What Is a Change of Control Clause in a Contract?

A change of control clause gives a party certain rights — to end the contract, renegotiate or require consent — if the other party is sold, merged or comes under new ownership. It can make a business harder to sell, because a buyer may find key contracts can be ended the day the deal closes.

Analyze my contract — free Full mechanics: What Are the Most Common Risky Contract Clauses? (2026)

Why it matters

It can make a business harder to sell: a buyer may find key contracts can be ended the day the deal closes.

How common is it?

In the 510 public-company commercial contracts of the CUAD dataset (The Atticus Project, CC BY 4.0), 121 (23.7%) contain a change-of-control clause.

Among contract types with at least 20 contracts in the set, it shows up most in co-branding agreements (13 of 22), development agreements (10 of 29) and license agreements (11 of 33).

These are larger-company deals, not a sample of every contract — a reference point, not a rule. Full method: /data/cuad.

What to watch for

A wide definition of “control” that catches small investments.
A right to end the contract immediately, with no notice period.
One-way wording: only your change of control counts.

A realistic example

A two-founder startup takes on an investor holding 30% of the shares. Its main customer says that counts as a change of control and asks to renegotiate prices.

What to ask for

“Control” defined as more than 50% of voting rights.
A notice period and a right only to end the contract, not to change its terms.

Related guide: Most common risky contract clauses

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Not legal advice. This is an educational definition of a common contract term. Details vary by jurisdiction — this page explains common U.S. usage. For high-stakes agreements, have a lawyer review the final version.