Insights

Global specialty Atrium operates as a Lloyd's syndicate with a diversified Property, Casualty, and Specialty portfolio, presenting cross-sell opportunities across multi-line, global reinsurance and direct insurance clients seeking complex coverage and capacity.

Stable profitability As a top-performing Lloyd’s Syndicate with high profitability and low volatility, Atrium can position itself as a reliable capacity partner to mid-market and large brokers seeking consistency and reduced risk in placement decisions.

Strategic partnerships Existing collaboration signals with global players and a track record of value creation suggest potential for expanded partnerships with brokers and carriers looking to augment their specialty and reinsurance offerings with Atrium’s diversified book.

Technology adoption Utilization of modern tech staples such as WordPress, JSON-LD, DocuSign and collaboration tools indicates readiness to engage in digital quoting, streamlined policy administration, and efficient renewal workflows for broker and client portals.

Growth readiness Atrium’s growth trajectory in recent years, combined with substantial revenue scale and a broad syndicate footprint, presents cross-sell opportunities to brokers handling large accounts in need of capacity, specialized risk transfer, and customized coverage solutions.

Atrium Tech Stack

Atrium uses 8 technology products and services including WordPress, JSON-LD, FancyBox, and more. Explore Atrium's tech stack below.

  • WordPress
    Content Management System
  • JSON-LD
    Javascript Frameworks
  • FancyBox
    Javascript Libraries
  • DocuSign
    Miscellaneous
  • X-XSS-Protection
    Security
  • Microsoft Teams
    Team Collaboration
  • Tailwind CSS
    UI Frameworks
  • Apache HTTP Server
    Web Servers

Media & News

Atrium's Email Address Formats

Atrium uses at least 1 format(s):
Atrium Email FormatsExamplePercentage
First.Last@atrium-uw.comJohn.Doe@atrium-uw.com
85%
First.Middle@atrium-uw.comJohn.Michael@atrium-uw.com
8%
Last@atrium-uw.comDoe@atrium-uw.com
7%

Frequently Asked Questions

What is Atrium's phone number?

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You can contact Atrium'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 Atrium's stock symbol?

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Atrium is a publicly traded company; the company's stock symbol is RNA.

What is Atrium's official website and social media links?

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Atrium's official website is atrium-uw.com and has social profiles on LinkedIn.

What is Atrium's NAICS code?

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Atrium's NAICS code is 524 - Insurance Carriers and Related Activities.

How many employees does Atrium have currently?

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As of July 2026, Atrium has approximately 258 employees across 3 continents, including EuropeNorth AmericaAsia. Key team members include Chief Strategy Officer (cso): H. M.Chief Operating Officer: J. T. F.Chief Risk Officer: S. S.. Explore Atrium's employee directory with LeadIQ.

What industry does Atrium belong to?

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Atrium operates in the Insurance industry.

What technology does Atrium use?

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Atrium's tech stack includes WordPressJSON-LDFancyBoxDocuSignX-XSS-ProtectionMicrosoft TeamsTailwind CSSApache HTTP Server.

What is Atrium's email format?

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Atrium's email format typically follows the pattern of First.Last@atrium-uw.com. Find more Atrium email formats with LeadIQ.

When was Atrium founded?

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Atrium was founded in 1932.
Atrium logo

Atrium

InsuranceEngland, United Kingdom201-500 Employees

Atrium is a London-based insurance and reinsurance group operating at Lloyd's, the world's specialist insurance market. With a history dating back to the 1930s, the company provides risk protection to clients around the world. It has been ranked among Lloyd’s Syndicates with high profitability and low volatility over the past decade, achieving substantial growth and generating value for the Group. Syndicate 609 and Syndicate 2026 manage a diversified portfolio across Property, Casualty, and Specialty lines. The company is located at 8 Bishopsgate Level, London, England EC2N 4BQ, United Kingdom and employs approximately 201-500 people. More information is available on the company website at https://atrium-uw.com.

Section iconCompany Overview

Phone number
Stock Symbol
RNA
NAICS Code
524 - Insurance Carriers and Related Activities
Founded
1932
Employees
201-500

Section iconFunding & Financials

  • $100M$250M

    Atrium's revenue is estimated to be in the range of $100M$250M

Section iconFunding & Financials

  • $100M$250M

    Atrium's revenue is estimated to be in the range of $100M$250M

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