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First Guaranty Bancshares Inc provides personalized commercial banking services to its customers in Louisiana through several banking facilities. The company offers commercial real estate loans, commercial and industrial loans, construction and land development loans, agricultural and farmland loans, and, to a lesser extent, consumer and multifamily loans. The company is engaged in a single line of business as a financial institution, which provides a full range of banking, financial, and trust services to state, county, and local government entities, individuals, and small and commercial businesses.

Berkshire Hathaway is a holding company with a wide array of subsidiaries engaged in diverse activities. The firm's core business segment is insurance, run primarily through Geico, Berkshire Hathaway Reinsurance Group, and Berkshire Hathaway Primary Group. Berkshire has used the excess cash thrown off from its operations to acquire Burlington Northern Santa Fe (railroad), Berkshire Hathaway Energy (utilities and energy distributors), and the companies that make up its manufacturing, service, and retailing operations (which include Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis.