UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2025 OR For the Transition Period from _________ to _______ COMMISSION FILE NUMBER 001-38661 Elanco Animal Health Incorporated (Exact name of Registrant as specified in its charter) (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) INDIANA 82-54 ...