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Tessian

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Creates a human layer security that helps people work without security disruptions getting in the way

Boston, United StatesFounded 2013Cybersecurity
Valuation $500M–1B Last recorded · 2026
Revenue $10–50M Latest reported FY
Headcount <100 Current team size
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At a glance

Founded
2013
Headquarters
Boston, United States
Sector
Cybersecurity
Power Law
Colt$25–100M revenue

Knowledge graph

News, research, reports and resources connected to this company by Dealroom

Investors

22 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed14 investors entered at this stage

  • Walking Ventures
  • Philipp Kobus
  • Amadeus Capital Partners
  • Keith Hyman
  • Tim Jackson
  • Crane Venture Partners
  • LocalGlobe
  • Accel
  • CyLon
  • Tom James
  • Steve Thompson
  • Winton Ventures
  • Ian Hamilton
  • Santiago Izaguirre

Series A1 investor entered at this stage

Series B and later7 investors entered at this stage

  • Sozo Ventures
  • Tech Nation
  • March Capital Partners
  • Latitude
  • Okta Ventures
  • Sequoia
  • Schroder Adveq

Talent

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Employees mapped 41 incl. 7 AI specialists
Founders Hidden — book a demo/100 quality score
Key operators 28 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia 5 alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Alumni founders

5 startups

Former Tessian employees who went on to found companies, sorted by Dealroom signal score.

ElevenLabsEst. 2022
Piotr DabkowskiUnited Kingdom
Signal score97
TracebitEst. 2022
Andy SmithUnited Kingdom
Signal score92
MazeEst. 2024
Harry WetheraldUnited Kingdom
Signal score91
DrivetrainEst. 2021
Tarkeshwar ThakurIndia
Signal score85
WorkflowEst. 2022
Paul Sanglé-FerrièreUnited Kingdom
Signal score71
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Global footprint

Workforce and web traffic by country
Workforce by country
🇺🇸 United States · Boston HQ
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Web traffic by country
4.4K monthly visits
across markets
🇺🇸 United States59.1%
🇬🇧 United Kingdom34.1%
🇮🇳 India6.8%
Top 3 markets shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Tessian on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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