When a deal closes, the acquirer inherits the target's contracts. That sentence sounds simple. In practice, it means that every vendor agreement, customer contract, license, and partnership arrangement in the target's repository becomes the acquirer's problem — and some percentage of those agreements contain provisions that were triggered by the acquisition itself. Assignment and change-of-control clauses are the mechanism through which counterparties can reassert control over a relationship they originally contracted for on different terms.
Experienced M&A counsel distinguishes carefully between these two clause types. They are related but not identical, and conflating them leads to diligence gaps that surface post-closing when it is most expensive to fix them.
This article provides general educational information about contract provisions commonly encountered in M&A transactions. It does not constitute legal advice, and the appropriate treatment of specific provisions depends on deal structure, jurisdiction, and context that only qualified counsel can evaluate.
Assignment vs. Change-of-Control: A Functional Distinction
An assignment restriction limits the ability to transfer contractual rights and obligations from one legal entity to another. The core concern is identity: the counterparty agreed to do business with Company A and wants assurance that it will not find itself in a contract with Company C without consent.
A change-of-control provision addresses a different question: what happens when ownership or control of a contracting party changes hands, even if the entity itself remains the same? In a stock acquisition, the target company continues to exist as the legal counterparty — no assignment occurs — but its ownership structure has fundamentally changed. An assignment clause, strictly read, may not be triggered at all. A change-of-control clause is specifically designed to capture this scenario.
This distinction matters enormously in deal structuring. Acquirers often choose asset acquisitions partly to avoid triggering assignment restrictions, only to discover mid-diligence that material agreements also contain change-of-control provisions. The target's software licenses, distribution agreements, and key customer contracts may require consent from counterparties regardless of deal structure — not because of assignment, but because of who now owns the counterparty.
How Change-of-Control Clauses Are Triggered
Change-of-control definitions vary considerably across agreements. The most common formulation triggers on a sale of more than 50% of the voting securities or assets of the contracting party. But counsel will encounter agreements that define change of control as low as a 25% ownership change, or as broadly as "any transaction resulting in a change in the management or effective control" — a formulation that could theoretically be triggered by an executive change without any ownership transfer.
Pay particular attention to the definition of "control" in the target's key agreements. Some formulations extend change-of-control provisions to indirect acquisitions — meaning the provision is triggered even if the acquiring entity acquires the target's parent company rather than the target itself. This is especially common in technology licensing agreements where the licensor was concerned about the target's technology ending up with a direct competitor through a corporate tree transaction.
The consequence of triggering a change-of-control provision also varies. The spectrum runs from mandatory consent (the counterparty must approve the transaction or the agreement terminates), to notice-only (the target must notify the counterparty, after which the counterparty has a specified period to elect to terminate), to assignment-fee provisions (the transaction can proceed but the counterparty is entitled to a fee), to no consequence at all (the provision was drafted to create a right that the counterparty has effectively waived by not exercising it for years).
Diligence Triage: Which Contracts Need Priority Attention
A target company's contract repository may contain hundreds of agreements. Not all of them warrant the same depth of review for change-of-control and assignment provisions. The standard triage framework prioritizes by consequence of termination.
Tier one — immediate review — includes agreements that would materially impair the combined business if terminated: key customer revenue contracts with significant remaining term, technology licenses without which the product cannot function, data processing agreements governing the target's access to essential third-party data. These agreements need to be identified, their change-of-control provisions extracted and analyzed, and a counterparty consent strategy developed before signing.
Tier two — pre-closing review — includes vendor agreements that would require replacement and incur transition cost but would not impair the core business: CRM and sales tool subscriptions, HR platforms, marketing technology. The question here is not whether termination is existential but whether the cost and timeline of replacement have been factored into deal economics.
Tier three — post-closing cleanup — includes low-value recurring agreements and legacy contracts that are de minimis in the context of the deal. These are noted and handled as part of normal integration rather than as pre-closing conditions.
The Consent Strategy
When material agreements require counterparty consent for the acquisition to proceed without triggering adverse consequences, M&A counsel needs a consent strategy before the deal announcement — not after. Post-announcement consent negotiations are conducted at a disadvantage: the counterparty knows the acquirer needs the agreement, knows the deal is time-sensitive, and may use consent as an opportunity to renegotiate pricing, term, or other provisions that were fixed at original signing.
We're not saying that seeking pre-announcement consent is always practical or that it eliminates leverage problems — sometimes disclosure obligations conflict with early outreach, and sometimes a counterparty will demand concessions regardless of timing. We're saying that waiting until post-signing to engage material counterparties is almost always worse than addressing the issue earlier, when the acquirer still has optionality about whether to proceed.
The practical consent strategy for most deals involves several components: a complete list of material contracts requiring consent, with change-of-control language excerpted for each; a tiered outreach sequence that contacts the highest-value counterparties first; and a fallback analysis — what happens to deal value if consent is refused — for each tier-one agreement.
A Practical Scenario: SaaS Acquirer, 2024
Consider a growing software acquirer that closed a bolt-on acquisition of a target with approximately 400 active vendor and customer agreements. Pre-signing diligence identified 12 agreements with explicit change-of-control provisions. Of those 12, three were tier-one: a data licensing agreement covering a proprietary dataset central to the target's core product, a key OEM reseller agreement accounting for roughly 30% of the target's recurring revenue, and a cloud infrastructure agreement with favorable pricing that had been locked in under a multi-year term.
The data licensing agreement required affirmative consent and contained a change-of-control fee equal to 15% of the trailing 12-month license fees — a dollar amount that, once identified, was factored into the purchase price adjustment. The OEM reseller agreement had a 60-day termination right for the counterparty following change-of-control notification; early engagement produced a consent with an updated commission structure that was acceptable to both parties. The infrastructure agreement required only notice, with no adverse consequence — but the notice had to be delivered within 30 days of closing, a condition that would have been missed entirely without the pre-closing diligence flag.
The common thread in all three is that the material risk was manageable once it was visible. The danger in change-of-control diligence is not the clauses that are found; it is the clauses that are not found because nobody extracted them systematically from a large repository before the clock started running.
Building This Into the Diligence Workflow
The most effective change-of-control diligence workflows treat the entire contract repository as the scope of review — not just the agreements that were flagged by management or appear on a schedule of material contracts. Targets routinely omit agreements from disclosure schedules, not always deliberately but because the original signers are no longer with the company, because agreements were filed inconsistently, or because they were categorized as vendor rather than material contracts despite containing provisions that become material in an M&A context.
Extracting assignment and change-of-control provisions systematically across a full repository, before the signing timeline creates pressure, is the difference between a controlled consent process and a post-closing scramble. The language is almost always there. The question is whether it has been read.