Arena Resources, Inc. Announces Completion
of Texas Properties Acquisition
Acquisition Adds 945,000 Barrels of Oil Equivalent (BOE) To Company's Proved Reserves
Tulsa, Oklahoma — August 2, 2005 — Arena Resources, Inc. (AMEX: ARD, ARD.WS) ("Arena") ("Company") announced today that it has closed its previously announced acquisition of the Parrish Lease ("Lease") located in Andrews County, Texas for a purchase price of $1.2 million. The effective date of the acquisition is June 1, 2005.

Property Information
The Lease is comprised of six properties located in Andrews County in the Permian Basin of West Texas and consists of 720 acres with 17 producing wells and three saltwater disposal wells. A commercial saltwater disposal system, which currently nets approximately $5,000 per month, is included in the acquisition. Arena will be the operator and have a 100% working interest on 480 acres and 15-25% working interest on the remaining 240 acres. The net revenue interest on the 480 acres is approximately 75% and 10-19% on the 240 acres. The property is contiguous to the Company's Fuhrmann-Mascho Lease acquired in December 2004. In addition to the producing wells, Arena's engineering team has identified an additional ten locations for potential future drilling and development.

Production and Reserves
The current net production to the Company from this acquisition is approximately 30 BOE per day. The Company's initial reserve estimates, as reviewed by Lee Keeling & Associates, Inc., an independent reservoir engineering firm, indicate the lease has approximately 945,000 BOE (93% oil) of proved reserves net to Arena. This represents an estimated cost of $1.27 per BOE. The reserves are approximately 20% proved developed and 80% proved undeveloped. Based on commodity prices of $39.00 per barrel of oil and $4.88 per MCF of gas, the estimated present value of reserves, discounted at 10% (PV-10), is approximately $18.1 million.

Mr. Tim Rochford, President and CEO of Arena stated, "We continue to look for acquisitions that will compliment our existing properties. This acquisition allows us to add significant reserves and ten drilling locations to our current inventory in the Fuhrmann-Mascho at a very attractive price."

About Arena Resources, Inc.
Arena Resources, Inc. is an oil and gas exploration, development and production company with current operations in Texas, Oklahoma, Kansas and New Mexico.

This release contains forward-looking statements within the meaning of the "safe-harbor" provisions of the Private Securities Litigation Reform Act of 1995 that involve a wide variety of risks and uncertainties, including, without limitations, statements with respect to the Company's strategy and prospects. Readers and investors are cautioned that the Company's actual results may differ materially from those described in the forward-looking statements due to a number of factors, including, but not limited to, the Company's ability to acquire productive oil and/or gas properties or to successfully drill and complete oil and/or gas wells on such properties, general economic conditions both domestically and abroad, and the conduct of business by the Company, and other factors that may be more fully described in additional documents set forth by the Company.

For further information contact:
K M Financial, Inc.
Bill Parsons
480-947-1589
k-m-financial@msn.com