A fairness opinion is a formal letter from a qualified financial advisor concluding whether the consideration in a proposed transaction is fair, from a financial point of view, to the specified shareholders or unaffiliated holders.

How it works

When a board approves a change-of-control sale, especially with conflicts (founder dual roles, insider buyers, or low premiums), independent directors or the full board may retain an investment bank to deliver a fairness opinion. The advisor reviews projections, comparable transactions, and DCF analyses—disclosed in summary in proxy materials for public companies; in board minutes for private deals.

The opinion supports fiduciary duty defenses if shareholders later sue alleging inadequate price. It is not a recommendation to vote for the deal, a valuation guarantee, or a shop process certification. Fees are typically contingent on close, which critics note as incentive alignment issues—boards still rely on opinions as standard practice in middle-market and large M&A.

Venture-backed exits use fairness opinions less often than public M&A unless the sale involves special committees or mixed common/preferred conflicts.

Why it matters

• Founders: If your board seeks a fairness opinion on a sale you proposed, understand it protects directors in litigation—not necessarily your personal outcome versus alternatives.
• Investors: Independent committee processes and fairness opinions signal rigorous handling of related-party acquisitions or recapitalizations affecting minority holders.

Common mistake

Assuming a fairness opinion means the price is optimal. Advisors opine on fairness within a range given information provided; higher bids may exist if no broad auction ran.

Related ideas

See fiduciary duty, change of control, special committee, and sell-side process.