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Rosemore, Inc. is a privately-held corporation headquartered in Baltimore, Maryland with operating subsidiaries based in Houston, Texas. The primary focus of business operations today is oil and gas exploration, production and transportation via its Tema Oil and Gas Company and Gateway Gathering and Marketing Company subsidiaries. In the past, Rosemore, Inc. also had a presence in oil refining and marketing via its Crown Central LLC subsidiary. The company also manages a large diversified portfolio of investments. Rosemore, Inc. traces its roots back to 1931 when the original founders of the American Oil Company (AMOCO) formed a corporation to consolidate, expand and diversify their business activities. The firm currently manages the investments of the Blaustein/Rosenberg families. Henry A. Rosenberg Jr. was in the energy business, following in the tradition of his grandfather, Louis Blaustein, who was the inventor of the drive-through filling station and metered gasoline pump. Mr. Rosenberg has continued to
oversee his family's business interests as Co-Chairman of Rosemore, Inc., a position that he has shared with his son, Frank, since 2012. The Blaustein family in total net worth is north of $2B according to Forbes.
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