---
schema_version: "secwatch.filing_event.v1"
accession: "0000937556-25-000079"
form_type: "8-K"
ticker: "MASI"
cik: "0000937556"
company_name: "MASIMO CORP"
filed_at: "2025-05-06T23:59:59+00:00"
generated_at: "2026-05-22T15:58:31.334932+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Masimo Q1 non-GAAP EPS $1.36 (+56% YoY); core revenue $372M (+10%); FY guidance cut on tariffs

## Summary
- GAAP revenue $372M, up 10% YoY; non-GAAP EPS $1.36, up 56% from prior year.
- Discontinued ops (Sound United) loss of $218M including $295M impairment; held-for-sale.
- FY2025 guidance: non-GAAP revenue $1.5B-$1.53B; non-GAAP EPS $4.80-$5.15, includes tariff impact.
- Prior FY guidance (ex-tariffs) was EPS $5.30-$5.60; mitigation plans being developed.
- CEO Katie Szyman cites strong core healthcare earnings power and double-digit growth.

## SEC filing metadata
- accession: 0000937556-25-000079
- form_type: 8-K
- ticker: MASI
- cik: 0000937556
- company_name: MASIMO CORP
- filed_at: 2025-05-06T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/937556/000093755625000079/0000937556-25-000079-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/937556/000093755625000079/masi-20250506.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000937556-25-000079
- JSON: https://secwatch.observer/filing/0000937556-25-000079.json
- Plain text: https://secwatch.observer/filing/0000937556-25-000079.txt

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