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What Does Expel Do?

Total employees520
HeadquartersHerndon
Founded2016

Expel is a leading managed detection and response (MDR) provider, offering 24/7 cybersecurity services to help organizations minimize business risk. Their approach combines advanced technology with human expertise to rapidly detect, understand, and remediate security threats across cloud, on-premises, and SaaS environments. Expel aims to make security easy to understand, use, and continuously improve, acting as a transparent extension of their clients' security teams.

Where Is Expel's Headquarters?

Expel officeExpel officeExpel officeExpel office
*Images sourced via web search. Rights belong to original owners

HQ Function

Serves as the central hub for Expel's operations, including its primary Security Operations Center (SOC), research and development, engineering, sales, marketing, and corporate administration.

Notable Features:

Expel’s Herndon office is designed with a focus on transparency and collaboration, featuring open workspaces, numerous meeting and breakout rooms, a dedicated training center, and advanced facilities for its 24/7 Security Operations Center (SOC). The environment is tailored to support its 'Expletive' work culture and agile operations.

Work Culture:

Expel is known for its transparent, employee-focused, and collaborative work culture, often referred to as the 'Expletive' culture. They emphasize continuous learning, empowerment, psychological safety, and a 'no-blame' approach to incident response. The HQ environment reflects this with open layouts and spaces designed for teamwork and well-being.

HQ Significance:

The Herndon headquarters is critical as the nerve center for Expel's global security operations, product development, and strategic decision-making. It embodies the company's commitment to innovation and its unique approach to cybersecurity services.

Values Reflected in HQ: The headquarters design and atmosphere reflect Expel's core values of transparency, collaboration, customer-centricity, pragmatism ('security that makes sense'), and empowering its employees.

Location:

Expel provides its managed detection and response (MDR) services to customers globally. While headquartered in Herndon, Virginia, and with a key office in London, UK, for EMEA operations, Expel supports its international client base through its 24/7 Security Operations Centers (SOCs) and a significant distributed workforce across North America, the UK, and other regions. This model allows for continuous security monitoring and rapid response regardless of customer location.

Street Address:

12950 Worldgate Dr, Suite 500

City:

Herndon

State/Province:

VA

Country:

USA

Where Else Does Expel Operate Around the World?

London, United Kingdom

Address: c/o Cubiks (UK) Ltd, The Leather Market, Unit 10.G.03, 11/13 Weston Street, London, SE1 3ER

To provide localized support and services to Expel's growing customer base in the EMEA region and to spearhead regional business development and partnership efforts.

Buying Intent Signals for Expel

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Expel? Meet the Executive Team

As of April 2025, Expel' leadership includes:

Dave Merkel - Chief Executive Officer & Co-founder
Yanek Korff - Chief Operating Officer & Co-founder
Peter Silberman - Chief Technology Officer
Jennifer Rudder - Chief Financial Officer
Kelly Fiedler - Chief Marketing Officer
Rick Hasselman - Chief Revenue Officer
Amy Rossi - Chief People Officer
Bruce Potter - Chief Information Security Officer
Matt Peters - Chief Product Officer

Who's Investing in Expel?

Expel has been backed by several prominent investors over the years, including:

CapitalG
Paladin Capital Group
Scale Venture Partners
Index Ventures
Battery Ventures
Greycroft
GGV Capital
Adams Street Partners
Kleiner Perkins

What Leadership Changes Has Expel Seen Recently?

Hire1
Exits1

In the past 12 months (from mid-2023 to mid-2024), Expel's key executive change involved the appointment of Peter Silberman as Chief Technology Officer. The broader executive leadership team has maintained stability, focusing on continued growth and service expansion.

Departures

Justin Bajko, Justin Bajko transitioned from the role of Chief Technology Officer to Co-Founder & Advisor, remaining with the company.

New Appointments:

Peter Silberman, Peter Silberman was appointed as Chief Technology Officer. He previously served as Expel's VP of Engineering.

What Technology (Tech Stack) Is Used byExpel?

Discover the tools Expel uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Expel Email Formats and Examples

Expel commonly uses professional email formats for its employees. The most frequently observed patterns are [first].[last]@expel.com and [first_initial][last]@expel.com. These formats are typical for companies in the technology and cybersecurity sectors.

[first].[last]@expel.com or [first_initial][last]@expel.com

Format

jane.doe@expel.com or jdoe@expel.com

Example

90%

Success rate

What's the Latest News About Expel?

MSSP AlertMay 15, 2024

Expel MDR Achieves FedRAMP High Authorization

Expel announced that its Managed Detection and Response (MDR) platform has achieved FedRAMP High authorization. This certification allows Expel to provide its advanced security services to U.S. federal government agencies that require the highest level of cloud security standards....more

Business Wire (Expel Press Release)March 12, 2024

Expel Named a Leader in The Forrester Wave™: Managed Detection And Response, Q1 2024

Expel was recognized as a Leader in The Forrester Wave™: Managed Detection And Response, Q1 2024 report. The independent research firm's report highlighted Expel's strong current offering, strategy, and market presence in the MDR space, citing its transparent and customer-centric approach....more

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