Insights

Customer base Atrium serves startups through a technology platform and a network of expert providers in legal, fundraising, HR & culture, and hiring, indicating opportunities to upsell cross-functional services to growth-stage companies seeking end-to-end advisory.

Funding momentum Backed by top VC firms and already trusted by over 400 startups, Atrium demonstrates strong market validation and a potential to engage portfolio companies of Andreessen Horowitz, Y Combinator, and General Catalyst for expanded services.

Enterprise readiness A scalable technology stack (AWS, Docker, PostgreSQL, Redis) and a platform approach suggest aptitude for onboarding mid-sized startup teams seeking efficient, integrated professional services with predictable delivery.

Expansion signals Recent high-profile PR around fundraising, IND-related milestones, and leadership-inducement grants signal growth, potential for introductions to parallel markets such as healthtech or other regulated sectors that require compliant operations and fast scaling.

Revenue leverage Current revenue range and multi-service offering present opportunities to pitch bundled packages (legal, HR, finance, fundraising) to accelerate startup growth, as well as cross-sell to portfolio companies in stages of fundraising and hiring surges.

Similar companies to Atrium

Atrium Tech Stack

Atrium uses 8 technology products and services including Amazon Web Services, Docker, WordPress, and more. Explore Atrium's tech stack below.

Media & News

Atrium's Email Address Formats

Atrium uses at least 4 email formats:
Atrium Email FormatsExamplePercentage
First.Last@atrium.coJohn.Doe@atrium.co
80%
FLast@atrium.coJDoe@atrium.co
10%
First@atrium.coJohn@atrium.co
6%
Last.F@atrium.coDoe.J@atrium.co
4%

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.co and has social profiles on LinkedIn and Crunchbase.

How much revenue does Atrium generate?

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As of September 2026, Atrium's annual revenue is estimated to be $10M - $25M.

What is Atrium's NAICS code?

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Atrium's NAICS code is 5112 - Software Publishers.

How many employees does Atrium have currently?

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As of September 2026, Atrium has approximately 35 employees across 5 continents, including North America, Europe and South America. Key team members include Emergency Room Nurse: D. P. Explore Atrium's employee directory with LeadIQ.

What industry does Atrium belong to?

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Atrium operates in the Software Development industry.

What technology does Atrium use?

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Atrium's tech stack includes Amazon Web Services, Docker, WordPress, PostgreSQL, Redis, Pardot, Marketo and Microsoft Office.

What is Atrium's email format?

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

How much funding has Atrium raised to date?

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As of September 2026, Atrium has raised $76M in funding. The last funding round occurred on Sep 10, 2018 for $65M.

When was Atrium founded?

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Atrium was founded in 2017.
Atrium logo

Atrium

Software DevelopmentCalifornia, United States11-50 Employees

Atrium is a software development company based in San Francisco, California, that provides a technology platform and a network of expert providers to support startups. It aims to accelerate startup growth by offering advisory services in areas such as legal, fundraising, HR and culture, and hiring, helping founders focus on core strengths. Co-founded in 2017 by Justin Kan, Atrium has backing from prominent investors including Andreessen Horowitz, Y Combinator, and General Catalyst, among others. The company serves more than 400 startups and employs between 11 and 50 people. Its technology stack includes WordPress, React, jQuery UI, Pardot, Google Tag Manager, Bootstrap, Google Analytics, and HTML5.

Section iconCompany Overview

Phone number
Website
atrium.co
Stock Symbol
RNA
NAICS Code
5112 - Software Publishers
Founded
2017
Employees
11-50

Section iconFunding & Financials

  • $76M

    Atrium has raised a total of $76M of funding over 5 rounds. Their latest funding round was raised on Sep 10, 2018 in the amount of $65M as a Series B.

  • $10M - $25M

    Atrium's revenue is estimated to be in the range of $10M - $25M

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