---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-134870"
form_type: "8-K"
ticker: "APTOF"
cik: "0000882361"
company_name: "Aptose Biosciences Inc."
filed_at: "2026-03-31T23:59:59+00:00"
generated_at: "2026-05-15T08:19:06.296335+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Aptose shareholders approve continuance to Alberta and Hanmi acquisition arrangement

## Summary
- Continuance from CBCA to Alberta approved with 92.42% votes in favor.
- Arrangement with Hanmi (HS North America Ltd.) approved with 84.87% votes in favor.
- Arrangement announced Nov 19, 2025; Hanmi to acquire all outstanding shares not already owned.
- Special meeting held March 31, 2026; all items passed.

## SEC filing metadata
- accession: 0001193125-26-134870
- form_type: 8-K
- ticker: APTOF
- cik: 0000882361
- company_name: Aptose Biosciences Inc.
- filed_at: 2026-03-31T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/882361/000119312526134870/0001193125-26-134870-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/882361/000119312526134870/d13408d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-134870
- JSON: https://secwatch.observer/filing/0001193125-26-134870.json
- Plain text: https://secwatch.observer/filing/0001193125-26-134870.txt

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