---
schema_version: "secwatch.filing_event.v1"
accession: "0001493594-21-000075"
form_type: "8-K"
ticker: "MTSI"
cik: "0001493594"
company_name: "MACOM Technology Solutions Holdings, Inc."
filed_at: "2021-11-04T23:59:59+00:00"
generated_at: "2026-06-28T12:51:28.328909+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# MACOM Q4 revenue $155.2M (+5.4% YoY), adj. EPS $0.61; guides Q1 rev $157-161M

## Summary
- Q4 revenue $155.2M, up 5.4% YoY; GAAP net income $17.1M ($0.24 diluted EPS).
- Adjusted non-GAAP net income $43.3M ($0.61 diluted EPS) vs $27.6M ($0.40) in prior year Q4.
- FY2021 revenue $606.9M, up 14.5%; GAAP net income $38.0M vs loss of $46.1M in FY2020.
- Adjusted FY2021 EPS $2.15 vs $0.98 YoY; adjusted operating margin improved to 28.1%.
- Q1 FY2022 guidance: revenue $157-161M, adj. gross margin 60-62%, adj. EPS $0.60-0.64.

## SEC filing metadata
- accession: 0001493594-21-000075
- form_type: 8-K
- ticker: MTSI
- cik: 0001493594
- company_name: MACOM Technology Solutions Holdings, Inc.
- filed_at: 2021-11-04T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1493594/000149359421000075/0001493594-21-000075-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1493594/000149359421000075/mtsi-20211104.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493594-21-000075
- JSON: https://secwatch.observer/filing/0001493594-21-000075.json
- Plain text: https://secwatch.observer/filing/0001493594-21-000075.txt

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