Top executive search firms and how to choose one
The top executive search firms by size are 5 global retained firms, followed by thousands of boutique specialists and contingency recruiters. Size is rarely the deciding factor. This guide sets out the firm types, how retained fees are billed, what to get in writing, and when an in house team is the better route.
Top executive search firms in 60 seconds
- The same 5 global firms are named as the largest by 2 of their own annual reports and by trade press.
- Most ranked lists online are published by a firm or a vendor that places itself first.
- Retained firms bill about one-third of estimated first-year pay in 3 instalments, hire or no hire.
- Off limits agreements and the named lead consultant shape your result more than the brand does.
- Many VP and director searches can be run in house with sourcing software instead.
What is an executive search firm?
Executive search firm A firm an employer pays to find, approach and assess senior leaders who are usually not job hunting. The same service trades under several names: executive recruiting firms, executive placement firms, top headhunting firms.
The firm works for the employer, not the candidate. Its consultants, the people searchers mean by top executive headhunters, map the market for one seat, approach quietly, and write up a short list.
The 4 kinds of executive search firms
| Type | What it is | Fits when | Watch for |
|---|---|---|---|
| Global executive search firms | International executive search firms with many practice areas, working retained and exclusive. | The seat is a CEO, board or group role, or the search crosses countries. | Off limits lists, and which office and consultant actually run your search. |
| Boutique executive search firms | A single industry, function or region, often built by former partners of larger firms. | You want the consultant who has already placed this exact seat. | Depth outside the niche, and bench capacity if your search runs long. |
| Contingency and executive recruiting firms | Paid only when you hire someone they put forward, and usually not exclusive. | The role is below the top team and candidates are reachable. | Speed rewarded over assessment, and the same profile sent to several buyers. |
| In house executive recruiting | Your own talent team plus sourcing software, no external fee per hire. | You fill the same senior seats repeatedly, or research is the real bottleneck. | Confidentiality on a replacement search, and recruiter capacity. |
Who are the largest executive search firms?
Three sources name the same 5, listed here alphabetically: Egon Zehnder, Heidrick & Struggles, Korn Ferry, Russell Reynolds Associates and Spencer Stuart. Korn Ferry's 2026 annual report names the other 4 as its traditional competitors. Heidrick & Struggles' 2024 annual report names the same set from its side. Hunt Scanlon's Big Five list arrives at the same 5. The trade nickname is SHREK.
Before you trust a top ten executive search firms list, or a top 20 executive search firms list, check what it measures. Hunt Scanlon's Americas roundup orders the top executive search companies in the US by reported revenue, which measures size. The Forbes and Statista list is built from survey recommendations by recruiters, hiring managers and candidates, which measures reputation. Neither measures fit for your seat.
Read rankings with care
Almost every page ranking the best executive recruiting firms is published by a search firm or a software vendor sitting at number 1 on its own list. Check who wrote it before you trust the order.
Retained executive search firms vs contingency firms
| Retained search firms | Contingency firms | |
|---|---|---|
| When the firm is paid | On a retainer, whether or not you hire a candidate they found. | Only when a candidate they recommended is placed. |
| Exclusivity | Generally exclusive for the assignment. AESC members work retained and exclusive. | Often non exclusive, so several firms work the same seat at once. |
| Typical roles | CEO and board seats, C level and scarce leadership roles. | Manager to director roles where candidates are easier to reach. |
| What you get | A defined specification, written candidate reports, references on the finalist, offer support. | A slate of interested candidates, usually with lighter assessment. |
| The incentive | Paid for the process, so the firm can afford to say no one fits yet. | Paid for a hire, so the pressure is to submit quickly. |
| Risk to you | You pay in full even if the search closes with no hire. | Less market coverage, and profiles you may already have seen. |
How retained search fees are billed
- The retainer is set from the estimated package Retained search firms are typically paid a retainer of about one-third of the estimated first year compensation for the seat. Korn Ferry describes the same basis on first year cash compensation.
- It is invoiced in thirds, from signing Heidrick & Struggles bills the retainer and indirect expenses in one-third increments over 3 months, starting in the month you accept the contract. The calendar drives the invoices, not the hire.
- Expenses are added on top Indirect expenses are calculated as a percentage of the retainer with dollar limits per search. Direct expenses, such as travel, are billed as incurred.
