Allegiant Travel CO 8-K

What Happened
Allegiant Travel Company (Allegiant) reported that it has progressed its planned acquisition of Sun Country Airlines Holdings, Inc. (Sun Country). The parties entered into an Agreement and Plan of Merger on January 11, 2026 to effect a two-step merger. On March 16, 2026 Allegiant and Sun Country announced the early termination of the Hart‑Scott‑Rodino (HSR) Act waiting period, a key regulatory milestone for the transaction.

Key Details

• Merger agreement date: January 11, 2026.
• Structure: two-step merger — Mirage Merger Sub, Inc. (an Allegiant subsidiary) will merge into Sun Country (First Merger), then Sun Country will merge into Sawdust Merger Sub, LLC (an Allegiant subsidiary) with Sawdust surviving as an Allegiant subsidiary.
• Regulatory milestone: HSR waiting period expired/was terminated early and was announced March 16, 2026. The HSR clearance was a condition to closing but other closing conditions remain.
• Next steps: Allegiant intends to file a Form S-4 registration statement and a joint proxy statement/prospectus for stockholder approvals; detailed risk disclosures and solicitation participant information will be included in those filings.

Why It Matters
The early termination of the HSR waiting period clears an important antitrust procedural step, allowing the merger process to move forward toward the required filings and stockholder votes. Investors should note the transaction remains subject to additional conditions (including stockholder and other regulatory approvals) and that Allegiant will provide further details, risks and voting materials in the forthcoming Form S-4 and joint proxy statement/prospectus.