A non-disclosure agreement (NDA) — also called a confidentiality agreement (CA) — is the contract a prospective buyer signs before receiving the CIM and being told the identity of the company for sale. It is the legal gate of the sell-side process: the teaser is sent freely, but everything past it is released only to parties bound by an NDA.
What an NDA covers
- Definition of confidential information — what is protected, usually all non-public information disclosed during the process.
- Use restriction — the buyer may use the information only to evaluate the potential transaction, not to compete, recruit or trade.
- Non-disclosure — the information may be shared only with a defined "representatives" group (advisers, lenders) who are themselves bound.
- Return or destruction — on request or if talks end, the buyer must return or destroy the materials.
- Term — confidentiality obligations typically survive one to three years (sometimes longer for trade secrets).
Clauses that matter most in M&A
Two provisions are negotiated hardest because they protect the seller against the deal itself leaking or being weaponized:
- Non-solicitation / no-hire. Bars the buyer from poaching the target's employees (and sometimes customers) — important because diligence exposes the buyer to exactly those people. Often carved back to allow general advertising and hires not resulting from solicitation.
- Standstill. In deals with public or larger targets, bars the buyer from buying the target's shares or launching a hostile bid for a period — preventing a party from using confidential access as a springboard to a takeover.
Mutual vs one-way
When only the seller discloses information, a one-way (unilateral) NDA suffices. When the buyer also shares sensitive information — common in stock-for-stock mergers or where the seller will take rollover equity in the buyer — the parties sign a mutual NDA protecting both sides.
Practical reality
NDAs are near-universal and largely standardized, but they are not self-enforcing: proving a breach and quantifying damages is hard, so the NDA's real value is deterrence and the legal hook it preserves. That is why advisers still stage sensitive disclosures — customer names, detailed pricing, key-employee identities are withheld from the data room until late in exclusivity, regardless of the signed NDA, so that the most competitively dangerous information reaches only the buyer most likely to actually close.
See also
- Teaser — A one-to-two-page anonymous summary used by sell-side advisors to introduce a target to potential buyers without disclosing its identity until an NDA is signed.
- Confidential Information Memorandum — The detailed marketing document that follows the teaser. Usually 30–80+ pages covering business overview, market, financials, customers, employees and growth opportunities.
- Data room — A secure repository (today, almost always virtual) where the seller posts due-diligence documents for buyer review. Access is staged by deal phase and bidder identity.
- Sell-side M&A process — The deal cycle from the seller's perspective: preparation, marketing materials, buyer outreach, IOIs, LOIs, exclusivity, due diligence, definitive agreement and closing.
- Exclusivity — A binding period (usually 30–90 days) within an LOI during which the seller agrees not to negotiate or accept competing offers, while the buyer completes diligence.
- Hostile takeover — An acquisition pursued against the wishes of the target company’s board.
External resources
Practitioner guides from Main Street Wealth, the M&A advisory firm that sponsors M&Apedia (how this works):
- Complete M&A Process Timeline — Stage-by-stage walkthrough of a transaction from preparation to closing.