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Stephen A. Zinkgraf

Dr. Stephen A. Zinkgraf is CEO of Sigma Breakthrough Technologies, Inc. (SBTI), a firm he founded in 1997 to drive Business Process Excellence around the world.


Dr. Zingkraf spent three years at AlliedSignal leading the deployment of Operational Excellence (Six Sigma) in the firm’s $4B Engineered Materials Sector, driving over $350M in improvements in pre-tax income. He served in multiple quality-related roles at Motorola, including Engineering Group Leader, Production Manager and Plant Quality Manager, and Statistical Quality Engineering Group Leader.


At ABB, he led an internal consulting group focused on implementing Six Sigma in combination with Lean Manufacturing systems. He has also served as staff statistician for Compaq Computer Company.