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Mergers and Acquisitions Legal

M&A transactions are the most legally complex thing most businesses ever do. The deal architecture (asset vs stock vs merger), risk allocation (reps and warranties, indemnification, escrow, R&W insurance), and post-closing mechanics (earn-outs, working capital adjustments) each contain dozens of negotiable points. This guide covers the standard structure of a US private-company acquisition.

Standard deal process

  1. Initial discussions. Buyer interest, target's preliminary financial information, NDA.
  2. Indication of Interest (IOI) / Letter of Intent (LOI). Non-binding preliminary terms, including price range, structure, key conditions, exclusivity period.
  3. Due diligence. Buyer's investigation of the target: financial, legal, commercial, operational, IT, IP, regulatory, tax, environmental.
  4. Definitive agreement negotiation. Drafting and negotiating the purchase agreement and ancillary documents, often in parallel with diligence.
  5. Signing. Execution of the definitive agreement. In simpler deals, signing and closing happen simultaneously. In more complex deals (regulatory approvals, third-party consents needed), there's a signing-to-closing gap.
  6. Pre-closing. Satisfying closing conditions, obtaining consents, regulatory filings (HSR if applicable).
  7. Closing. Delivery of funds and securities, signing of closing documents.
  8. Post-closing. Working capital true-up, integration, earn-out measurement (if applicable), indemnification claims period.

Letter of Intent

The LOI is the first substantive document. Typically non-binding for the commercial terms but binding for specific provisions: exclusivity (the seller can't shop the deal for a stated period), confidentiality, expense allocation, sometimes a break fee.

Standard LOI content:

The LOI sets the negotiation anchor. Provisions left to "to be agreed" tend to be resolved in the buyer's favor during definitive agreement negotiation under exclusivity pressure. Sellers benefit from negotiating key terms (escrow size, indemnification caps, R&W insurance availability) into the LOI rather than deferring them.

Deal structures

Three primary structures for acquiring a US business:

Asset vs stock sale

The asset vs stock choice has significant tax, legal, and operational consequences.

Tax. Asset sales are usually better for the buyer (step-up in basis allows depreciation/amortization of intangibles including goodwill) and worse for the seller (double taxation for C-Corps; ordinary-income recapture on depreciable assets). Stock sales are usually better for the seller (capital gain treatment on stock sale; one level of tax) and worse for the buyer (no asset basis step-up; assumes historical asset basis). 338(h)(10) and 336(e) elections can permit treating stock sales as asset sales for tax purposes in specific circumstances; F reorganization conversions enable similar benefits for LLCs/S-Corps.

Liabilities. Asset sales allow the buyer to leave undisclosed and unwanted liabilities behind (with significant exceptions for successor liability in areas like environmental, employment, and product liability). Stock sales inherit all liabilities — known, unknown, and contingent.

Consents. Asset sales require assigning each contract individually, triggering anti-assignment provisions in many contracts. Stock sales typically don't trigger anti-assignment but do trigger change-of-control provisions in many contracts — potentially worse than asset sale consents in some deals.

Mechanics. Asset sales require identifying every asset to transfer (real estate deeds, vehicle titles, IP assignments, employment offers, contract assignments) — significantly more work than stock sales.

The structure decision typically goes through tax modeling. Where seller-side and buyer-side tax preferences diverge significantly, the structure can shift via tax election (338(h)(10) or 336(e)) or be reflected in the price.

Reverse triangular merger

The reverse triangular merger is the standard structure for most private-company acquisitions of corporate targets. Buyer forms an acquisition subsidiary; that subsidiary merges into the target; target becomes the surviving entity and a wholly-owned subsidiary of buyer; target shareholders receive merger consideration.

Reverse triangular merger benefits: stock-sale-like outcome (target continues as legal entity, contracts continue without explicit assignment for most purposes); but requires majority shareholder approval rather than universal participation (small minorities can be dragged); no merger tax to target's shareholders if structured as a reorganization.

For LLC targets, the equivalent is a sale of LLC interests, sometimes structured through F reorganization to facilitate tax planning.

Due diligence

Buyer's investigation of the target. Standard diligence categories:

Diligence is conducted through document requests, written Q&A, calls with management, site visits, and third-party reports (quality-of-earnings, environmental Phase I, IT assessment, etc.). A virtual data room organizes the materials.

Definitive purchase agreement

The Stock Purchase Agreement (SPA), Asset Purchase Agreement (APA), or Merger Agreement is the principal document. Typical structure:

  1. Definitions. Defined terms used throughout.
  2. Purchase and sale. What's being bought and sold, consideration, allocation among sellers if multiple, payment mechanics.
  3. Purchase price adjustment. Working capital adjustment, cash and debt true-ups.
  4. Closing. Time, place, deliverables.
  5. Seller representations and warranties. Detailed statements of fact about the target.
  6. Buyer representations and warranties. More limited; typically authority, financing, no conflicts.
  7. Pre-closing covenants. Operate ordinary course, obtain consents, no shop, access for buyer.
  8. Post-closing covenants. Non-compete, employee retention, tax matters, transition services.
  9. Conditions to closing. What must be true at closing for either side to be obligated to close.
  10. Termination. When the deal can be terminated and remedies.
  11. Indemnification. Survival of reps, baskets, caps, escrow, sole remedy.
  12. Miscellaneous. Notices, governing law, dispute resolution.

