According to a recent Korn Ferry study, half of boards say their last CEO search started too late, leaving strategy gaps and rattling investors. In 2026, Russell Reynolds Associates reported that 25 percent of new public-company chiefs had already led another listed business—directors are doubling down on proven leaders. Securing that caliber quickly and without conflicts demands a search partner you trust.
This guide profiles eight firms matched to three scenarios—founder hand-offs, global public-company succession, and PE-backed growth. We compare their public data on volume, speed, and retention, flag what’s missing, and close with a board-ready diligence checklist.
How we built the shortlist
We mapped our process to the client-care standards in the Association of Executive Search and Leadership Consultants (AESC) Global Guide to Choosing an Executive Search Firm.
Five mandatory gates
- A public, dedicated CEO or board-search practice
- Documented retained searches for senior roles within the past two years
- A verifiable case study, volume metric, or client score tied to CEO or board work
- Sector or ownership-model experience that reflects Tekedia’s tech, global-scale, or PE audience
- Cross-border reach that supports international talent flows
Three practical buckets
- Technology and innovation specialists for founder hand-offs
- Global advisers for public-company boards
- Private-equity and middle-market experts on value-creation timelines
Within each bucket, we compared hard numbers (search volume, retention, speed) alongside softer factors such as assessment science and off-limits discipline. Because disclosures vary, we list the eight qualifying firms alphabetically within each bucket rather than rank them.
Firms at a glance
The matrix below lets you scan for fit quickly. We mark N /D (not disclosed) where the firm provides no public figure.
| Firm | Best for | Founded / HQ | CEO / board evidence | Global reach | Speed metric* | Assessment tech | Fee note |
| SPMB | Founder successions; tech scale-ups | 40+ years, Silicon Valley | Hundreds of C-level searches a year | U.S.-based; clients across technology, consumer, financial services, healthcare, renewables | N /D (live search dashboard) | Proprietary research and talent-management technology | N /D |
| True Search | AI, venture, PE-backed growth | 2012, Philadelphia | 64 % of CEO placements prioritize growth mandates | Offices on six continents | Hire identified in ? 26 days | True AI Index; Thrive CRM | N /D |
| Spencer Stuart | Public-company CEO and chair shifts | 1956, Chicago | 4,500 CEO searches since 2011 | 60+ offices, 30+ countries | N /D | Executive Intelligence (ExI) | N /D |
| Russell Reynolds | Assessment-heavy global boards | 1969, New York | Dedicated CEO & Board Practice | 47 offices worldwide | Qualified shortlist ? 8 weeks | Leadership Span; simulations | N /D |
| Heidrick & Struggles | Transformation; interim cover | 1953, Chicago | Works with 70 % of Fortune 1000 | 30+ countries; 56 offices | N /D | Heidrick Connect; Leadership Framework | ? ¹?? first-year cash pay |
| Egon Zehnder | Cross-border; family succession | 1964, Zurich | 1,200 CEO and 3,600 board mandates (five years) | 71 offices, 37 countries | N /D | Potential Model; Culture Profile | N /D |
| Korn Ferry | Enterprise scale; integrated talent | 1969, Los Angeles | 6,500 exec searches in FY 2026 | 130+ offices, 50+ countries | N /D | KF4D; CEO Impact Accelerator | ? ¹?? first-year cash pay |
| JM Search | PE portfolios; middle market | 1980, Pennsylvania | 1,500 exec placements (24 months) | 13 U.S. hubs, Amrop alliance | N /D | Partner-led AI mapping | N /D |
*Speed metric reflects each firm’s own wording: initial hire identification (True) or qualified shortlist delivery (Russell Reynolds). Figures are self-reported unless noted.
Metrics marked N /D are not publicly disclosed.
Technology and AI-driven search partners
Early-stage founders and growth investors need advisers who understand product velocity, funding cadence, and technical talent markets. We profile two boutiques whose partner access and data depth often reveal candidates the Big Five miss.
