Confidential Information Memorandum

A Confidential Information Memorandum (CIM) is the detailed document an investment bank prepares for an M&A process so buyers have what they need to bid. Also called an Offering Memorandum, IM, or Information Memorandum, the CIM typically runs 30 to 80 pages and is prepared by an investment bank or M&A advisor on behalf of a selling company, providing prospective buyers with the substantive business, financial, market, operational, and team information they need to evaluate the company and submit an initial bid. It is distributed after a buyer signs an NDA and indicates serious interest, and is the central marketing document in an M&A process.

The standard structure of a CIM: executive summary (5 to 10 pages summarizing the entire investment opportunity), company overview (history, organizational structure, ownership), products and services (what the company sells, to whom, with what differentiation), market opportunity (the industry, growth trends, addressable market), customers (top-customer concentration, retention, contract structure; usually anonymized to avoid revealing customer identities to competitors), financials (3 to 5 years of historical financials, projections, key metrics, unit economics), operations (manufacturing, supply chain, technology infrastructure as applicable), management team (founders, executives, key hires with bios), growth opportunities (the bull case for the acquirer), transaction overview (the structure being proposed, process timeline, contact information). The CIM is used in organized M&A processes typically run by investment bankers: the banker takes the CIM to a defined list of potential buyers, collects initial indications of interest, narrows the list, and progresses serious buyers through deeper diligence in a data room. Smaller deals (sub-$25M) often skip the formal CIM and run on a pitch deck plus data room; larger deals (over $50M) almost always use one. The 2020s reality: CIMs increasingly include modern unit-economics presentation (cohort retention, NRR, CAC efficiency) that older CIM templates didn't emphasize, reflecting the SaaS-and-software dominance in M&A volume.

What founders get wrong: Trying to write the CIM themselves to save banker fees on a sub-banker-scale deal. The CIM benefits from professional writing and market positioning that founders rarely produce on their own; the deals where founders skipped this typically saw lower valuations than the deals where a banker shaped the CIM and ran the process. If the deal is large enough to justify the banker, the CIM should be banker-quality.

Related: Data Room · Acquisition · Executive Summary · Definitive Agreement

FAQ

What is a Confidential Information Memorandum?
A detailed 30 to 80 page document prepared by an investment bank or M&A advisor for a selling company, providing prospective buyers with the substantive business, financial, market, operational, and team information they need to evaluate the company and submit an initial bid. Distributed after a buyer signs an NDA. Also called an Offering Memorandum or Information Memorandum.

What does a CIM include?
Executive summary (5-10 pages), company overview, products and services, market opportunity, customers (often anonymized), 3-5 years of historical financials plus projections, operations, management team, growth opportunities (the bull case), and transaction overview. Modern CIMs increasingly include cohort retention, NRR, and CAC efficiency.

Do I need a CIM for my acquisition?
For deals under $25M, the founder-led process with pitch deck plus data room is usually fine. Over $50M, the CIM is part of the package and a serious M&A process expects one. Banker-prepared CIMs typically produce better valuations than founder-prepared ones because they're written for buyers, not by sellers.