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Company lists · Data refreshed September 2026

Top 25 Change consulting firms based in Irvine, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 78 companies tracked

RevenueBase identified 78 change consulting firms headquartered in Irvine, United States as of September 2026 and tracks 622 professional contacts across them, including 296 with verified work emails. New York is the largest hub.

This list covers change consulting firms headquartered in Irvine, United States, 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 23, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 23, 2026 86% judged on-target in blind review
78Companies
622Contacts tracked
296Verified emails
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The 25 largest change consulting firms based in Irvine, United States

Ranked by team size
Top 25 of 78 change consulting firms based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to change 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1
Tk1sc
Partial evidenceIrvine, CA, United StatesHQ checked Sep 23, 2026201-500105 contacts →

Partial evidence

“We are now part of WSP, a world leading, multi-disciplinary consulting firm.#BecomingWSP #WeAreWSP”

Source: RevenueBase Database · checked Sep 23, 2026
2
Intueor Consulting, INC
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 202651-20052 contacts →

Indirect evidence

“Intueor specializes in Strategy, Operations & Business Productivity advisory work.”

Source: RevenueBase Database · checked Sep 23, 2026
3
Compassx Group
Partial evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-5047 contacts →

Partial evidence

“CompassX is a local-model consulting firm headquartered in SoCal.”

Source: RevenueBase Database · checked Sep 23, 2026
4
Concannon Business Consulting
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-5045 contacts →

Indirect evidence

“When resources and knowledge are constrained, your team will feel the pressure and your business may be at-risk for delays, lost revenue, and lost trust internally and externally.”

Source: RevenueBase Database · checked Sep 23, 2026
5
MLC And Associates
Partial evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-5038 contacts →

Partial evidence

“MLC and Associates is an award-winning, world-class management consulting firm, recognized for helping companies in every industry with business continuity, corporate performance…”

Source: RevenueBase Database · checked Sep 23, 2026
6
Nexvisionix
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 202651-20027 contacts →

Indirect evidence

“At Nexvisionix, we specialize in driving Strategy and Execution excellence, leveraging cutting-edge AI and software to guide global organizations towards breakthrough business…”

Source: RevenueBase Database · checked Sep 23, 2026
7
Connexus HUB
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-5020 contacts →

Indirect evidence

“Connexus Hub is a boutique business and technology advisory firm that specializes in CIO advisory, IT PMO support, and business transformation services, training, and operations…”

Source: RevenueBase Database · checked Sep 23, 2026
8
Ethos Human Capital Solutions
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 20261-1017 contacts →

Indirect evidence

“When in the midst of business transitions, the road to enduring business growth can be extremely winding and uncertain.”

Source: RevenueBase Database · checked Sep 23, 2026
9
Mentor Global Consultants
Partial evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-5016 contacts →

Partial evidence

“MENTOR is a management consulting firm that helps organizations to improve performance and reach their full potential, by offering a unique combination of business solutions.”

Source: RevenueBase Database · checked Sep 23, 2026
10
Helia Systems
Partial evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-509 contacts →

Partial evidence

“We are a dynamic and forward-thinking software consulting business committed to driving digital transformation for our clients.”

Source: RevenueBase Database · checked Sep 23, 2026
11
Matrixpoint Consulting
Partial evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-509 contacts →

Partial evidence

“MatrixPoint Consulting helps brand executives in QSR, CPG, and retail grow through marketing they can measure.”

Source: RevenueBase Database · checked Sep 23, 2026
12
The Saros Group
Partial evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-508 contacts →

Partial evidence

“We "fill an ever-growing value gap" in the consulting marketplace between strategy and commodity delivery services at cost significantly lower than big 4 services for like…”

Source: RevenueBase Database · checked Sep 23, 2026
13
Atellos Solutions
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-507 contacts →

Indirect evidence

“Atellos exists to solve the critical issues facing our clients, both large and small.”