SPMB: best for founder hand-offs at Series C and beyond
With more than four decades of experience building leadership teams, SPMB completes hundreds of C-level searches a year and has worked with thousands of companies, from disruptive, growth-stage startups to established Fortune 500 corporations, across technology, consumer, financial services, healthcare, and renewables.
What sets SPMB apart
- A dedicated CEO and president executive search practice that manages the whole transition, from strategic alignment with the board to developing internal talent and identifying external prospects
- A mapped bench of next-generation CEO talent: leaders already tested in senior operating roles who are ready to step up, alongside proven, time-tested chief executives
- Experience with founders who choose to hand the CEO role to a more experienced leader, or who want a strong #2 to build the business with them
- Proprietary research and talent-management technology, with clients able to follow search progress on a live dashboard
- Long-tenured partners who keep their caseloads capped, so the partner who pitches the search stays close to it
For product-led founders and growth investors planning a founder-to-CEO handover, SPMB pairs Silicon Valley depth with partner-level attention from kickoff to start date.
True Search: best for AI-heavy, VC and PE scale-ups
Born in 2012 inside the venture ecosystem, True is the sixth-largest firm in the industry and reports that 64 percent of its recent CEO placements center on growth and transformation. Its proprietary data tracks thousands of executive conversations and compensation data points, useful when you need pattern recognition rather than résumé roulette.
Speed signal
Clients meet the executive they eventually hire an average of 26 days into the search. That figure covers the initial introduction, not contract signing or start date, so press for mandate-level timelines.
Data and inclusion stack
- True AI Capability Index scores technical leaders
- Thrive CRM tracks pipeline health in real time
- AboveBoard broadens access to under-represented executives
- A forensic-reference unit validates every finalist
Recent expansion
A minority investment from Integrum (November 2025) funds new practices in hard-tech, private credit, and interim leadership.
Ask before you sign
All metrics are self-reported. Request CEO-specific retention rates, diversity-slate composition, and median “search-to-start” days for companies of your size and geography.
Metrics are firm-reported unless cited. Press each adviser for mandate-level speed, slate diversity, and retention proof before signing.
Global advisers for public-company boards
Public companies face activist scrutiny, proxy-advisor rules, and cross-border investor relations. Boards therefore prize firms that blend governance depth, worldwide reach, and documented CEO-succession scale—often hundreds of public-company mandates a year. The five firms below meet that bar; each operates on multiple continents and publishes governance research that shapes investor expectations.
Spencer Stuart: best for complex CEO succession and chair transitions
Spencer Stuart reports nearly 4,500 CEO search and succession assignments since 2011 and has led more than one-third of S&P 500 external CEO appointments. Scale alone is not the draw; boards hire Spencer Stuart for disciplined process.
Engagements start with a future-state success profile rather than yesterday’s job description. Finalists then complete Executive Intelligence (ExI), a psychologist-designed assessment that benchmarks decision speed, stakeholder alignment, and resilience against a large normative database.
Governance depth matters, too. The firm launched its Board practice in 1983 and still publishes the Spencer Stuart Board Index, a data set boards and proxy advisers cite when challenging skills gaps and independence.
Ask before signing
- Off-limits restrictions created by the firm’s broad client roster
- Day-to-day partner team; star rainmakers may hand work to principals
- Median days to shortlist, offer, and start; Spencer Stuart does not publish timeline averages
When activist pressure, media scrutiny, or a pending chair retirement raises the stakes, few advisers match Spencer Stuart’s mix of governance depth and assessment rigor.
Russell Reynolds Associates: best for assessment-driven CEO selection
Boards that want evidence, not gut feel, often choose Russell Reynolds Associates. Engagements begin with context interviews and a future-state scorecard; psychologists then guide finalists through Leadership Span simulations that test judgment under pressure, culture fit, and risk appetite.
The firm says its structured approach typically produces a qualified shortlist within eight weeks. That pace balances investor urgency with due diligence.
RRA’s Global CEO Turnover Index tracks tenure, prior CEO experience, and diversity trends, giving directors macro context before they lock the spec.
Ask in your RFP
- Does the eight-week milestone apply to CEO searches of our size and geography?
- How will simulation results support onboarding and development?
