KMG Chemicals to Transfer Stock Exchange Listing to NYSE

HOUSTON--(BUSINESS WIRE)--

KMG Chemicals, Inc. KMGB announced today it will transfer the listing of its common stock to the New York Stock Exchange (NYSE) from the NASDAQ Global Select Market (NASDAQ). The Company expects to begin trading on the NYSE on June 20, 2012 under the symbol “KMG”, but will continue to trade on NASDAQ until the transfer takes place.

“KMG is a leading supplier of specialty chemicals to major semiconductor and industrial wood treating customers around the world,” said J. Neal Butler, President and CEO of KMG Chemicals. “KMG enjoyed 15 productive years listed on NASDAQ, which proved a valuable partner over the years. As the company continues to grow, we believe that NYSE Euronext, the world's largest stock exchange, will help broaden our visibility with our key suppliers, customers and peers. We are proud to announce this milestone in the company's development and believe the NYSE ‘s advanced trading platform will best serve the long-term interests of our current and future shareholders.”

"KMG Chemicals will be a welcome and valued addition to the NYSE listed company community," said Scott R. Cutler, EVP and Co-Head of U.S. Listings and Cash Execution, NYSE Euronext. "A leader in the manufacture, formulation and distribution of specialty chemicals, KMG Chemicals is focused on growth, innovation and the customer. We look forward to a lasting partnership with the company and its shareholders."

To celebrate the occasion, representatives from KMG will ring the NYSE Closing Bell at 4:00 p.m. ET on June 20, 2012.

About NYSE Euronext

NYSE Euronext (NYX) is a leading global operator of financial markets and provider of innovative trading technologies. The company's exchanges in Europe and the United States trade equities, futures, options, fixed-income and exchange-traded products. With approximately 8,000 listed issues (excluding European Structured Products), NYSE Euronext's equities markets - the New York Stock Exchange, NYSE Euronext, NYSE MKT, NYSE Alternext and NYSE Arca - represent one-third of the world's equities trading, the most liquidity of any global exchange group. NYSE Euronext also operates NYSE Liffe, one of the leading European derivatives businesses and the world's second-largest derivatives business by value of trading. The company offers comprehensive commercial technology, connectivity and market data products and services through NYSE Technologies. NYSE Euronext is in the S&P 500 index, and is the only exchange operator in the Fortune 500. For more information, please visit: http://www.nyx.com. NYSE

About KMG

KMG Chemicals, Inc., through its subsidiaries, produces and distributes specialty chemicals in carefully focused global markets foundational to the economy. KMG is a U.S. market leader in producing and supplying high-purity process chemicals, which are an integral part of the semiconductor manufacturing process, and wood treating chemicals used to extend the useful life of the nation's wood-based infrastructure. For more information, visit the Company's web site at www.kmgchemicals.com