The 8-Year Rule

What Eight Years Really Tells Us About Cybersecurity Exit Readiness 

Cybersecurity Market Signal

Cybersecurity Exit Timing – Market Pattern

• Among 21 disclosed 2025 exits valued at $250M+, the median company age was eight years
• Among 17 disclosed exits valued between $50M and $250M, the median company age was also eight years 
• Across the broader time-to-exit analysis, 43% of observed exits involved companies aged 10+ years 
• Only 15% fell within the 7–10 year band — confirming that eight years is better understood as a maturity marker than a fixed exit window 

Market data source: Momentum Cyber, 2025 Cybersecurity M&A and Capital Markets Report (January 2026), citing PitchBook, 451 Research and Momentum Cyber proprietary transaction data. Analysis and interpretation: Seiman Sears.

Interpretation

The “8-Year Rule” should not be interpreted as a countdown to an exit.

The 2025 data shows something more useful. Two disclosed-value cohorts — companies exiting for $50M–$250M and those exiting for $250M+ — both recorded a median company age of eight years. Yet the broader distribution is much wider, with 43% of observed exits involving companies more than ten years old.

The more meaningful conclusion is therefore not that Year Eight represents an optimal sale date.

It is that significant strategic outcomes often follow a period of institutional maturity — when product, customers, leadership and operating capability have had time to develop.

Executive Insight

Technology markets naturally focus attention on unusually fast outcomes.

Cybersecurity provides plenty of them.

But the 2025 exit data also demonstrates something less visible: strategic outcomes occur across a surprisingly wide maturity curve, and many arrive only after substantial organisational development.

In Momentum Cyber’s analysis of 2025 disclosed exits, companies in both the $50M–$250M and $250M+ value cohorts had a median age of eight years.

But that median should not obscure the dispersion underneath it.

The broader time-to-exit analysis shows:

• 7% exited in less than two years
• 22% between two and five years
• 13% between five and seven years
• 15% between seven and ten years
• 43% after more than ten years

Exit timing is therefore a distribution, not a deadline.

The dispersion matters because there is no single route to strategic relevance.

Some companies reach an attractive ownership event relatively quickly because a category changes around them, a strategic gap emerges or their technology becomes unusually scarce.

Others remain independent for far longer while they expand products, build enterprise distribution, professionalise leadership and establish a durable market position.

The relevant question is therefore not “How old are we?” It is “What has the company become during that time?”

The evidence points toward a more useful principle:

company age matters less than what maturity has been created with that time.

For founders and investors, the importance of the timing data lies less in predicting a transaction date and more in understanding what needs time to develop.

Enterprise credibility, repeatable go-to-market execution, leadership depth, product breadth and operational discipline are rarely created simultaneously.

As companies mature, those elements can combine to create something strategically important:

optionality.

A mature company may be able to remain independent, attract strategic buyers, take private-equity capital or — at sufficient scale — consider public markets.

The goal of maturity is not to force an exit. It is to increase the number of credible choices available to the board.

Market Context: Why Cybersecurity Matures Slowly

Cybersecurity companies face several structural requirements that can make institutional scale take time to build.

First, enterprise security buyers tend to be cautious. Security products are responsible for protecting critical systems and sensitive data, which means organizations rarely adopt new technologies quickly without extensive evaluation.

Second, cybersecurity solutions often require deep integration with complex enterprise environments. Products must interact with identity systems, cloud infrastructure, networks, and application environments, which can make deployment cycles lengthy.

Third, trust plays an unusually important role in cybersecurity markets. Organizations must feel confident that the vendors they select will continue supporting their products for years.

As a result, the companies that achieve the most significant scale tend to do so gradually, building credibility through years of consistent product performance.

Platforms such as Palo Alto Networks and Fortinet illustrate this dynamic clearly. Both companies spent years expanding their product capabilities and building strong enterprise relationships before becoming global leaders in cybersecurity infrastructure.

These dynamics help explain the idea behind what we refer to here as the “8-Year Rule.”

It is not a claim that companies should sell in Year Eight.

Rather, the eight-year median visible in important disclosed-value cohorts provides a useful reminder that strategic value often compounds through organisational maturity as much as through product innovation.

Strategic Insight: Exit Readiness Is a Maturity Question, Not a Countdown

Acquisition interest may arrive unexpectedly. Readiness rarely does.

A company’s ability to respond credibly to strategic interest is normally the result of decisions made over several years.

One useful way to think about that development is through a four-stage Seiman Sears maturity framework:

Phase 1: Technical Validation

During the earliest stage, the central question is whether the company solves a sufficiently important security problem to support durable customer demand.

Product quality, technical differentiation and early customer validation dominate the agenda.

Phase 2: Market Expansion

As product-market fit strengthens, the challenge shifts from proving the technology to proving repeatability.

Enterprise sales, channel strategy, customer success, international expansion and go-to-market leadership become increasingly important.

This is often where founder-led commercial execution must begin evolving into an institutional growth engine.

Phase 3: Strategic Embedding

At this stage, the company’s technology becomes increasingly embedded in customer workflows, infrastructure or security architecture.

Product adjacencies may develop, customer relationships deepen and the company becomes harder to replace.

Strategic relevance starts to become visible beyond the company’s standalone financial performance.

