Financial Astrology of Sigma-Aldrich Corporation

FINANCIAL ASTROLOGY

First Trade Date for Sigma-Aldrich Corporation

Company Name	First Trade Date (yyyy-mm-dd)
Sigma-Aldrich Corporation	1975-08-08

Company Name	Symbol
Sigma-Aldrich Corporation	SIAL
History and Business of Company (this information may include date of incorporation)
Sigma-Aldrich Corporation ("the Company") was incorporated under the laws of the State of Delaware in May 1975. Effective July 31, 1975 ("Reorganization"), the Company succeeded, as a reporting company, Sigma International, Ltd., the predecessor of Sigma Chemical Company ("Sigma"), and Aldrich Chemical Company, Inc. ("Aldrich"), both of which had operated continuously for more than 20 years prior to the Reorganization. The Company's principal executive offices are located at 3050 Spruce Street, St. Louis, Missouri, 63103. On April 23, 2002, the Company announced its decision to sell substantially all the assets of its Diagnostics business and continue to supply customers under contract while seeking to transfer these commitments to other vendors as it sought to discontinue this business. On April 22, 2003, the Company concluded all activities related to the Diagnostics business. The operations of the Diagnostics business are accounted for as discontinued operations, and accordingly, operating results, including cash flows, and related assets and liabilities, are segregated in the consolidated financial statements for all periods presented. On February 16, 2001, the Company acquired the stock of Isotec, Inc., a leading producer and supplier of stable isotopes and isotopically labeled compounds used in life science research, medical diagnostics and PET imaging applications. The purchase price was $37.2 million. The Company operates in one segment. Information concerning sales for the Company's business units is provided in Note 13 to the Company's consolidated financial statements on page 39 of the 2003 Annual Report, which is incorporated herein by reference. The Company develops, manufactures and distributes the broadest range of high quality biochemicals and organic chemicals available in the world. These chemical products and kits are used in scientific and genomic research, biotechnology, pharmaceutical development, the diagnosis of disease and chemical manufacturing. The Company operates in 34 countries, offers 85,000 products and distributes these products in over 150 countries. The Company consists of three business units, Scientific Research, Biotechnology and Fine Chemicals, which define the Company's approach to serving customers. The Scientific Research unit sells biochemicals, organic chemicals, reagents and other products used by customers at universities, government institutions, non-profit organizations, pharmaceutical, diagnostic and biotechnology companies. These products represented approximately 70% of the Scientific Research unit sales in each of the years 2003, 2002, and 2001. The Scientific Research unit also sells complex and very pure organic and inorganic chemicals and analytical reagents used in high technology research. These products represented the remaining 30% of Scientific Research sales in each of the years 2003, 2002 and 2001. The Biotechnology unit supplies immunochemical, cell culture, molecular biology, cell signaling and neuroscience biochemicals and kits used in biotechnology, genomic and proteomic research as well as chromatography products used in life science research and high technology applications. The Fine Chemicals unit is a top 25 supplier of large-scale organic chemicals and biochemicals used in development and production by pharmaceutical, biotechnology, industrial and diagnostic companies. Due to continuing developments in life science, high technology and other scientific research, there can be no assurance of a continuing market for each of the Company's products. However, through ongoing reviews of technical literature, along with regular communications with customers, the Company's goal is to keep abreast of the trends in research techniques. This information, along with its own research technology, determines the Company's development of improved and/or additional products.

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