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John Kosar

Oakbrook Terrace, IL, USA

Man Advantage Consulting Group


Helping Business Owners Achieve Sustainable Growth & Operational Excellence


At Man Advantage Consulting Group, we specialize in helping business owners take their companies to the next level through strategic guidance, operational improvements, and financial clarity. With nearly 40 years of combined corporate and consulting experience, we bring a results-driven approach to solving complex business challenges.


What We Do

We partner with business owners to assess operations, identify bottlenecks, and implement strategies that drive measurable growth. Whether it’s increasing revenue, improving profitability, or streamlining processes, we focus on delivering tangible outcomes.


Our Approach

We don’t believe in one-size-fits-all solutions. Instead, we conduct a comprehensive business analysis to uncover the root causes of inefficiencies and missed opportunities. From there, we develop customized strategies tailored to each client’s unique needs.


Areas of Expertise

• Business Process Optimization

• Financial Strategy & Profitability Improvement

• Sales & Marketing Alignment

• Organizational Restructuring

• Leadership Development & Talent Strategy

• Strategic Growth Planning


Proven Results

We’ve successfully helped businesses across industries—from construction and logistics to manufacturing and professional services—achieve:

• 30% revenue growth for an insulation company through operational restructuring

• $1M+ revenue increase for a Texas trucking firm via management realignment

• 35% profitability improvement for a general contractor through organizational and operational changes


Why Work With Us?

At Man Advantage Consulting Group, we don’t just offer advice—we work alongside you to implement changes that make a real impact. Our expertise, combined with a hands-on approach, ensures that businesses not only grow but also build a foundation for long-term success.

+1 847-922-6622

John Kosar
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