Source: RevenueBase Database · checked Sep 23, 2026
14
Spellbound Development Group, INC
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-505 contacts →

Indirect evidence

“Spellbound is a leader in team inspired innovation, helping clients generate ideas and products that foster growth and enhance business value.”

Source: RevenueBase Database · checked Sep 23, 2026
15
International Executive Consulting, LLC
Strong evidenceIrvine, CA, United StatesHQ checked Sep 23, 20261-105 contacts →

Strong evidence

“Your Vision, Our Expertise - A Prosperous Future Built Together At International Executive Consulting, we specialize in driving business transformation and organizational change…”

Source: RevenueBase Database · checked Sep 23, 2026
16
Professional Corporate Consultants
Partial evidenceIrvine, CA, United StatesHQ checked Sep 23, 2026201-5004 contacts →

Partial evidence

“Professional Corporate Consultants is a full-service project consulting firm with a reputation for delivering customized solutions to meet the diverse needs of public and private…”

Source: RevenueBase Database · checked Sep 23, 2026
17
The Fantastic Labs
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 202611-504 contacts →

Indirect evidence

“Empower Your Business Potential with The Fantastic Labs!”

Source: RevenueBase Database · checked Sep 23, 2026
18
Exxeed
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 20261-103 contacts →

Indirect evidence

“EXXEED delivers Smart People Solutions™ that help leaders and their organizations grow and transform.”

Source: RevenueBase Database · checked Sep 23, 2026
19
Nexlogica
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 202651-2003 contacts →

Indirect evidence

“Nexlogica is your business navigator, mapping your road to success by delivering optimal technology solutions.”

Source: RevenueBase Database · checked Sep 23, 2026
20
Velocityone Group
Partial evidenceIrvine, United StatesHQ checked Sep 23, 202611-503 contacts →

Partial evidence

“VelocityOne Group is a global business consulting firm with offices in all major cities.”

Source: RevenueBase Database · checked Sep 23, 2026
21
PROXC
Partial evidenceIrvine, CA, United StatesHQ checked Sep 23, 202651-2003 contacts →

Partial evidence

“PROXC is a key global player in management consulting and advisory services field.”

Source: RevenueBase Database · checked Sep 23, 2026
22
Blue Wave Technology And Management Consulting
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 20261-103 contacts →

Indirect evidence

“Blue Wave helps clients navigate in today's complex business world.”

Source: RevenueBase Database · checked Sep 23, 2026
23
The Sales Advocate Group
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 20261-102 contacts →

Indirect evidence

“Committed to helping businesses accelerate growth, enhance strategy, and build teams.”

Source: RevenueBase Database · checked Sep 23, 2026
24
Mcgwire & CO
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 23, 2026
25
A Better Theory
Indirect evidenceIrvine, CA, United StatesHQ checked Sep 23, 20261-102 contacts →

Indirect evidence

“We solve complex problems for leaders and their organizations.”

Source: RevenueBase Database · checked Sep 23, 2026

Showing 25 of 78 change consulting firms based in Irvine, United States

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Change consulting firms based in Irvine, United States at a glance

As of Sep 23, 2026
47.6%Verified-email coverage
8.0Average contacts per company
1-10Median size (employees)
979.5%Largest-city concentration · New York
Sep 23, 2026Page data refreshed

Companies by employee count

1-10
49
11-50
19
51-200
8
201-500
2

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 78 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 change 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 Irvine, United States whose own description of what they do matches “change 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 change 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 change consulting firms, and records with no verified work email. Companies headquartered outside Irvine 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, 296 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 23, 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.

Change consulting firms by metro in the United States

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 change 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 change consulting firms are there based in Irvine, United States?

RevenueBase identified 78 change consulting firms headquartered in Irvine, United States 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?

Tk1sc, headquartered in Irvine, tops this list with the largest team on record.

Which city has the most change consulting firms?

New York leads with 764 headquartered companies, followed by Atlanta (518) and Chicago (506).

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 296 verified decision-maker contacts tracked across these 78 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 23, 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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