Representations and warranties

Reps and warranties are statements of fact about the target made by the seller as of signing (and often re-made at closing). They serve three functions: information transfer to the buyer, allocation of risk between parties, and basis for indemnification if untrue.

Standard categories (selected highlights):

Two qualifying concepts are heavily negotiated:

Disclosure schedules

Disclosure schedules attached to the agreement list exceptions to the reps. A rep that "all material contracts are listed on Schedule 3.10" is supported by Schedule 3.10. A rep that "there is no pending litigation except as set forth on Schedule 3.15" allows the seller to disclose pending matters and protect against indemnification claims based on those matters.

Preparing accurate disclosure schedules is critical seller-side diligence. An undisclosed fact — particularly one the seller knew about — becomes the cleanest indemnification claim.

Indemnification

Indemnification provides for the seller to pay the buyer for losses arising from breaches of reps, breaches of covenants, and (often) specifically identified pre-closing matters.

Heavily negotiated terms:

Escrow and holdback

Escrow funds a portion of the purchase price held with a third-party escrow agent to secure indemnification obligations. Typical escrow size: 5–15% of deal value for general indemnification; sometimes additional special escrows for specific identified risks.

Escrow term often matches the survival period for general reps. Released to the seller at the end of the period, less amounts retained for pending claims.

Alternatives to escrow: a holdback (buyer retains payment) functions similarly but the funds aren't with a third party. R&W insurance (below) reduces or eliminates the need for escrow in many deals.

Reps and warranties insurance

R&W insurance (RWI) covers breaches of reps and warranties, typically with a retention (deductible) equal to a small percentage of deal value. Now standard in private M&A transactions above $10–$20 million.

Two policy types:

RWI benefits both sides: sellers get cleaner exits with less escrow and capped exposure; buyers get coverage that survives longer than a seller's escrow and is paid by a creditworthy insurer.

RWI costs typically 2-4% of policy limits, plus underwriting fee. Limits often 10% of deal value. Insurer-side diligence is rigorous — the policy doesn't cover known issues, undisclosed matters, or matters within the deductible.

Earn-outs

An earn-out is contingent consideration based on post-closing performance — revenue, EBITDA, technical milestones, regulatory approvals, customer retention. Used to bridge valuation gaps when the parties disagree about future performance.

Earn-out negotiating points:

Earn-out litigation is common. Sellers feel they were prevented from earning the consideration; buyers feel the seller is over-claiming. Detailed measurement methodology and operating covenants reduce but don't eliminate disputes.

Working capital adjustment

Most M&A transactions include a working capital adjustment so that the buyer receives a target with a defined level of working capital. The mechanics:

  1. Parties agree on a target working capital (typically the trailing 12-month average) at signing.
  2. Pre-closing estimate of actual working capital at closing, with purchase price adjusted dollar-for-dollar from target.
  3. Post-closing actual working capital calculated and reconciled with estimate (typically 60–120 days post-closing).
  4. Final true-up payment in either direction.
  5. Dispute resolution (often expert determination or accounting arbitration) for unresolved disagreements.

Working capital disputes are common. Detailed accounting principles agreed in advance and consistent application reduce disputes.

Closing mechanics

At closing, the parties exchange:

In simultaneous sign-and-close deals (common in smaller transactions), all of the above happens at one closing. In split sign-and-close deals (common in larger transactions or those requiring regulatory approval), the parties sign the definitive agreement and then work to satisfy closing conditions over weeks or months before closing.

Common mistakes

FAQ

How long does an M&A deal take? Small deals can close in 4–8 weeks from LOI. Mid-market deals are typically 3–6 months. Large or regulated deals can take a year or more.

Do we need lawyers on both sides? Yes. Each side needs counsel. Trying to share a lawyer creates conflicts and produces worse outcomes for both.

What does M&A counsel cost? For a $5–$20M deal, $50,000–$200,000 per side is a typical range. Larger deals scale accordingly.

What's HSR? Hart-Scott-Rodino Act requires antitrust pre-filing for transactions above size thresholds (which change with inflation). Filing triggers a waiting period before closing.

Do we need a Quality of Earnings report? Buyer-side QoE is standard above a few million in deal value. Sell-side QoE (commissioned by seller pre-process) is increasingly common for upper mid-market deals.

What is "no shop"? Exclusivity provision in the LOI prohibiting the seller from soliciting or considering other offers during the LOI period. Standard.

What about employees of the target? Asset deal: buyer typically extends offers to employees, who become buyer-side employees. Stock deal: employees remain employed by the target entity, which becomes a subsidiary of buyer. Key employee retention is often a separate negotiation (retention bonuses, equity).