Tessian Inc.
Boston, Massachusetts, United States
2023 Revenue
$21.4M(Est.)
Customers
350
Funding
$58.8M
Avg ACV
$61.2K
Team · 2024
60
Founded
2013
Tessian Inc. Revenue & Funding (2023)
Tessian is a cybersecurity company that uses machine learning to automatically prevent human error and data breaches caused by misdirected emails, data exfiltration, and other threats.
Last updated
Tessian Inc. Revenue
In 2023, Tessian Inc.'s revenue reached $21.4M. The company previously reported $12M in 2020. Since its launch in 2013, Tessian Inc. has shown consistent revenue growth.
| Year | Milestone | Source |
|---|---|---|
| 2023 | Tessian Inc. Hit $21.4m revenue in December 2023 | Estimated |
| 2020 | Tessian Inc. Hit $12m revenue in September 2020 | |
| 2013 | Launched with $0 revenue |
Tessian Inc. Valuation, Funding Rounds
Tessian Inc. has not publicly disclosed its valuation. The company has raised $58.8M in total funding to date.
Tessian Inc. has raised $58.8M in total funding across 6 rounds, with its most recent round in 2019.
| Year | Round | Amount | Valuation | % Sold | Source |
|---|---|---|---|---|---|
| 2019 | Funding round | $42M | - | - | |
| 2018 | Funding round | $13M | - | - | |
| 2017 | Funding round | $2.7M | - | - | |
| 2016 | Funding round | $500K | - | - | |
| 2015 | Funding round | $400K | - | - | |
| 2014 | Funding round | $170K | - | - |
Founder / CEO
Tim Sadler
CEO
Tessian is building the world’s first Human Layer Security platform to automatically secure all human-digital interactions within the enterprise. Today, our products use stateful machine learning to protect people using email and to prevent threats like spear phishing, accidental data loss due to misdirected emails, data exfiltration and other non-compliant email activity. We’ve raised $60m from legendary security investors like Sequoia and Accel and have over 150 employees located in San Francisco and London.
Q&A
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Customers
Tessian Inc. serves 350 customers.
Tessian Inc. Employees & Team Size
Tessian Inc. employs approximately 60 people as of 2026, down from 228 in 2023, including 29 sales reps that carry a quota. It serves 350 customers that rely on its solutions.
| Year | Milestone | Source |
|---|---|---|
| 2024 | Reached 60 employees (October 2024) | |
| 2023 | Reached 228 employees (December 2023) | |
| 2023 | Reached 219 employees (September 2023) | |
| 2023 | Reached 228 employees (January 2023) | |
| 2022 | Reached 238 employees (December 2022) | |
| 2022 | Reached 256 employees (January 2022) | |
| 2021 | Reached 262 employees (December 2021) | |
| 2021 | Reached 217 employees (August 2021) | |
| 2020 | Reached 148 employees (December 2020) | |
| 2020 | Reached 138 employees (September 2020) | |
| 2020 | Reached 166 employees (June 2020) | |
| 2019 | Reached 133 employees (December 2019) | |
| 2018 | Reached 77 employees (December 2018) |
Frequently Asked Questions about Tessian Inc.
What is Tessian Inc.'s revenue?
Tessian Inc. generates an estimated $21.4M in annual revenue.
Who founded Tessian Inc.?
Tessian Inc. was founded by Tim Sadler.
Who is the CEO of Tessian Inc.?
The CEO of Tessian Inc. is Tim Sadler.
How much funding does Tessian Inc. have?
Tessian Inc. raised $58.8M across 6 rounds.
How many employees does Tessian Inc. have?
Tessian Inc. has 60 employees.
Where is Tessian Inc. headquarters?
Tessian Inc. is headquartered in Boston, Massachusetts, United States.
Compare Tessian Inc. to the industry
Tessian Inc. operates across multiple industries. Browse revenue, funding, and growth data for Tessian Inc. in each sector below.
Data and Sources
All figures on this page are taken directly from interviews or are estimates from public sources and proprietary models. Not financial advice. Read full disclaimer.
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