November 20, 2025 – CohnReznick, a leading professional services firm, today announced that Sebastien Cuvelier has joined as Transaction Advisory Services Partner. As a strategic finance and M&A executive, Cuvelier has more than 25 years of global experience advising Fortune 1000 companies and private equity firms across industries including software, technology, telecom, consumer, and healthcare. 

Cuvelier’s expertise spans buy-side and sell-side diligence, post-merger integration, carve-outs, financial modeling, IPO readiness, cash optimization, and internal control implementation. He has advised on more than 500 global M&A transactions ranging in value from $10M to $10B. Cuvelier is well-recognized for his ability to drive value creation while serving as a trusted advisor to C-suite and private equity leaders and boards.  

“Sebastien brings deep technical and industry expertise across the transaction life cycle to our growing Advisory team,” said Margaret Shanley, Transaction Advisory Services Practice Leader. “His commitment to client service excellence, along with many years of global transaction experience, will be a major asset to CohnReznick as we help our clients navigate increasingly complex deal structures in today’s rapid-pace environment.” 

Prior to joining CohnReznick, Cuvelier launched and led the M&A practice for a major professional services firm. Additional prior experience includes has more than 15 years of Big Four experience. Cuvelier holds a master’s degree in finance & accounting (DESCF & DECF) and a Diplôme d’Expertise Comptable (French Chartered Accountant) and is a CPA in New Hampshire. He is fluent in English and French (native), with intermediate proficiency in German.