Company lists · Data refreshed September 2026
Top 25 Merger integration consulting firms based in Spain
RevenueBase identified 464 merger integration consulting firms headquartered in Spain as of September 2026 and tracks 2,999 professional contacts across them, including 446 with verified work emails. Madrid is the largest hub.
This list covers merger integration consulting firms headquartered in Spain, 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 28, 2026.
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.
The 25 largest merger integration consulting firms based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 317 contacts → | ||||
Partial evidence “We are a global consulting, technology, and professional services firm with over 25 years of experience.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 108 contacts → | ||||
Indirect evidence “Improven es una consultora estratégica de negocio que trabaja a medida con sus clientes, ayudándoles a crecer de forma sostenible y a generar valor e impacto real en la economía y…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 95 contacts → | ||||
Partial evidence “NORGESTION is a management consulting company operating from five offices in Spain (Madrid, Barcelona, Bilbao, San Sebastian and Pamplona) and specialised in three areas: ·…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 66 contacts → | ||||
Indirect evidence “Ayudamos a nuestros clientes a liberar el potencial de sus organizaciones y equipos.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 65 contacts → | ||||
Indirect evidence “Empresa de Consultoría especializada en- Internacionalización: Colaboramos con las empresas en su expansión internacional- Estrategia: Ayudamos en la dinamización, elaboración y…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 55 contacts → | ||||
Indirect evidence “Somos un equipo dinámico y flexible especializado en consultoría de negocio, tecnológica, organización y optimización de procesos.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 48 contacts → | ||||
Indirect evidence “EOSA es una empresa de consultoría especializada en las áreas de estrategia y organización con 30 años de experiencia.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 40 contacts → | ||||
Indirect evidence “We are a business consultancy that supports organisational transformation from within.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 33 contacts → | ||||
Indirect evidence “Una firma de consultoría estratégica y de operaciones independiente, orientada a facilitar la transformación empresarial.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 31 contacts → | ||||
Partial evidence “En Plus Consulting ayudamos a las organizaciones a crecer desde dentro, desarrollando liderazgo, cultura y resultados sostenibles.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 29 contacts → | ||||
Indirect evidence “Somos una firma de consultoría especializada en la optimización integral de canales comerciales y de atención al cliente.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 29 contacts → | ||||
Indirect evidence “Ayudamos a las empresas a incorporar en sus organizaciones a los mejores profesionales.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 27 contacts → | ||||
Partial evidence “Active Development is a boutique consulting & training firm that help solve our client's toughest challenges and build a better working world for all.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 26 contacts → | ||||
Partial evidence “TwinPikes is a management consulting firm with international reach, working with ambitious leaders and organizations to develop and implement strategies, enabling their…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 25 contacts → | ||||
Indirect evidence “Improva es una consultoría ejecutiva de estrategia y operaciones formada por un equipo multidisciplinar que ayuda a las organizaciones a adaptarse al entorno, desarrollarse con…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 24 contacts → | ||||
Indirect evidence “Los profesionales de Delta Consultores estamos para ayudarte a solucionar cualquier problema y a desarrollar tus oportunidades.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 24 contacts → | ||||
Indirect evidence “Somos una consultoría de gestión empresarial especializada en el área de operaciones, estrategia, formación y RRHH.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 24 contacts → | ||||
Indirect evidence “NAIBC es una sociedad especializada en la prestación de servicios de consultoría empresarial, reestructuración societaria, adquisición, fusión y liquidación de entidades del…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 24 contacts → | ||||
Indirect evidence “Nuestro propósito es encontrar certezas en la complejidad del mundo de los negocios, facilitando el acceso a las ideas fundamentales del Management para impulsar el desarrollo del…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 23 contacts → | ||||
Indirect evidence “Juntos transformamos organizaciones En SOLVE Advisors Group trabajamos con una idea clara: mejorar procesos no es suficiente.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 23 contacts → | ||||
Indirect evidence “Somos una consultora que trabaja la transformación de las empresas a través de las personas y la tecnología.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 23 contacts → | ||||
Partial evidence “108 Global is a management consulting firm, driven by the ability to deliver high-value, actionable insights and solutions to our clients.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 19 contacts → | ||||
Indirect evidence “Somos una consultora de eficiencia comercial y recursos humanos.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 18 contacts → | ||||
Indirect evidence “Puente China was born, grows and consolidates itself as a professional services company that offers its clients a 360 degree coverage of the M&A universe, focusing on the main…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 17 contacts → | ||||
Indirect evidence “Sellcom Group Spain nace de la fusión de tres compañías con reconocida trayectoria en el mercado español y bajo la cobertura internacional del Grupo Sellcom, grupo empresarial de…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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: merger integration 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 merger integration consulting firms.
- Partial evidence
- Its own public description names part of merger integration consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name merger integration 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 464 merger integration consulting firms based in Spain
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Merger integration consulting firms based in Spain at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 464 companies.
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 merger integration 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.
- What qualifies
- Companies headquartered in Spain whose own description of what they do matches “merger integration 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 merger integration 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 merger integration consulting firms, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
- 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, 446 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 28, 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.
Merger integration consulting firms by metro
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 merger integration 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 merger integration consulting firms are there based in Spain?
RevenueBase identified 464 merger integration consulting firms headquartered in Spain 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?
Excelia, headquartered in Pozuelo De Alarcon, tops this list with the largest team on record.
Which city has the most merger integration consulting firms?
Madrid leads with 145 headquartered companies, followed by Barcelona (93) and Valencia (19).
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 446 verified decision-maker contacts tracked across these 464 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 28, 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.
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