Company lists · Data refreshed November 2026
Top 25 Operational due diligence firms worldwide
RevenueBase identified 129 company matches for operational due diligence firms worldwide as of November 2026 and tracks 611 professional contacts across them, including 200 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for operational due diligence firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for operational due diligence firms follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.
The 25 largest operational due diligence firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 81 contacts → | ||||
Exact match “Performance gets attention.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 41 contacts → | ||||
Exact match “SINCERIUS is frontrunner in data-driven due diligence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 26 contacts → | ||||
Exact match “Blue Heron Research Partners is an international leader in qualitative due diligence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 22 contacts → | ||||
Exact match “FactRight is the premier source of credible perspective and advice for wealth managers seeking access to alternative investments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 20 contacts → | ||||
Exact match “We have helped dozens of clients gain insight into critical areas of concern by thoroughly reviewing their target company’s information and asking intelligent questions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 9 contacts → | ||||
Exact match “At Lestrade, we specialise exclusively in Operational Due Diligence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 8 contacts → | ||||
Exact match “Co-founded by Quentin Thom & James Newman, perfORM Due Diligence Services Limited ("perfORM"), a JTC Group company, is a multijurisdictional and standalone operational due…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 8 contacts → | ||||
Exact match “Collected Intelligence is an independent due diligence firm dedicated to helping venture capital, private equity and mutual funds gain a deeper, more complete understanding of the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 7 contacts → | ||||
Exact match “At Waypoint, we believe that investing in competent people with a proven idea can create great companies with world-class products and services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 7 contacts → | ||||
Exact match “Beaumont Advisors is a specialized consulting firm that provides hedge fund and private equity fund operational due diligence services to institutional investors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 6 contacts → | ||||
Exact match “LandMAR is a full-service brokerage firm specializing in due diligence, post-acquisition data integration and back-office administration.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 5 contacts → | ||||
Exact match “OCA Consulting delivers superior operational, compliance, accounting and due diligence solutions to start-up and emerging private funds and institutional investors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 5 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 5 contacts → | ||||
Exact match “Fortrust Diligence provides financial due diligence for mergers and acquisitions throughout the country, specializing in the insurance brokerage industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 5 contacts → | ||||
Exact match “CRE | TAG manages transactional due diligence processes and solutions with an owners mindset.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 4 contacts → | ||||
Exact match “Espile Insights is a boutique investment research and due diligence firm supporting hedge funds, private equity firms, and corporate clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 4 contacts → | ||||
Exact match “Commercial and financial due diligence services for the lower-middle market including Feasibility Studies, Quality of Earnings Reports, and Business Valuations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 4 contacts → | ||||
Exact match “We provide comprehensive M&A financial and analytical due diligence services, combining our expertise in finance, accounting, M&A, analytics, and business strategy to deliver…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 3 contacts → | ||||
Exact match “Silver Mountain Group is an independent organization providing operational due diligence and related services to investors in alternatives and long-only strategies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 3 contacts → | ||||
Exact match “SF|Diligence is a full-service financial due diligence firm dedicated to providing our clients assurance in their investments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 2 contacts → | ||||
Exact match “4D conducts due diligence services into technology, products, sales, and companies on behalf of our clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match “Highwire Consulting works with Private Equity investors and banks to provide Management Due Diligence, advising our clients on the potential, capabilities and risks of senior…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 2 contacts → | ||||
Exact match “Illume Partners is an independent provider of due diligence services for fund investors and fund managers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 2 contacts → | ||||
Exact match “Athena Ridge Advisors provides an independent, comprehensive, institutional quality Operational Due Diligence Assessment enabling our clients to meet diligence objectives for an…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “Fortifinancial, Ltd.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “operational due diligence firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 129 operational due diligence firms worldwide
See the full list, filter by size, metro and specialty, and access 200 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Operational due diligence firms worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for operational due diligence firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “operational due diligence firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 200 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Operational due diligence firms by location
1 lists · largest firstEvery Operational due diligence firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “operational due diligence firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many operational due diligence firms are there worldwide?
RevenueBase identified 129 company matches for operational due diligence firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Castle Hall tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most operational due diligence firms?
The United States leads with 58 companies. Every operational due diligence firms list by country and city is linked on this page.
