Private Equity Services Leadership Team

Experienced team. Ready day one.

Wipfli is a strategic partner to private equity firms seeking opportunity in the “muddy” middle market. We bring more than 85 years of experience serving mid-sized companies and have deep expertise with a variety of coveted industries including manufacturing and distribution, health care, logistics, technology,and construction and real estate.

Clients turn to us because the middle market is our accustomed territory and our leaders have been down these roads many times before. We draw additional insights as needed from Wipfli’s many other seasoned experts thanks to our firm’s deep industry specialization, then leverage their vast knowledge and unique experiences in the private equity field.

Your private equity adventure is calling. Let Wipfli be your guide.

Mark Martinelli  

Mark Martinelli, CPA

With over 25 years of experience, Mark specializes in strategic merger and acquisition planning for buyers and sellers, strategic business plans, strategic funding plans, and debt or equity finance sourcing. Throughout his career, he held the position of CFO for many private equity funds.

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Jeff Olejnik  

Jeff Olejnik
Principal, Risk Advisory Services

Jeff is a highly-experienced IT security services professional with more than 20 years in the industry. He helps clients manage risk through effective information security, business continuity planning, and program management.

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Michael Vaccarella  

Michael Vaccarella, CPA, CGMA, CM&AA
Partner, Private Equity and Transaction Advisory Services

Leveraging more than 20 years of public accounting experience, including over 10 years specializing in mergers and acquisitions, Michael is a leader in Wipfli's private equity services practice. In addition, as a leader in transaction advisory services, he provides and coordinates buy-side and sell-side transaction support and consulting.

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 Jeffrey Wulf  

Jeffrey Wulf


With over 20 years of experience, Jeff provides leadership for the firm in the areas of organizational development, change management, and process improvement. He specializes in change and transition management, business process analysis and improvement, organizational assessment and redesign, and leadership and organizational development.

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Go Beyond the Ordinary - Video

Today, more than 2,000 Wipfli team members with an unmatched breadth and depth of experience are trained to help individuals and businesses of all sizes streamline processes, improve performance, leverage the right technology, and stimulate financial growth.