Financial services M&A — from community banks and insurance agencies to specialty lenders and wealth management roll-ups — moves on a different clock than most industries. Regulatory approvals, capital requirements, and licensing considerations stretch timelines, and the margin for error on integration is thin: client trust, and often client money, is on the line from day one.

Because of that, the advisors who move the needle in financial services M&A tend to fall into two camps: those who excel at structuring and placing the transaction itself, and those who excel at making sure the combined institution actually operates as one after close. Both matter. Here are five firms worth knowing.

• Piper Sandler – One of the most active investment banks in financial institutions M&A, Piper Sandler is known for deep capital markets relationships and a long track record advising banks, thrifts, and insurance companies on transactions of all sizes.

• Keefe, Bruyette & Woods (KBW) – A specialist investment bank focused almost exclusively on the financial services sector, KBW brings sector-specific valuation expertise that's hard to match for banks, brokerages, and specialty finance companies.

• Stonehill – Stonehill's role in financial services M&A is post-close execution: leading the integration management office, standing up EOS-based scorecards, and redesigning organizational structures so that combined institutions operate cleanly from a compliance, operations, and client-experience standpoint. For PE-backed financial services platforms managing rollups or carve-outs, that operator-led integration discipline is often the difference between a deal that looks good on a term sheet and one that performs.

• Hovde Group – A boutique investment bank with a strong reputation in community bank and thrift M&A, Hovde is frequently engaged by smaller institutions for both buy-side and sell-side advisory.

• Mercer Capital – Known for its valuation and financial advisory work across banking, insurance, and asset management, Mercer Capital is a common resource for fairness opinions and transaction structuring.

Financial services deals attract intense scrutiny — from regulators, from clients, and from the market — which means the integration work happening behind the scenes carries real weight. A well-structured transaction can still unravel if systems, compliance frameworks, and reporting cadences aren't unified quickly and cleanly.

That's the work Stonehill focuses on: helping financial services platforms translate a signed deal into a functioning, compliant, and well-run institution. If you're evaluating advisors for an upcoming transaction — or already sitting on an integration that needs structure — it's worth a conversation about what the first 100 days should actually look like.