28T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/937556/000093755623000010/0000937556-23-000010-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/937556/000093755623000010/masi-20230227.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000937556-23-000010
- JSON: https://secwatch.observer/filing/0000937556-23-000010.json
- Plain text: https://secwatch.observer/filing/0000937556-23-000010.txt

## Key facts
- Executive change
  Micah Young changed role as Executive Vice President and Chief Financial Officer at MASIMO CORP.
  - Action: no longer serves as principal accounting officer
  - Role: Executive Vice President and Chief Financial Officer
  source text: In connection with the appointment of Mr. Hataishi as Masimo’s Senior Vice President, Chief Accounting Officer, effective February 27, 2023, Micah Young, Masimo’s Executive Vice President and Chief Financial Officer, no longer serves as Masimo’s principal accounting officer but will remain as Masimo’s principal financial officer, continuing to serve as Masimo’s Executive Vice President & Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/937556/000093755623000010/0000937556-23-000010-index.htm
- Executive change
  Paul Hataishi was appointed as Senior Vice President, Chief Accounting Officer at MASIMO CORP.
  - Action: appointed
  - Role: Senior Vice President, Chief Accounting Officer
  source text: On February 27, 2023 , Masimo Corporation (“Masimo”) appointed Paul Hataishi, age 48 , as its Senior Vice President, Chief Accounting Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/937556/000093755623000010/0000937556-23-000010-index.htm

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