Interim and Fractional Executive Search Firms: 10 Options to Call When a Leader Leaves

Leadership gaps cause serious disruptions.

According to Russell Reynolds Associates' 2025 Global CEO Turnover Index, 234 CEOs departed their roles globally in 2025. Fractional and interim executives provide immediate leadership solutions, delivering experienced C-suite talent for short-term or project-based engagements across healthcare, finance, technology, and manufacturing.

This guide to the best interim executive firms breaks down ten that place interim and fractional executives, what each one is actually best at, and what we could and couldn't verify about their published results.

Disclosure: Alpha Apex Group publishes this list and is included in it. We held our own entry to the same standard as the other nine, and the numbering doesn't indicate rank.

(Looking for a permanent hire instead? See our list of executive search firms here.)

How Interim Hiring Has Changed in 2026

Heidrick & Struggles' 2026 Talent Lens Survey, based on 3,810 independent talent respondents surveyed in August 2025, found that 42% of interim and fractional projects now run six months or longer, up from just 27% in 2021.

Daily rates moved too: 30% of respondents reported earning more per day in 2025 than in 2024. The same survey found 74% of interim leaders are actively upskilling in AI tools, and 44% expect clients to start requiring that expertise.

As Sunny Ackerman, Global Managing Partner at Heidrick & Struggles, says,

"Interim leaders are no longer a stopgap; they are how forward-looking organizations turn volatility into advantage, bringing the precise expertise, speed, and objectivity needed to move critical agendas forward, exactly when and where it matters most."

EO Executives' 2025 Interim Management Report, a survey of 1,671 interim managers, found change management (31%) and crisis management were the top reasons clients bring in interim leadership.

For a broader view of how firms are talking about this shift, watch this interview with Tom Applegarth on The IJK Podcast:

Compare the Top 10 Firms at a Glance

Global firms (Boyden, Heidrick & Struggles, Korn Ferry, Spencer Stuart) fit multi-country or board-level interim needs; Cowen Partners, StevenDouglas and Caldwell fit interim CFO and finance leadership; Alpha Apex Group, True Search and Keller fit fast or growth-stage searches.

Why Partner with an Interim and Fractional Executive Search Firm

How Fast Can an Interim Executive Start?

Interim leaders bridge gaps while permanent searches continue, reducing costly vacancy periods. Firms offering accelerated timelines provide a real competitive advantage during crises or transformations.

When Does a Leadership Change Call for an Interim Executive?

Interim executives provide continuity for boards, private equity sponsors, and management teams navigating succession, audits, and strategy resets.

What Does Leaving the Seat Open Cost?

Weekly vacancy costs compound through lost revenue, slower decisions, missed projects, and increased workload stress on the remaining team. Interim placements convert idle time into execution while a permanent search proceeds in parallel.

What Do Interim CFOs Typically Fix?

Interim CFOs are frequently brought in specifically to stabilize cash positions and reset financial controls after a departure or a crisis. High-performing interim engagements often convert to permanent roles through interim-to-hire pathways once both sides confirm fit.

Where Do Search Firms Find Interim Leaders?

Executive search firms maintain networks of pre-screened fractional leaders ready for deployment.

Industry-specific expertise ensures cultural alignment and operational familiarity from day one, which matters more in a fractional or interim engagement than almost anywhere else, as there's no ramp-up period to absorb a mismatch.

Best Interim and Fractional Executive Search Firms

1. Cowen Partners

Cowen Partners is a retained search firm built around a senior-partner-led model: the partner who pitches the engagement is the one who runs it. It also runs a dedicated interim CFO practice.

The firm says it delivers qualified candidate slates in an average of three weeks from kickoff and completes placements in an average of six weeks, with 500+ executive placements and a 99% candidate retention rate.

It publishes named case studies, including a documented CFO search for Addition Financial Credit Union, which led to the appointment of a new CFO with over 18 years of financial experience.

Best for: PE-backed and pre-IPO companies whose board wants a senior partner leading the search from day one. For more options in this segment, see our list of private equity executive search firms.

2. Korn Ferry

Korn Ferry, founded in 1969 and headquartered in Los Angeles, is an organizational consultancy that also runs searches.

Its "Success Profiles" framework ties every candidate evaluation back to compensation benchmarking, org design, and succession planning, work most boutique interim specialists on this list simply don't offer in-house.

This is a firm built for large-scale transformation and RPO work as much as for a single interim hire, so a smaller company may find its scale is more than they need.

Best for: Large enterprises running a leadership transition that needs compensation benchmarking and org-design consulting bundled with the search itself.

3. Alpha Apex Group

Alpha Apex Group places interim leaders, who hold a role while a permanent search runs, and fractional executives, who give senior judgment a few days a month. We have completed over 2,000 placements since our founding in 2020.

