Insights

Global Legal Presence Simpson Thacher & Bartlett LLP operates across multiple major financial and legal hubs worldwide, including New York, London, Hong Kong, and Tokyo, presenting opportunities to offer international legal technology solutions and cross-border compliance services tailored to their global operations.

Technological Adoption The firm utilizes a diverse tech stack including cloud platforms, data security, and legal-specific software, indicating a readiness to engage with innovative legal tech solutions that enhance efficiency, security, and client service delivery.

Strong Financial Range With revenues estimated between $100 million and $1 billion, Simpson Thacher demonstrates significant financial stability, making them a potential high-value client for premium legal service providers, consultancy firms, and legal technology vendors seeking strategic partnerships.

Active Industry Engagement Recent collaborations with legal volunteer organizations and notable personnel moves highlight the firm’s focus on community engagement and talent acquisition, which could open avenues for HR tech, knowledge management systems, and employee engagement solutions.

Legal Expertise & Innovation The firm’s specialization in complex financial and regulatory matters offers opportunities to introduce advanced legal analytics, compliance monitoring tools, or industry-specific AI solutions aimed at optimizing their legal strategies and maintaining their competitive edge.

Simpson Thacher & Bartlett LLP Tech Stack

Simpson Thacher & Bartlett LLP uses 8 technology products and services including GDPR, CCPA, SAP, and more. Explore Simpson Thacher & Bartlett LLP's tech stack below.

  • GDPR
    Certificates
  • CCPA
    Certificates
  • SAP
    Customer Relationship Management
  • Azure SQL
    Database
  • iManage Work
    Document Management Systems
  • ServiceNow
    Miscellaneous
  • Python
    Programming Languages
  • Gallagher
    Risk And Compliance

Simpson Thacher & Bartlett LLP's Email Address Formats

Simpson Thacher & Bartlett LLP uses at least 2 format(s):
Simpson Thacher & Bartlett LLP Email FormatsExamplePercentage
First.Last@stblaw.comJohn.Doe@stblaw.com
52%
FLast@stblaw.comJDoe@stblaw.com
41%
F_Last@stblaw.comJ_Doe@stblaw.com
3%
Last@stblaw.comDoe@stblaw.com
1%
F.Last@stblaw.comJ.Doe@stblaw.com
1%
Last.First@stblaw.comDoe.John@stblaw.com
1%
First.L@stblaw.comJohn.D@stblaw.com
1%
First.Last@simpsonthacher.comJohn.Doe@simpsonthacher.com
78%
First_Last@simpsonthacher.comJohn_Doe@simpsonthacher.com
11%
First@simpsonthacher.comJohn@simpsonthacher.com
6%
FLast@simpsonthacher.comJDoe@simpsonthacher.com
5%

Frequently Asked Questions

Where is Simpson Thacher & Bartlett LLP's headquarters located?

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Simpson Thacher & Bartlett LLP's main headquarters is located at 425 Lexington Avenue, New York, NY 10017, US. The company has employees across 5 continents, including North AmericaEuropeAsia.

What is Simpson Thacher & Bartlett LLP's phone number?

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You can contact Simpson Thacher & Bartlett 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 Simpson Thacher & Bartlett LLP's official website and social media links?

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Simpson Thacher & Bartlett LLP's official website is simpsonthacher.com and has social profiles on LinkedIn.

What is Simpson Thacher & Bartlett LLP's SIC code NAICS code?

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Simpson Thacher & Bartlett LLP's SIC code is 8641 - Civic, Social, and Fraternal Associations NAICS code is 54111 - Offices of Lawyers.

How many employees does Simpson Thacher & Bartlett LLP have currently?

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As of October 2025, Simpson Thacher & Bartlett LLP has approximately 3.3K employees across 5 continents, including North AmericaEuropeAsia. Key team members include Chief Executive Officer: G. A.Chief Client Officer: L. G.Chief Operating Officer, Emea: B. J.. Explore Simpson Thacher & Bartlett LLP's employee directory with LeadIQ.

What industry does Simpson Thacher & Bartlett LLP belong to?

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Simpson Thacher & Bartlett LLP operates in the Law Practice industry.

What technology does Simpson Thacher & Bartlett LLP use?

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Simpson Thacher & Bartlett LLP's tech stack includes GDPRCCPASAPAzure SQLiManage WorkServiceNowPythonGallagher.

What is Simpson Thacher & Bartlett LLP's email format?

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Simpson Thacher & Bartlett LLP's email format typically follows the pattern of First.Last@stblaw.com. Find more Simpson Thacher & Bartlett LLP email formats with LeadIQ.

When was Simpson Thacher & Bartlett LLP founded?

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Simpson Thacher & Bartlett LLP was founded in 1884.
Simpson Thacher & Bartlett LLP

Simpson Thacher & Bartlett LLP

Law PracticeUnited States1001-5000 Employees

Simpson Thacher & Bartlett LLP is one of the world’s leading international law firms. The Firm was established in 1884 and has approximately 1,500 lawyers. Headquartered in New York with offices in Beijing, Boston, Brussels, Hong Kong, Houston, London, Los Angeles, Luxembourg, Palo Alto, São Paulo, Tokyo and Washington, D.C., the Firm provides coordinated legal advice and transactional capability to clients around the globe.




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Section iconCompany Overview

Headquarters
425 Lexington Avenue, New York, NY 10017, US
Phone number
SIC Code
8641 - Civic, Social, and Fraternal Associations
NAICS Code
54111 - Offices of Lawyers
Founded
1884
Employees
1001-5000

Section iconFunding & Financials

  • $1B$10B

    Simpson Thacher & Bartlett LLP's revenue is estimated to be in the range of $1B$10B

Section iconFunding & Financials

  • $1B$10B

    Simpson Thacher & Bartlett LLP's revenue is estimated to be in the range of $1B$10B

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