Form 4: Director Patrick O'Keeffe Reports Sun Country Merger Exit

Director Patrick O'Keeffe reports the disposal of all Sun Country Airlines holdings following the company's acquisition by Allegiant Travel Company.

Summary

• Director Patrick J. O'Keeffe disposed of his entire beneficial ownership of 39,093 shares of Sun Country Airlines common stock.
• The transaction occurred on May 13, 2026, as a result of the completed merger between Sun Country Airlines and Allegiant Travel Company.
• The 39,093 shares consisted of 28,703 directly held common shares and 10,390 restricted stock units (RSUs).
• All RSUs held by the director became fully vested immediately prior to the merger's effective time.
• The director received a combination of cash ($4.10 per share) and Allegiant Travel Company common stock (0.1557 exchange ratio) for his holdings.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral administrative filing documenting the final exit of a director following a previously announced and completed corporate merger.

Positives

• The merger successfully closed, providing liquidity to shareholders.
• Restricted stock units held by the director were fully vested upon the merger's completion.

Negatives

• The reporting person no longer holds any equity interest in the issuer as the entity has been converted into a subsidiary of Allegiant Travel Company.

Risks

• Integration risks associated with the merger between Sun Country Airlines and Allegiant Travel Company.

Future Outlook

The issuer, Sun Country Airlines Holdings, Inc., has been converted into Sun Country Airlines Holdings, LLC, a direct wholly owned subsidiary of Allegiant Travel Company.

Industry Context

StockSavvy.ai notes that this filing confirms the finalization of the consolidation between two major low-cost carriers, reflecting broader industry trends toward airline sector M&A to achieve scale and operational synergies.

Comparison to Industry Standards

• The merger follows a trend of consolidation in the U.S. airline industry, similar to other recent high-profile airline acquisitions aimed at expanding network reach and fleet efficiency.

Corporate Governance

Stakeholder Impact

• Shareholders have received the merger consideration as defined in the agreement.

Next Steps

• None, as the reporting person no longer holds securities in the issuer.

Key Dates

Keywords

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