Tessian Information
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.
Organization Website | proofpoint.com |
Social Links |    |
Phone Number | 020-8068-5223 |
Industries | |
Headquarters Location | 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 growth in traffic to the proofpoint.com website. In November, traffic increased to 2734067, compared to 2515654 in the previous month. The highest traffic in 2025 was recorded in November, reaching 2734067 visits.
Employees Turnover 4 quarter 2025
Length of Employment
Employee tenure at Tessian shows a diverse range of experience levels:
8% for 1–2 years23% for 3–4 years52% for 5–7 years11% for 8–10 years6% have over 11 years of service at Tessian
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