---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-26-017518"
form_type: "8-K"
ticker: "SNCY"
cik: "0001743907"
company_name: "Sun Country Airlines Holdings, Inc."
filed_at: "2026-04-28T23:59:59+00:00"
generated_at: "2026-05-15T02:56:46.288639+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Sun Country and Allegiant disclose merger-related lawsuits and supplemental proxy disclosures

## Summary
- Two lawsuits filed in New York Supreme Court on Apr 16-17, 2026 challenging the Sun Country-Allegiant merger, plus demand letters from stockholders.
- Sun Country and Allegiant voluntarily supplement the joint proxy statement with revised financial projections for 2025-2029.
- Goldman Sachs DCF analysis valued Sun Country standalone at $18.70-$22.90 per share and pro forma combined at $21.70-$30.75 per share.
- Special stockholder meetings for both companies to vote on the merger are set for May 8, 2026.

## SEC filing metadata
- accession: 0001140361-26-017518
- form_type: 8-K
- ticker: SNCY
- cik: 0001743907
- company_name: Sun Country Airlines Holdings, Inc.
- filed_at: 2026-04-28T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1743907/000114036126017518/0001140361-26-017518-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1743907/000114036126017518/ef20071722_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-26-017518
- JSON: https://secwatch.observer/filing/0001140361-26-017518.json
- Plain text: https://secwatch.observer/filing/0001140361-26-017518.txt

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