Which city has the most operational due diligence firms?
London leads with 10 company records, followed by New York (9) and Mumbai (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 200 professional contacts with verified work emails tracked across these 129 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 129 operational due diligence firms worldwide. Start with a free account, no credit card.
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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 SmartSearch, 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.
More company lists
Company intelligence · public preview
Top 25 operational due diligence firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 129 matching company records for operational due diligence firms worldwide, with 611 tracked contacts and 200 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 operational due diligence firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Castle Hallcastlehalldiligence.comHQ: Montreal, NS, CanadaReported employees: 51-200 | Montreal, NS, Canada | 51-200 | Exact match | 81 contacts → |
“Performance gets attention.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Sinceriussincerius.nlHQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 41 contacts → |
“SINCERIUS is frontrunner in data-driven due diligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Blue Heron Research Partnersblueheronrp.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 26 contacts → |
“Blue Heron Research Partners is an international leader in qualitative due diligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Factright, LLCfactright.comHQ: Eden Prairie, United StatesReported employees: 11-50 | Eden Prairie, United States | 11-50 | Exact match | 22 contacts → |
“FactRight is the premier source of credible perspective and advice for wealth managers seeking access to alternative investments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Asenti Diligence Partners LLCasentipartners.comHQ: Arlington, GA, United StatesReported employees: 11-50 | Arlington, GA, United States | 11-50 | Exact match | 20 contacts → |
“We have helped dozens of clients gain insight into critical areas of concern by thoroughly reviewing their target company’s information and asking intelligent questions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Lestradelestradefs.comHQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 9 contacts → |
“At Lestrade, we specialise exclusively in Operational Due Diligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Perform DUE Diligence Services Limitedperformdd.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Co-founded by Quentin Thom & James Newman, perfORM Due Diligence Services Limited ("perfORM"), a JTC Group company, is a multijurisdictional and standalone operational due…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Collected Intelligence LLCcollected-intelligence.comHQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 8 contacts → |
“Collected Intelligence is an independent due diligence firm dedicated to helping venture capital, private equity and mutual funds gain a deeper, more complete understanding of the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Waypoint Pathfinders, LLPwaypoint.coHQ: Novato, CA, United StatesReported employees: 11-50 | Novato, CA, United States | 11-50 | Exact match | 7 contacts → |
“At Waypoint, we believe that investing in competent people with a proven idea can create great companies with world-class products and services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Beaumont Advisors Limitedbeaumontadvisors.comHQ: Halifax, NS, CanadaReported employees: 11-50 | Halifax, NS, Canada | 11-50 | Exact match | 7 contacts → |
“Beaumont Advisors is a specialized consulting firm that provides hedge fund and private equity fund operational due diligence services to institutional investors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Landmar Energy Services, LLClandmarenergy.comHQ: Fort Worth, TX, United StatesReported employees: 11-50 | Fort Worth, TX, United States | 11-50 | Exact match | 6 contacts → |
“LandMAR is a full-service brokerage firm specializing in due diligence, post-acquisition data integration and back-office administration.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  OCA Consulting, LLCoca-consulting.comHQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 5 contacts → |
“OCA Consulting delivers superior operational, compliance, accounting and due diligence solutions to start-up and emerging private funds and institutional investors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Code & COcodeandco.com HQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 5 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 |  Fortrust Diligencefortrustdiligence.comHQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 5 contacts → |
“Fortrust Diligence provides financial due diligence for mergers and acquisitions throughout the country, specializing in the insurance brokerage industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  CRE TAGcretag.comHQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 5 contacts → |
“CRE | TAG manages transactional due diligence processes and solutions with an owners mindset.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Espile Insightsespileinsights.comHQ: Torrance, CA, United StatesReported employees: 1-10 | Torrance, CA, United States | 1-10 | Exact match | 4 contacts → |
“Espile Insights is a boutique investment research and due diligence firm supporting hedge funds, private equity firms, and corporate clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Veritas Development Advisorsveritasda.comHQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 4 contacts → |
“Commercial and financial due diligence services for the lower-middle market including Feasibility Studies, Quality of Earnings Reports, and Business Valuations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Synexosynexo.ioHQ: Raleigh, NC, United StatesReported employees: 1-10 | Raleigh, NC, United States | 1-10 | Exact match | 4 contacts → |
