Company lists · Data refreshed September 2026

Top 25 Mergers and acquisitions law firms based in Chicago, United States

Name: Mergers and acquisitions 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 5, 2026 126 companies tracked

RevenueBase identified 126 mergers and acquisitions law firms headquartered in Chicago, United States as of September 2026 and tracks 21,830 professional contacts across them, including 12,642 with verified work emails. New York is the largest hub.

This list covers mergers and acquisitions 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 5, 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 5, 2026 86% judged on-target in blind review

126Companies

21,830Contacts tracked

12,642Verified emails

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The 25 largest mergers and acquisitions law firms based in Chicago, United States

Ranked by team size

Top 25 of 126 mergers and acquisitions law firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names mergers and acquisitions 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 5, 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 5, 2026
2	Mayer BrownPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 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 5, 2026
3	Seyfarth Shaw LLPIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,167
	“High stakes.” Source: company website · checked Sep 5, 2026
4	Katten Muchin Rosenman LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 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 5, 2026
5	Hinshaw & Culbertson LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	501-1,000	1,188
	“Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Source: company website · checked Sep 5, 2026
6	Locke Lord LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	1,001-5,000	830
	“Locke Lord and Troutman Pepper merged on January 1, 2025.” Source: company website · checked Sep 5, 2026
7	Chapman And Cutler LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	201-500	565
	“Chapman is a law firm focused on finance.” Source: company website · checked Sep 5, 2026
8	Levenfeld Pearlstein, LLCPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 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 5, 2026
9	LivingstoneIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	207
	“Livingstone is an international mid-market M&A and debt advisory firm with offices in Amsterdam, Beijing, Chicago, Düsseldorf, Frankfurt, Hamburg, London, Los Angeles, Madrid…” Source: company website · checked Sep 5, 2026
10	CDI Global M&aIndirect evidence	Chicago, United StatesHQ checked Sep 5, 2026	51-200	118
	“CDI Global, established in 1973, is a leader in middle-market, cross-border transactions with over transactions to our credit.” Source: company website · checked Sep 5, 2026
11	Masuda FunaiIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 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 5, 2026
12	Patzik Frank And Samotny LTDPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 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 5, 2026
13	Latimer Levay Fyock LLCIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 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 5, 2026
14	Schoenberg Finkel Beederman Bell Glazer LLCPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	49
	“What makes SFBBG different from other law firms?” Source: company website · checked Sep 5, 2026
15	Mestel & CompanyIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	39
	“Elevate Mestel is a global leader in legal recruitment and M&A consulting.” Source: company website · checked Sep 5, 2026
16	Nisen & Elliott, LLCIndirect evidence	Chicago, United StatesHQ checked Sep 5, 2026	11-50	35
	Source: company website · checked Sep 5, 2026
17	HMB Legal CounselIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	35
	“On March 1, 2024, HMB Legal Counsel joined forces Kilpatrick Townsend & Stockton LLP.” Source: company website · checked Sep 5, 2026
18	Shefsky & FroelichPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	33
	“Shefsky & Froelich Ltd, a Chicago-based full-service law firm, was founded in 1970 by a small group of highly motivated attorneys with extensive experience in complex commercial…” Source: company website · checked Sep 5, 2026
19	Litwin Kach LLPStrong evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	11-50	31
	“Litwin Kach is a boutique law firm providing sophisticated legal services in the areas of private equity, mergers and acquisitions, energy development, venture capital, commercial…” Source: company website · checked Sep 5, 2026
20	Hogan Marren Babbo & Rose, LTDPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	11-50	28
	“Founded in 1993 by several attorneys previously affiliated with a large Chicago law firm, Hogan Marren, Ltd.” Source: company website · checked Sep 5, 2026
21	Cook M&a Advisory ServicesIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	11-50	27
	“Cook M&A is recognized as one of the leading buy side M&A advisory firms in the industry.” Source: company website · checked Sep 5, 2026
22	Shepard Schwartz & Harris LLPIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	1-10	26
	“As of July 2022, Shepard Schwartz & Harris LLP joined Citrin Cooperman.” Source: company website · checked Sep 5, 2026
23	Elrod Friedman LLPIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	11-50	22
	“Bridging the Gap between Public & Private Sectors In representing public and private sector clients, our attorneys provide unique legal insights and understandings that result in…” Source: company website · checked Sep 5, 2026
24	Gozdecki, DEL Giudice, Americus & Brocato LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	11-50	22
	“Gozdecki, Del Giudice, Americus, Farkas & Brocato LLP ("GDAFB") is a full service business law firm which offers outstanding legal advice and representation to large and small…” Source: company website · checked Sep 5, 2026
25	Harris Winick Harris LLPPartial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	11-50	18
	“Harris Winick Harris LLP is a boutique commercial law firm formed by a core group of talented attorneys with over 100 years of collective experience representing clients locally…” Source: company website · checked Sep 5, 2026

Showing 25 of 126 mergers and acquisitions law firms based in Chicago, United States

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Mergers and acquisitions law firms based in Chicago, United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

New YorkLargest hub · 325 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 126 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 mergers and acquisitions 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 “mergers and acquisitions 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 mergers and acquisitions 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, 12,642 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 5, 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.

Mergers and acquisitions law firms by metro in the United States

Frequently asked

How many mergers and acquisitions law firms are there based in Chicago, United States?

RevenueBase identified 126 mergers and acquisitions 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 mergers and acquisitions law firms?

New York leads with 325 headquartered companies, followed by Chicago (126) and Los Angeles (112).

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 12,642 verified decision-maker contacts tracked across these 126 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 5, 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.