Clear Demand consists of a team of executives and practitioners that developed, refined or influenced the predominant pricing solutions of the last 15 years. We learned a lot in that period of time and have fully leveraged those insights to bring you our current set of pricing innovations together with a genuine commitment to delivering value.

Brent Lippman

Executive Chairman

Brent Lippman – Brent is a serial entrepreneur who has created over $1 billion of shareholder value while serving as CEO for three software companies. Recently, as CEO of Khimetrics, he identified promising scientific intellectual property, provided initial angel investment, raised additional venture capital funding, created a new industry segment (Revenue Management), grew the business profitably, sold the company to SAP, and returned to initial investors an average annual return of 77%.

Prior to Khimetrics, Brent was CEO of JDA Software (Nasdaq: JDAS). During Mr. Lippman’s eight year tenure, he grew JDA into a company with $140 million in revenue, 1,100 associates, and operations in 11 countries with clients in over 30 countries.

Brent has an MBA from Case Western Reserve University.

Adam N. Rosenberg, Ph.D.

Chief Science Officer 

Adam Rosenberg has three decades of mathematical decision-support expertise in industries including retail science, airline optimization, financial-market analysis, hotel yield management, railroad line simulation, and telephony.

He started his career at Bell Telephone Laboratories developing the emerging cellular telephone systems. He also worked in printed-circuit-board design and manufacture and wrote a book on CDMA, the most-recent mobile telephone technology. Many of his software solutions have remained in production for over a decade and they have earned or saved hundreds of millions of dollars for his employers and clients.

Dr. Rosenberg earned his M.S. and Ph.D. degrees from Stanford University in Operations Research and his A.B. from Princeton University in Mathematics (cum laude). He holds several patents.

David Martin

VP, Science 

David’s background and experience in data science is broad and deep. Before joining Clear Demand, he worked in computational plasma physics and renewable energy. At Clear Demand he has advanced Retail Data Science in the areas of demand modeling and price, promotion, and markdown optimization. He specializes in scalable processing architectures that handle massive amounts of data. He has originated several new algorithms for market basket analytics. He leads a team of data scientists at Clear Demand including several Ph.D.’s from leading schools such as Stanford, Cal Tech, and Ga Tech.

Prior to joining Clear Demand, David spent several years teaching Physics and conducting research on perovskite photovoltaic signal processing at the National Renewable Energy Laboratory. David graduated from Wheaton College with a B.S. in Physics (summa cum laude), and holds a certificate of Data Science from Galvanize. He has a paper published in computational plasma physics from his undergraduate studies.

Sarah Stockton

VP, Product Management

Sarah Stockton has over a decade of experience in pricing across several industries including retail, airline, and rental equipment. She has worked for many fortune 500 companies providing strategic direction and increasing adoption and understanding of pricing software among users. She has extensive experience in project management, implementation, RFP response and analysis, and contract negotiation. Sarah has also presented at pricing conferences on price optimization and user adoption.

Sarah is passionate about making software work for users. As Clear Demand’s VP of Product Management, she works closely with customers to ensure understanding of the product and capture feedback for enhancements and future development.

Sarah Stockton earned a Bachelor of Arts in Economics and Business from Hendrix College. She is always striving to learn new skills and is currently pursuing a Project Management Professional certification. She is also an accomplished Martial Artist holding a black belt in Taekwondo, blue belt in Brazilian Jujitsu, and a yellow band in Muay Thai.

James Sills, Ph.D.

President & CEO

Jim Sills has extensive industry experience spanning 25 years and a proven track record building companies that deliver leading software solutions for retail.

He has been CTO at Revionics, VP of Retail Development at SAP, and VP of Research at Khimetrics. He has been responsible for managing teams throughout North America, Europe, and Asia to develop price, promotion, and markdown solutions. He implemented standard methodologies for Product Management, Development, and QA to consistently deliver on-schedule, on-budget, and on-quality.

He received his Ph.D. and Master’s from Georgia Institute of Technology and his Bachelor’s from University of Dayton (magna cum laude). He has published over 20 papers and holds seven patents.

Suzanne Bowers

VP, Global Sales 

Suzanne brings vast experience to Clear Demand as an experienced Account Executive that has been marketing solutions for the Convenience Store, Retail Fuel , Grocery and Big Box industries working with a large number of the top C-Store, Big Box and Grocery Clients for many years.

She has spent the last 15 years as a Sr. Account Executive at Kalibrate marketing Fuel Price Optimization and Network Planning. Prior to that, she managed the sales team for 8 years for ADD Systems marketing accounting solutions for Petroleum , C-store, Wholesale Fuel, Propane and Heating Oil Industry, and 5 years with EDS Oil & Gas Division.

Blake Chavis

VP, Sales 

Blake Chavis has a decade of experience providing strategic vision to SMB, Mid-Size, and Fortune 500 organizations during Software as a Service evaluations. In this time, he has worked on over 40 SaaS implementations and drove adoption across industries like retail, industrial distribution, manufacturing, high tech, and home improvement. Helping successful organizations actualize over $100 million in return on investment.

He has been an Enterprise Executive at Oracle working on digital applications and a Senior Executive at PROS working on price optimization and revenue management technologies. During his time at PROS, he was a part of the core team that worked on developing a retail pricing solution with built in supply chain demand forecasting capabilities. He has been responsible for managing projects throughout the U.S.A, Canada, and Europe.

Blake Chavis was a Sr. Letterman in Athletics and earned his Bachelor of Business Administration from Lamar University. He holds several technical certifications.

Don Webster

VP, Engineering


With nearly three decades of delivering solution architecture, web application development, and UI/UX solutions across multiple technologies for many companies and industries, Don ensures that Clear Demand continues to stay close to the cutting edge of software, web, and data trends.

Don is responsible for establishing Clear Demand as a market leader in current and next generation technologies, expanding technical architecture capabilities, overseeing development, infrastructure, and engaging with customers. Before Clear Demand, Don spent several years helping build the foundations of Carvana and held a leadership role during his time there.

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