Alf Sherk

Alf Sherk founded SherTrack, LLC to bring an innovative customer focused Lean approach to traditional supply chain planning and execution for complex manufacturing operations.  The need for a new process arose from his experience in leading the Specialty Chemical IBU of Dow Chemical’s Canadian division and the challenge of optimizing plant scheduling.

His vision and experience led to the SherTrack SNAPPS™ technology solution breakthrough.  The Lean Pull process is transformed and made fully operational with SherTrack SNAPPS™ predictive analytics by meeting customer demand and driving total system costs down.  This transformational approach significantly outperforms both the traditional Lean Pull and S&OP forecast based methodology.

Alf Sherk previously founded e-Chemicals, a pioneer in business-to-business e-commerce and is a past member of Michigan State University’s Graduate School of Business technical advisory council.   He is a graduate of Queen’s University and earned graduate degrees in organic chemistry and business administration.



Sachin Jain, Vice President of Information Systems

Sachin Jain

Sachin Jain is the Vice President of Information Systems at SherTrack and he leads the development and provisioning of SherTrack’s software solutions. He provides the vision and leadership for developing, implementing and maintaining solutions to enable SherTrack’s business strategy and objectives in a very competitive marketplace. Sachin joined the SherTrack team in 2003 and has played a key role in development of SNAPPS™. He has over 10 years of experience in leading software development. Sachin holds a Master’s in Business Administration from Stephen M. Ross School of Business at the University of Michigan - Ann Arbor and Bachelors of Science in Engineering in Computer Engineering from the University of Michigan - Ann Arbor.



Colin Wearring, Chief Solutions Architect

Colin joined SherTrack in 2003 as VP Professional Services where he led the successful deployment and integration of SNAPPS™ with customer ERP, MES and APS systems including support for the design and change management of customer work processes within LEAN and Six Sigma project environments. In 2006 Colin was promoted to CTO with responsibility for the technical direction of the SNAPPS™ Predictive Analytics and Simulation platform, including decision support solutions in Production Planning, Scheduling, Railcar Logistics and Supply Chain Process Improvement modeling.

Prior to joining SherTrack, as Executive Program Manager for Siemens PLM (1999-2003), Colin led a strategic, executive sponsored initiative that developed and deployed the next generation Collaborative Supply Chain Platform for Siemens Product Lifecycle Management (PLM) in partnership with Microsoft, HP and General Motors. The project was recognized by a customer CIO award with a deployment of more than 20,000 licenses. As VP Software for VSA (1990-1999), Colin led the maturation and successful integration of VSA’s Predictive Analytics for assembly processes with industry leading PLM and Computer Assisted Design (CAD) systems leading to the company’s acquisition in 1999 by a leading PLM vendor (Siemens).

Colin has served on National Standards (ASME) committees, been published in numerous trade journals and holds a joint patent for the digital representation of engineering information within digital models (CAD) for mechanical design tolerances. Previous positions involved the successful development and introduction of innovative new Predictive Analytics, Team Collaboration and Computer Modeling solutions for Quality, Durability, Noise, Vibration and Supply Chain to support production and design activities at Fortune 500 companies in the Chemical, Plastics, Automotive, Aerospace and High Technology industries.

Colin’s education includes a MBA from the University of Michigan, a MS in Engineering from the University of Cincinnati, and a BS in Engineering from the University of Waterloo, Ontario.



Gregory Schlegel CPIM, CSP, Jonah, Vice President Business Development

Gregory Schlegel

Greg Schlegel is Vice President Business Development for Shertrack, LLC.  He is internationally recognized as a supply chain expert and thought leader.  With over 25 years supply chain executive leadership experience, Greg held leadership positions with several Fortune 100 companies and spent over 7 years as an IBM Supply Chain Executive Consultant.

Greg is highly published and a frequent speaker at conferences, seminars and webinars.  He presents papers on supply chain management, risk management, Lean/Six Sigma and Theory of Constraints throughout the US and around the globe.  Greg is recognized by his peers as an industry leader and Past President of APICS’ International Society.  Greg also served on APICS Strategic Direction Committee and the Editorial Board for DC Velocity magazine.

Greg shares his supply chain expertise with university students and supply chain professionals.  He served as IBF forecasting certification instructor, taught operations management at the University of Scranton, St. Johns University and invited as a special guest lecturer at ASU and Rutgers University.

Greg is presently a member of the Business Intelligence Roundtable for Villanova University and teaching graduate level supply chain risk management at Lehigh University.  For over three years, Greg has been facilitating Supply Chain Risk Management workshops around the globe.  Greg is certified CPIM, CSP in systems and a Theory of Constraints Certified Jonah.  He holds a B.S. in Operations Research and Computer Science from Penn State University and did his graduate work at Lake Forest College.



Dr. Andre Calmon, Science Advisor

Andre Calmon is an Assistant Professor of Technology and Operations Management at INSEAD, Paris.  He is an expert on supply chain and optimization and has done research and consulting with several major global firms in these areas.  Andre serves on the SherTrack Board of Advisors and helps provide depth and expertise to our algorithms group. 

Andre earned his Ph.D. from Massachusetts Institute of Technology (MIT).  He also holds a M.Sc. in Electrical Engineering from the Universidade Estadual de Campinas (Unicamp) and a B.Sc. in Electrical Engineering from the Universidade de Brasilia (UnB).