What departments does O'Brien Firm have?

O'Brien Firm has employees across 2 departments including Administrative, Legal.

What is the largest department at O'Brien Firm?

The largest department at O'Brien Firm is Legal with 3 employees.

Where are O'Brien Firm employees located globally?

O'Brien Firm has employees across 1 continents and 1 countries including United States Of America.

How has O'Brien Firm's team size changed over time?

O'Brien Firm's team has remained stable from approximately 5 to 5 employees based on available data.

O'Brien Firm Employee Directory

Law PracticePennsylvania, United States2-10 Employees

The O’Brien Firm is a small law practice based in Philadelphia, serving clients nationwide with customized civil litigation services. It acts as National Coordinating and Regional Trial Counsel for several clients in asbestos litigation, with an emphasis on strategic, thoughtful, and cost-conscious representation from high-level planning through daily case management. The firm represents Fortune 500 companies, local corporations, insurers, small businesses, and individuals in matters in the state and federal courts of Pennsylvania, New Jersey, and Delaware.

Its strength lies in its attorneys, staff, and litigation support, underpinned by long-standing client relationships and a broad network of defense counsel across the country. The firm positions itself to handle a wide range of civil litigation in the Pennsylvania, New Jersey, and Delaware courts.

O'Brien Firm Global Highlights

North America
10

United States Of America
10

O'Brien Firm's Leadership

M. O.
Partner
Mobile Phone
Email
W. O.
Partner
Mobile Phone
Email
W. O.
Owner
Mobile Phone
Email
A. H.
Office Manager
Mobile Phone
Email
J. S.
Legal Assistant
Mobile Phone
Email
C. L.
Paralegal
Mobile Phone
Email
D. B.
Regional Counsel
Mobile Phone
Email
S. A.
Billing Administrator
Mobile Phone
Email

O'Brien Firm Employee Metrics

100%

50%

0%

2026

2025

Legal
Accounting
Administrative
Analytics
Arts & Design
Other

Contact profiles from O'Brien Firm

Name

Title

Contact Info

Location

Last Update

M. O.
Partner
Mobile Phone
Email
United StatesPennsylvania
Jul 01, 2026
W. O.
Partner
Mobile Phone
Email
United StatesMississippi
Apr 15, 2026
W. O.
Owner
Mobile Phone
Email
United StatesPennsylvania
Jun 26, 2026
A. H.
Office Manager
Mobile Phone
Email
United StatesPennsylvania
Oct 21, 2024
J. S.
Legal Assistant
Mobile Phone
Email
United StatesPennsylvania
Jun 26, 2026
C. L.
Paralegal
Mobile Phone
Email
Oct 16, 2024
D. B.
Regional Counsel
Mobile Phone
Email
Oct 23, 2024
S. A.
Billing Administrator
Mobile Phone
Email
United StatesPennsylvania
Jul 08, 2025
T. C.
Attorney
Mobile Phone
Email
Oct 17, 2024

Frequently Asked Questions

What is O'Brien Firm known for?

O'Brien Firm was founded in 2014 operates in the Law Practice industry. The company's main headquarters is located in 325 Constitution Place Suite 1320 Philadelphia, Pennsylvania 19106 United States. Explore O'Brien Firm's company overview page for more information.

What is O'Brien Firm's most common email format?

O'Brien Firm employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more O'Brien Firm email formats with LeadIQ.

How many employees does O'Brien Firm have currently?

O'Brien Firm has approximately 5 employees as of May 2026. These team members are located across 1 continents, including North America.

Who are O'Brien Firm's key employees and leadership?

As of May 2026, O'Brien Firm's key employees include:

Partner: M. O.
Partner: W. O.
Owner: W. O.
Office Manager: A. H.
Legal Assistant: J. S.

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O'Brien Firm Employee Directory

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