---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-26-026395"
form_type: "8-K"
ticker: "ON"
cik: "0001097864"
company_name: "ON SEMICONDUCTOR CORP"
filed_at: "2026-06-25T20:55:15+00:00"
generated_at: "2026-06-25T20:56:17.709743+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# onsemi to acquire Synaptics for ~$7B in stock; exchange ratio 1.350

## Summary
- Total enterprise value approximately $7 billion; Synaptics holders receive 1.350 onsemi shares per SYNA share.
- Synaptics equityholders to own about 12% of combined company on pro forma basis post-closing.
- Closing expected mid-2027, subject to Synaptics stockholder vote, HSR, antitrust/foreign investment approvals, and other conditions.
- Termination fee of $235M payable by Synaptics under certain circumstances; $320M regulatory termination fee payable by onsemi.
- onsemi targets incremental $30B TAM, reaching $243B by 2030, focusing on Power, Sense, Compute, Control for Physical AI.

## SEC filing metadata
- accession: 0001140361-26-026395
- form_type: 8-K
- ticker: ON
- cik: 0001097864
- company_name: ON SEMICONDUCTOR CORP
- filed_at: 2026-06-25T20:55:15+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1097864/000114036126026395/0001140361-26-026395-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1097864/000114036126026395/ef20076747_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-26-026395
- JSON: https://secwatch.observer/filing/0001140361-26-026395.json
- Plain text: https://secwatch.observer/filing/0001140361-26-026395.txt

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