X0304 4 2011-12-15 0 0001340282 Rosetta Resources Inc. ROSE 0001533602 Hagale John E 717 TEXAS SUITE 2800 HOUSTON TX 77002 0 1 0 0 ExecVP, CFO & Treasurer Common Stock 2011-12-15 2011-12-15 4 P 0 5000 41.49 A 18910 D This transaction was executed in multiple trades at prices ranging from $41.4683 to $41.50. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. /s/ Michael Hickey for John E. Hagale 2011-12-15