

Tessian: Detailed Company Information & Corporate Profile
Summary
Tessian is a private company that has been in the industry for 14 years. The company currently specializes in the Information Technology and Services, Cybersecurity areas. The position of the Co-Founder & CEO is occupied by Tim Sadler. Its headquarters is located at London, England, GB. The number of employees ranges from 100 to 250. The annual revenue of Tessian varies between 5.0M and 25M. Total funding of the company - $131.7M. To connect with Tessian employee register on SignalHire.
| Tessian Website | proofpoint.com |
| Social Links | |
| Phone Number | 020-8068-5223 |
| Industries | |
| Tessian Headquarters address | Boston, Massachusetts, US |
| Employees Size | 200-500 employees |
| Specialties | Cyber Security, Data Loss Prevention, Information Security, Machine Learning, Artificial Intelligence, Spear Phishing |
| SIC Code | 7372 |
| Founded | 2013 |
| Estimated Annual Revenue | $5.0M - 25M |
| Operating Status | Independent Company |
Competitors
Founded | Type | Employees | Revenue | Funding | |
|---|---|---|---|---|---|
| 2011 | Privately Held | 100 - 250 | 4.1M | $35M | |
| 1979 | Privately Held | 100K - 9.9M | 17.7B | $412.5M | |
| 2011 | Public Company | 1.0K - 5.0K | 874.4M | $1.1B | |
| 2002 | Privately Held | 1.0K - 5.0K | 321.7M | $143.7M |
Estimated Website Traffic
The chart shows a decline in traffic to the proofpoint.com website. In February, traffic decreased to 2684828, compared to 2828219 in the previous month. The highest traffic in 2026 was recorded in January, reaching 2828219 visits.
Workforce Turnover
Corporate Tenure Analytics
Tessian Workforce Experience Insights
7% for 1–2 years31% for 3–4 years43% for 5–7 years10% for 8–10 years10% have over 11 years of service at TessianCompanies Similar to Tessian
Tessian Corporate Information: FAQ
Data Privacy
GDPR COMPLIANT
SignalHire complies with the General Data Protection Regulation (GDPR). SignalHire follows GDPR requirements, including but not limited to rights of data subjects to access, correct, or delete their personal information and supports the right to be forgotten.
CCPA COMPLIANT
SignalHire is CCPA-compliant and provides California residents the right to know, access, opt out, and request deletion of their personal data.









