---
schema_version: "secwatch.filing_event.v1"
accession: "0001185185-26-004973"
form_type: "8-K"
ticker: "PORT"
cik: "0002148436"
company_name: "Southport Acquisition Corp. II"
filed_at: "2026-10-23T20:30:27+00:00"
generated_at: "2026-10-23T20:32:07.276578+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Southport Acquisition Corp. II cancels 666,667 founder shares after underwriters waive remaining over-allotment

## Summary
- Sponsor Southport Acquisition Sponsor II LLC forfeited 666,667 Class B ordinary shares on Oct. 19, 2026; shares were cancelled by the Company.
- Underwriters forfeited their right to exercise the remaining portion of the over-allotment option, leaving 1,000,000 Class B shares no longer subject to forfeiture.
- Sponsor held 7,666,667 Class B shares at IPO close on Oct. 2, 2026, of which up to 1,000,000 were contingent on over-allotment exercise.
- IPO of 21,000,000 units at $10.00 each, including 1,000,000 over-allotment units, generated $210,000,000 in gross proceeds.
- Each unit comprises one Class A share and one-half warrant exercisable at $11.50 per share upon an initial business combination.

## SEC filing metadata
- accession: 0001185185-26-004973
- form_type: 8-K
- ticker: PORT
- cik: 0002148436
- company_name: Southport Acquisition Corp. II
- filed_at: 2026-10-23T20:30:27+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2148436/000118518526004973/0001185185-26-004973-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2148436/000118518526004973/southacq28k102326.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001185185-26-004973
- JSON: https://secwatch.observer/filing/0001185185-26-004973.json
- Plain text: https://secwatch.observer/filing/0001185185-26-004973.txt

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