Mimecast
Unicorn exit · $5.8Bacquired by PermiraLondon, GB · Founded 2016 · 2,390 employees on LinkedIn · 5 known investors
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Acquired by Permira December 2021 · $5.8B ($80.00 per share, ~$5.8 billion all-cash) · source ↗
Mimecast provides email security, data loss prevention, cloud archiving, and human risk management products used by organizations to protect communications and data. Its cybersecurity portfolio serves enterprise and channel-partner customers across regions including EMEA and APAC.
Founders & leadership
Mimecast was founded in 2016 by Peter Bauer.

Investors · 5
How we know: Adams Street Partners's portfolio page · Not right? Tell us
How we know: Dawn Capital's portfolio page · the VCSheet dataset · dawncapital.com · Not right? Tell us
How we know: insightpartners.com · Not right? Tell us
How we know: Khosla Ventures's portfolio page · Not right? Tell us
How we know: a partner's Signal profile · Not right? Tell us
Reported raises · per SEC filings
Form D private placements$4.2M disclosed across 2 rounds · 2016–2017
▶$3MraisedDec 2017 · 9 investors · OtherRule 506(b)
- Timothy JacksonExecutive Officer
- Richard HarjesDirector
- Randy AltschulerDirector
- Michael MadonExecutive Officer, Director
- Adam FletcherDirector
- Offering amount
- $3M
- Amount sold
- $3M
- First sale
- Dec 2017
- Incorporated
- Corporation, Delaware, 2016
- Federal exemptions
- 06b
▶$1.2MraisedJan 2017 · 11 investors · OtherRule 506(b)
- Michael MadonExecutive Officer, Director
- Adam FletcherDirector
- Randy AltschulerDirector
- Timothy JacksonExecutive Officer
- Offering amount
- $1.5M
- Amount sold
- $1.2M
- First sale
- Jun 2016
- Incorporated
- Corporation, Delaware, 2016
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Acquisitions · 3
Early investors' stakes continue via these dealsAtaata was an Arlington, Virginia security-awareness training company that used short, humorous video modules and phishing simulations to change employee behaviour. Backed by Maryland TEDCO, Next Frontier Capital and SaaS Ventures, it was acquired by Mimecast in 2018 and became Mimecast Awareness Training.
AI-powered security platform for enterprise collaboration tools that monitors communications and identifies compliance risks
Message Control (MessageControl) built AI that detects social-engineering and human-identity attacks — impersonation, business email compromise and credential theft — inside cloud email. Backed by Cyber Mentor Fund, it was acquired by Mimecast in 2020.
Frequently asked questions
- What does Mimecast do?
- Mimecast provides email security, data loss prevention, cloud archiving, and human risk management products used by organizations to protect communications and data. Its cybersecurity portfolio serves enterprise and channel-partner customers across regions including EMEA and APAC.
- Who founded Mimecast?
- Mimecast was founded by Peter Bauer in 2016.
- Who are Mimecast's investors?
- Mimecast's investors include Adams Street Partners, Dawn Capital, Insight Partners, Khosla Ventures, Index Ventures.
- How much funding has Mimecast raised?
- Mimecast has disclosed $4.2M raised across 2 rounds.
- Who acquired Mimecast?
- Mimecast was acquired by Permira.
- Where is Mimecast headquartered?
- Mimecast is headquartered in London, GB.




