X0303 4 2011-02-17 0 0001084048 J2 GLOBAL COMMUNICATIONS INC JCOM 0001198455 CRESCI ROBERT J 6922 HOLLYWOOD BLVD. LOS ANGELES CA 90028 1 0 0 0 Common Stock, $0.01 par value 2011-02-17 4 M 0 10000 1.03 A 55737 D Common Stock, $0.01 par value 2011-02-17 4 S 0 10000 29.2288 D 45737 D Option to Purchase Common Stock 1.03 2011-02-17 4 M 0 10000 0 A 2005-03-28 2011-12-28 Common Stock, $0.01 par value 10000 356740 D These shares were acquired upon exercise of stock options under the Issuer's Second Amended and Restated 1997 Stock Option Plan identified as exercised in Part II of this Form 4. Reflects aggregate reporting of multiple open market transactions. The price reported is the weighted average sale price of sales ranging from $29.19 to $29.29 per share. The Reporting Person hereby undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each price. Includes 22,270 shares of restricted stock which remain subject to vesting. Employee stock option granted for services rendered, no value placed on services rendered. /s/ Robert J. Cresci 2011-02-21