Proofpoint Stock: Acquisition and Valuation History
Cybersecurity
By UpMarket Research | Last updated: September 2026
CEO Sumit DhawanFounded 2002HQ Sunnyvale, US
Proofpoint is a cybersecurity company that provides cloud-based protection for email, data, and users against phishing, malware, and other advanced threats. It serves enterprises with security and compliance products focused on defending people, information, and digital communications.
UpMarket does not offer Proofpoint shares. This page covers Proofpoint's history before the acquisition.
Last Reported Valuation
$12.3B
How to Review Proofpoint's Funding History on UpMarket
Proofpoint was acquired by Thoma Bravo in August 2021 and no longer has shares of its own. UpMarket does not offer Proofpoint shares. This page covers Proofpoint's valuation and funding history before the acquisition.
Step 01
Check the acquisition details
Proofpoint was acquired by Thoma Bravo in August 2021.
Step 02
Review the valuation history
See how Proofpoint's private-market valuation changed across funding rounds before the acquisition.
Step 03
Review funding and revenue data
See reported funding rounds and revenue figures on this page, with their sources.
Step 04
Explore private companies
Accredited investors can review UpMarket's current pre-IPO offerings in companies that have not yet gone public.
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Valuation Growth Over Time
Post-money valuation by round
Previous roundsMost recent
Date
Round
PPS (split-adj.)
Valuation
Aug 23, 2019
Post-IPO
Jun 11, 2015
Post-IPO
Dec 11, 2013
Post-IPO
Feb 26, 2008
Series F
Mar 23, 2006
Series D
Proofpoint Revenue and Growth
Annual revenue
Why Investors Are Watching Proofpoint
Growth Signal
Q1 FY26 momentum showed double-digit ARR and revenue growth
Proofpoint said Q1 FY26 delivered double-digit growth in both ARR and revenue, with roughly 440 new logos added. Gross retention stayed above 92%, and the company kept growing $1M+ platform customers.
Competitive Moat
Nexus AI scans 2.1T emails yearly across 100-plus threat groups
Proofpoint says its Nexus AI models process 2.1 trillion emails a year, supported by a threat intelligence team tracking 100+ unique threat actor groups. The company also cites more than 8,900 active threat campaigns as input to detection.
Product Milestone
New unified email and data security platform launches in 2026
Proofpoint announced a unified email security architecture that combines Secure Email Gateway and API-based protection into one model. It also added AI Data Access Governance and extended data security posture management to on-premises systems, with rollout planned for Q2 2026.
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No. Proofpoint was acquired by Thoma Bravo in August 2021 and no longer has shares of its own. UpMarket does not offer Proofpoint shares.
Proofpoint has no stock price of its own since its acquisition by Thoma Bravo. The prices shown on this page are historical private-market prices from before the acquisition.
No. Proofpoint was acquired by Thoma Bravo and UpMarket does not offer Proofpoint shares. Accredited investors interested in companies that have not yet gone public can review UpMarket's current pre-IPO offerings.
Proofpoint is no longer an independent company, so its shares are not available to buy. This page is kept for its historical funding and valuation data. UpMarket does not offer Proofpoint shares.
In a pre-IPO transaction, accredited investors purchase shares from existing shareholders (such as employees, early investors, or other holders) through secondary market platforms. The company itself does not issue new shares in these transactions. UpMarket facilitates these trades as a FINRA-registered broker-dealer, handling compliance, documentation, and settlement on behalf of both parties.
Proofpoint was acquired by Thoma Bravo in August 2021. What former shareholders received, cash or shares of the buyer, was set by the terms of the acquisition.
UpMarket does not offer Proofpoint shares. The minimum for most pre-IPO offerings on UpMarket is $50,000.
Proofpoint's last valuation was set by its acquisition by Thoma Bravo. The figures on this page show its valuation history before the acquisition.
Proofpoint provides cloud-based cybersecurity for email, data, and users with $2.0B+ ARR in 2024, and Q1 FY26 showed double-digit ARR and revenue growth. Proofpoint is now part of Thoma Bravo, and UpMarket does not offer its shares.