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Louis S. Massimo
Executive Vice President
and Chief Operating Officer
Arch Chemicals, Inc.

Louis S. Massimo is Executive Vice President and Chief Operating Officer of Arch Chemicals, Inc. (NYSE: ARJ), a global Biocides company with $1.5 billion in annual sales.  In this role, Mr. Massimo has operating responsibility for the Company's businesses as well as its information technology and SAP functions.  Until his promotion in May 2007, Mr. Massimo had served as Executive Vice President and Chief Financial Officer, overseeing Arch's corporate finance, strategic planning and development, investor relations and corporate communications departments.  Concurrent with his role as CFO, he managed Arch's HTH Water Products business, leading the effort to significantly enhance that business' operational and financial performance.   In addition, he previously managed the Company’s Hydrazine, Sulfuric Acid and Hickson & Welch businesses, until the latter two were divested during the summer of 2003. 

As a member of the Company’s senior leadership team, he played a key role in the successful execution and integration of all of the Company's acquisitions since its founding in 1999.  These acquisitions, which helped significantly increase sales and profitability, included Avecia’s Biocides business, Hickson International’s wood protection and coatings operations, Brooks Industries’ personal care intermediates business, and the Aquachlor and Nordeschlor water products ventures.  Mr. Massimo was also instrumental in the sale of the microelectronics operations to Fuji Film.

Prior to joining Arch Chemicals, Mr. Massimo served as Vice President and Controller of Olin Corporation.  He was extensively involved in several major strategic changes at the Company, including the 1996 spin-off of its ordnance and aerospace divisions as Primex Technologies, Inc., the divestiture of its toluene diisocyanate (TDI) business in late 1996 and the spin-off of Olin’s specialty chemical operations as Arch Chemicals in early 1999.

Mr. Massimo joined Olin in November 1994 as Director, Corporate Accounting, after 15 years of senior-level financial experience, primarily as an audit manager for KPMG Peat Marwick.

A 1979 graduate of Pace University with a BBA in accounting, Mr. Massimo also completed Duke University’s Advanced management Program in 2000.  He is a Certified Public Accountant and a member of the American Institute of Certified Public Accountants, the New York and Connecticut Societies of Certified Public Accountants, and the Financial Executives Institute CT /  Westchester Chapter.  He is a past member of The Conference Board’s Council of CFO’s and the Board of Directors of the Business Council of Fairfield County. 

Mr. Massimo is located at Arch Chemicals’ headquarters in Norwalk, Connecticut.

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