Dave Coleman

Tatum LLC provides executive consulting services. It provides services to the healthcare, private equity, venture capital, public, not-for-profit, manufacturing, distribution, retail, financial and business services sectors. The company was founded by John Tatum and Doug Tatum in 1993 and is located in Atlanta, GA.

Arisdyne Systems, Inc. provides retrofit equipment for fuel ethanol and biodiesel producers. It specializes in designing small footprint devices that utilize its patented controlled flow hydrodynamic cavitations and applies to increase yield for ethanol production, reduce chemical consumption for vegetable oil degumming and neutralization and reduce catalyst consumption for biodiesel production. The company was founded in 2006 and is headquartered in Middleburg, OH.