Company lists · Data refreshed September 2026

Top 25 Securities law firms based in Chicago, United States

Name: Securities law firms based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 186 companies tracked

RevenueBase identified 186 securities law firms headquartered in Chicago, United States as of September 2026 and tracks 21,143 professional contacts across them, including 12,878 with verified work emails. New York is the largest hub.

This list covers securities law firms headquartered in Chicago, 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 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 HQ checked on every row Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review

186Companies

21,143Contacts tracked

12,878Verified emails

Explore all 186 companies → Free signup · no credit card · 500 free credits

The 25 largest securities law firms based in Chicago, United States

Ranked by team size

Top 25 of 186 securities law firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names securities law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Kirkland & EllisPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	5,001-10,000	8,449
	“As one of the world’s leading law firms, we serve a broad range of clients with market-leading practices in private equity, M&A and other complex corporate transactions…” Source: company website · checked Sep 6, 2026
2	Mayer BrownPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	1,001-5,000	4,177
	“Mayer Brown is a leading international law firm, positioned to represent the world’s major corporations, funds and financial institutions in their most important and complex…” Source: company website · checked Sep 6, 2026
3	Katten Muchin Rosenman LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,495
	“Katten is a full-service law firm with nearly 650 attorneys in locations across the United States and in London and Shanghai.” Source: company website · checked Sep 6, 2026
4	Hinshaw & Culbertson LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	501-1,000	1,188
	“Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Source: company website · checked Sep 6, 2026
5	O'hagan MeyerPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	501-1,000	579
	“As a national law firm defending corporations, non-profits, associations and their officers & directors in every manner of litigation, O'Hagan Meyer provides individualized…” Source: company website · checked Sep 6, 2026
6	Chapman And Cutler LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	565
	“Chapman is a law firm focused on finance.” Source: company website · checked Sep 6, 2026
7	Amundsen Davis, LLCPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	542
	“Amundsen Davis is a law firm comprised of over 250 attorneys headquartered in Chicago.” Source: company website · checked Sep 6, 2026
8	Neal, Gerber & Eisenberg LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	201-500	353
	“Neal Gerber Eisenberg is a Chicago-based law firm whose attorneys share a culture of teamwork and devotion to personalized client service to advance our clients’ business…” Source: company website · checked Sep 6, 2026
9	Levenfeld Pearlstein, LLCPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	254
	“Formed in Levenfeld Pearlstein provides the sophisticated skills and resources of a big law firm with the personal attention of a small law firm.” Source: company website · checked Sep 6, 2026
10	Much Shelist, P.CIndirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	203
	“We're Much.” Source: company website · checked Sep 6, 2026
11	Goldberg Kohn LTDIndirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	182
	Source: company website · checked Sep 6, 2026
12	Bartlit Beck LLPIndirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	130
	“Delivering extraordinary results to leading companies and individuals in their most important matters.” Source: company website · checked Sep 6, 2026
13	Burke, Warren, Mackay & SerritellaIndirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	129
	“Burke, Warren, MacKay & Serritella, P.C.” Source: company website · checked Sep 6, 2026
14	Gould & Ratner LLPIndirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	127
	“For more than 80 years, Gould & Ratner LLP has provided comprehensive legal counsel and business advice to Fortune 500 corporations, closely-held businesses, financial…” Source: company website · checked Sep 6, 2026
15	Masuda FunaiIndirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	102
	“Since its founding in 1929, Masuda Funai has focused its practice on successfully representing international and domestic companies entering, operating and expanding in the United…” Source: company website · checked Sep 6, 2026
16	Aronberg GoldgehnPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	75
	“Aronberg Goldgehn is a premier full-service business law and litigation firm with offices in Chicago and Wheaton, Illinois.” Source: company website · checked Sep 6, 2026
17	Downey & Lenkov LLCPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	68
	“Downey & Lenkov LLC was founded in 2001 by professionals from large Chicago law firms who are committed to providing world-class service but prefer a mid-sized firm setting.” Source: company website · checked Sep 6, 2026
18	Golan Christie Taglia LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	61
	“Golan Christie Taglia LLP is a law firm dedicated to delivering successful results while providing our clients the highest levels of quality and personal service.” Source: company website · checked Sep 6, 2026
19	Patzik Frank And Samotny LTDPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	11-50	54
	“PFS is a law firm that serves a diverse group of clients in a wide variety of business and commercial matters.” Source: company website · checked Sep 6, 2026
20	Latimer Levay Fyock LLCIndirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	11-50	54
	“Latimer LeVay Fyock LLC aim is to deliver sound legal advice to our clients within the specific context of their respective business and personal objectives.” Source: company website · checked Sep 6, 2026
21	Christensen HSU Sipes LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	11-50	53
	“Christensen Hsu Sipes LLP is a law firm with offices in Chicago, Northwest Indiana, Los Angeles, and Sacramento.” Source: company website · checked Sep 6, 2026
22	Schoenberg Finkel Beederman Bell Glazer LLCPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	49
	“What makes SFBBG different from other law firms?” Source: company website · checked Sep 6, 2026
23	Pedersen & HouptIndirect evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	51-200	46
	“Our firm, Pedersen & Houpt, was founded over 50 years ago.” Source: company website · checked Sep 6, 2026
24	Kluever LAW Group, LLCPartial evidence	Chicago, IL, United StatesHQ checked Sep 6, 2026	11-50	43
	“Kluever Law Group, LLC (KLG) is a ten attorney firm boasting a strong record of success representing a core client base of banks, financial institutions, receivers, secured…” Source: company website · checked Sep 6, 2026
25	Sperling & Slater, LLCIndirect evidence	Chicago, United StatesHQ checked Sep 6, 2026	11-50	36
	“Sperling & Slater has a nationwide and international practice focusing on complex commercial and business disputes.” Source: company website · checked Sep 6, 2026

Showing 25 of 186 securities law firms based in Chicago, United States

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Securities law firms based in Chicago, United States at a glance

As of Sep 6, 2026

1-10Median size (employees)

New YorkLargest hub · 461 HQs

Contacts with mobile numbers

Sep 6, 2026Data refreshed

Companies by employee count

1-10

106

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 186 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 securities law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Chicago, United States whose own description of what they do matches “securities law firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among securities law firms, and records with no verified work email. Companies headquartered outside Chicago 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 an evidence 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, 12,878 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 6, 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.

Securities law firms by metro in the United States

Frequently asked

How many securities law firms are there based in Chicago, United States?

RevenueBase identified 186 securities law firms headquartered in Chicago, 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?

Kirkland & Ellis, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most securities law firms?

New York leads with 461 headquartered companies, followed by Chicago (186) and Los Angeles (152).

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 12,878 verified decision-maker contacts tracked across these 186 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 6, 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.