LII: Leadership change · Company disclosure

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On October 30, 2026, Joseph F. Nassab, Executive Vice President & President, Building Climate Solutions, notified Lennox International Inc. (the “Company”) of his decision to retire from his current role on December 31, 2026. At that time, Mr. Nassab will transition to a new role with the Company as a Strategic Advisor. Effective January 1, 2027, Geoffrey Dethlefsen, who is currently serving as Vice President and General Manager, Lennox Commercial HVAC, will succeed Mr. Nassab as Executive Vice President & President, Building Climate Solutions of the Company. In connection with his transition to a Strategic Advisor role, on November 2, 2026, Mr. Nassab entered into a transition agreement (the “Transition Employment Agreement”) with the Company, which will supersede his previous employment agreement. The Transition Employment Agreement will be effective January 1, 2027, and will continue through February 28, 2028 (the “Advisory Period”). During the Advisory Period, Mr. Nassab will report to the Chief Executive Officer and perform services including supporting relationship continuity with key customers, distributors, and strategic partners; mentoring, coaching, and advising key leaders; and advising on special projects, where applicable. As compensation for these services, Mr. Nassab will receive an annual salary of $180,000, continue to participate in the Company’s benefit plans and programs in accordance with their terms, and be eligible for continuing vesting of his outstanding equity-based awards in accordance with their terms. The Transition Employment Agreement also includes confidentiality, non-competition, and