What departments does GreatHorn have?

GreatHorn has employees across 7 departments including Entrepreneurship, Finance, Engineering, Customer Success, Sales.

What is the largest department at GreatHorn?

The largest department at GreatHorn is Entrepreneurship with 3 employees.

Where are GreatHorn employees located globally?

GreatHorn has employees across 1 continents and 2 countries including Canada, United States Of America.

How has GreatHorn's team size changed over time?

GreatHorn's team has decreased from approximately 37 to 7 employees based on available data.

Learn more at LeadIQ.com

GreatHorn Employee Directory

Computer and Network SecurityMassachusetts, United States2-10 Employees

GreatHorn provides a cloud-based email security solution designed to reduce risk from everyday email use at large, multinational companies. Based in Waltham, Massachusetts, the company employs a multi-stage approach that blends data science, machine learning, technical analysis, and human input to protect organizations before, during, and after phishing attempts.

GreatHorn Global Highlights

North America
41

United States Of America
40
Canada
1

GreatHorn's Leadership

M. C. M.
Chief Executive Officer
Mobile Phone
Email
K. O. B.
Chief Executive Officer
Mobile Phone
Email
K. O.
Chief Executive Officer & Co-Founder
Mobile Phone
Email
C. Y.
Vice President Of Finance
Mobile Phone
Email
M. A.
Chairman
Mobile Phone
Email
J. L.
Executive Vice President Engineering
Mobile Phone
Email
J. C.
Customer Success Manager
Mobile Phone
Email
M. S.
Senior Software Engineer
Mobile Phone
Email

GreatHorn Employee Metrics

100%

50%

2026

2025

Engineering
Customer Success
Sales
Analytics
Marketing
Other
Consultant
Business
Media & Communications
Quality Assurance

Contact profiles from GreatHorn

Name

Title

Contact

Location

Last Update

M. C. M.
Chief Executive Officer
Mobile Phone
Email
CanadaBritish Columbia
Jun 26, 2026
K. O. B.
Chief Executive Officer
Mobile Phone
Email
Oct 23, 2024
K. O.
Chief Executive Officer & Co-Founder
Mobile Phone
Email
Aug 16, 2026
M. A.
Chairman
Mobile Phone
Email
Jul 07, 2024
C. Y.
Vice President Of Finance
Mobile Phone
Email
Aug 21, 2026
J. L.
Executive Vice President Engineering
Mobile Phone
Email
Jun 27, 2025
J. C.
Customer Success Manager
Mobile Phone
Email
Oct 17, 2024
M. S.
Senior Software Engineer
Mobile Phone
Email
Nov 12, 2024
B. D.
Enterprise Sales Representative
Mobile Phone
Email
Oct 18, 2024
E. W.
Solutions Engineer
Mobile Phone
Email
Oct 21, 2024

Frequently Asked Questions

What is GreatHorn known for?

GreatHorn operates in the Computer and Network Security industry; you can contact the main corporate office by phone at

+1-800-604-****

. Explore GreatHorn's company overview page for more information.

What is GreatHorn's most common email format?

GreatHorn employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more GreatHorn email formats with LeadIQ.

How many employees does GreatHorn have currently?

GreatHorn has approximately 7 employees as of August 2026. These team members are located across 1 continents, including North America.

Who are GreatHorn's key employees and leadership?

As of August 2026, GreatHorn's key employees include:

Chief Executive Officer: M. C. M.
Chief Executive Officer: K. O. B.
Chief Executive Officer & Co-Founder: K. O.
Vice President Of Finance: C. Y.
Chairman: M. A.

Looking for contact data? Unlock accurate emails and phone numbers for your ideal prospects with LeadIQ.

Everything for prospecting,
in one platform.

What you can expect from LeadIQ:

B2B data verified in real-time
Sync data to your CRM, & add it to an outreach sequence in one click
Integrations with your tech stack for optimal efficiency
A patented AI cold email generator
Account & contact-level job change tracking

Ready to create more pipeline?

Get a demo and discover why thousands of SDR and Sales teams trust
LeadIQ to help them build pipeline confidently.

GreatHorn Employee Directory

Find GreatHorn employees' phone numbers or email addresses

Name search is limited — try advanced search instead