When the hard part
is the ownership,
not the business.

There are more than two. One partner can buy the other out, funded by the company, outside debt, or a minority equity investor. The company can take on a recapitalization that gives the departing partner full liquidity while the remaining partner keeps control. Or the business can go to market and both partners exit on the same terms. Which one works depends on the value of the business, what the remaining partner can finance, and what the buy-sell agreement already commits you to. The worst outcome is stalemate, because an unresolved ownership fight visibly depresses what any buyer will pay later.

A negotiated internal valuation almost always leaves someone feeling cheated, because there is no market test behind it. The most reliable way to settle a disagreement about value is to let the market answer. A competitive process produces real bids from real buyers, which is far harder to argue with than an appraisal commissioned by one side. Even when the eventual outcome is an internal buyout rather than a sale, having credible outside offers in hand gives every shareholder the same set of facts.

A buy-sell agreement governs what happens when an owner wants out, dies, becomes disabled, or is forced out. Most closely held companies sign one at formation and never look at it again. It becomes urgent the moment someone wants liquidity, and owners routinely discover that the valuation formula is decades out of date, the funding mechanism was never put in place, or the terms favor whoever happens to be on the other side. Review it before you need it, not after.

Usually not directly, though it depends on your operating agreement and state law, and that is a question for counsel rather than a banker. What a minority holder can often do is create enough friction that the majority prefers to resolve it. In practice most of these situations end in a negotiated buyout of the minority position or a sale of the whole company, and both go better when the parties engage an advisor before the dispute becomes litigation.

Not inherently, and it is extremely common in closely held companies. It becomes a problem when inactive shareholders are surprised. They typically have different priorities than the operating owners: certainty of cash over earn-outs, speed over maximizing headline price, no interest in rollover equity that keeps them invested for another five years. Surfacing those differences before the business is marketed is what keeps a deal from collapsing at signing.

Yes, always. Buyers price uncertainty, and nothing creates more uncertainty than an ownership group that cannot deliver clean title and a unified decision. A disputed cap table either depresses bids, narrows the buyer pool to opportunists, or kills the process in diligence. The sequence that works is: settle the ownership question first, then run the process.

Both, doing different jobs. Counsel handles the legal rights, the agreements, and any litigation exposure. An investment bank establishes what the business is actually worth in the market and runs the process that delivers liquidity. Shareholder disagreements frequently get framed as purely legal problems when the underlying dispute is about value, and a credible market valuation resolves more of these than a filing does. We work very closely with our clients’ counsel.