Company lists · Data refreshed September 2026

Top 25 Diversity consulting firms based in Seattle, United States

Name: Diversity consulting firms based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 171 companies tracked

RevenueBase identified 171 diversity consulting firms headquartered in Seattle, United States as of September 2026 and tracks 960 professional contacts across them, including 314 with verified work emails. New York is the largest hub.

This list covers diversity consulting firms headquartered in Seattle, 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 21, 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 21, 2026 86% judged on-target in blind review

171Companies

960Contacts tracked

314Verified emails

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The 25 largest diversity consulting firms based in Seattle, United States

Ranked by team size

Top 25 of 171 diversity consulting firms based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to diversity 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	Wimmer Solutions	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	501-1,000	262 contacts →
	Indirect evidence “We help you to see the full picture, bringing our experts together with you to co-develop approaches and operationalize plans across the dimension of strategy, people, process…” Source: RevenueBase Database · checked Sep 21, 2026
2	Reverb	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	46 contacts →
	Indirect evidence “Empowering People, Building Culture 100% women-owned, Certified B Corp, WBENC certified From hiring your first employee to developing your team, we’re here to help you grow your…” Source: RevenueBase Database · checked Sep 21, 2026
3	Waldron CPI NOW Sparkeffect	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	51-200	29 contacts →
	Indirect evidence “Waldron CPI (a Career Partners International affiliate) is now SparkEffect.” Source: RevenueBase Database · checked Sep 21, 2026
4	Humbition Consulting	Partial evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	24 contacts →
	Partial evidence “Humbition Consulting is a minority, women, and disabled led firm with the bold vision of transforming every corporation to be socially responsible and equitable.” Source: RevenueBase Database · checked Sep 21, 2026
5	Plum Coaching & HR Consulting	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “Plum provides a range of HR services, as well as career-related coaching.” Source: RevenueBase Database · checked Sep 21, 2026
6	Tamazari	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “Tamazari solves complex business challenges with clarity, execution, and measurable results.” Source: RevenueBase Database · checked Sep 21, 2026
7	Lake Partners Strategy Consultants	Partial evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	16 contacts →
	Partial evidence “Lake Partners offers high-end strategy consulting without the high-end attitude.” Source: RevenueBase Database · checked Sep 21, 2026
8	Releady	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	51-200	14 contacts →
	Indirect evidence “Releady is a diverse and certified women-owned firm that provides technology, engineering, data, digital, marketing, and creative talent solutions.” Source: RevenueBase Database · checked Sep 21, 2026
9	Sojust Solutions	Partial evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Partial evidence “SoJust Solutions is a majority women-owned and minority-owned business, offering full service staffing and consulting services to organizations of all sizes.” Source: RevenueBase Database · checked Sep 21, 2026
10	The Steve Trautman CO	Indirect evidence	Seattle, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “At STC, we work at the intersection of business strategy and talent risk management, helping leaders identify and mitigate risks during critical transformations.” Source: RevenueBase Database · checked Sep 21, 2026
11	Alithi Management Consulting	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “Alithi’s team of expert strategists, policy leaders, sourcing specialists, education reformers, community builders, data scientists, and impact experts have spent decades honing…” Source: RevenueBase Database · checked Sep 21, 2026
12	Intelligent Partnerships	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “Intelligent Partnerships, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
13	AGG	Indirect evidence	Seattle, United StatesHQ checked Sep 21, 2026	1-10	10 contacts →
	Indirect evidence “AGG is a husband-wife team operating out of West Seattle with over 25 years’ experience in manufacturing recruiting & marketing and offering job seekers professional services such…” Source: RevenueBase Database · checked Sep 21, 2026
14	Lindsey T. H. Jackson	Indirect evidence	Seattle, United StatesHQ checked Sep 21, 2026	1-10	9 contacts →
	Indirect evidence “What's your strategy for creating a more Diverse, Equitable and Inclusive organization and service?” Source: RevenueBase Database · checked Sep 21, 2026
15	Greatheart Consulting	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	1-10	8 contacts →
	Indirect evidence “At Greatheart, we believe that transformation happens when leadership and inclusion intersect.” Source: RevenueBase Database · checked Sep 21, 2026
16	Regroup	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	1-10	8 contacts →
	Indirect evidence “At Regroup (regroup.co), we help innovative companies develop leaders, managers, teams, and culture.” Source: RevenueBase Database · checked Sep 21, 2026
17	Sodo Consulting	Partial evidence	Seattle, United StatesHQ checked Sep 21, 2026	1-10	8 contacts →
	Partial evidence “Welcome to Sodo Consulting: Your Source for Leadership, Organizational and Team Development Excellence Is it time to turn your goals into reality?” Source: RevenueBase Database · checked Sep 21, 2026
18	Chanin Kelly-Rae Consulting	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	1-10	8 contacts →
	Indirect evidence “Our Philosophy - Build Nothing for Us with Us.” Source: RevenueBase Database · checked Sep 21, 2026
19	Tfwb Engineers INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “TFWB Engineers formerly Travis, Fitzmaurice & Associates is an electrical, telecommunications, and security design consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026
20	Green Side Consulting	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “Everyone has their superpowers.” Source: RevenueBase Database · checked Sep 21, 2026
21	S Piper Staffing LLC	Indirect evidence	Seattle, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “S Piper Staffing is an industry-leading nationwide woman owned minority recruiting firm that identifies talented job seekers whose interests and values align with those of their…” Source: RevenueBase Database · checked Sep 21, 2026
22	Executive Diversity Services, INC	Strong evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	6 contacts →
	Strong evidence “Executive Diversity Services, Inc.(EDS) is a consulting and organizational development company serving the global marketplace.” Source: RevenueBase Database · checked Sep 21, 2026
23	Firefly Inclusion Solutions	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “We help high-impact organizations embed inclusion into their systems so they can effectively leverage the talent, experiences and backgrounds of every employee.” Source: RevenueBase Database · checked Sep 21, 2026
24	Boardready	Partial evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “BoardReady is a non profit that seeks to catapult board diversification through data, experience and network strategies.” Source: RevenueBase Database · checked Sep 21, 2026
25	Humin Inclusion Partners	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “Everything we do is built on the premise that complex business challenges require ongoing focus on multiple levers at once.” Source: RevenueBase Database · checked Sep 21, 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: diversity 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 diversity consulting firms.
Partial evidence: Its own public description names part of diversity consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name diversity 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 171 diversity consulting firms based in Seattle, United States

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Diversity consulting firms based in Seattle, United States at a glance

As of Sep 21, 2026

32.7%Verified-email coverage

5.6Average contacts per company

1-10Median size (employees)

352.6%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

141

11-50

51-200

501-1,000

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 171 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 diversity 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 Seattle, United States whose own description of what they do matches “diversity 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 diversity 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 diversity consulting firms, and records with no verified work email. Companies headquartered outside Seattle 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, 314 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 21, 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.

Diversity 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 diversity 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 diversity consulting firms are there based in Seattle, United States?

RevenueBase identified 171 diversity consulting firms headquartered in Seattle, 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?

Wimmer Solutions, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most diversity consulting firms?

New York leads with 603 headquartered companies, followed by Atlanta (342) and Chicago (342).

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 314 verified decision-maker contacts tracked across these 171 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 21, 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.