Owner Concentration: When Too Much of the Company Runs Through You
The 30-day vacation test asks whether the company can run without you. Owner concentration is the deeper question underneath: how much of the company’s actual value lives in your head, your relationships, and your reputation?
The answer, for many owner-led companies in the $20–$75M range, is more than they have explicitly accounted for. And significantly more than they’ve built into their exit expectations.
I’ve looked at this from both directions. As COO of a manufacturing turnaround, I was the person the company depended on in ways I didn’t fully appreciate until I wasn’t there. As CEO of a family office that acquired and held more than a dozen operating companies, I’ve watched diligence teams systematically map owner concentration in every deal we considered — and price it.
Eight Forms, Not One
Owner concentration isn’t just about hours worked. Buyers often think about it in eight distinct forms, and they check all eight.
Operational concentration. Are there processes, quality standards, or operational decisions that only work because you’re in the building? Estimating, scheduling, client escalation, technical problem-solving — anywhere the process ends with “ask the owner.”
Commercial concentration. Are you the primary relationship with the top customers? If your name is on the cover page of the top three contracts and you initiated those relationships personally, a buyer has to model what those customers do when you’re gone.
Technical concentration. Do you hold the specific expertise — ITAR compliance, AS9100 quality systems, specialized engineering knowledge, regulatory approvals — that the company’s capability depends on?
Financial concentration. Can the CFO explain the P&L without you? Can the EBITDA story be told from documents and reporting alone, or does it require your narration to make sense of?
Cultural concentration. Are you the de facto authority on what’s acceptable, how disputes get resolved, and what the company actually stands for? Not because it’s documented, but because everyone knows it goes through you?
Customer concentration. Related but distinct: how much revenue is concentrated with customers who have a personal relationship with you? Customer concentration alone creates a multiple discount: when it overlaps with owner concentration, the discount compounds.
Supplier concentration. Do critical supplier relationships run through you? The vendor who gives preferential pricing, the subcontractor who shows up when you call? What happens to those terms and that responsiveness after you’re gone?
IP concentration. Is there proprietary knowledge, process know-how, or competitive advantage that lives in your head and hasn’t been documented, protected, or systematically transferred?
What the Discount Looks Like
In my experience, meaningful owner concentration across several of these forms can account for 0.5 to 2.0 turns of valuation difference at exit. On a $30M company with $4M EBITDA at a 7x base multiple, that’s $2M to $8M of equity.
The range is wide because severity varies. A business where the owner is commercially concentrated in one large relationship but operations run independently sits at the lower end. A business where the owner is the technical expert, the key relationship, and the de facto financial narrator — and where removing him makes the company look materially different — sits at the upper end.
Buyers are not being punitive. They’re modeling what they’re actually buying. If the answer to “what does this look like without the current owner?” is “substantially different,” then that gap gets priced.
How to Close It
Mapping the eight forms is the diagnostic. Closing the gaps is the work.
Commercial concentration closes by deliberately transferring customer relationships to a senior commercial leader before you step back. That means introducing the leader, letting them run quarterly business reviews, and creating a period where the customer sees them — not you — as the primary point of contact. This takes 12 to 18 months before a transfer feels credible to anyone, including the customer.
Technical concentration closes by documenting, training, and in some cases hiring. If the ITAR expertise lives in one person and that person is the owner, the fix is a qualified compliance manager who runs the program independently. The documentation is necessary but not sufficient; the person has to be seen running it.
Financial concentration closes by investing in reporting quality — the kind of board-ready monthly package that tells the story without the owner’s narration.
Cultural concentration is the hardest and the most underestimated. It closes by giving the senior team visible authority and then stepping back when they exercise it. Not by writing a mission statement.
The companies that close these gaps before the buyer arrives have a stronger case for the multiple they believe they deserve. The ones that try to close them during diligence — if they close them at all — don’t.