Insights

Mesothelioma Focus Strong specialization in mesothelioma and asbestos disease with a long track record in investigation, prosecution, and resolution of related cases, indicating a reliable client base for asbestos-related legal services and potential cross-sell of related practice areas.

Expansion Opportunities Recent diversification into sexual abuse, criminal injury, serious injury, and wrongful death suggests openness to growth and cross-practice collaboration; target insurers, defense firms, and platforms that handle complex injury matters for partnerships or referral arrangements.

Missouri Presence Historical influence in Missouri with laws expanding workers’ compensation benefits for mesothelioma or asbestosis patients; potential sales angle to state-level employers, unions, and workers’ compensation carriers seeking specialized representation.

Financial Scale Estimated annual revenue in the $100M–$250M range and a headcount of 51–200 positions the firm as a sizable partner for enterprise services, marketing collaborations, and technology solutions tailored to mid to large legal practices.

Tech & Marketing Uses a blended tech stack (iCIMS, WordPress, Office 365, WP Engine, analytics tools) and multimedia channels (Vimeo, YouTube); opportunities exist for enhanced intake automation, content marketing support, and client experience improvements via scalable legal tech and digital marketing services.

Similar companies to O'Brien Law Firm

O'Brien Law Firm Tech Stack

O'Brien Law Firm uses 8 technology products and services including iCIMS, Open Graph, WordPress, and more. Explore O'Brien Law Firm's tech stack below.

O'Brien Law Firm's Email Address Formats

O'Brien Law Firm uses at least 3 email formats:
O'Brien Law Firm Email FormatsExamplePercentage
Last@obrienlawfirm.comDoe@obrienlawfirm.com
63%
FLast@obrienlawfirm.comJDoe@obrienlawfirm.com
35%
First@obrienlawfirm.comJohn@obrienlawfirm.com
2%

Frequently Asked Questions

What is O'Brien Law Firm's official website and social media links?

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O'Brien Law Firm's official website is obrienlawfirm.com and has social profiles on LinkedIn.

How much revenue does O'Brien Law Firm generate?

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As of August 2026, O'Brien Law Firm's annual revenue is estimated to be $100M - $250M.

What is O'Brien Law Firm's SIC code and NAICS code?

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O'Brien Law Firm's SIC code is 8111 - Legal Services and NAICS code is 5411 - Legal Services.

How many employees does O'Brien Law Firm have currently?

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As of August 2026, O'Brien Law Firm has approximately 71 employees across 1 continents, including North America. Key team members include Owner And Litigation Attorney: C. O., Principal Lawyer: T. O. and Paralegal: A. R. Explore O'Brien Law Firm's employee directory with LeadIQ.

What industry does O'Brien Law Firm belong to?

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O'Brien Law Firm operates in the Legal Services industry.

What technology does O'Brien Law Firm use?

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O'Brien Law Firm's tech stack includes iCIMS, Open Graph, WordPress, Office 365, WP Engine, Vimeo, YouTube and Piwik PRO Core.

What is O'Brien Law Firm's email format?

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O'Brien Law Firm's email format typically follows the pattern of Last@obrienlawfirm.com. Find more O'Brien Law Firm email formats with LeadIQ.

When was O'Brien Law Firm founded?

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O'Brien Law Firm was founded in 2000.
O'Brien Law Firm logo

O'Brien Law Firm

Legal ServicesMissouri, United States51-200 Employees

O’Brien Law Firm, a Missouri-based law practice established in 2000, focuses on representing individuals affected by mesothelioma and asbestos-related diseases. The firm has built its practice around investigating, prosecuting, and resolving asbestos civil cases and bankruptcy trust claims, while fostering ethical and compassionate client relationships. Located in St. Louis, the firm has positioned itself as a leading practitioner in asbestos-focused litigation in the Midwest and has expanded its expertise to include workers’ compensation claims for Missouri employees diagnosed with mesothelioma or asbestosis following legislative changes in 2013. In 2020, the firm broadened its practice to handle sexual abuse, criminal injury, serious injury, and wrongful death cases, continuing its work on behalf of clients harmed by the misconduct of others.

Section iconCompany Overview

SIC Code
8111 - Legal Services
NAICS Code
5411 - Legal Services
Founded
2000
Employees
51-200

Section iconFunding & Financials

  • $100M - $250M

    O'Brien Law Firm's revenue is estimated to be in the range of $100M - $250M

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