---
schema_version: "secwatch.filing_event.v1"
accession: "0001493594-21-000085"
form_type: "8-K"
ticker: "MTSI"
cik: "0001493594"
company_name: "MACOM Technology Solutions Holdings, Inc."
filed_at: "2021-12-27T23:59:59+00:00"
generated_at: "2026-06-27T22:18:31.460143+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# MACOM sells Ampere stake for $127.7M cash; expects substantial gain

## Summary
- Sold entire non-controlling equity interest in Ampere (under 10%) to an Oracle affiliate on Dec 23, 2021.
- Cash consideration of approx. $127.7M, a predetermined fixed price set in 2017.
- Carrying value of investment was $12.8M as of Oct 1, 2021, implying a large gain.
- Gain will be recognized in fiscal Q1 ending Dec 31, 2021.
- Ampere was formed in 2017 when MACOM divested its ARM-based compute processor business.

## SEC filing metadata
- accession: 0001493594-21-000085
- form_type: 8-K
- ticker: MTSI
- cik: 0001493594
- company_name: MACOM Technology Solutions Holdings, Inc.
- filed_at: 2021-12-27T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1493594/000149359421000085/0001493594-21-000085-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1493594/000149359421000085/mtsi-20211223.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493594-21-000085
- JSON: https://secwatch.observer/filing/0001493594-21-000085.json
- Plain text: https://secwatch.observer/filing/0001493594-21-000085.txt

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