Sun Country Airlines Holdings, Inc. 8-K

What Happened

• Sun Country Airlines Holdings, Inc. (SNCY) confirmed the previously announced merger agreement with Allegiant Travel Company (announced Jan. 11, 2026). Allegiant’s Form S-4 was declared effective on March 31, 2026, and the joint proxy/prospectus was mailed to stockholders on or about March 31, 2026. Each company will hold a special stockholder meeting on May 8, 2026 to vote on the transaction.
• Following the announcement, two lawsuits challenging the mergers were filed in New York County Supreme Court (Weiss v. Sun Country, filed Apr. 16, 2026; Williams v. Sun Country, filed Apr. 17, 2026). Both companies also received demand letters from purported stockholders alleging disclosure deficiencies in the joint proxy/prospectus. Sun Country and Allegiant deny the allegations but voluntarily supplemented the joint proxy/prospectus to provide additional disclosures and to seek to avoid delay, nuisance or distraction.

Key Details

• Merger process and timing: Merger Agreement executed Jan. 11, 2026; Registration Statement (Form S-4) filed Mar. 27, 2026 and declared effective Mar. 31, 2026; special meetings set for May 8, 2026.
• Cash consideration: The merger provides $4.10 in cash per Sun Country share to holders (other than Allegiant and its affiliates), with the remainder of consideration in Allegiant stock per the merger agreement.
• Legal challenges: Two lawsuits filed (Weiss, Index No. 652273/2026; Williams, Index No. 652288/2026) and additional demand letters alleging disclosure deficiencies; companies supplemented the proxy to address those claims while denying wrongdoing.
• Financial context and valuation work: Allegiant management forecasts (example) show 2026E operating revenue ~$2,664M and 2026E net income ~$137M. Sun Country management forecasts (December) show 2026E operating revenue ~$1,170M and an adjusted EPS ~ $1.05 for 2026. Goldman Sachs’ illustrative analyses produced ranges for Sun Country standalone present value per share of $18.70–$22.90 and pro‑forma consideration per Sun Country share of $21.70–$30.75 (various analyses and assumptions disclosed in the supplement).

Why It Matters

• Shareholder vote and timing: The May 8, 2026 special meetings are material near-term events — stockholder approval is required to close the transaction. The registration statement and definitive joint proxy/prospectus contain the information investors will use to vote.
• Litigation and supplemental disclosures: The lawsuits and demand letters could delay closing or increase costs, though Sun Country and Allegiant state they believe the claims lack merit and have supplemented disclosures to reduce the chance of delay. Investors should watch for litigation developments.
• Valuation and deal economics: The filing includes updated management forecasts and adviser valuation analyses (including illustrative DCFs and precedent-premia analyses) that provide context on the deal’s implied value relative to Sun Country’s recent share price; these figures can help shareholders evaluate the fairness of the cash-plus-stock consideration.
• Where to find documents: The full Registration Statement (Form S-4), final prospectus and Sun Country’s definitive proxy are available on the SEC website and the companies’ investor relations pages; investors are urged to read those materials before voting.