- What percentage of comparable placements remain in role after 24 months? RRA does not publish firm-wide retention data.
Choose RRA when you need more than a résumé stack; its assessment science challenges both candidates and board assumptions.
Heidrick & Struggles: best for turnaround searches and interim coverage
When succession follows an earnings miss or activist letter, boards often call Heidrick & Struggles. Beyond classic retained search, the firm runs a fast-moving On-Demand Talent arm. Client requests for interim C-suite leaders have risen 151 percent since 2021.
Why it fits messy transitions
- Dual track: stabilize tomorrow with an interim chief, hire a culture-shifting CEO six months later
- Heidrick Leadership Framework measures agility, inclusiveness, and mobilizing power; results feed into Heidrick Connect, a data platform that spots comparable leaders worldwide
- Taken private in December 2025, freeing capital for technology and interim expansion; ask about partner retention under the new model
Numbers to note
- Operates in 30 countries and 56 offices (global search scale)
- Retained-search fees generally equal about one-third of the CEO’s first-year cash pay
Ask in diligence
- Which partners stay from kickoff to offer under the new compensation structure?
- Median days to shortlist, offer, and start for crisis mandates?
- Diversity-slate and 24-month retention metrics for recent interim-to-permanent conversions?
Choose Heidrick when your board faces both immediate instability and long-term transformation and values keeping interim and permanent options under one roof.
Egon Zehnder: best for long-horizon, cross-border succession
Egon Zehnder operates as one global partnership: revenue is shared, so Zurich, Nairobi, and São Paulo collaborate rather than compete. The model supports 71 offices in 37 countries and helps prevent candidates from slipping through regional cracks.
Scale that fits decades-long planning
- 1,200 CEO appointments and 3,600 board assignments in the past five years, many starting years before a vacancy appears
- Proprietary Potential Model scores internal contenders’ head-room; Culture Profile spots friction points that derail smooth handovers
Boards value the firm’s discretion; Zehnder seldom publicizes client wins. The trade-off is limited public data on timelines, fees, or diversity outcomes.
Ask before engaging
- Median days from kickoff to signed offer for comparable cross-border searches
- Recent placement-retention rates by region
- How the 2025 acquisition of Prince Houston Group expanded U.S. financial-services coverage
Choose Zehnder when succession feels more like passing a baton across continents and generations than running a sprint.
Korn Ferry: best for enterprise scale and integrated talent strategy
Korn Ferry bundles search, assessment, pay benchmarking, and year-one coaching under one contract, handy when a conglomerate prefers a single provider.
Scale in numbers
- 6,500 executive-search engagements for 3,700 clients in FY 2026
- $924 million in executive-search fees and 560 dedicated consultants within a 17,000-employee workforce, enlarged by the September 1, 2026 AMS acquisition
Risk-reduction tools
- KF4D and a normative CEO database track thousands of leadership profiles worldwide
- CEO Impact Accelerator simulations stress-test finalists against your board’s real challenges
Rare fee transparency
SEC filings state that retained-search fees are “generally about one-third of the executive’s first-year cash compensation, plus expenses.”
Questions for your RFP
- Executive search is 32 percent of firm revenue; confirm the work will sit in the Board & CEO Services lane, not a volume practice.
- Ask for sector-specific timeline and 24-month retention metrics; Korn Ferry does not publish them.
- Clarify which partner stays post-signature; global reach (130+ offices in 50+ countries) can dilute attention without clear swim lanes.
For Fortune-scale enterprises that want strategy design, CEO search, and post-hire coaching in one engagement, Korn Ferry delivers depth few rivals can match.
JM Search: best for private-equity and middle-market value creation
Roughly 80 percent of JM Search’s work comes from PE sponsors and portfolio companies. Partners have run or sold businesses themselves, so discussions move quickly from team chemistry to EBITDA levers.
