M&A Timeline: Key Milestones to Track

M&A deals are complex and typically take 6–12 months to complete. The process moves through distinct phases, from preparation to post-closing integration, each with its own tasks and timeline.

Preparation Phase (1–2 Months)

Sellers work with advisors to conduct a formal valuation and prepare 3–5 years of normalized financials, often supported by a sell-side Quality of Earnings report. The CIM or OM—30 to 60 pages in the lower-middle market, 80 to 150 pages for more complex deals—takes about 2–4 weeks to prepare and becomes the primary marketing tool, while advisors simultaneously build a buyer universe of strategic and financial prospects.

Marketing Phase (4–8 Weeks)

A one-page teaser goes out first to gauge interest without revealing the company’s identity, and the full CIM follows only after an NDA is signed. Advisors typically engage 3–5 qualified buyers simultaneously to create competitive tension, and the timeline from NDA execution to Letters of Intent typically spans 2 to 6 weeks.

Management Presentations and LOI Phase

Shortlisted buyers attend in-depth management presentations, sometimes with site visits, before submitting Letters of Intent. A standard LOI covers purchase price, deal structure, working capital requirements, and closing conditions, with exclusivity periods often lasting 30 to 90 days. Sellers hold the most leverage before signing the LOI, making it the best time to negotiate critical terms.

Negotiations and Due Diligence

Once the LOI is signed, an exclusivity period of 60 to 120 days typically follows while the buyer drafts a Definitive Purchase Agreement, usually 30–100-plus pages. Confirmatory due diligence runs 30 to 60 days, and for larger deals the Hart-Scott-Rodino Act requires a 30-day premerger notification waiting period. About 40% of M&A deals fail to close as scheduled, and nearly two-thirds of those that do close face delays of three months or more.

Closing and Post-Closing Integration

A “dry run” before closing helps catch missing signatures or incorrect wire details, and closings are increasingly conducted virtually with funds released from escrow once all conditions are met. Integration challenges are responsible for 83% of deal failures, so Transition Services Agreements and early cultural-alignment work during due diligence—as Emerson did ahead of its 2023 National Instruments deal—can make the difference between a smooth handover and a stalled one.

• Preparation (1–2 months): valuation, financial documentation, CIM creation
• Marketing (4–8 weeks): teaser, NDAs, and full CIM distribution
• Management presentations and LOI phase
• Negotiations and exclusivity (60–120 days) while drafting the purchase agreement
• Due diligence and closing (30–60 days)
• Post-closing integration and transition services