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Expel's Overview

Total employees520
HeadquartersHerndon
Founded2016

Expel is a prominent cybersecurity company specializing in Managed Detection and Response (MDR). Founded in 2016, Expel aims to make security accessible and effective for organizations of all sizes. They offer 24/7 monitoring, threat detection, incident response, and threat hunting services across cloud, hybrid, and on-premises environments. Expel differentiates itself through transparency, its technology platform (Expel Workbench™), and a focus on integrating seamlessly with existing security tools and teams. Their approach combines advanced technology with human expertise to provide rapid detection and tailored responses to security threats, acting as an extension of their clients' security operations.

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 primary corporate hub, housing executive leadership, core engineering teams, Security Operations Center (SOC) elements, sales, marketing, finance, and administrative functions.

Notable Features:

Modern office space located in a tech corridor, designed to foster collaboration and house sophisticated security operations capabilities. Features often include open-plan areas alongside secure SOC environments.

Work Culture:

Expel's headquarters culture is often described as transparent, collaborative, and mission-driven, with a strong focus on cybersecurity innovation and employee well-being. The company embraces a 'bring your own device' approach and emphasizes a positive, slightly quirky work environment (e.g., rubber duck mascot).

HQ Significance:

The Herndon HQ is central to Expel's strategic direction, product development roadmap, and coordination of its global security monitoring and response efforts.

Values Reflected in HQ: The HQ environment likely reflects Expel's values of transparency (open spaces), collaboration (meeting areas), and security focus (dedicated SOC areas).

Location:

Expel delivers its security services globally, operating 24/7 Security Operations Centers (SOCs) to provide continuous monitoring and response regardless of customer location. While physical offices are primarily in the US (Herndon, VA) and UK (London), their operational infrastructure and remote workforce support a diverse international client base across North America, EMEA, and potentially other regions, ensuring global threat coverage and support capabilities.

Street Address:

12950 Worldgate Dr #400

City:

Herndon

State/Province:

VA

Country:

USA

Expel's Global Presence

London, UK

Address: Specific street address not consistently published; likely a central London serviced office or regional hub.

Acts as a key hub for market expansion, service delivery, and building Expel's presence across Europe and surrounding areas.

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

Executive Team of Expel

As of April 2025, Expel' leadership includes:

Dave Merkel - Chief Executive Officer & Co-founder
Yanek Korff - Chief Operating Officer & Co-founder
Justin Bajko - Chief Strategy Officer & Co-founder
Greg Lefelar - Chief Financial Officer
Jennifer Lawrence - Chief Revenue Officer
Cat Starkey - Chief Marketing Officer
Rick Hasselman - Chief People Officer
Peter Katz - Chief Strategy Officer

Investors of Expel

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

CapitalG
Paladin Capital Group
Greycroft
Index Ventures
Scale Venture Partners
Battery Ventures
Aspect Ventures
Cisco Investments

Executive New Hires/Exits in the Last 12 Months

Hire0
Exits0

Within the last 12 months (approx. mid-2023 to mid-2024), public records indicate relative stability at the highest C-suite levels (CEO, COO). There may have been VP-level or other senior leadership changes, but no major C-level exits or hires have been widely reported during this specific timeframe. Key appointments like the CFO and CMO occurred slightly outside this window but represent recent strengthening of the leadership team.

Technology (Tech Stack) used by Expel

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 utilizes the email format combining the employee's first initial followed by their last name.

flast@expel.com

Format

jdoe@expel.com

Example

85%

Success rate

News and media

Expel Press ReleaseMay 6, 2024

Expel Named a Leader in The Forrester Wave™: Managed Detection And Response, Q2 2024

Expel was recognized as a Leader in the latest Forrester Wave™ report for Managed Detection and Response (MDR), receiving the highest scores possible in seven criteria, including time-to-value, threat hunting, and managed detection....more

Expel Press ReleaseApril 9, 2024

Expel Unveils Managed Detection and Response (MDR) for Kubernetes

Expel launched its new MDR for Kubernetes service, providing 24/7 monitoring, threat detection, and response capabilities specifically tailored for Kubernetes environments, integrating seamlessly with Amazon EKS and Google GKE....more

Expel Press ReleaseJanuary 23, 2024

Expel Recognized in 2024 Gartner® Market Guide for Managed Detection and Response Services

Expel was included as a Representative Vendor in the Gartner Market Guide for MDR Services for the fourth consecutive year, highlighting its continued presence and offerings in the managed security services market....more

Expel Press ReleaseOctober 17, 2023

Expel Introduces New Tiering for Expel MDR to Meet Customers Where They Are

Expel announced new service tiers for its MDR offering, designed to provide flexible options catering to different customer needs based on the scope of coverage and required capabilities, enhancing accessibility for various organizational sizes and security maturity levels....more

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