---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-108353"
form_type: "8-K"
ticker: "CLYD"
cik: "0002094256"
company_name: "BEACON TOPCO, INC."
filed_at: "2026-09-16T23:54:59+00:00"
generated_at: "2026-09-17T10:05:48.023020+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Beacon Topco completes Barinthus Bio acquisition; launches $15M share tender offer

## Summary
- Acquisition of Barinthus Biotherapeutics closed via UK scheme of arrangement effective Sept 9, 2026; Barinthus now wholly-owned subsidiary.
- Cash tender offer launched Sept 15, 2026 to buy up to $15M of Beacon Topco common stock at $6.6609 per share, net to seller, no interest.
- Amended and restated certificate of incorporation adopted effective Sept 9, 2026; amended and restated bylaws effective Sept 8, 2026.
- Merger Agreement dated Sept 29, 2025, as amended Feb 22, 2026, governed the transaction.

## SEC filing metadata
- accession: 0001104659-26-108353
- form_type: 8-K
- ticker: CLYD
- cik: 0002094256
- company_name: BEACON TOPCO, INC.
- filed_at: 2026-09-16T23:54:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 3.03, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2094256/000110465926108353/0001104659-26-108353-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2094256/000110465926108353/tm2625583d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-108353
- JSON: https://secwatch.observer/filing/0001104659-26-108353.json
- Plain text: https://secwatch.observer/filing/0001104659-26-108353.txt

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