Company lists · Data refreshed September 2026

Top 25 Transaction support consulting firms worldwide

Name: Transaction support consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 16,980 companies tracked

RevenueBase identified 16,980 transaction support consulting firms worldwide as of September 2026 and tracks 191,839 professional contacts across them, including 77,141 with verified work emails. The United States is the largest market and London the largest hub.

This list covers transaction support consulting firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026. Country and city lists for transaction support consulting firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

16,980Companies

191,839Contacts tracked

77,141Verified emails

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The 25 largest transaction support consulting firms worldwide

Ranked by team size

Top 25 of 16,980 transaction support consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to transaction support consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ey-Parthenon	Partial evidence	London, United KingdomHQ checked Sep 29, 2026	10001+	17,070 contacts →
	Partial evidence “Our unique combination of transformative strategy, transactions and corporate finance delivers real-world value – solutions that work in practice, not just on paper.” Source: RevenueBase Database · checked Sep 29, 2026
2	Alvarez & Marsal	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	10001+	13,099 contacts →
	Indirect evidence “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Source: RevenueBase Database · checked Sep 29, 2026
3	Rothschild & CO	Indirect evidence	Paris, ItalyHQ checked Sep 29, 2026	1,001-5,000	5,161 contacts →
	Indirect evidence “Rothschild & Co is one of the world's largest independent financial advisory groups.” Source: RevenueBase Database · checked Sep 29, 2026
4	Lazard	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,912 contacts →
	Indirect evidence “Founded in 1848, Lazard is the preeminent financial advisory and asset management firm, with operations in North and South America, Europe, the Middle East, Asia, and Australia.” Source: RevenueBase Database · checked Sep 29, 2026
5	Houlihan Lokey	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,576 contacts →
	Indirect evidence “Houlihan Lokey, Inc.(NYSE:HLI) is a leading global investment bank recognized for delivering independent strategic and financial advice to corporations, financial sponsors, and…” Source: RevenueBase Database · checked Sep 29, 2026
6	Evercore	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,296 contacts →
	Indirect evidence “Evercore (NYSE: EVR) is a premier global independent investment banking advisory firm.” Source: RevenueBase Database · checked Sep 29, 2026
7	Moelis & Company	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,742 contacts →
	Indirect evidence “Moelis & Company (“Moelis”) is a leading global independent investment bank that provides innovative strategic advice and solutions to a diverse client base, including…” Source: RevenueBase Database · checked Sep 29, 2026
8	Lincoln International	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,489 contacts →
	Indirect evidence “Lincoln International, Inc.(NYSE: LCLN) is a trusted investment banking advisor to business owners and senior executives of leading private equity firms and their portfolio…” Source: RevenueBase Database · checked Sep 29, 2026
9	PJT Partners	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	1,420 contacts →
	Indirect evidence “PJT Partners is a premier, global, advisory-focused investment bank that was built from the ground up to be different.” Source: RevenueBase Database · checked Sep 29, 2026
10	Kpmgジャパン/kpmg Japan	Indirect evidence	千代田区, JapanHQ checked Sep 29, 2026	5,001-10,000	1,419 contacts →
	Indirect evidence “KPMGKPMG310 KPMG KPMG KPMG KPMG KPMG FAS KPMG Forensic & Risk Advisory KPMG KPMG KPMG KPMG Ignition Tokyo KPMG” Source: RevenueBase Database · checked Sep 29, 2026
11	STOUT	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,345 contacts →
	Partial evidence “Stout is a global advisory firm specializing in corporate finance, accounting and transaction advisory, valuation, financial disputes, claims, and investigations.” Source: RevenueBase Database · checked Sep 29, 2026
12	Riveron	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,160 contacts →
	Indirect evidence “With over 1,200 professionals across 18 international offices, Riveron delivers tailored solutions for CFOs, private equity firms, and key stakeholders.” Source: RevenueBase Database · checked Sep 29, 2026
13	WIPRO	Indirect evidence	Valencia, SpainHQ checked Sep 29, 2026	n/a	1,097 contacts →
	Indirect evidence “En Wipro impulsamos el progreso.” Source: RevenueBase Database · checked Sep 29, 2026
14	CFGI	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	501-1,000	1,063 contacts →
	Indirect evidence “As a leading global accounting and business advisory firm, CFGI provides solutions to solve clients’ most complex problems, without the restrictions created by auditor…” Source: RevenueBase Database · checked Sep 29, 2026
15	SBI Capital Markets	Indirect evidence	Mumbai, IndiaHQ checked Sep 29, 2026	201-500	931 contacts →
	Indirect evidence “SBI Capital Markets Limited (SBICAPS) is registered with SEBI as a Category I Merchant Banker (Registration No.” Source: RevenueBase Database · checked Sep 29, 2026
