What Is an Exclusivity Agreement?
An exclusivity agreement, sometimes called a lockup letter, commits the seller to deal with a single buyer for a set window, during which it will not solicit, entertain, negotiate, or accept offers from anyone else. It is often signed together with a letter of intent, and while most LOI terms are non-binding statements of intent, the exclusivity commitment is drafted to be legally enforceable.
The window typically runs 30 to 60 days, with extensions negotiated if the deal is progressing in good faith. During the period the buyer completes confirmatory due diligence, lines up debt financing, finalizes its internal approvals, and negotiates the definitive purchase agreement. Sellers frequently insist that key economic terms be locked in the LOI before granting exclusivity, so the buyer cannot use the shield of exclusivity to rebuild the deal from scratch.
How Exclusivity Fits Into a Sale Process
In a competitive auction, exclusivity is the prize at the end. The seller's bankers push bidders to their best price and terms through final-round bids, then grant exclusivity to the winner, or occasionally negotiate with two finalists in parallel until one earns it. In bilateral deals with a single interested buyer, exclusivity tends to arrive much earlier because there is little competition to preserve.
From the buyer's perspective, exclusivity is rational protection. Confirmatory diligence can cost millions in advisor fees, and lenders will not commit serious resources to financing a deal the buyer might lose. Few sophisticated buyers will fund that level of spend while the seller continues shopping the company to rivals, so the demand for exclusivity is a standard feature of late-stage negotiations.
Why Exclusivity Matters for Deal Outcomes
The moment exclusivity is granted, negotiating leverage shifts to the buyer, which creates the risk of retrading, where a buyer chips away at the price by citing diligence findings once competitors have gone away. Sellers manage that risk by keeping the window short and requiring a detailed, well-supported bid before granting exclusivity. A credible willingness to restart the process is the ultimate deterrent to a buyer who misbehaves.
Analysts on sell-side teams track exclusivity deadlines closely because an expiring window forces decisions about extending, renegotiating, or re-engaging other bidders. It also helps to distinguish exclusivity, a pre-signing arrangement, from the no-shop covenant in a signed merger agreement, which serves a similar purpose after the definitive agreement is executed.
