Company lists · Data refreshed September 2026
Top 25 Investor relations consulting firms based in the United States
RevenueBase identified 1,048 investor relations consulting firms headquartered in the United States as of September 2026 and tracks 21,606 professional contacts across them, including 8,387 with verified work emails. New York is the largest hub.
This list covers investor relations consulting firms headquartered in the 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 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 investor relations consulting firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 5,567 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,930 contacts → | ||||
Indirect evidence “Teneo is the global CEO advisory firm.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,489 contacts → | ||||
Partial evidence “Lincoln International, Inc.(NYSE: LCLN) is a trusted investment banking advisor to business owners and senior executives of leading private equity firms and their portfolio…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,160 contacts → | ||||
Indirect evidence “With over 1,200 professionals across 18 international offices, Riveron delivers tailored solutions for CFOs, private equity firms, and key stakeholders.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 959 contacts → | ||||
Indirect evidence “We are Notified, and your story goes here.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 693 contacts → | ||||
Indirect evidence “ICR is a strategic communications and advisory firm that helps management teams align how they communicate with how markets think.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 543 contacts → | ||||
Indirect evidence “Prosek Partners builds – and protects – the top brands in business.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 431 contacts → | ||||
Indirect evidence “Sodali & Co advises corporate clients worldwide as they navigate the complex dynamic of shareholder and stakeholder interests.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 349 contacts → | ||||
Partial evidence “DKC is a full service public relations, marketing and government affairs firm and part of the Acceleration Community of Companies, Based in New York City, and with offices in Los…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 290 contacts → | ||||
Indirect evidence “D.F.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 181 contacts → | ||||
Indirect evidence “Maximizing Value.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 177 contacts → | ||||
Indirect evidence “Alliance Advisors is an independent advisory firm focused on Shareholder Engagement & Solicitation, Compensation Advisory, Governance & Sustainability Advisory, M&A - Activism…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 168 contacts → | ||||
Partial evidence “For over 25 years, IGS has helped investors and management teams make better, faster decisions, from commercial due diligence, to growth strategy, pricing, and go-to-market…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 152 contacts → | ||||
Indirect evidence “A strategic communications agency, Inkhouse partners with innovators who are creating new markets or disrupting old ones-crafting stories and meeting audiences where they are.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 134 contacts → | ||||
Indirect evidence “The Results Company creates winning communications and outreach strategies for businesses and organizations at the local, state and federal levels.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 128 contacts → | ||||
Indirect evidence “You make decisions every day that impact the lives of many people.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 111 contacts → | ||||
Indirect evidence “Narrative is a full-service strategic communications firm creatively solving today’s most demanding reputational and public affairs challenges.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 110 contacts → | ||||
Indirect evidence “Progress Partners is a Boston and New York-based corporate advisory firm that works with buyers and sellers of emerging growth companies to complete M&A or private placement…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 102 contacts → | ||||
Partial evidence “KCSA is a fully integrated communications agency specializing in public relations, shareholder communications and social media, with expertise in cannabis, financial and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 99 contacts → | ||||
Strong evidence “Founded in 1998, Lambert is a strategic communications and advisory firm specializing in public relations, investor relations and integrated marketing.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 96 contacts → | ||||
Indirect evidence “For 30+ years, this mindset has fueled Rivel’s commitment to providing companies with actionable insights and advisory solutions that elevate performance and support informed…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 96 contacts → | ||||
Partial evidence “Mediant, a BetaNXT business, delivers investor communications solutions to brokers, corporate issuers and funds.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 90 contacts → | ||||
Strong evidence “LifeSci Advisors is a unique investor relations consultancy founded to provide companies in the life sciences field with a comprehensive solution to investor communications and…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 86 contacts → | ||||
Partial evidence “H/Advisors Abernathy is a trusted strategic communications advisor that partners with companies, investment firms and other organizations to engage core stakeholders as they…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 85 contacts → | ||||
Indirect evidence “We work with corporations, trade associations, and nonprofits to change hearts and minds, move public opinion, and help brands connect to the public conscience in a rapidly…” 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: investor relations 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 investor relations consulting firms.
- Partial evidence
- Its own public description names part of investor relations consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name investor relations 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 1,048 investor relations consulting firms based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 8,387 reachable decision-makers.
Free signup · no credit card
Investor relations consulting firms based in the United States at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,048 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 investor relations 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 the United States whose own description of what they do matches “investor relations 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 investor relations 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 investor relations consulting firms, and records with no verified work email. Companies headquartered outside United States 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, 8,387 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.
Investor relations 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 investor relations 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 investor relations consulting firms are there based in the United States?
RevenueBase identified 1,048 investor relations consulting firms headquartered in the 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?
Nerium International, headquartered in Dallas, tops this list with the largest team on record.
Which city has the most investor relations consulting firms?
New York leads with 213 headquartered companies, followed by Los Angeles (41) and Washington (28).
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 8,387 verified decision-maker contacts tracked across these 1,048 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.
Ready to reach these companies? Verified emails and direct dials for all 1,048 investor relations consulting firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Investor relations consulting firms by geography
- Investor relations consulting firms based in Melbourne, Australia
- Investor relations consulting firms based in Sydney, Australia
- Investor relations consulting firms based in Sao Paulo, Brazil
- Investor relations consulting firms based in Toronto, Canada
- Investor relations consulting firms based in Vancouver, Canada
- Investor relations consulting firms based in Paris, France
- Investor relations consulting firms based in Mumbai, India
- Investor relations consulting firms based in Milano, Italy
- Investor relations consulting firms based in Madrid, Spain
- Investor relations consulting firms based in Stockholm, Sweden
- Investor relations consulting firms based in Dubai, United Arab Emirates
- Investor relations consulting firms based in London, United Kingdom
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Investor relations consulting firms based in Melbourne, Australia
- Investor relations consulting firms based in Sydney, Australia
- Investor relations consulting firms based in Sao Paulo, Brazil
- Investor relations consulting firms based in Toronto, Canada
- Investor relations consulting firms based in Vancouver, Canada
- Investor relations consulting firms based in Paris, France