John Bysiewicz, CPA, MBA

Partner, Mamacos, Bysiewicz & Associates, LLC

John brings more than 18 years of experience advising privately held companies across the construction, real estate & hospitality, manufacturing & distribution, technology/SaaS, non profits, and ERISA sectors. He works closely with business owners and leadership teams who need accurate financial reporting and steady guidance through key financial decisions.

John specializes in audited, reviewed, and compiled financial statements, along with strategic planning, forecasting, bank and surety relationships, tax planning, and succession planning. He is deeply experienced in helping clients navigate M&A deals, internal buyouts, and generational transitions – ensuring owners have a clear, well-structured plan at every stage.

Clients value John’s practical mindset, calm communication style, and ability to take complex financial matters and translate them into clear, actionable steps. His goal is to give business owners confidence, clarity, and strong support during moments that matter most.

Areas of Focus

Education

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