The deal closed sixty days ago. The sponsor has a value-creation plan with a revenue number attached to it, the board pack is already built, and you own the number. What you do not have is a senior marketing leader who can turn that thesis into pipeline. Sales is carrying quota on relationships. Marketing is two people running events and a website. The first board meeting is in six weeks.
A fractional CMO for private equity portfolio companies is a senior marketing operator who runs the go-to-market side of the value-creation plan on a part-time basis, reporting into the same cadence the board already uses. They translate the investment thesis into a demand plan, own a pipeline number, and stay accountable to it through the hold period rather than an open-ended mandate.
The argument of this piece is simple. Evaluate this role the way your sponsor evaluates everything else: on scope, proof and contribution to the exit narrative. Has this person operated inside portfolio companies at your revenue stage. What will be measurably different by day 100. Does the work produce a growth story a buyer will pay for. Rate is the least useful question on that list.
You buy a senior marketing operator who runs the go-to-market side of the value-creation plan two or three days a week, with a defined number and a reporting line into your existing board cadence. You are not buying campaign production. You are buying the decisions that sit above it: who you sell to, what you charge, which channels earn investment, and what the pipeline has to look like each quarter to hold the plan.
The work starts in one of three places. Thesis translation turns the sponsor's growth assumptions into a GTM plan with owners, dates and a number against each line. A GTM diagnostic tests the current state across ICP, pipeline math, pricing and channel mix, usually inside the first three to four weeks. The demand and brand build follows, sequenced so early campaigns land against the segments the thesis actually depends on.
The deliverables are concrete. A segmented ICP and offer map. A demand plan with sourced-pipeline targets by quarter. A positioning and brand narrative clear enough to stand up in diligence. A marketing operating rhythm with a weekly pipeline review, a monthly board view, and one shared definition of a qualified opportunity.
Evaluate against the thesis and the remaining hold period, not the resume. Five criteria separate an operator who will move the value-creation plan from one who will produce a marketing deck.
The red flags are just as clear. Channel recommendations before any diagnostic. No point of view on CAC payback or how it changes by segment. Reluctance to present directly to the board. A conversation that leads with rate rather than with the number they will move. And brand work proposed with no stated consequence for pipeline. Any one of those tells you the engagement will be measured on activity.
Five numbers carry the engagement: pipeline coverage against the quarterly target, CAC payback, LTV:CAC, marketing-sourced ARR or bookings, and the EBITDA line the spend sits on. Everything else is diagnostic detail that belongs in the working session, not the board pack.
CAC payback is where the gap between good and average shows up fastest. The Aleph and Benchmarkit 2026 SaaS & AI Performance Benchmarks put the median B2B SaaS company at 16 months to recover customer acquisition cost, while top-quartile companies do it in under 6 months. That spread is the whole argument for putting the metric in front of the board monthly. A sponsor reading 16 months sees capital tied up for more than a year per customer. A sponsor reading under 6 months sees a company that can fund its own growth.
These numbers roll up. What the CEO reports each month becomes the growth story a buyer reads in diligence, so the definitions have to be set once and held. Change how you count a qualified opportunity in month seven and you have erased your own trend line at the moment it matters most.
Choose fractional when the go-to-market plan does not exist yet and the company cannot wait a full search cycle to start building it. A fractional CMO gives you executive revenue leadership without the full-time overhead and is typically in the seat within two to four weeks, against a senior marketing search that commonly runs four to six months from brief to start date. In a three to five year hold period, four months of drift is a full quarter of pipeline you never get back.
A full-time CMO makes sense once the demand engine is built and the job becomes managing a team, a budget and a roadmap rather than designing the system. Promote or hire into a working engine, not into a blank page.
An agency is a different purchase entirely. Agencies execute channels well. They do not own positioning, pricing, the forecast or the board conversation, and they will not set the definitions your exit narrative depends on.
The practical answer is usually a combination. Specialised execution such as paid media, PR or website build sits with vetted partners working inside the engagement, while the fractional CMO owns the number the sponsor is reading.
The first 100 days should produce three things: a GTM diagnostic and prioritised plan in weeks one to three, campaigns and sales alignment live by week six or seven, and measurable movement in marketing-sourced pipeline before day 100. Plan, Activate and Accelerate overlap rather than run in sequence, so activation starts while the diagnostic is still closing out its last interviews.
By day 90 you should be able to see four signals without asking for a special report. Pipeline coverage is trending toward a defined multiple of the quarterly target, usually three to four times depending on your win rate and cycle length. A weekly revenue rhythm is running with sales and marketing in the same room. Forecast variance is narrowing quarter over quarter. Sales and marketing are using one written definition of a qualified opportunity.
If those signals are absent at day 90, do not extend the runway and hope. Find out which one broke. Missing coverage usually means the demand plan targeted the wrong segment. A stalled rhythm means the operating cadence was never really adopted. Widening variance means the qualification definition is still contested. Fix the specific failure in the next 30 days and report it to the board as a correction, not a delay.
We place fractional CMO and CRO leadership inside portfolio companies and run the work through the 100-Day Accelerator: Plan, Activate and Accelerate as three overlapping phases, with measurable results in 100 days and a Sustain phase after that. The first job is translation, turning the sponsor's investment thesis into a go-to-market plan with segments, owners, dates and numbers the board already recognises. From there we build the demand engine and the reporting that sits on top of it, so the CEO brings one set of definitions to the monthly pack and the same numbers carry into the exit narrative. Where specialised execution is needed, paid media buying, PR, website build, that work sits with vetted partners inside an engagement we lead. AI is applied where it shortens the path from plan to pipeline, in research, segmentation, content production and pipeline analysis, and nowhere it would replace the judgment you are hiring.
This week, write the one-page translation yourself. Three go-to-market outcomes from the investment thesis, each with a named owner, a date inside the next two quarters, and a number. Then read it beside the last board pack. If the two documents disagree, you have found your first priority.