Company lists · Data refreshed October 2026

Top 25 Insurance defense attorney groups based in Chicago, United States

RevenueBase identified 62 company matches for insurance defense attorney groups associated with Chicago, United States as of October 2026 and tracks 2,932 professional contacts across them, including 1,733 with verified work emails. Across the United States, New York is the largest hub for this category (67 companies); Chicago follows with 62.

This list covers company matches for insurance defense attorney groups associated with Chicago, United States, 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 October 17, 2026.

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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 17, 2026 How this list was built
62Companies
2,932Contacts tracked
1,733Verified emails
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The 25 largest insurance defense attorney groups based in Chicago, United States

Ranked by team size
Top 25 of 62 company matches for insurance defense attorney groups based in Chicago, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchChicago, IL, United StatesHQ recorded Oct 17, 2026501-1,000635 contacts →

Exact match

“As a national law firm defending corporations, non-profits, associations and their officers & directors in every manner of litigation, O'Hagan Meyer provides individualized…”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
2Exact matchChicago, IL, United StatesHQ recorded Oct 17, 2026501-1,000428 contacts →

Exact match

“Litchfield Cavo LLP began as a small firm of attorneys experienced in insurance and business defense matters.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
3Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202651-200257 contacts →

Exact match

“Tressler LLP is a national law firm headquartered in Chicago, with ten offices located in six states - California, Illinois, Missouri, New Jersey, New York and Pennsylvania.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
4Exact matchChicago, IL, United StatesHQ recorded Oct 17, 2026201-500242 contacts →

Exact match

“Founded over 80 years ago, Clausen Miller represents businesses, insurers and professionals through strategic, cost-effective litigation and counseling across the nation and…”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
5Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202651-200133 contacts →

Exact match

“Wiedner & McAuliffe is a Chicago-based workers’ compensation defense and civil litigation firm.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
6Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202651-200108 contacts →

Exact match

“Since 2001, Foran Glennon has provided sophisticated legal services in a cost-effective manner.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
7Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202651-200103 contacts →

Exact match

“BatesCarey LLP has dedicated its practice to protecting the interests of insurers and reinsurers while shaping the trends of insurance law throughout the United States and abroad.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
8Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202651-20088 contacts →

Exact match

“Since 1924, our family has continued a tradition begun by Jacob W.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
9Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5058 contacts →

Exact match

“Christensen Hsu Sipes LLP is a law firm with offices in Chicago, Northwest Indiana, Los Angeles, and Sacramento.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
10Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202651-20053 contacts →

Exact match

“BCM Law was founded in 1997 with a vision to provide skilled and aggressive defense for Employers and Insurers for complex legal matters such as Workers’ Compensation Defense…”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
11Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202651-20051 contacts →

Exact match

“Walker Wilcox, with offices in Chicago and Houston, provides our clients with effective and innovative legal services that deliver value and solutions.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
12Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202651-20042 contacts →

Exact match

“Meckler Bulger Tilson Marick & Pearson LLP (MBT) is one of the nation's leading litigation law firms - with a prominent record of important legal victories on behalf of some of…”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
13Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5041 contacts →

Exact match

“NZA is a partnership of acclaimed trial and litigation lawyers, fearless and accomplished in their representation of their clients' interests anywhere in the U.S.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
14Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5038 contacts →

Exact match

“Hinkhouse Williams Walsh LLP is a firm of seasoned trial lawyers who understand the unique needs of insurers and reinsurers.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
15Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5036 contacts →

Exact match

“We are a client–focused civil litigation firm serving the insurance and business communities throughout the United States.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
16Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5034 contacts →

Exact match

“McKenna Storer is a full service defense litigation law firm dedicated to providing the highest quality legal services to individual and corporate clients as well as Insurance…”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
17Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5029 contacts →

Exact match

“Founded in 1991, we are an A-V rated insurance defense firm, committed to providing our clients with personalized services and performance unmatched by larger law firms.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
18Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5028 contacts →

Exact match

“Keefe, Campbell, Biery & Associates presents a clear choice to clients that need defense lawyers.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
19Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5023 contacts →

Exact match

“Patton & Ryan is a Civil Litigation Defense firm specializing in defending insurers and self-insureds in matters of Catastrophic Loss, Professional Liability, Products and…”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
20Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5022 contacts →

Exact match

“Lindsay, Pickett & Postel (LPP) concentrates in the areas of insurance defense, insurance coverage, and appellate litigation in Illinois and Wisconsin.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
21Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5021 contacts →

Exact match

“The Chicago law firm of Anderson, Rasor & Partners, LLP, is a defense trial firm with a tradition of success and excellence.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
22Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5018 contacts →

Exact match

“Cremer Law, LLC has been serving the litigation needs of the business and insurance communities since 1995.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
23Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5018 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
24Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5016 contacts →

Exact match

“DRI is an international organization of attorneys defending the interests of business and individuals in civil litigation.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
25Exact matchChicago, IL, United StatesHQ recorded Oct 17, 202611-5014 contacts →

Exact match

“At Knell O'Connor Danielewicz, we have a history of meeting our clients’ needs and exceeding their expectations.”

Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase

Showing 25 of 62 insurance defense attorney groups based in Chicago, United States

See the full list, filter by size, metro and specialty, and access 1,733 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Insurance defense attorney groups based in Chicago, United States at a glance

As of Oct 17, 2026
59.1%Verified-email coverage
47.3Average contacts per company
11-50Median size (employees)
Oct 17, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
31
51-200
12
201-500
1
501-1,000
2

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 62 companies.

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.
What qualifies
Company records associated with Chicago, United States whose business descriptions match “insurance defense attorney groups” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 1,733 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 October 17, 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.

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 “insurance defense attorney groups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many insurance defense attorney groups are there based in Chicago, United States?

RevenueBase identified 62 company matches for insurance defense attorney groups associated with Chicago, United States as of October 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?

O'hagan Meyer tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most insurance defense attorney groups?

New York leads the United States with 67 company records, followed by Chicago (62) and Miami (42).

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 1,733 professional contacts with verified work emails tracked across these 62 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 October 17, 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 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.