Tessian is an email security and data loss prevention company, headquartered in London, United Kingdom, founded in 2013.
| Date | Round | Amount | Investors |
|---|---|---|---|
| 2021-09-21 | Other | Undisclosed | Future Fifty |
| 2021-08-10 | Series C | $9M | Citi Ventures, Okta Ventures, Sozo Ventures |
| 2021-05-25 | Series C | $65M | March Capital |
| 2019-01-25 | Series B | Undisclosed | Upscale |
| 2019-01-16 | Series B | $42M | Sequoia Capital |
| 2018-06-17 | Series A | $13M | Accel, Balderton Capital |
| 2017-04-04 | Seed | $2.7M | Accel, LocalGlobe |
| 2016-07-15 | Seed | $396K | CyLon Ventures, Winton Ventures |
| 2015-06-30 | Pre-Seed | $341K | Fraser, Ian Hamilton, Keith Hyman, Philipp Kobus, Santiago Izaguirre, Steve Thompson, Tim Jackson |
| 2014-04-01 | Seed | $216K | Tim Jackson, Walking Ventures |
Tessian was acquired by Proofpoint (2023-10-30).
Data from The Signal by Return on Security — cybersecurity funding, M&A activity, and company intelligence.