- An uptick may follow the offer If the package the hire actually accepts is higher than the original estimate, the firm is often authorised to bill one-third of the excess. Both filings call this uptick revenue.
What to ask before you sign with a search firm
- Who leads this search day to day, and who does the research behind it?
- Which companies are off limits to you, and for how long?
- Do you have conflicts with clients in our market right now?
- Will scope, timing, fees and the payment schedule be in writing?
- What happens if the hire leaves early, and what is the guarantee?
- How often will we see market response and the developing candidate list?
- Have you completed this seat recently, and can we speak to that client?
- How do you assess finalists and take references?
- How is candidate data stored, shared and deleted?
Match the firm to the seat
You are choosing a CEO search firm for a successor or a new non executive director, and it stays confidential until an offer is close.
CEO executive search firms with completed searches at your stage, a named consultant who ran them, and off limits arrangements that leave your competitor set reachable.
Top executive search firms for board of directors seats are listed in the AESC Find a Firm directory.
The HR leader is leaving and you want a CHRO who can rebuild the function rather than maintain it.
A consultant who assesses people leaders regularly, a clear view of how the seat differs at your headcount, and references from an HR client not a CEO client.
Top HR executive search firms cluster in the AESC directory under functional practices.
You are hiring a CTO, CIO or an AI leader and most of the credible people are not answering messages from recruiters.
Recent technology searches at your stage, a researcher who can read engineering depth, and a plan for approaching people who already have equity elsewhere.
Hunt Scanlon's Technology Top 50 lists top IT executive search firms alphabetically, not ranked.
A health system or provider group needs a senior clinical or operational leader, and credentialling matters as much as leadership.
Searches completed in your setting, familiarity with clinical governance, and an approach that respects how small the candidate community is.
Hunt Scanlon's Healthcare Top 50 and the ACHE directory both list healthcare firms A to Z.
Growth has stalled and you want a marketing leader who has run the channel mix you are actually betting on.
Evidence of placing marketing leaders in your business model rather than just your industry, and a consultant who can tell brand builders from demand generators.
Top marketing executive search firms and digital executive search firms sit under the AESC practice filters.
When in house executive search is the better route
The large firms say this themselves. Heidrick & Struggles' filing notes that clients may decide to run executive searches using in house personnel. Korn Ferry's filing lists AI enabled companies as new competition, and notes that some organisations develop internal talent acquisition solutions instead. The AESC's own standards take a measured line: artificial intelligence may support the work, but it should never take the place of professional judgment.
Split the work into 4 parts. Research, which means knowing who holds this seat and where. Approach. Assessment. Close. Software has become good at the first part and useful on the second. The last 2 are where a consultant earns the retainer, which is why confidential succession work stays with a firm even when your best executive recruiters are already in house.
Search firm or in house team, situation by situation
| Situation | Use a retained firm | Run it in house |
|---|---|---|
| Confidential CEO, board or succession search | Yes. A third party can approach people without naming you. | No. Discretion is the whole job here. |
| Replacing an incumbent who does not know yet | Yes. The firm absorbs the confidentiality risk. | No. Your own team is too easy to trace. |
| VP or director seat in a function you hire often | Optional, if nobody has capacity. | Yes. You already know the market and the story. |
| The same senior seat across several regions | Expensive to repeat search by search. | Yes. The pool you build carries into the next opening. |
| Assessment, referencing and offer negotiation handled for you | Yes. That is what the retainer buys. | Only if you have senior people to do it. |
From a one line brief to a senior long list
Advanced Filters, split into the person and their current employer. Example values.
If you do run the search yourself, the research half is the part to automate. The Cognitive does AI candidate sourcing across ~900M profiles. You write the brief in plain English and it becomes 2 groups of structured filters: one about the person, one about their current employer.
Running a senior search in house
Do
- Write the brief as a person profile plus an employer profile, the way a researcher thinks
- Hold 1 or 2 genuine must-haves and let everything else rank rather than exclude
- Read the reasoning on a profile before anyone is approached
- Approach in your own name, with a short note written for that person
- Keep finalist assessment, references and the offer with senior people
Do not
- Running a confidential replacement search from your own inbox
- Mass messaging senior candidates with an obviously templated opener
- Treating a strong profile match as if it were an assessment
- Skipping written terms later if you do bring a firm in
Check the reasoning before you make the approach
The deep read on 1 masked profile. Example content.
