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Corporate History

The links below lead to brief descriptions of historical corporate events, such as mergers and acquisitions, which cause changes in ownership or corporate level of ARMIS COSAs (Company Study Areas). Study area property, like any other property, may be bought and sold. When the ownership of a study area changes, the COSA label signifying the original property may be discontinued, as when the property is sold to a company that does not file ARMIS reports. Also, the COSA code may be replaced by a new code, as when two areas are combined into a larger area. Further, a COSA code's reporting level may change from, e.g., a combination operating-company-and-study area COSA to a study-area COSA. Finally, the COSA code's holding company relationship may change, even though the code remains unchanged.

Links to company-specific COSA history:





last reviewed/updated on June 14, 2010  


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