We target an initial executive profile within 72 hours and a completed placement in around 43 days, faster for urgent interim roles. The clearest evidence of that speed is a placement example published on our own site: a two-month outreach campaign to 400+ SaaS and venture-backed companies that produced 55 responses and two competing offers, the accepted one at $300k+ OTE.

For specialist interim technology leaders, see our lists of fractional and interim CIO companies and fractional CISO services.

Best for: Companies that need a candidate slate within days and want the search firm to also assess culture risk before an offer goes out.

4. Boyden

Boyden runs interim and retained search out of more than 75 offices in 45+ countries, which makes it one of the few firms on this list realistically built for a leadership gap that spans multiple regions at once.

Ask: "If our interim need covers three countries, will one partner own the engagement, or does each local office run its own search?"

Best for: Multinational companies whose interim need spans several countries and who want board-level advisory alongside the placement.

5. True Search

True Search, founded in 2012 and headquartered in Haddonfield, New Jersey, built two proprietary platforms most competitors on this list don't have an equivalent to: Thrive, its internal talent relationship management system, and AboveBoard, a diversity-focused executive community aimed at widening access for underrepresented candidates.

That combination is the firm's actual differentiator, with two specific systems doing specific jobs.

Best for: Venture-backed and high-growth companies that want sourcing run through a diversity-focused talent network.

6. Keller

Keller Executive Search runs retained and contingent searches in 71+ countries, built around cross-border sourcing for companies entering new markets or a post-funding growth phase.

It pledges to replace an executive hire who doesn't meet expectations during the first 365 days, and stays in contact with the client and the new hire for 6 months after a search to follow up on performance.

Ask: "Does your 365-day replacement guarantee apply to interim placements, or only to permanent hires?"

Best for: Searches that need candidates sourced across several countries through one global network.

7. StevenDouglas

StevenDouglas has run executive search and interim placements for over 35 years, with a dedicated interim management division sitting alongside project-based consulting for finance, accounting, HR, IT, and operations.

This way, a client can move between an interim hire and a longer consulting engagement with the same firm. The company opened new offices in Houston, Atlanta, and Cincinnati in 2025 as part of a documented expansion.

Best for: Mid-market finance, accounting, or HR teams that want the same firm running the interim placement and a broader process review.

8. Heidrick & Struggles

Heidrick & Struggles, founded in 1953 and headquartered in Chicago, delivers interim leadership through a dedicated arm layered on top of its core retained search and consulting business.

What sets this firm apart is its original research: its Talent Lens survey, covered above, tracks how long interim engagements run and how day rates move. In late 2025, the firm also completed a $1.3 billion take-private transaction backed by Advent International and Corvex.

Ask: "Which findings from your Talent Lens survey shape how you would price an interim CFO for us?"

Best for: Organizations that want their interim search backed by original, large-sample research on the interim talent market itself.

9. Spencer Stuart

Spencer Stuart, headquartered in Chicago with 60+ offices across 30+ countries, is best known for CEO succession work, and its interim and fractional offering runs through the same Leadership Advisory Services team that handles permanent succession planning.

At Spencer Stuart, the interim hire and the eventual permanent search are typically coordinated by the same people.

Ask: "If the interim leader is also a candidate for the permanent role, who runs that assessment?"

Best for: Boards running a CEO succession process where the interim hire needs to be coordinated with a parallel permanent search.

10. Caldwell Partners

Caldwell Partners, established in 1970 and based in Toronto, offers interim and project-based recruiting support alongside retained search, and pairs boutique-style account handling with IQTalent, an AI-driven sourcing division acquired in 2021 that the firm uses for higher-volume searches than a typical boutique could staff manually.

Its practices cover nonprofit, public-sector, academic and medical leadership as well as corporate roles.

Best for: Companies that want AI-assisted sourcing for higher candidate volume with boutique-level account attention.

How Much Does an Interim or Fractional Executive Cost?

A full-time interim CFO typically costs about $15,000 to $35,000 a month, and fractional executives usually bill day rates of roughly $1,500 to $4,000, or monthly retainers for a set number of days.

• Interim (near full-time): one 2026 benchmark puts most full-load interim CFO engagements between $15,000 and $35,000 per month.
• Fractional (part-time): another 2026 rate guide puts US fractional CFO day rates at $1,500 to $4,000, with retainers of $8,000 to $18,000 a month for two days a week.
• Search fees: if the firm places the interim leader through retained search, firms typically charge 25% to 35% of an executive's first-year cash compensation. For a CFO or CEO with a $300,000 annual package, that's approximately $75,000 to $105,000.

Short-term interim and fractional contracts avoid the long-term salary, benefits, and severance costs that come with a full-time hire. Many interim contracts conclude with 30 days' notice, which gives you flexibility that reduces total cost compared to an extended permanent search or organizational over-hiring.

Should You Hire an Interim or a Fractional Executive?

