X0306 4 2013-04-16 0 0001117480 CHIMERIX INC CMRX 0001198321 CHAMPSI FARAH ONE EMBARCADERO CENTER, 37TH FLOOR SAN FRANCISCO CA 94111 1 0 0 0 Common Stock 2013-04-16 4 C 0 826474 A 826474 I See Footnote Common Stock 2013-04-16 4 C 0 688729 A 1515203 I See Footnote Common Stock 2013-04-16 4 C 0 550982 A 2161829 I See Footnote Series D Preferred Stock 2012-04-16 4 C 0 2933986 0.00 D Common Stock 826474 0 I See Footnote Series E Preferred Stock 2012-04-16 4 C 0 2444990 0.00 D Common Stock 688729 0 I See Footnote Series F Preferred Stock 2012-04-16 4 C 0 1955991 0.00 D Common Stock 550982 0 I See Footnote Upon the closing of the Issuer's initial public offering, every 3.55 shares of Series D Preferred Stock automatically converted into 1 share of Common Stock for no additional consideration and had no expiration date. See attached Exhibit 99.1 Upon the closing of the Issuer's initial public offering, every 3.55 shares of Series E Preferred Stock automatically converted into 1 share of Common Stock for no additional consideration and had no expiration date. Upon the closing of the Issuer's initial public offering, every 3.55 shares of Series F Preferred Stock automatically converted into 1 share of Common Stock for no additional consideration and had no expiration date. Includes an aggregate of 95,644 shares issued as payment of accrued dividends on the Series F Preferred Stock held as follows: 87,602 shares held by Alta Biopharma Partners III, L.P., 5,883 shares held by Alta Biopharma Partners III GmbH & Co. Beteiligungs KG and 2,159 shares held by Alta Embarcadero Biopharma Partners III, LLC. /s/ Farah Champsi 2013-04-16