Proofpoint Spends $6.3 Billion to Guard the Data AI Feeds On

Posted on in Strategy

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Proofpoint, the cybersecurity company owned by private equity firm Thoma Bravo, has agreed to acquire Varonis Systems in an all-cash deal valued at about $6.3 billion. Varonis shareholders will receive $49.75 per share. That is a 52% premium to the June 22, 2026 close, the last full trading day before the first sale rumours, and a 17% premium to the September 1 close, before further media reports. The price values Varonis at about 8.4 times its trailing revenue.

Varonis's board approved the deal unanimously after a committee of independent directors reached out to both strategic and financial buyers. Closing is expected in the first half of 2027, subject to shareholder and regulatory approvals. Afterwards, Varonis will leave Nasdaq and become private.

Security for the age of AI

The strategic pitch is all about artificial intelligence. Proofpoint is known for email and human-focused security, while Varonis specializes in data security. Together, the companies say they will offer a unified platform covering data discovery and protection, access control for both people and AI agents, and data loss prevention. The combined business will serve more than 16,000 enterprises.

"As AI becomes embedded across the enterprise, the data it can access determines both its value and its risk." — Sumit Dhawan, Proofpoint CEO

Dhawan called the deal a defining step in Proofpoint's evolution into a cybersecurity platform built for the future of AI. Varonis co-founder, CEO and chairman Yaki Faitelson summed up his company's mission in one line: "Our mission is to secure AI and the data that powers it." It seems every security company now has the same mission statement; the difference is who can afford to buy the other.

Money and advisers

Thoma Bravo is providing committed equity and has lined up debt financing, and Ontario Teachers' Pension Plan will invest in Proofpoint as part of the transaction. Varonis will report third-quarter results on November 3, 2026, without an earnings call. Goldman Sachs advised Varonis, while BofA Securities, Morgan Stanley, J.P. Morgan, UBS and Mizuho advised Proofpoint.