---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-122065"
form_type: "8-K"
ticker: "CNDA"
cik: "0001851959"
company_name: "Concord Acquisition Corp II"
filed_at: "2025-12-17T23:59:59+00:00"
generated_at: "2026-05-16T12:56:47.768081+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Concord Acquisition Corp II extends business combination deadline to Dec 31, 2026

## Summary
- Stockholders approved charter amendment extending deadline from Dec 31, 2025 to Dec 31, 2026.
- 92% of shares voted (6,483,505 shares); 6,483,503 FOR, 2 AGAINST, no abstentions or broker non-votes.
- No holders of Class A common stock exercised redemption rights; trust account remains ~$99,263.
- Shares trade on OTC: Class A under CNDA, units under CNDA.U, warrants under CNDA.WS.

## SEC filing metadata
- accession: 0001104659-25-122065
- form_type: 8-K
- ticker: CNDA
- cik: 0001851959
- company_name: Concord Acquisition Corp II
- filed_at: 2025-12-17T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.03, 5.07, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1851959/000110465925122065/0001104659-25-122065-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1851959/000110465925122065/tm2533628d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-122065
- JSON: https://secwatch.observer/filing/0001104659-25-122065.json
- Plain text: https://secwatch.observer/filing/0001104659-25-122065.txt

## Key facts
- Governance Changes
  Concord Acquisition Corp II: Stockholders approved an amendment to extend the deadline for consummating a business combination from December 31, 2025 to December 31, 2026 (effective 2025-12-16).
  - Change: charter amendment
  - Effective: 2025-12-16
  source text: As approved by its stockholders at the Special Meeting, the Company filed an amendment to its amended and restated certificate of incorporation with the Delaware Secretary of State on December 16, 2025 (the “ Charter Amendment ”), to extend the date by which the Company has to consummate a business combination from December 31, 2025 (the “ Termination Date ”) to December 31, 2026 (the “ Extended Date ”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1851959/000110465925122065/0001104659-25-122065-index.htm

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