Insights

Strong Industry Position Armstrong Teasdale LLP is positioned among the top 200 law firms in the United States with a substantial client base and a long-standing industry presence, indicating opportunities for enterprise-level legal and compliance solutions.

Recognition for Equality The firm’s recent accolade as an Equality 100 Award recipient demonstrates a commitment to diversity and inclusion, suggesting potential partnerships or services related to corporate social responsibility, DEI initiatives, and workplace culture enhancement.

Financial Stability With reported revenues between $100 million and $250 million and a workforce of over 600 employees, the firm shows financial robustness, making it a viable client for legal technology, consulting, or professional service solutions aimed at mid-sized to large organizations.

Global Client Relationships Having served clients worldwide for over 125 years, Armstrong Teasdale’s longstanding international presence opens opportunities for cross-border legal services, technology platforms supporting global compliance, and international expansion consulting.

Embraces Technology & Inclusion The firm’s recognition and participation in industry awards reflect a focus on modern workplace practices and diversity, ideal for presenting solutions in diversity training, legal tech, or employee engagement platforms that align with their values.

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Armstrong Teasdale LLP Tech Stack

Armstrong Teasdale LLP's Email Address Formats

Armstrong Teasdale LLP uses at least 2 format(s):
Armstrong Teasdale LLP Email FormatsExamplePercentage
FLast@armstrongteasdale.comJDoe@armstrongteasdale.com
96%
FirstLast@armstrongteasdale.comJohnDoe@armstrongteasdale.com
2%
Last@armstrongteasdale.comDoe@armstrongteasdale.com
2%
FLast@atllp.comJDoe@atllp.com
94%
Last@atllp.comDoe@atllp.com
4%
FMiddleLast@atllp.comJMichaelDoe@atllp.com
1%
FiLast@atllp.comJoDoe@atllp.com
1%

Frequently Asked Questions

Where is Armstrong Teasdale LLP's headquarters located?

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Armstrong Teasdale LLP's main headquarters is located at 7700 Forsyth Boulevard Suite 1800 St. Louis, Missouri United States. The company has employees across 3 continents, including North AmericaEuropeAsia.

What is Armstrong Teasdale LLP's phone number?

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You can contact Armstrong Teasdale LLP's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Armstrong Teasdale LLP's official website and social media links?

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Armstrong Teasdale LLP's official website is atllp.com and has social profiles on LinkedIn.

What is Armstrong Teasdale LLP's NAICS code?

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Armstrong Teasdale LLP's NAICS code is 54111 - Offices of Lawyers.

How many employees does Armstrong Teasdale LLP have currently?

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As of June 2026, Armstrong Teasdale LLP has approximately 614 employees across 3 continents, including North AmericaEuropeAsia. Key team members include Chief Diversity Officer: K. S.Partner: J. D.Partner: J. S.. Explore Armstrong Teasdale LLP's employee directory with LeadIQ.

What industry does Armstrong Teasdale LLP belong to?

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Armstrong Teasdale LLP operates in the Law Practice industry.

What is Armstrong Teasdale LLP's email format?

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Armstrong Teasdale LLP's email format typically follows the pattern of FLast@armstrongteasdale.com. Find more Armstrong Teasdale LLP email formats with LeadIQ.

When was Armstrong Teasdale LLP founded?

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Armstrong Teasdale LLP was founded in 1901.

Armstrong Teasdale LLP

Law PracticeMissouri, United States501-1000 Employees

Armstrong Teasdale LLP is a law practice headquartered in St. Louis, Missouri, serving clients around the globe. Founded in 1901, the firm has grown to be one of the 200 largest law firms in the United States. With a 125-year history, it has developed long-term relationships with a diverse client base.

The firm operates within the law practice industry and serves both large and small clients across a broad range of matters. In January 2025, Armstrong Teasdale was recognized with an Equality 100 award in the Human Rights Campaign Foundation's Corporate Equality Index.

Section iconCompany Overview

Headquarters
7700 Forsyth Boulevard Suite 1800 St. Louis, Missouri United States
Phone number
Website
atllp.com
NAICS Code
54111 - Offices of Lawyers
Founded
1901
Employees
501-1000

Section iconFunding & Financials

  • $100M$250M

    Armstrong Teasdale LLP's revenue is estimated to be in the range of $100M$250M

Section iconFunding & Financials

  • $100M$250M

    Armstrong Teasdale LLP's revenue is estimated to be in the range of $100M$250M

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