William Matthew Brown

Drummond Co., Inc. engages in mining, purchasing, processing, and selling of coal and coal-based derivatives. It operates foundry coke plants for use in automotive, construction, smelting, rock wool insulation, and sugar industries. The firm also offers petroleum-based products, including lubricants, oils, hydraulics, on-road, and off-road fuels. The company was founded by Heman E. Drummond in 1935 and is headquartered in Birmingham, AL.

U.S. Concrete, Inc. engages in the production of ready-mixed concrete. It operates through Ready-mixed Concrete and Aggregate Products segments. The Ready-Mixed Concrete segment focuses on the formulation, preparation, and delivery of ready-mixed concrete to the job sites of customers. The Aggregate Products segment produces crushed stone, sand and gravel from aggregates facilities located in New Jersey and Texas, Oklahoma, United States, Virgin Islands, and British Columbia, Canada. The company was founded in July 1997 and is headquartered in Euless, TX.

Citigroup Global Markets, Inc. engages in the provision of brokerage, investment banking, and asset management services to individuals, businesses, and governments. The company was founded by Julie E. Silcock and is headquartered in New York, NY.

Forterra, Inc. is a holding company, which engages in the manufacture and sale of pipe and precast products. It operates through the flowing segments: Drainage Pipe & Products, Water Pipe & Products, and Corporate and Other. The Drainage Pipe & Products segment produces concrete drainage pipe and precast products in the United States and Eastern Canada. The Water Pipe & Products segment focuses on the production of ductile iron pipe and concrete and steel pressure pipe. The company was founded in 1899 and is headquartered in Irving, TX.

Andretti Acquisition Corp. is a blank check company. The firm was formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more entities. The company was founded on January 20, 2021 and is headquartered in Indianapolis, IN.

Rocky Mountain Industrials, Inc. provides bulk aggregate and logistics services. The private company is based in Greenwood Village, CO. Brian Fallin has been the CEO of the company since 2021.