16	Nassau Street Partners	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	n/a	904 contacts →
	Indirect evidence “Nassau Street Partners is an independent capital advisory firm focused on mergers and acquisitions, capital markets advisory, and strategic financial solutions for early-stage and…” Source: RevenueBase Database · checked Sep 29, 2026
17	Eight Advisory	Strong evidence	Paris, FranceHQ checked Sep 29, 2026	501-1,000	895 contacts →
	Strong evidence “Eight Advisory, Europe's leading independent advisory firm specialising in financial, operational and strategy consulting, is involved in transactions, restructuring and…” Source: RevenueBase Database · checked Sep 29, 2026
18	Perella Weinberg	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	883 contacts →
	Indirect evidence “Perella Weinberg is a leading global independent financial services firm, founded in 2006 to address the need for experienced, trusted and unconflicted advice in the financial…” Source: RevenueBase Database · checked Sep 29, 2026
19	Accuracy	Partial evidence	Paris, SingaporeHQ checked Sep 29, 2026	501-1,000	868 contacts →
	Partial evidence “Accuracy is a wholly independent international consulting firm providing advice to company management and shareholders for their strategic or critical decisions, notably in…” Source: RevenueBase Database · checked Sep 29, 2026
20	Duff & Phelps	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	5,001-10,000	790 contacts →
	Indirect evidence “For nearly 100 years, Duff & Phelps helped clients make confident decisions in the areas of valuation, real estate, taxation and transfer pricing, disputes, M&A advisory and other…” Source: RevenueBase Database · checked Sep 29, 2026
21	FBR	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 29, 2026	n/a	789 contacts →
	Indirect evidence “In June 2017, B.” Source: RevenueBase Database · checked Sep 29, 2026
22	Idbi Capital Markets & Securities LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 29, 2026	501-1,000	784 contacts →
	Indirect evidence “SEBI Reg No:NSE (CM, F&O) & BSE No:0893 \| DP ID: IN300-079/450 \| NSE Member No- 07066 \| BSE Clg.” Source: RevenueBase Database · checked Sep 29, 2026
23	FRP Advisory	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	501-1,000	731 contacts →
	Indirect evidence “FRP is a leading national business advisory firm.” Source: RevenueBase Database · checked Sep 29, 2026
24	DC Advisory	Indirect evidence	London, United KingdomHQ checked Sep 29, 2026	501-1,000	721 contacts →
	Indirect evidence “DC Advisory is an international investment bank committed to making a difference.” Source: RevenueBase Database · checked Sep 29, 2026
25	Centerview Partners	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	693 contacts →
	Indirect evidence “Centerview Partners is a premier provider of independent investment-banking advisory services.” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: transaction support consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names transaction support consulting firms.
Partial evidence: Its own public description names part of transaction support consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transaction support consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 16,980 transaction support consulting firms worldwide

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Transaction support consulting firms worldwide at a glance

As of Sep 29, 2026

40.2%Verified-email coverage

11.3Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · London

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11,969

11-50

4,080

51-200

634

201-500

154

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among transaction support consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for transaction support consulting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “transaction support consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names transaction support consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among transaction support consulting firms, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 77,141 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Transaction support consulting firms by location

107 lists · largest first

Every Transaction support consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names transaction support consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many transaction support consulting firms are there worldwide?

RevenueBase identified 16,980 transaction support consulting firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Ey-Parthenon, headquartered in London, tops this list with the largest team on record.

Which country has the most transaction support consulting firms?

The United States leads with 3,753 companies, followed by India (1,029) and the United Kingdom (914). Every transaction support consulting firms list by country and city is linked on this page.

Which city has the most transaction support consulting firms?

London leads with 571 headquartered companies, followed by New York (453) and Sao Paulo (441).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 77,141 verified decision-maker contacts tracked across these 16,980 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.