Hire an interim executive when a seat is empty and needs someone full-time for a defined period; hire a fractional executive when you need senior judgment a few days a week on an ongoing basis.

Interim executives typically work full-time during a vacancy, merger or turnaround, and the engagement is designed to end once a permanent leader starts. Fractional executives divide their time among several organizations, addressing specific priorities like marketing strategy, financial restructuring, or technology implementation.

How Do Healthcare, Nonprofit and PE-Backed Companies Hire Interim Executives?

Use a firm with a dedicated practice for your sector: PE-backed companies often want a partner-led firm used to sponsor timelines, while nonprofits and healthcare systems need search committees and governance built into the process.

• PE-backed companies: Cowen Partners works with PE-backed and pre-IPO companies and runs a dedicated interim CFO practice.
• Nonprofit, public sector and healthcare: Caldwell runs nonprofit, public-sector, academic and medical leadership practices, with interim and project-based recruiting support.
• Finance and accounting functions: StevenDouglas pairs its interim division with project-based finance and accounting consulting.

How to Choose the Right Interim and Fractional Executive Search Firm

Choose a firm that has placed interim leaders in your function and industry, can start someone within weeks, and is clear about the contract terms before you sign.

Does the Firm Know Your Industry and Function?

Choose a partner that can demonstrate proven industry expertise within your business environment. Industry-familiar firms identify leaders bringing appropriate technical background and familiarity with the relevant regulatory, financial, and competitive dynamics.

Search firms may specialize in multiple industries, but should be able to point to a specific partner or specialist for yours.

How Quickly Can the Firm Place Someone?

Interim executive search demands swift execution. Strong interim search firms deliver qualified, pre-vetted candidates within weeks or days.

Ask about first profile and interview timelines, track record on time-to-fill, the candidate evaluation process, and post-placement success rates, and ask the firm to back those claims with a specific example.

How Does the Firm Vet Candidates for Fit?

Leadership transitions fail through cultural misalignment more often than through a skills gap. Leadership IQ's study of 5,247 hiring managers across 312 organizations found that 89% of hiring failures trace back to attitude and fit and that roughly 46% of new hires fail outright within 18 months.

Select firms employing rigorous candidate vetting, including background checks, talent assessments, and cultural-fit analysis, and ask what assessment methodology they use.

Which Engagement Models Does the Firm Offer?

Flexibility is the core of modern fractional executive recruiting. A firm should be able to offer interim-to-hire, project-based, and fractional staffing models and let you move between them as priorities change.

Firms providing both retained executive search and interim management can give you a seamless handoff from short-term stabilization to long-term leadership continuity.

What Should the Contract Cover?

Settle these terms before the interim executive starts:

• Employment: is the executive employed by the firm, or an independent contractor (W-2 vs. 1099)?
• Notice: how much notice does each side give to end the engagement?
• Conversion: is there a fee if you hire the interim executive permanently?
• Rates: how is the day or monthly rate set, and what happens if the assignment extends?
• Conflicts: how does the firm check for conflicts with a fractional executive's other clients?

What Technology and Reporting Should You Expect?

Data powers effective, quick executive search. Select firms using technology platforms and candidate-sourcing analytics that they can actually walk you through.

Transparent communication and regular progress reporting matter more in an interim engagement than a standard search, since stakeholders typically need to be kept aligned before the appointment even starts.

Find Your Next Interim or Fractional Executive with AAG

To be truly agile, you need the right leader in place when and where it's needed most. Fractional and interim executive search firms are indispensable for organizations navigating transformation, leadership turnover, or post-merger integration.

Whether you're looking for a fractional C-suite executive or an interim leader to bridge to a permanent hire, Alpha Apex Group can support the process from search through onboarding.

Get in touch with us today.

Frequently Asked Questions

What is a fractional executive?

Fractional executives are highly experienced senior leaders working with organizations on a part-time, project-based, or contract basis. They deliver specialized expertise managing a specific business function, leading a transformation, or filling a leadership gap during a transition.

When should a company hire an interim executive?

Companies consider interim executives for major events including leadership turnover, mergers and acquisitions, bankruptcy recovery, or digital transformation. Interim leaders provide stability and execution speed for special projects or business continuity.

How long do interim executive assignments typically last?

Most interim engagements span three to nine months depending on project scope and transition goals. Some evolve into interim-to-hire arrangements, where the interim executive becomes a full-time hire once both parties confirm cultural and strategic alignment.

What industries rely most on fractional and interim leadership?

Fractional and interim placements are common in technology, healthcare, manufacturing, finance, and private equity, sectors facing rapid growth, regulatory change, or restructuring that creates a need for quick, experienced C-suite hiring.

What roles does AAG specialize in?

AAG places C-suite leaders across all functions, including CEOs, CFOs, COOs, CMOs, CTOs, and CHROs, serving technology, healthcare, private equity, and additional industries.