A CIM is a sales document. The banker's job is to present the business in the best possible light. Your job is to find what they're not saying.
After screening hundreds of deals, experienced PE analysts develop a gut sense for which books are worth pursuing and which are polished turds. That intuition is pattern recognition — and it can be learned.
Here are the ten red flags that show up most often in CIMs, why they matter, and what questions to ask when you spot them.
1. Revenue concentration above 20% in a single customer
If one customer accounts for more than 20% of revenue, you don't have a business — you have a supplier relationship with credit risk attached. The CIM will usually bury this in a footnote or soften it with language like "a diversified customer base with a few anchor relationships."
What to ask: What's the contract length with the top customer? Is there a renewal coming up? What happens to EBITDA if they churn?
A top-10-customer revenue waterfall is table stakes. If the CIM doesn't include one, that absence itself is a signal.
2. Revenue growth that doesn't match industry growth
If the company is growing 25% YoY in a market that's growing 5%, that's worth understanding — and verifying. Sometimes it's a genuine share gain. Often it's a pull-forward, a one-time contract, or a recent acquisition folded into organic revenue.
What to ask: What drove growth in the last 12 months? How much is organic vs. acquired? What does the pipeline look like for next year?
3. EBITDA margins that are suspiciously clean
Real businesses have messy financials. If EBITDA margins are perfectly stable across multiple years — say, 18.2%, 18.4%, 18.1% — that's worth scrutinizing. It could mean the business is well- managed, or it could mean the adjustments are being used to smooth the story.
What to ask: Walk me through the add-backs. What's classified as non-recurring? How does your adjusted EBITDA compare to free cash flow?
4. Aggressive add-backs that inflate EBITDA
Add-backs are legitimate — one-time legal fees, owner compensation above market rate, non-recurring facility costs. But when the add-back schedule runs to three pages and includes items like "management team transition costs" or "restructuring charges" in multiple consecutive years, you have a problem.
A common trick: add back the CEO's $800K salary as "above market," then add back a $300K "replacement hire search" in the same year. Both can't be true.
Rule of thumb: Adjusted EBITDA minus unlevered free cash flow should be explainable. If there's a persistent gap, dig into working capital and capex.
5. Owner dependency with no succession plan
The founder's face is on the website, their name is in every client testimonial, and the CIM casually mentions they "plan to remain involved in an advisory capacity post-close." This is owner dependency risk dressed up as a feature.
What to ask: Who are the top 3 people besides the founder? What decisions can't happen without the owner? Have any key client relationships been transitioned to others?
You want to see a management team that could run the business without the founder for 90 days. If the org chart doesn't exist in the CIM, that's a flag.
6. Market size claims with no sourcing
"The total addressable market is $12 billion, growing at 8% CAGR." Source: none. This is not due diligence — it's decoration.
Bankers will cite the broadest possible market definition to make the opportunity look large. A business that makes specialized gaskets for marine diesel engines does not compete in the "$180 billion global industrial components market."
What matters: serviceable addressable market (SAM), not TAM. Ask: what's the realistic universe of customers this company could win, and what share do they currently hold?
7. Lack of recurring revenue — or recurring revenue that isn't
"High recurring revenue" is one of the most abused phrases in a CIM. Watch for:
- Annual contracts that aren't auto-renewing — these are just subscriptions with annual renewal risk
- Maintenance revenue classified as recurring — if customers can cancel with 30 days notice, it's not truly recurring
- Project revenue smoothed across quarters — revenue recognition timing can make lumpy project work look like a steady subscription stream
Ask for a cohort analysis: what's the dollar retention rate by vintage? If they can't produce it, the "recurring" revenue story is probably aspirational.
8. Multiple failed attempts to sell
If this is a banker-run process, ask how many times the business has been taken to market. Once is normal. Twice sometimes happens. Three times is a pattern that needs explaining.
Each prior process represents smart money that looked at the deal and passed. That's not a reason to automatically pass yourself, but it's a reason to understand what changed — and to verify the explanation independently.
What to ask: Why did the last process not result in a close? What's different now? Did any buyers get to LOI?
9. Key person concentration in sales
Similar to owner dependency, but more specific: if the top two salespeople account for 70% of new business, your revenue is a talent retention bet. Sales team attrition post-close is one of the most common value leakage events in PE-backed companies.
What to ask: What's the average tenure of the sales team? Are they on long-term incentive plans? What does the pipeline look like by rep?
10. Financial projections with no bridge from history
The management case shows 30% revenue growth for the next three years. The historical growth rate is 8%. There is no explanation.
Bankers call this "the hockey stick." It almost always comes from one of three places: a new product launch, a geographic expansion, or wishful thinking. If the CIM doesn't explain the bridge between history and projections in concrete terms (new contracts signed, new hires made, new markets entered), treat the projections as marketing material, not analysis.
What to ask: Walk me through the key assumptions behind Year 1 growth. What's the downside case? What growth rate do you need to hit your target return?
How to Screen for Red Flags Faster
Experienced analysts can move through a CIM in 45–60 minutes and flag the material issues. Junior analysts often take 3–4 hours and still miss things buried in footnotes.
The discipline is knowing what to look for and where to look — which is exactly what AI-assisted CIM screening is designed to accelerate.
CIM Reader runs every CIM against a structured extraction schema that surfaces the ten red flags above — plus fifteen others — with confidence scores and direct quotes from the source document. A senior analyst reviews the output, not the raw 60-page book.
The result: faster no decisions on weak deals, more time on the ones worth pursuing.