---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-124545"
form_type: "8-K"
ticker: null
cik: "0001898474"
company_name: "Signing Day Sports, Inc."
filed_at: "2025-12-22T23:59:59+00:00"
generated_at: "2026-05-16T12:27:48.029754+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Signing Day Sports amends business combination agreement with One Blockchain, extends outside date

## Summary
- Outside date for closing extended from Dec 31, 2025 to Feb 17, 2026.
- If SEC declares S-4 effective by Feb 17, 2026, outside date further extends to Apr 30, 2026.
- Provision requiring issuance of super voting preferred shares upon One Blockchain's request removed.
- Agreement originally dated May 27, 2025, previously amended Nov 10, 2025; latest amendment Dec 21, 2025.

## SEC filing metadata
- accession: 0001213900-25-124545
- form_type: 8-K
- cik: 0001898474
- company_name: Signing Day Sports, Inc.
- filed_at: 2025-12-22T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1898474/000121390025124545/0001213900-25-124545-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1898474/000121390025124545/ea0270524-8k425_signing.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-124545
- JSON: https://secwatch.observer/filing/0001213900-25-124545.json
- Plain text: https://secwatch.observer/filing/0001213900-25-124545.txt

## Key facts
- Material Agreements
  Signing Day Sports, Inc. amended Amendment No. 2 to the Business Combination Agreement with One Blockchain LLC valued at Amended Business Combination Agreement among Signing Day Sports, BlockchAIn Digital Infrastructure, (effective 2025-12-21).
  - Action: amendment
  - Agreement: asset purchase
  - Counterparty: One Blockchain LLC
  - Value: Amended Business Combination Agreement among Signing Day Sports, BlockchAIn Digital Infrastructure,
  - Effective: 2025-12-21
  source text: On December 21, 2025, Signing Day Sports, Inc., a Delaware corporation (the “Company” or “Signing Day Sports”), entered into the Amendment No. 2 to the Business Combination Agreement (the “Amendment”) with One Blockchain LLC, a Delaware limited liability company (“One Blockchain”), BlockchAIn Digital Infrastructure, Inc., a Delaware corporation (“BlockchAIn”), BCDI Merger Sub I Inc., a Delaware corporation and a wholly owned subsidiary of BlockchAIn (“Merger Sub I”), and BCDI Merger Sub II LLC, a Delaware limited liability company and a wholly owned subsidiary of BlockchAIn (“Merger Sub II”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1898474/000121390025124545/0001213900-25-124545-index.htm

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