Phase 4: Strategic Maturity

Strategic maturity is reached when the business can increasingly operate as an institution rather than an extension of its founders.

Indicators may include:

• repeatable enterprise revenue
• leadership depth beyond the founding team
• greater product and organisational resilience
• established customer credibility
• multiple credible strategic pathways

At this point, acquisition may become one option — but so may continued independent growth, private-equity investment or public-market preparation.

Maturity increases optionality; it does not dictate the outcome.

Case Context: Exit Timing Is a Distribution, Not a Deadline

Faster Outcomes

29% of observed 2025 exits occurred within five years of company formation — 7% in under two years and 22% between two and five years.

These outcomes matter because they demonstrate that strategic scarcity, category timing or a particularly strong buyer rationale can accelerate the normal company-building curve.

The existence of fast exits is exactly why the 8-Year Rule should never be treated as a timetable.

Mid-Cycle Outcomes

A further 28% of observed exits occurred between five and ten years — 13% between five and seven years and 15% between seven and ten years.

This is the period in which many businesses are moving from founder-led growth toward more institutional operating models.

The strategic challenge often shifts from proving the product to strengthening leadership, repeatability and organisational depth.

Long-Duration Outcomes

The largest single group in Momentum’s 2025 time-to-exit analysis was companies aged 10+ years, representing 43% of observed exits.

That finding is important.

Longevity is not automatically a weakness, just as speed is not automatically a strength.

The real question is whether additional time is continuing to create strategic value — or merely adding age.

Founder Implications: Building for Long-Term Outcomes

For founders, the most useful implication of the 8-Year Rule is not patience for its own sake.

It is recognising that different forms of maturity need to be built before strategic optionality can be relied upon.

First, do not build around an assumed exit date.

Markets, buyer priorities and competitive categories change too quickly for a founder to predict precisely when strategic interest will emerge.

Build instead toward a company that has choices.

Second, leadership architecture should evolve ahead of organisational complexity.

Early success may depend on a highly involved founder and a small number of exceptional executives.

Later-stage scale often requires specialist leadership across enterprise GTM, product, engineering, finance, customer success and international operations.

Waiting until a transaction is being discussed to close those gaps is usually too late to demonstrate what the team is capable of delivering.

Third, time should increase strategic relevance, not simply company size.

Product depth, customer integration, category authority and platform adjacency should become stronger as the company matures.

If eight years have passed but strategic relevance has not increased, age itself provides little advantage.

These decisions influence hiring, fundraising and product development long before anyone needs to decide whether an exit is desirable.

Preparation Should Precede Urgency

There is an important distinction between company age and exit readiness.

A ten-year-old company can still be poorly prepared for strategic scrutiny, while a younger company may have unusually strong positioning, governance and buyer relevance.

Founders should therefore assess readiness independently from age.

A useful question is:

If a buyer approached tomorrow, what would we wish we had strengthened two years ago?

That question is often more actionable than asking when the company should exit.

Board-Level Questions

Boards and investors frequently examine several strategic questions when evaluating cybersecurity companies approaching later stages of growth:

• Are we building a standalone product, a platform, or a strategically important capability within a larger ecosystem?
• What has become materially more valuable about the company over the past 24 months?
• If strategic interest appeared now, which leadership or organisational gaps would become visible during diligence?
• Do we have the leadership depth required to support enterprise-scale growth? 
• Are our technologies becoming embedded within customer security architectures? 
• Which strategic buyers might eventually view our capabilities as essential? 

These questions move the board away from trying to predict a transaction date and toward a more useful discipline:

making sure every additional year creates greater strategic optionality.

Strategic Closing

The 8-Year Rule is useful precisely because it should not be taken literally.

Momentum Cyber’s analysis of disclosed 2025 exits shows a median age of eight years for both the $50M–$250M and $250M+ value cohorts. But the broader time-to-exit distribution tells an equally important story: only 15% of observed exits fell between years seven and ten, while 43% involved companies more than ten years old.

The conclusion is therefore not:

“Sell in Year Eight.”

It is:

“Use time to build maturity.”

For founders and boards, that maturity can be seen in several places:

• deeper enterprise customer relationships
• more repeatable revenue and go-to-market execution
• stronger product positioning and strategic relevance
• less founder dependency
• greater executive leadership depth
• more credible strategic alternatives

Company age alone creates none of those things.

But when additional years are used deliberately, they can transform a promising cybersecurity company into an institution capable of choosing its next chapter rather than simply reacting to it.

That is the real value of the 8-Year Rule.

It is not an exit clock. It is a reminder that optionality is built through maturity.

Many of these dynamics — including leadership readiness, buyer alignment and the decisions that can strengthen a company 12–24 months before strategic interest develops — are explored further in the Cybersecurity Exit Playbook.

Source note: 2025 cybersecurity exit-value cohorts and time-to-exit data are drawn from Momentum Cyber, 2025 Cybersecurity M&A and Capital Markets Report (January 2026), citing PitchBook, 451 Research and Momentum Cyber proprietary transaction data. Momentum’s disclosed deal-value analysis notes that transactions with undisclosed values accounted for a substantial majority of total exits, so the statistics should be interpreted as analysis of the observed/disclosed sample rather than a universal cybersecurity exit rule. The “8-Year Rule,” maturity framework, founder implications, leadership analysis and board considerations represent Seiman Sears analysis and interpretation.