A search firm hands you a written view of each candidate. In house, the closest equivalent is a deep read: "Why them?" returns a verdict, the reasons behind it, what to verify in a screen and a career note. Requirements show as met or as still unverified.
After the approach
You reveal a verified email or phone only for the people you want, and a reveal that finds nothing is not charged. Open roles are re-scanned overnight, so a seat you cannot fill keeps collecting people. Follow up runs as an email and SMS sequence in your own name, on a Day 0, plus 3, plus 4 cadence. It stops when someone replies, and replies are sorted by intent.
For the VP and director layer, a live two way AI video interview can carry the first round: the rubric is fixed per role while the questions adapt to each answer. Start free at app.thecognitive.io/signup, or watch a sample round at /try-interview first.
Keep reading
Executive search software · What is headhunting? · AI sourcing tool · Hire a CTO · Hire a VP of Engineering · Boolean search generator
Frequently asked questions
Who are the big 5 executive search firms?
Listed alphabetically: Egon Zehnder, Heidrick & Struggles, Korn Ferry, Russell Reynolds Associates and Spencer Stuart. Hunt Scanlon's Big Five list names those 5, ordered by reported revenue. Korn Ferry and Heidrick & Struggles each name the other 4 as their main executive search competitors in their annual reports. The trade nickname for the group is SHREK.
Who are Korn Ferry's competitors?
The Korn Ferry competitors named in its own annual report are Egon Zehnder, Heidrick & Struggles, Russell Reynolds Associates and Spencer Stuart, its traditional executive search rivals. The same filing adds that specialist boutiques and AI enabled companies compete for the same work, and that some organisations build internal talent acquisition solutions instead of buying search.
What is the difference between retained executive search firms and contingency firms?
Retained firms are paid for the assignment whether or not you hire someone they found, and they normally work exclusively on it. Contingency firms are paid only when a candidate they recommended is placed, and often work the same role alongside others. AESC member firms operate on a retained and exclusive basis for executive search.
How much do retained search firms charge?
Both Heidrick & Struggles and Korn Ferry state in their annual reports that the retainer is typically about one-third of the estimated first year compensation for the role. Heidrick bills it in one-third increments over 3 months from contract acceptance, adds indirect expenses as a percentage of the retainer, and may bill one-third of any excess if the final package is higher. Your contract may differ.
What are the top healthcare executive search firms?
We do not rank them, because every ranked list of top healthcare executive recruiting firms we found was published by a firm on it. Hunt Scanlon's Healthcare Top 50 is listed alphabetically and the American College of Healthcare Executives keeps a directory aimed at candidates. Shortlist on 3 tests: recent searches in your setting, the named consultant's own record, and off limits arrangements across your peer systems.
What are the top technology executive search firms and adtech firms?
Treat sector top 10s with suspicion, including adtech ones: the publisher is usually on the list. Hunt Scanlon's Technology Top 50 is alphabetical, so use it as a directory of executive search firms for technology leaders and then test each firm. Ask for recent CTO, CIO or AI leader searches at your stage. For executive search firms with a strong European technology practice, ask which office and which consultant will actually run it.
Are boutique executive search firms better than global firms?
Neither wins by default. Korn Ferry's filing notes that firms with a smaller client base are subject to fewer off limits arrangements, which is a real structural advantage for a boutique when your competitors are somebody's client. Global firms offer reach across countries and functions. Ask both for the off limits list before you decide.
How long does an executive search take?
The AESC says a successful search can take anywhere from a few weeks to several months, depending on the role and the talent available. Anyone quoting you a precise average is generalising. Note that a retained invoice usually follows the calendar rather than the hire, so a slow search still bills on schedule.
Can we run an executive search in house instead of hiring a firm?
For many VP and director seats, yes. The large firms list in house search among their competition in their own filings. Keep confidential CEO, board and succession work with a firm. For the rest, The Cognitive turns a plain English brief into person and employer filters, ranks the pool, and keeps everyone found in that role for the next opening.
What should a search firm contract include?
The AESC Client Bill of Rights says written terms should cover the lead advisor serving you, the scope, the timing, the fees and payment schedule, the deliverables, and specific terms that might include guarantees, off limits, conflicts and data management. Guarantee length varies by firm, so read it rather than assume it.
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