Scale in context
- 1,500 executive placements across C-suite and board roles in the past 24 months, with a 95 percent one-year retention rate and NPS 78
- Ranked No. 11 in Hunt Scanlon’s 2026 Americas revenue list and named to Forbes/Statista’s 2026 Best Executive Recruiting Firms
Why it’s PE-friendly
- Maps operator talent long before deals close, then fields partner-led teams across 13 U.S. hubs
- Draws on the Amrop alliance for support in 57 countries without adding excess staff
Validate before you sign
- The 1,500-placement figure covers all roles; ask for CEO-specific numbers and 24-month retention.
- Clarify deliverables and ownership on cross-border assignments routed through Amrop.
- Pin down fee tranches, milestone triggers, and replacement terms; JM follows a retained model but structures vary by mandate.
When your thesis requires a CEO who can double EBITDA in three years, JM’s operator focus and PE cadence make it a strong candidate, provided role-specific proof checks out.
How to choose among the eight
Start with two steps:
- Match the lane.
- Founder hand-off at a VC-backed SaaS company ? choose the tech boutiques.
- Public-company succession under proxy-advisor scrutiny ? select the global governance firms.
- PE roll-up with a three-year exit clock ? shortlist the private-equity specialists.
- Demand the same proof from every contender.
Consistency turns flashy sales decks into apples-to-apples data you can defend at the board table.
Ten diligence questions we use with clients
- How many comparable CEO or board searches have you closed in the last three years, and may we speak to those chairs?
- Who will lead the work day to day after the pitch, and how many other searches will that partner run at the same time?
- Show us your current off-limits list for our industry and geography.
- Provide median days to market map, shortlist, signed offer, and start for similar roles.
- Share retention outcomes at 12, 24, and 36 months for those placements.
- How are internal candidates benchmarked against the external slate, and who owns the assessment?
- Give us measurable diversity results from recent CEO or board mandates.
- Where do you use AI or psychometrics, and where does human judgment override the model?
- What onboarding, coaching, or unsuccessful-internal-candidate support is included in the fee?
- Detail the fee schedule, reimbursable expenses, compensation-uplift clauses, cancellation terms, and replacement guarantees.
Run the list in order. Firms that answer quickly reveal transparency; those that stall reveal risk, saving you months of regret.
The best partner is not the loudest brand. It is the team that proves, with data, how it will protect your strategy, culture, and timeline.
Frequently asked questions
What are the “Big Five” executive-search firms?
Industry analysts apply the label to Spencer Stuart, Heidrick & Struggles, Russell Reynolds Associates, Egon Zehnder, and Korn Ferry, which top Hunt Scanlon’s global revenue and consultant head-count tables.
What does a CEO search cost?
Public filings show Korn Ferry and Heidrick charge about one-third of the new CEO’s first-year cash compensation, plus expenses for travel, research, and assessments. Ask for an all-in figure, including onboarding.
How long does a CEO search take?
Process length depends on sector, geography, and internal-candidate dynamics. Russell Reynolds says its structured approach typically delivers a qualified shortlist within about eight weeks. True Search says clients are introduced to their eventual hire an average of 26 days into the search, though executive and decision speed shape the real calendar.
What’s the difference between retained and contingency search?
- Retained: exclusive advisory engagement; fees are staged and payable even if the first slate is not hired.
- Contingency: recruiter is paid only on placement; rarely used for CEO or board roles because confidentiality, conflict protection, and off-limits integrity matter more at the top.
Should the board evaluate internal and external candidates together?
Yes. Leading firms benchmark internal contenders against the external slate using the same success profile and assessment tools. That parity curbs bias, meets governance best practice, and keeps high-potential leaders engaged even if they finish second.
Still have a question we did not cover? Add it to your RFP, demand data, and compare answers side by side; transparency here prevents surprises later.
Wrapping up — your next move
Leadership transitions strain strategy, culture, and investor patience at once. The eight firms profiled address those moments in different lanes, and none is “best” for every mandate.
Ready to act?
- Shortlist two or three firms that fit your ownership model, industry, and urgency.
- Put the same ten diligence questions to each. No skipped lines, no sliding scales.
- Compare answers side by side; data outweighs glossy decks and instinct.
Follow that sequence and you replace guesswork with metrics you can defend at the next board meeting, giving your company the leader it deserves.