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
- Audited, reviewed, and compiled financial statements
- Business strategy & forecasting
- Bank and surety relationships
- Tax planning & compliance
- Succession planning & generational transitions
- M&A support and internal buyout structuring
- Advisory for privately held companies
Education
- Master of Business Administration (MBA), Babson College
- Bachelor of Science in Accounting & Finance, University of Massachusetts Boston