Form 4: Sun Country Airlines Merger Completion Filing

Christopher Mangione reports the disposition of Sun Country Airlines holdings following the company's acquisition by Allegiant Travel Company.

Summary

• Sun Country Airlines Holdings, Inc. has completed its merger with Allegiant Travel Company.
• The transaction involved a two-step merger process where Sun Country became a wholly owned subsidiary of Allegiant.
• Reporting person Christopher Mangione disposed of 10,682 shares of common stock as part of the merger consideration.
• The merger consideration consisted of $4.10 in cash per share and 0.1557 shares of Allegiant common stock per Sun Country share.
• Outstanding restricted stock units and performance-based restricted stock units were converted into Allegiant equity awards.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral administrative filing confirming the completion of a previously announced merger, which is a standard corporate event.

Positives

• Successful completion of the merger agreement dated January 11, 2026.
• Shareholders received a combination of cash and Allegiant stock, providing liquidity and ongoing exposure to the combined entity.

Negatives

• Sun Country Airlines Holdings, Inc. has ceased to exist as an independent publicly traded entity, now operating as a subsidiary of Allegiant.

Risks

• Integration risks associated with combining two airline operations.
• Market volatility affecting the value of the Allegiant common stock received as merger consideration.

Future Outlook

The company is now a wholly owned subsidiary of Allegiant Travel Company, and future performance will be tied to the integration and operational success of the combined airline group.

Management Comments

• The reporting person confirms the conversion of equity awards into Allegiant-based instruments following the merger.

Industry Context

StockSavvy.ai notes that this filing marks the finalization of a significant consolidation event in the U.S. airline sector, reflecting a broader trend of regional and low-cost carrier integration to achieve scale and operational efficiencies.

Comparison to Industry Standards

• The merger follows industry patterns of consolidation seen in recent years, similar to the Alaska Air Group and Hawaiian Airlines merger.
• The use of a cash-and-stock consideration structure is standard for airline industry acquisitions to balance immediate value for shareholders with long-term alignment.

Corporate Governance

Stakeholder Impact

• Shareholders have received merger consideration in exchange for their equity.
• Employees and customers will transition to the operational framework of the Allegiant parent company.

Next Steps

• Integration of Sun Country operations into Allegiant Travel Company systems.
• Ongoing management of converted equity awards under Allegiant's compensation plans.

Key Dates

Keywords

Sun Country Airlines, Allegiant Travel Company, Merger, Acquisition, SNCY, Form 4, Insider Transaction