Among all the business contexts in which NDAs are used, mergers and acquisitions represent perhaps the highest-stakes environment. When a business is for sale, the seller must reveal its most sensitive financial data, customer relationships, operational details, and strategic information to potential buyers who may ultimately walk away from the deal — and who may, in some cases, be competitors. The buyer faces its own confidentiality concerns, as the strategic rationale for the acquisition and details about the buyer’s financial capacity and integration plans are sensitive information the buyer does not want disclosed. An M&A NDA — also commonly called a confidentiality agreement in deal contexts — is the foundational legal instrument that governs information sharing throughout the sale process.
Why M&A NDAs Are Different
M&A confidentiality agreements are substantively different from the NDAs typically used in vendor, employee, or technology partnership contexts. They are generally more comprehensive, include provisions that are specific to the deal context, and are often the subject of more careful negotiation by sophisticated parties on both sides. Several features distinguish M&A NDAs from standard commercial confidentiality agreements.
The volume and sensitivity of information shared in due diligence is enormous. A typical M&A due diligence process involves the disclosure of financial statements going back three to five years, tax records, customer contracts, supplier agreements, employee compensation data, intellectual property documentation, litigation history, regulatory filings, and strategic planning documents. The combined commercial sensitivity of all this information is extraordinary, and the NDA must be drafted to cover it comprehensively.
The potential conflict of interest between the parties is uniquely high in M&A. In many acquisitions, the most likely buyers are competitors or adjacent players who have their own reasons to want access to the seller’s information. A competitor who gains access to a seller’s detailed financial data, customer relationships, and operational metrics during due diligence and then walks away from the deal has acquired extremely valuable competitive intelligence at essentially no cost. The M&A confidentiality agreement is specifically designed to prevent this outcome.
M&A deals often fall apart. According to various studies of deal activity, a significant percentage of acquisitions that enter the due diligence phase do not close. When a deal fails to close, both parties must be confident that the sensitive information shared during due diligence will be treated as confidential and used only to evaluate the specific transaction, not repurposed for other commercial ends.
Key Provisions Specific to M&A Confidentiality Agreements
While all the standard NDA provisions discussed throughout this guide apply in the M&A context, several provisions are either unique to M&A transactions or take on heightened importance in deal settings.
The standstill provision is one of the most significant provisions found in M&A confidentiality agreements and is rarely seen in other NDA contexts. A standstill provision prohibits the potential buyer from acquiring, or making any public announcement of a plan to acquire, the seller’s equity securities or assets for a defined period, regardless of whether the potential acquisition would otherwise be permissible. The standstill is designed to protect the seller from a scenario where a potential acquirer uses the due diligence access as a launching pad for a hostile acquisition, or where the mere disclosure that a potential buyer is accumulating shares triggers market disruption. Standstill periods typically run from twelve to eighteen months from the date of the confidentiality agreement.
The non-solicitation provision is standard in M&A confidentiality agreements and prohibits the potential buyer from soliciting the seller’s employees or key personnel during the standstill period or for a defined period thereafter. The seller’s employees are among its most valuable assets, and a potential acquirer who walked away from the deal should not be free to immediately begin recruiting the seller’s best people. Non-solicitation provisions in M&A agreements typically carve out general solicitations — job postings or advertisements not specifically targeted at identified seller employees — while prohibiting targeted solicitation of specific individuals.
The disclosure control provision specifies who within the buyer’s organization may have access to the seller’s confidential information during due diligence. M&A confidentiality agreements typically provide that the buyer may share confidential information only with those employees, advisors, financing sources, and other representatives who have a need to know the information for purposes of evaluating the potential transaction, and who are bound by equivalent confidentiality obligations. The seller may also insist on knowing which specific advisors will have access to the information, particularly in cases where the buyer’s advisors might include firms that work with the seller’s competitors.
The transaction confidentiality provision addresses the confidentiality of the transaction itself — not just the information disclosed in due diligence, but the fact that discussions are taking place at all. In most M&A situations, both parties prefer to keep negotiations private until a definitive agreement is reached, because market rumors can affect valuations, destabilize employee and customer relationships, and create unwanted competitive reactions. The transaction confidentiality provision typically prohibits either party from disclosing the existence of discussions, the terms of any discussions, or the identity of the other party to any third party without prior written consent.