“We provide comprehensive M&A financial and analytical due diligence services, combining our expertise in finance, accounting, M&A, analytics, and business strategy to deliver…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Silver Mountain Groupsilvermtnllc.comHQ: New York, United StatesReported employees: 1-10 | New York, United States | 1-10 | Exact match | 3 contacts → |
“Silver Mountain Group is an independent organization providing operational due diligence and related services to investors in alternatives and long-only strategies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  SF Diligencesfdiligence.comHQ: New York, United StatesReported employees: 1-10 | New York, United States | 1-10 | Exact match | 3 contacts → |
“SF|Diligence is a full-service financial due diligence firm dedicated to providing our clients assurance in their investments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  4d DUE Diligence4dduediligence.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“4D conducts due diligence services into technology, products, sales, and companies on behalf of our clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Highwire Consultinghighwireconsulting.co.ukHQ: United KingdomReported employees: 1-10 | United Kingdom | 1-10 | Exact match | 2 contacts → |
“Highwire Consulting works with Private Equity investors and banks to provide Management Due Diligence, advising our clients on the potential, capabilities and risks of senior…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Illume Partners LLCillumedd.comHQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 2 contacts → |
“Illume Partners is an independent provider of due diligence services for fund investors and fund managers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Athena Ridge Advisors LLCathenaridgeadvisors.comHQ: Chicago, MA, United StatesReported employees: 1-10 | Chicago, MA, United States | 1-10 | Exact match | 2 contacts → |
“Athena Ridge Advisors provides an independent, comprehensive, institutional quality Operational Due Diligence Assessment enabling our clients to meet diligence objectives for an…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Fortifinancialfortifinancial.comHQ: Scottsdale, NY, United StatesReported employees: 1-10 | Scottsdale, NY, United States | 1-10 | Exact match | 2 contacts → |
“Fortifinancial, Ltd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 129 company matches
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Operational due diligence firms: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
129 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 129 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Operational due diligence firms by location
1 lists · largest firstEvery Operational due diligence firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for operational due diligence firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many operational due diligence firms did RevenueBase find worldwide?
The saved snapshot records 129 matching company records, 611 tracked contacts and 200 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 operational due diligence firms worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/operational-due-diligence-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 operational due diligence firms worldwide
RevenueBase records 129 matching company records for operational due diligence firms worldwide, with 611 tracked contacts and 200 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 operational due diligence firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Castle Hallcastlehalldiligence.com HQ: Montreal, NS, CanadaReported employees: 51-200 | Montreal, NS, Canada | 51-200 | Exact match | 81 contacts → |
“Performance gets attention.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Sinceriussincerius.nl HQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 41 contacts → |
“SINCERIUS is frontrunner in data-driven due diligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Blue Heron Research Partnersblueheronrp.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 26 contacts → |
“Blue Heron Research Partners is an international leader in qualitative due diligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Factright, LLCfactright.com HQ: Eden Prairie, United StatesReported employees: 11-50 | Eden Prairie, United States | 11-50 | Exact match | 22 contacts → |
“FactRight is the premier source of credible perspective and advice for wealth managers seeking access to alternative investments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Asenti Diligence Partners LLCasentipartners.com HQ: Arlington, GA, United StatesReported employees: 11-50 | Arlington, GA, United States | 11-50 | Exact match | 20 contacts → |
“We have helped dozens of clients gain insight into critical areas of concern by thoroughly reviewing their target company’s information and asking intelligent questions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Lestradelestradefs.com HQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 9 contacts → |
“At Lestrade, we specialise exclusively in Operational Due Diligence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Perform DUE Diligence Services Limitedperformdd.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 8 contacts → |
“Co-founded by Quentin Thom & James Newman, perfORM Due Diligence Services Limited ("perfORM"), a JTC Group company, is a multijurisdictional and standalone operational due…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Collected Intelligence LLCcollected-intelligence.com HQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 8 contacts → |
“Collected Intelligence is an independent due diligence firm dedicated to helping venture capital, private equity and mutual funds gain a deeper, more complete understanding of the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Waypoint Pathfinders, LLPwaypoint.co HQ: Novato, CA, United StatesReported employees: 11-50 | Novato, CA, United States | 11-50 | Exact match | 7 contacts → |
