Key Person Risk
Key person risk is the concentration of critical revenue relationships, institutional knowledge, or execution capability in one or a small number of individuals. In GTM due diligence, it is one of the highest-impact findings because it directly affects the reliability of the revenue forecast and the viability of the value creation plan.
Definition
Key person risk exists when the departure of a specific individual — or a small group — would materially impair the company's ability to generate, retain, or grow revenue. This is distinct from general attrition risk. Every company loses people. Key person risk is about losing the wrong person — someone whose relationships, knowledge, or skills are not replicated anywhere else in the organization and cannot be replaced within a reasonable timeline.
The risk manifests in several forms: a single account executive who controls 30% of ARR through personal relationships; a VP of Sales who is the only person who understands the pricing model; a solutions engineer whose technical credibility is the reason three enterprise accounts renewed; or a founder who is the de facto head of sales, marketing, and customer success simultaneously.
Why It Matters
For PE deal teams, key person risk is a direct input to the revenue model. If a single rep controls a disproportionate share of revenue and that rep leaves post-close — which happens more often than deal teams want to acknowledge — the impact is immediate and quantifiable. The revenue does not gradually decline. The relationships walk out the door with the person, and the replacement hire needs 6-12 months just to understand the account landscape.
Key person risk also constrains the value creation plan. If your growth thesis depends on expanding into new segments or geographies, but the only person who knows how to sell your product is already at capacity, you do not have a scaling problem — you have a single point of failure masquerading as a growth opportunity.
What to Look For
- Revenue concentration by rep: Does any single seller control more than 15-20% of total revenue? More than 25% is a red flag in any organization beyond seed stage.
- Relationship ownership: Are customer relationships documented in the CRM, or do they live in one person's phone and email? If a key rep left tomorrow, could someone else call those customers?
- Institutional knowledge: Is the sales process, pricing logic, competitive positioning, and objection handling documented and taught — or is it in one person's head?
- Succession readiness: Has the company identified potential successors for critical roles? Have those successors been tested in any meaningful way?
- Compensation anomalies: Is one person earning dramatically more than peers? That often signals that the company knows they are dependent and is paying a premium to retain.
Red Flags
- A single rep generates more than 30% of revenue
- The founder personally manages the top 5 accounts
- No documented sales playbook or process — "everyone just knows how to sell here"
- The company has never successfully replaced a senior seller without losing the associated accounts
- Key technical or domain expertise resides in one individual with no knowledge transfer plan
- Compensation structures that suggest retention anxiety (golden handcuffs, above-market packages for one person)