Proton AG
PrivateLast Round
Grant
Mar 8, 2019
Total Funding Raised
$5.35M
Momentum
Top 25%
of companies Caplight tracks
Company Overview
Proton AG is a software company that provides a suite of privacy-focused online services, including encrypted email, VPN, calendar, cloud storage, and a password manager.
Sector
Cybersecurity
Verticals
Data Protection, Email Security, Cloud Security, Identity & Access
Business Model
B2C
Customer Profile
Subscription SaaS, Freemium
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Proton AG Comparables
Compare Proton AG with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Mailfence | 82% | |
| mailbox.org | 82% | |
| Nord Security | 81% | |
Proton AG Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Grant | Mar 8, 2019 | ||||
| Seed | Mar 18, 2015 | ||||
| Crowdfunding | Aug 31, 2014 | ||||
| Crowdfunding | Jul 30, 2014 |
Proton AG Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Fongit | Seed |
| European Commission | Grant |
| CRV | Seed |
Market signals
Structured signals derived from secondary market and firmographic data.
- Apr 1, 2026
Company states it is profitable in a job posting.
- Sep 25, 2025
New interface and offline mode for iOS and Android.
Proton AG Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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