X0303 4 2011-05-11 1 0001087432 INTERMUNE INC ITMN 0001075598 WARBURG PINCUS EQUITY PARTNERS LP C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 0 0 1 0 0001322709 Warburg Pincus Partners LLC C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 1 0 1 0 0000929408 WARBURG PINCUS & CO 450 LEXINGTON AVENUE NEW YORK NY 10017 1 0 1 0 0001162870 WARBURG PINCUS LLC C/O WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 0 0 1 0 0001239318 KAYE CHARLES R C/O WARBURG PINCUS & CO. 450 LEXINGTON AVE. NEW YORK NY 10017 0 0 1 0 0001220638 LANDY JOSEPH C/O WARBURG PINCUS & CO. 450 LEXINGTON AVE. NEW YORK NY 10017 0 0 1 0 Common Stock, par value $0.001 per share 2011-05-11 4 J 0 4999993 0 D 4485216 D See Note (1) in the Explanation of Responses on Exhibit 99.1 attached hereto. Exhibit List Exhibit 99.1 - Explanation of Responses Exhibit 99.2 - Joint Filers' Names and Addresses Exhibit 99.3 - Joint Filers' Signatures WARBURG, PINCUS EQUITY PARTNERS, L.P., By: Warburg Pincus Partners, LLC, its General Partner, By: Warburg Pincus & Co., its Managing Member, By: /s/ Scott A. Arenare, Partner 2011-05-12