Rosetta Resources Inc. Announces Closing Of Exchange Offer For Its 9.500% Senior Notes Due 2018

HOUSTON, Sept. 24, 2010 (GLOBE NEWSWIRE) -- Rosetta Resources Inc. ("Rosetta") (Nasdaq:ROSE) announced today that it has completed its offer to exchange up to $200 million aggregate principal amount of its 9.500% Senior Notes due 2018 (the "Exchange Notes") for any and all of its outstanding 9.500% Senior Notes due 2018, which were issued in a private placement (the "Private Notes").

The registered exchange offer, which expired at 5:00 p.m., New York City time, on September 21, 2010, fulfilled Rosetta's obligations regarding the registration of its outstanding Private Notes, which were issued on April 12, 2010. According to a registration rights agreement entered into by Rosetta in connection with the sale of the Private Notes, Rosetta agreed to file a registration statement with the Securities and Exchange Commission relating to the exchange offer.

Rosetta exchanged all of its Exchange Notes for all of the Private Notes that were tendered by the holders of those notes. The Exchange Notes contain substantially identical terms to the Private Notes.

ABOUT ROSETTA

Rosetta Resources Inc. is an independent oil and gas company engaged in the acquisition, exploration, development and production of oil and gas properties in North America. Its operations are concentrated in South Texas, the Rocky Mountains and the Sacramento Basin of California. Rosetta is a Delaware corporation based in Houston, Texas.

For more information, visit www.rosettaresources.com.

The Rosetta Resources Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=3139

[ROSE-F]

Forward-Looking Statements:

All statements, other than statements of historical fact, included in this release are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based upon current expectations and are subject to a number of risks, uncertainties and assumptions, which are more fully described in Rosetta's Annual Report on Form 10-K and Quarterly Reports on Form 10-Q filed with the Securities and Exchange Commission. These risks, uncertainties and assumptions could cause actual results to differ materially from those described in the forward-looking statements. Rosetta assumes no obligation and expressly disclaims any duty to update the information contained herein except as required by law.

CONTACT: Rosetta Resources Inc.
         Investor Contact:
         Michael J. Rosinski, Executive Vice President,
          Chief Financial Officer and Treasurer
         [phone]
         [e-mail]

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