M&A Due Diligence and Data Room Prep

Many acquisitions slow down or fall apart in due diligence, when the buyer finds unsigned contracts, missing board approvals, unclear IP ownership or a cap table that does not match the records. The way to avoid that is to prepare before the letter of intent is signed: gather key documents, fix gaps, and organize everything in a well-structured virtual data room. A prepared seller usually closes faster, negotiates from a stronger position and has less exposure after closing.

What Is M&A Due Diligence?

Due diligence is the buyer’s investigation of the target company. The buyer reviews contracts, intellectual property, finances, employees, customers, liabilities and corporate records to confirm what it is buying, set the price and decide what protections it needs in the purchase agreement. What the buyer finds feeds directly into the seller’s representations and warranties, the disclosure schedules, and any escrow, holdback or special indemnity.

When Does Due Diligence Start?

Some high-level diligence often happens before a letter of intent (LOI), so the buyer can propose a price. Detailed confirmatory diligence usually begins after the LOI is signed, often during an exclusivity period. Before sharing any confidential information, the parties should sign a non-disclosure agreement. If the buyer is a competitor, the agreement and process should limit access to competitively sensitive information, sometimes through a “clean team,” to reduce antitrust risk.

The Virtual Data Room

A virtual data room is a secure online repository where the seller shares documents with the buyer and its advisors. Most platforms let the seller:

Grant access to all folders or only selected ones, and only to approved individuals.
Restrict downloading or printing for sensitive files.
See who viewed which documents and when.
Track and answer buyer questions in one place.

Virtual data rooms have largely replaced physical ones because they are easier to access, more secure and easier to organize. They also create a record of what was made available, which can matter later if there is a dispute about what the buyer knew.

What Goes in the Data Room

A typical data room for a startup or private company is organized by category:

Corporate records: charter documents, bylaws, board and stockholder minutes and consents, good standing certificates and foreign qualifications.
Capitalization: an accurate cap table, stock purchase agreements, option plan and grants, SAFEs, notes, warrants and investor rights agreements.
Material contracts: customer, supplier, partnership, license, lease and loan agreements, especially those with change-of-control or anti-assignment provisions.
Intellectual property: patents and applications, trademarks, domain names, open source use, and invention assignment agreements with founders, employees and contractors.
Employment: offer letters, contractor agreements, policies, benefit plans, and any change-of-control or severance arrangements.
Finance and tax: financial statements, tax returns, debt, and 409A valuations.
Compliance and disputes: litigation, demand letters, regulatory matters, privacy policies and data security incidents.

Common Problems That Delay Deals

When a seller waits until diligence starts, the same problems tend to appear:

Key contracts that were never signed by one or more parties, or that cannot be found.
Board or stockholder consents that reference exhibits that are missing.
Stock or options issued without proper approval, or a cap table that does not match the stock ledger.
Missing stock purchase agreements or investor rights documents.
Founders, employees or contractors who never signed invention assignment agreements. See our article on confidential information and invention assignment agreements.
Incomplete patent files or IP registered in a founder’s name rather than the company’s.
Contracts that require the counterparty’s consent to an assignment or change of control.
Employment issues such as worker misclassification or wage-and-hour exposure.
Change-of-control payments that may raise Section 280G golden parachute issues.

Each of these can usually be fixed, but fixes take time, may require signatures from people who have left the company, and can give the buyer leverage to renegotiate price or demand a larger escrow.

How to Prepare Before a Sale

Start early. Building a complete data room takes weeks. Starting before the LOI keeps momentum once the buyer is engaged.
Have counsel review documents as they are uploaded. Reviewing each document, rather than simply collecting files, catches gaps while there is still time to fix them.
Run a sell-side diligence checklist. Work through the categories a buyer will review and note issues to fix or disclose.
Clean up corporate records. Ratify defective approvals, reconcile the cap table and confirm that IP is owned by the company.
Identify required consents. Review key contracts for change-of-control, assignment and notice provisions.
Protect personal data. Redact or limit access to employee and customer personal information, consistent with privacy laws and your own commitments.
Organize the index logically. A clear folder structure that tracks the purchase agreement’s representations makes it easier to prepare disclosure schedules later.

Our post on contract review covers how to approach key agreements.

The Takeaway

Buyers will find problems if they exist; the question is whether they find them early, when the seller can fix or explain them, or late, when they become leverage. Building and reviewing the data room before signing an LOI is one of the most practical steps a seller can take to keep a deal on track.

Frequently Asked Questions

When should a seller set up a data room?

Ideally before signing a letter of intent. Building a complete data room takes weeks, and starting early gives the seller time to find and fix gaps before the buyer’s detailed diligence begins.

What documents do buyers ask for in acquisition due diligence?

Buyers typically review corporate records, the cap table and equity documents, material contracts, intellectual property and invention assignments, employment records, financial statements and tax returns, and information about litigation and regulatory compliance.

What problems most often delay an acquisition?

Common issues include unsigned or missing contracts, defective board approvals, a cap table that does not match the records, missing IP assignments, and contracts that require third-party consent to a change of control.

Yes. A non-disclosure agreement should be signed before confidential information is shared. If the buyer is a competitor, access to competitively sensitive information may also need to be limited to reduce antitrust risk.

How Sutter Law Can Help

Sutter Law advises sellers and buyers on mergers and acquisitions, including sell-side diligence preparation, data room review, corporate clean-up and disclosure schedules. Contact us for a free consultation.

This article is general information, not legal advice. Reading it does not create an attorney-client relationship.