“At Waypoint, we believe that investing in competent people with a proven idea can create great companies with world-class products and services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Beaumont Advisors Limitedbeaumontadvisors.com HQ: Halifax, NS, CanadaReported employees: 11-50 | Halifax, NS, Canada | 11-50 | Exact match | 7 contacts → |
“Beaumont Advisors is a specialized consulting firm that provides hedge fund and private equity fund operational due diligence services to institutional investors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Landmar Energy Services, LLClandmarenergy.com HQ: Fort Worth, TX, United StatesReported employees: 11-50 | Fort Worth, TX, United States | 11-50 | Exact match | 6 contacts → |
“LandMAR is a full-service brokerage firm specializing in due diligence, post-acquisition data integration and back-office administration.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | OCA Consulting, LLCoca-consulting.com HQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 5 contacts → |
“OCA Consulting delivers superior operational, compliance, accounting and due diligence solutions to start-up and emerging private funds and institutional investors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Code & COcodeandco.com HQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 5 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Fortrust Diligencefortrustdiligence.com HQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 5 contacts → |
“Fortrust Diligence provides financial due diligence for mergers and acquisitions throughout the country, specializing in the insurance brokerage industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | CRE TAGcretag.com HQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 5 contacts → |
“CRE | TAG manages transactional due diligence processes and solutions with an owners mindset.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Espile Insightsespileinsights.com HQ: Torrance, CA, United StatesReported employees: 1-10 | Torrance, CA, United States | 1-10 | Exact match | 4 contacts → |
“Espile Insights is a boutique investment research and due diligence firm supporting hedge funds, private equity firms, and corporate clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Veritas Development Advisorsveritasda.com HQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 4 contacts → |
“Commercial and financial due diligence services for the lower-middle market including Feasibility Studies, Quality of Earnings Reports, and Business Valuations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Synexosynexo.io HQ: Raleigh, NC, United StatesReported employees: 1-10 | Raleigh, NC, United States | 1-10 | Exact match | 4 contacts → |
“We provide comprehensive M&A financial and analytical due diligence services, combining our expertise in finance, accounting, M&A, analytics, and business strategy to deliver…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Silver Mountain Groupsilvermtnllc.com HQ: New York, United StatesReported employees: 1-10 | New York, United States | 1-10 | Exact match | 3 contacts → |
“Silver Mountain Group is an independent organization providing operational due diligence and related services to investors in alternatives and long-only strategies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | SF Diligencesfdiligence.com HQ: New York, United StatesReported employees: 1-10 | New York, United States | 1-10 | Exact match | 3 contacts → |
“SF|Diligence is a full-service financial due diligence firm dedicated to providing our clients assurance in their investments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | 4d DUE Diligence4dduediligence.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“4D conducts due diligence services into technology, products, sales, and companies on behalf of our clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Highwire Consultinghighwireconsulting.co.uk HQ: United KingdomReported employees: 1-10 | United Kingdom | 1-10 | Exact match | 2 contacts → |
“Highwire Consulting works with Private Equity investors and banks to provide Management Due Diligence, advising our clients on the potential, capabilities and risks of senior…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Illume Partners LLCillumedd.com HQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 2 contacts → |
“Illume Partners is an independent provider of due diligence services for fund investors and fund managers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Athena Ridge Advisors LLCathenaridgeadvisors.com HQ: Chicago, MA, United StatesReported employees: 1-10 | Chicago, MA, United States | 1-10 | Exact match | 2 contacts → |
“Athena Ridge Advisors provides an independent, comprehensive, institutional quality Operational Due Diligence Assessment enabling our clients to meet diligence objectives for an…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Fortifinancialfortifinancial.com HQ: Scottsdale, NY, United StatesReported employees: 1-10 | Scottsdale, NY, United States | 1-10 | Exact match | 2 contacts → |
“Fortifinancial, Ltd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Operational due diligence firms: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
129 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 129 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Operational due diligence firms by location
1 lists · largest firstEvery Operational due diligence firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for operational due diligence firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many operational due diligence firms did RevenueBase find worldwide?
The saved snapshot records 129 matching company records, 611 tracked contacts and 200 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 operational due diligence firms worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/operational-due-diligence-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