We provide assistance and business insights to entrepreneurs and middle-market companies needing the expertise of subject matter experts in a variety of business areas but who cannot afford those experts on a full-time basis.

We also provide assistance and consulting services to targeted companies and stakeholders, including private equity-owned firms, which may be experiencing business challenges and need professional assistance to overcome those challenges or to prepare for a potential buy or sale process.

Transforming Organizations.

Unlocking Growth.

About us

Diamond Performance Group specializes in empowering entrepreneurial and middle-market companies to overcome challenges and seize growth opportunities. We provide expert support to private equity and venture capital firms, offering acquisition assistance and operational expertise for portfolio companies. Our services are designed for organizations in need of experienced interim leadership or those facing complex financial and operational challenges. By delivering senior-level executive expertise, strategic guidance, and thorough due diligence, we help businesses navigate restructuring, solve problems, and achieve sustainable success—all without the need for long-term hiring commitments.

About our founder

Mike Sisk is a seasoned executive with over 25 years of experience leading organizations of various sizes from $10M in revenue to $300M in revenue.  He has guided several companies through financial turnarounds, operational restructuring, and strategic growth as CFO and most recently as CEO. He has a proven track record of success, including growing a private equity portfolio company from $25M in revenue and $1.1M in EBITDA to $53M in revenue and $5.4M in EBITDA implementing comprehensive process improvements, and optimizing financial health for record-breaking results. As a former CFO, he brings expertise in overall financial management, cash flow management, credit negotiations, and financial systems integration, helping companies drive revenue growth and enhance efficiencies. Recognized for his visionary leadership and a practical, data-driven approach, Mike is dedicated to unlocking the full potential of the businesses he serves.

“Throughout... several acquisition and sale processes, various operational and organizational changes, and any other challenges in his path, Mike remained a steady hand and principled leader of the company.

He is knowledgeable, hardworking, fair, and humble, and any organization would be lucky to have him on their team.”

Our Services

  • Diamond Performance Group specializes in solving complex business challenges with strategic, results-driven solutions. We assist organizations with strategic objectives, financial management, back office process improvements, operational efficiency improvements, and performance enhancement initiatives. Our expertise extends to business reorganization planning and debt restructuring to restore financial stability and support sustainable growth. With a focus on practical, data-driven strategies, we help businesses overcome obstacles and achieve long-term success.

  • Diamond Performance Group evaluates and elevates key business functions to drive organizational efficiency. We conduct process improvement assessments, implement recommendations, and review operational processes to optimize performance. Our expertise includes evaluating professional functions like finance and accounting, HR, IT, and marketing, providing actionable recommendations for improvement. Additionally, we address risk management challenges to ensure organizations operate effectively and securely.

  • Diamond Performance Group provides comprehensive due diligence assistance services to ensure successful acquisitions. We conduct financial evaluations of results and processes in collaboration with Quality of Earnings or CPA firms and assess business processes and organizational structure to assist in determining buy-side risk or seller preparedness to consummate a transaction. Our analysis includes post-closing recommendations for improvement and optimization. Additionally, we specialize in synergy identification and integration planning to maximize the value of acquisitions.

  • Diamond Performance Group offers interim executive leadership to guide organizations through periods of change and growth. We specialize in strategic planning, vision development, and organizational restructuring to drive stability and success. Our expertise also includes managing leadership transitions, ensuring continuity and effective alignment with company goals. With a focus on results, we provide the leadership needed to navigate challenges and achieve long-term objectives.

  • Diamond Performance Group provides expert financial leadership to support organizational growth and stability. Our services include financial planning, daily management, and cash flow oversight to ensure operational efficiency. We specialize in budgeting, forecasting, and optimizing financial strategies, processes, and capital structures. Additionally, we educate non-financial management teams, empowering them to make informed decisions that drive long-term success.

Let’s Work Together.

Interested in learning more, or working together in the future? Let’s connect and see what we can do together.