Company lists · Data refreshed September 2026

Top 25 Big 4 law firms based in Pittsburgh, United States

Name: Big 4 law firms based in Pittsburgh, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 42 companies tracked

RevenueBase identified 42 big 4 law firms headquartered in Pittsburgh, United States as of September 2026 and tracks 8,669 professional contacts across them, including 4,178 with verified work emails. Across the United States, New York is the largest hub for this category (536 companies); Pittsburgh has 42.

This list covers big 4 law firms headquartered in Pittsburgh, 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 23, 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 23, 2026 86% judged on-target in blind review

42Companies

8,669Contacts tracked

4,178Verified emails

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The 25 largest big 4 law firms based in Pittsburgh, United States

Ranked by team size

Top 25 of 42 big 4 law firms based in Pittsburgh, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to big 4 law 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	K&l Gates	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	1,001-5,000	4,861 contacts →
	Indirect evidence “At K&L Gates, we foster an inclusive and collaborative environment across our fully integrated global platform that enables us to diligently combine the knowledge and expertise of…” Source: RevenueBase Database · checked Sep 23, 2026
2	Buchanan Ingersoll & Rooney PC	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	501-1,000	1,197 contacts →
	Partial evidence “Buchanan Ingersoll & Rooney is a national law firm with a proven reputation for providing progressive, industry-leading legal, business, regulatory and government relations advice…” Source: RevenueBase Database · checked Sep 23, 2026
3	Eckert Seamans	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	501-1,000	570 contacts →
	Indirect evidence “Eckert Seamans Cherin & Mellott LLC has lawyers in offices throughout the United States, including Harrisburg, Philadelphia, and Pittsburgh, Pennsylvania; Boston, Massachusetts…” Source: RevenueBase Database · checked Sep 23, 2026
4	Dickie, Mccamey & Chilcote	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	201-500	400 contacts →
	Indirect evidence “21 Offices \| 11 States \| 1 Firm Dickie, McCamey & Chilcote, P.C.” Source: RevenueBase Database · checked Sep 23, 2026
5	Burns White LLC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	201-500	310 contacts →
	Indirect evidence “At Burns White LLC, we are committed to representing our clients with excellence.” Source: RevenueBase Database · checked Sep 23, 2026
6	Babst Calland	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	51-200	192 contacts →
	Indirect evidence “As a collaborative and integrated group of attorneys, we work as a unified team, not as sole practitioners.” Source: RevenueBase Database · checked Sep 23, 2026
7	Leech Tishman	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	201-500	190 contacts →
	Indirect evidence “At Leech Tishman, we take pride in providing our tailored services across the country, while also being in your own backyard.” Source: RevenueBase Database · checked Sep 23, 2026
8	Tucker Arensberg, P.C	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	51-200	149 contacts →
	Partial evidence “When you think of your ideal relationship with a law firm, you probably want and need a firm that understands your business, uses the law as a way to help you be more successful…” Source: RevenueBase Database · checked Sep 23, 2026
9	Pietragallo Gordon Alfano Bosick & Raspanti, LLP	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	51-200	131 contacts →
	Indirect evidence “Pietragallo Gordon Alfano Bosick & Raspanti, LLP is a midsize business and litigation firm.” Source: RevenueBase Database · checked Sep 23, 2026
10	Meyer, Unkovic & Scott LLP	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	51-200	111 contacts →
	Partial evidence “Meyer, Unkovic & Scott LLP is a business law firm whose diverse clientele includes Fortune 100 companies, significant financial institutions, small venture enterprises and…” Source: RevenueBase Database · checked Sep 23, 2026
11	Houston Harbaugh, P.C.	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	51-200	84 contacts →
	Partial evidence “Building Client Confidence® Business Law.” Source: RevenueBase Database · checked Sep 23, 2026
12	Sherrard, German & Kelly, P.C	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	51-200	68 contacts →
	Partial evidence “Sherrard, German & Kelly is a Pittsburgh-based mid-size law firm with a long tradition of innovative client legal service that relates back to the 1870s.” Source: RevenueBase Database · checked Sep 23, 2026
13	Metz Lewis Brodman Must O'keefe LLC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	51-200	67 contacts →
	Indirect evidence “We deliver experienced, solutions-driven lawyers across several practice areas and industries.” Source: RevenueBase Database · checked Sep 23, 2026
14	Strassburger Mckenna Gutnick & Gefsky	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	51-200	56 contacts →
	Indirect evidence “From literally writing the book on Pennsylvania Commercial Litigation, to winning landmark cases about unfair trade practices, to pioneering the formation and approvals of charter…” Source: RevenueBase Database · checked Sep 23, 2026
