On December 20, 2012, Pinnacle agreed to acquire Ameristar Casinos, Inc. in an all cash transaction valued at $26.50 per Ameristar share or total consideration of $2.8 billion including assumed debt. Ameristar owns and operates casino facilities in St. Charles near St. Louis, Mo.; Kansas City, Mo.; Council Bluffs, Iowa; Black Hawk, Colo.; Vicksburg, Miss.; East Chicago, Ind.; and the Jackpot properties in Jackpot, Nev.The Pinnacle Entertainment, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=13121 About Ameristar Casinos Ameristar Casinos is an innovative casino gaming company featuring the newest and most popular slot machines. Ameristar's 7,200 dedicated team members pride themselves on delivering consistently friendly and appreciative service to their guests. Ameristar continuously strives to increase the loyalty of its guests through the quality of its slot machines, table games, hotel, dining and other leisure offerings. Ameristar's eight casino hotel properties primarily serve guests from Colorado, Idaho, Illinois, Indiana, Iowa, Kansas, Louisiana, Mississippi, Missouri, Nebraska and Nevada. Ameristar has been a public company since 1993, and its stock is traded on the NASDAQ Global Select Market. Ameristar generates more than $1.1 billion in net revenues annually. The Ameristar Casinos, Inc. Logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=16403 Important Information Regarding Forward-Looking Statements Forward-Looking Statements This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on Pinnacle's and Ameristar's current expectations and are subject to uncertainty and changes in circumstances. These forward-looking statements include, among others, statements regarding the expected synergies and benefits of a potential combination of Pinnacle and Ameristar, including the expected accretive effect of the merger on Pinnacle's financial results and profile (e.g., free cash flow, earnings per share and Consolidated Adjusted EBITDA); the anticipated benefits of geographic diversity that would result from the merger and the expected results of Ameristar's gaming properties; expectations about future business plans, prospective performance and opportunities; required regulatory approvals; the expected timing of the completion of the transaction; and the anticipated financing of the transaction. These forward-looking statements may be identified by the use of words such as "expect," "anticipate," "believe," "estimate," "potential," "should," "could," "would," "will," or similar words intended to identify information that is not historical in nature. The inclusion of such statements should not be regarded as a representation that such plans, estimates or expectations will be achieved. There is no assurance that the potential transaction will be consummated, and there are a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements made herein. These risks and uncertainties include (a) the timing to consummate a potential transaction between Pinnacle and Ameristar; (b) the ability and timing to obtain required regulatory approvals (including approval from gaming regulators) and satisfy or waive other closing conditions; (c) the ability to obtain the approval of Ameristar's stockholders; (d) the possibility that the merger does not close when expected or at all, or that the companies may be required to modify aspects of the merger to achieve regulatory approval; (e) Pinnacle's ability to realize the synergies contemplated by a potential transaction; (f) Pinnacle's ability to promptly and effectively integrate the business of Pinnacle and Ameristar; (g) the requirement to satisfy closing conditions to the merger as set forth in the merger agreement, including expiration of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976; (h) uncertainties in the global economy and credit markets and its potential impact on Pinnacle's ability to finance the transaction; (i) the outcome of any legal proceedings that may be instituted in connection with the transaction; (j) the ability to retain certain key employees of Ameristar; (k) that there may be a material adverse change of Pinnacle or Ameristar, or the respective businesses of Pinnacle or Ameristar may suffer as a result of uncertainty surrounding the transaction; (l) Pinnacle's ability to obtain financing on the terms expected, or at all; and (m) the risk factors disclosed in Pinnacle's most recent Annual Report on Form 10-K/A, which Pinnacle filed with the Securities and Exchange Commission on May 16, 2012 and the risk factors disclosed in Ameristar's most recent Annual Report on Form 10-K, which Ameristar filed with the Securities and Exchange Commission on February 28, 2012 and in all reports on Forms 10-K, 10-Q and 8-K filed with the Securities and Exchange Commission by Pinnacle and Ameristar subsequent to the filing of their respective Forms 10-K for the year ended December 31, 2011. Forward-looking statements reflect Pinnacle's and Ameristar's management's analysis as of the date of this report. Pinnacle and Ameristar do not undertake to revise these statements to reflect subsequent developments, except as required under the federal securities laws. Readers are cautioned not to place undue reliance on any of these forward-looking statements.