Post-acquisition integration of two lenders
Synergies verified line by line against the deal model under the Markham Verification Standard at month 12.
The situation
Two mid-market lenders — one acquired, one acquiring, similar in size and different in almost everything else — closed with a synergy case built in diligence and a hundred-day plan built from convention: brand first, systems early, synergies everywhere. The acquired lender’s book was concentrated: twenty broker relationships originated 60% of its volume, and three credit officers held most of what the book knew about itself.
The integration risk was not in the cost lines. It was in those twenty relationships and three people.
What the diagnostic found
The pre-close review re-ordered the plan around where value could actually be destroyed. The conventional sequence would have spent the first hundred days on branding and core-banking migration while the brokers took calls from competitors. The First 100 Days Ledger inverted it: every broker and every named key person became a day-1–30 workstream with an owner; systems migration was scoped and deliberately deferred to month 8.
How Markham helped
Protection ran first and personally: the twenty brokers were visited inside thirty days with pricing and service commitments in writing; the three credit officers were retained by name before any structure was announced. A combined decision-rights ledger for the seam published on day one — credit decisions kept dual sign-off for ninety days, then unified under the merged credit policy.
The operating model merged in month 2–8: one credit policy, one origination process, one management cadence — each a drawn commitment with a frozen baseline. Cost synergies were released only when the protection metrics held, which they did: 1.9% revenue attrition against the 9.1% the data says convention delivers.
Impact in detail
Synergies verified line by line against the deal model — one attribution line per benefit, no double counting.
What we took from it
The synergy case was beaten by protecting revenue first, not by cutting faster. The 112% is mostly value that convention would have lost.
Twenty broker visits in thirty days did more for the deal than any systems milestone. Integration value has names attached.
Deferring the core-banking migration out of the window was the hardest sell and the best decision — it happened in month 8, once, calmly.