15	Maiello, Brungo & Maiello, LLP	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	11-50	30 contacts →
	Indirect evidence “Whether you need legal counsel for personal or business purposes MBM attorneys will work closely with you to resolve your legal concerns.” Source: RevenueBase Database · checked Sep 23, 2026
16	Williams Coulson Johnson Lloyd Parker & Tedesco, LLC	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	11-50	23 contacts →
	Partial evidence “Williams Coulson Johnson Lloyd Parker & Tedesco, LLC is a Pittsburgh based law firm which provides customized planning services - creatively crafting solutions to the unique…” Source: RevenueBase Database · checked Sep 23, 2026
17	Marcus & Shapira LLP	Partial evidence	Pittsburgh, United StatesHQ checked Sep 23, 2026	11-50	23 contacts →
	Partial evidence “Marcus & Shapira LLP combines the efficiency and economy of a boutique law firm with the diverse practice and specialized expertise of the largest firms in the region.” Source: RevenueBase Database · checked Sep 23, 2026
18	Morella & Associates, A Professional Corporation	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	11-50	20 contacts →
	Indirect evidence “Morella & Associates understands the unique business, estate planning and other legal needs of its clients from a family and business perspective.” Source: RevenueBase Database · checked Sep 23, 2026
19	Sitko Bruno, LLC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “Sitko Bruno provides innovative solutions with an original approach to service.” Source: RevenueBase Database · checked Sep 23, 2026
20	DEL Sole Cavanaugh Stroyd LLC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	11-50	8 contacts →
	Indirect evidence “DEL SOLE CAVANAUGH STROYD LLC provides the highest quality legal services to private and publicly-held businesses, emerging companies and individuals.” Source: RevenueBase Database · checked Sep 23, 2026
21	Rothman Gordon	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	51-200	8 contacts →
	Partial evidence “Rothman Gordon is a Pittsburgh-based law firm that has been advocating its clients' interests since 1954.” Source: RevenueBase Database · checked Sep 23, 2026
22	Block & Associates, LLC	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	1-10	6 contacts →
	Partial evidence “Block & Associates is a full-service law firm dedicated to providing legal services to individuals and businesses.” Source: RevenueBase Database · checked Sep 23, 2026
23	Gtnlaw Gaitens, Tucceri & Nicholas, P.C	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	11-50	6 contacts →
	Indirect evidence “At GTNlaw, we strive to provide our clients with the utmost service and attention.” Source: RevenueBase Database · checked Sep 23, 2026
24	Covelli LAW Offices	Partial evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	1-10	4 contacts →
	Partial evidence “Covelli Law Offices is a Law Practice company located in 357 Regis Ave, Pittsburgh, Pennsylvania, United States.” Source: RevenueBase Database · checked Sep 23, 2026
25	Carothers & Hauswirth LLP	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	11-50	4 contacts →
	Indirect evidence “Carothers & Hauswirth LLP is led by its founding partners, Patrick Carothers and Gregory Hauswirth.” Source: RevenueBase Database · checked Sep 23, 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: big 4 law 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 big 4 law firms.
Partial evidence: Its own public description names part of big 4 law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big 4 law 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 42 big 4 law firms based in Pittsburgh, United States

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Big 4 law firms based in Pittsburgh, United States at a glance

As of Sep 23, 2026

48.2%Verified-email coverage

206.4Average contacts per company

11-50Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Pittsburgh, so it is reported there. Company counts and contact totals on this page are exact for Pittsburgh, over 42 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 big 4 law 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 Pittsburgh, United States whose own description of what they do matches “big 4 law 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 big 4 law 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 big 4 law firms, and records with no verified work email. Companies headquartered outside Pittsburgh 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, 4,178 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 23, 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.

Big 4 law 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 big 4 law 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 big 4 law firms are there based in Pittsburgh, United States?

RevenueBase identified 42 big 4 law firms headquartered in Pittsburgh, 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?

K&l Gates, headquartered in Pittsburgh, tops this list with the largest team on record.

Which city in the United States has the most big 4 law firms?

New York leads the United States with 536 headquartered companies, followed by Chicago (267) and Los Angeles (235). Pittsburgh has 42.

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 4,178 verified decision-maker contacts tracked across these 42 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 23, 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.