Susan Mahony Lilly Corporate Center Indianapolis, Indiana 46285 Securities and Exchange Commission Washington, D.C. 20549 Authorization Regarding Reporting Forms I hereby authorize and designate the following persons to sign and file with the Commission on my behalf Forms 3, 4 and 5 (including any amendments thereto) covering my transactions and holdings in the common stock and other equity securities of Eli Lilly and Company as required by Section 16 of the Securities Exchange Act of 1934 and the rules thereunder: Michael J. Harrington, Lilly Corporate Center, Indianapolis, Indiana James B. Lootens, Lilly Corporate Center, Indianapolis, Indiana Tiffany R. Benjamin, Lilly Corporate Center, Indianapolis, Indiana This authorization and designation shall remain in effect until a written revocation is signed by me and provided to the Commission. October 22, 2015 /s/ Susan Mahony