The Seller’s Perspective: Protecting Your Business During Due Diligence
If you are the seller in an M&A transaction, your primary concern is ensuring that the information you share in due diligence is used only to evaluate the specific transaction and cannot be weaponized against you if the deal does not close. Several practices help protect your interests beyond the NDA itself.
Organize the due diligence process through a virtual data room — a secure online repository that controls who has access to specific documents, logs all access, and allows you to revoke access when the process concludes. Virtual data rooms provide an audit trail of exactly who viewed what documents and when, creating a detailed record of what information was disclosed that is invaluable if a breach dispute arises. Do not send sensitive documents by email or provide physical copies of highly confidential materials without a compelling reason.
Share information in layers. Provide the most sensitive information — specific customer contracts, detailed employee compensation data, specific trade secret documentation — only after you have received evidence of serious interest and ideally a letter of intent or term sheet establishing the principal terms of the proposed transaction. Information shared in the initial stages of due diligence should be enough to allow the buyer to form a credible view of the business without disclosing the most sensitive details, which can be shared later when the deal is further advanced.
Ensure the confidentiality agreement covers all of the buyer’s advisors who will receive access to confidential information — investment bankers, attorneys, accountants, consultants, and financing sources. Each of these parties should be identified in the agreement as authorized recipients and should be bound by confidentiality obligations that are at least as protective as those in the main agreement.
The Buyer’s Perspective: Confidentiality Obligations in Due Diligence
If you are the buyer, your primary concern with the M&A confidentiality agreement is ensuring that the obligations you are taking on are manageable and do not create unexpected risks for your organization. Several provisions deserve particular attention from the buyer’s perspective.
The scope of confidential information must be broad enough to protect what the seller cares about, but not so broad that it would cover general industry knowledge or publicly available information about the seller’s market that you would need to freely use in running your own business. Review the definition carefully to ensure that it covers specific, genuinely sensitive information about the target company without extending confidentiality obligations to information that is available from public sources or that you possess independently.
The standstill period should be limited to a reasonable duration. An eighteen-month or longer standstill that prevents you from acquiring shares in a publicly traded target may be manageable in the context of a specific negotiated transaction, but it can create complications if market conditions change and you determine independently that acquiring the target is in your strategic interest. Negotiate a standstill period that is long enough to give the seller confidence you are not using due diligence as a stepping stone to an unsolicited acquisition, but not so long that it prevents legitimate future business decisions.
The non-solicitation provision should include a carve-out for general solicitations and for employees who approach the buyer on their own initiative without targeted solicitation. It is reasonable for a seller to prevent the buyer from specifically recruiting identified employees after a failed deal; it is overreaching to prohibit the buyer from hiring a seller employee who independently seeks out the buyer for career reasons.
When the Deal Closes: Post-Closing Confidentiality
When a transaction closes, the confidentiality agreement typically terminates or is superseded by the definitive transaction documents. However, certain obligations typically survive: the obligation to maintain the confidentiality of the existence and terms of the negotiation process itself may survive indefinitely; return or destruction obligations for confidential materials not transferred in the deal should be completed promptly at closing; and any warranty or indemnification provisions that were included in the confidentiality agreement should be reviewed to confirm their survival status.
In the period between signing a definitive agreement and closing — the gap period — the buyer typically continues to have access to the seller’s information under the terms of the confidentiality agreement or the definitive purchase agreement. During this period, both parties have interests in maintaining confidentiality while also taking the steps necessary to prepare for the operational integration that will follow closing.
Whether a transaction ultimately closes or not, both parties should conduct themselves throughout the due diligence process as though every piece of information they receive may one day be evaluated by a court or arbitrator. The quality and integrity of how both parties handle confidential information during due diligence often shapes the entire tenor of the deal relationship and, where deals fail to close, determines who has the strongest legal position in any subsequent dispute. This guide is intended for educational purposes only and does not constitute legal advice. M&A transactions involve complex legal considerations that require the guidance of qualified legal counsel with expertise in mergers and acquisitions.