Abacus Business Leaders Team


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Gary Teuber, a founding Principal of Abacus Business Leaders, prepares privately owned companies for growth, sale or succession. He has been a business owner and CEO / CFO for over 25 years.

He co-founded, built and sold a widely acclaimed Digital Printing and Marketing firm. Beginning with the first $50 order, Gary grew the firm to $12 Million in sales while re-inventing the company through five technology cycles and maintaining strong profits during each year in business. Gary’s strength is to take a systems approach to building business processes that are scalable and repeatable. Being a creative systems thinker, he developed a low cost and efficient ERP application, which was used to run the entire company.

As a result of this experience, Gary founded G-Tekk, Inc. (www.g-tekk.com), a company that eliminates Islands of Technology by implementing cloud accessible FileMaker Pro and Go Databases that run on PCs, Macs, IPads and IPhones, for a fraction of the cost of other solutions.

Gary has a strong background in Finance, Operations, Business Development, M&A, Database Development, and IT. His careful attention to details, customer and people skills, technical background and passion to drive financial results make him uniquely qualified to lead privately owned businesses.


Currently, Gary serves on the Board of Directors for Midwest Business Brokers and Intermediaries (MBBI).




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C.J. is currently COO and a partner at Concord Marketing Services in Glendale Heights, IL and previously spent 18 months as a Principal at Cadence, Inc., Wheeling, IL. C.J. Ritterbusch held various senior management roles and was a minority shareholder at a leading business services provider to Fortune 1000 corporations. His leadership was integral in growing revenue from $4 million to $20 million. His major accomplishments include implementing a just-in-time production process, overseeing the implementation of a $2 million e-commerce system and winning national, multi-million dollar contracts with over ten Fortune 1000 clients. As Vice President of the Corporate Sales division, C.J. had full P&L responsibility and successfully increased sales by 50% over four years. On two occasions over his 12-year career at his last firm, C.J. successfully led the sale of the company to private equity firms.

C.J.'s prior business experience include a finance role at the commercial leasing division of Citigroup and as a consultant in the Corporate Finance and Valuations practice of KPMG's Chicago office. This experience coupled with his hands-on management style, provides him with a unique set of skills tailored to leading a lower middle market business through hands-on management.

C.J. is currently on the Board of Directors for the American Club Association, leading professional networking organization. C.J. previously served as Treasurer of the Willow Glen Homeowner's Association and as Chairperson for the Our Lady of the Wayside management council. C.J. holds a B.B.A. degree in Finance from the University of Notre Dame.


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Bob Genc is a hands-on manufacturing executive who applies strategic insight to lead success through developing cohesive management teams, while working with new and existing technologies. As the Founder of multiple businesses, he has applied ideas and concepts beyond the realm of conventional practices to develop new products, improve efficiency, reduce cost and increase margins. Bob's expertise is working with new company startups, revitalizing current companies and creating equity opportunities.

After his distinguished military service, he became a Project Engineer, laying the foundation for process innovation and creative contributions in his following roles. Bob has been awarded two US patents.

As President of Technikraft Inc, he invented a manufacturing process and design later incorporated into Gibson Guitars. In other roles, Bob implemented automation concepts, developed Quality Assurance standards, and developed new products with diverse technologies.

Working with a PE group, as President of a distressed manufacturer of Boats, he transformed the business into a profitable retail and service operation.

Bob started a unique printing operation, building the company through evolving technologies. They produced multifaceted projects with overnight service, catering to accounts such as Chicagoland's largest home builders, Apple Vacations and McDonald's.

Bob participated in developing the processes, equipment and opening of a facility (under budget and early) to manufacture Wilson's Tennis and Racquet Balls.

He started Dallas Ozone Technology, introducing Ozone for antimicrobial treatment in the food processing industry. Bob developed innovative marketing techniques leading to live demonstrations for companies like ConAgra, Kraft and Saputo Cheese.


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Tim Knaus prepares privately owned businesses for growth, sale or succession. He has personally led three different companies with the title of President or General Manager over the last 25 years. His focus has been to broaden the sales base, find new markets and develop new capabilities that have value for existing and new customers. He has sold businesses and integrated acquisitions into acquiring businesses.

Tim led Inplex Custom Extruders, LLC from 2000 to 2008 as President and CEO. Under his leadership, this private equity owned manufacturer of custom thermoplastic extrusions paid off its acquisition debt in four years and achieved ISO 9001:2000 quality registration. Tim transitioned this business to Internet lead acquisition and brand promotion. With his guidance the shareholders of Inplex earned a 25 percent pre-tax return on net assets and made a profit in every year.

Tim had the good fortune early in his career to be challenged with a significant strategic growth planning and implementation assignment for an Avery Dennison business unit. He was promoted to Director of Marketing and Engineering and developed depth in strategic selling of technically laden products and services.

Tim has a strong background in finance following a brief career in the Air Force. He started his career in commercial banking after graduating from the University of Pennsylvania's, Wharton School. There he did credit analysis and loan agreement review. He received his MBA from the LeBow College of Business at Drexel University. Tim excelled at financial control work initially at the manufacturing plant level for Container Corporation of America. He was eventually promoted to Division Controller and then Assistant Treasurer. There his attention turned to bank relations, debt issues, cash flow and equipment lease opportunities.


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Matt Prazenka has been described as: "One of the most respected professionals in the service industry. Matt's history is one of innovation and out-of-the-box thinking, combined with an attention to detail and management by the numbers."

With more than 20 years of leadership experience in organizations that provide business-to-business and business-to-consumer services and products, Matt touched all aspects of the company by influencing sales, marketing, finance, accounting, policies, and processes.

Matt has served in many roles in the service industry. In his role as a CFO and VP of Operations, he was strategic in growing the company from 8 to over 24 million dollars in revenue over a seven-year period while increasing EPS from 12 to 41 cents. He was instrumental in implementing and financing a multimillion-dollar ESOP and subsequently managing the debt and saving hundreds of thousands of dollars with renegotiations.

Matt's focus on the details facilitated the attainment of broader objectives. He implemented Lean processes and Quality Management practices that resulted in reduced overhead, increased efficiencies and double-digit percentage increases in revenue per person.

Recently he served as "VP of Services" for an alternative energy company in Houston Texas, rooting three new HVAC operations in two states while creating products and services that complemented the solar and wind power installations.

Matt shares his insight and ideas with the industry through writing on web forums and speaking at conferences. He is known nationally for his contributions and collaboration with best practice groups and industry associations.