Tracked deals
9
9 tracked deals across 2019-2026.
Public Company
Business Services
Proofpoint
Sunnyvale, California, United States
Intent-based protection for every human and every AI agent across email, cloud, and collaboration tools.
- Focus Areas
- Cybersecurity, Email security, Cloud security
- Website
- proofpoint.com
Recent pace
2
2 tracked deals announced in the last 12 months.
Deal mix
Buyout
9 buyout
Proofpoint Acquisition Volume by Year
Last 7 years
Actual
Full-year estimate
Supporting Data
Recent Transactions
-
October 15, 2026
- Buyer
- Proofpoint
- Target
- Varonis
- Industry
- Cybersecurity
- Location
- Florida, United States
- Type
- Buyout
Proofpoint agreed to acquire Varonis in an all-cash transaction valued at approximately $6.3 billion, with Varonis shareholders to receive $49.75 per share. The combination is intended to unite the companies’ cybersecurity capabilities, particularly in data, identity, communications, and AI security; closing is expected in the first half of 2027.
-
February 12, 2026
- Buyer
- Proofpoint, Inc.
- Target
- Acuvity
- Industry
- Cybersecurity
- Location
- California, United States
- Type
- Buyout
Proofpoint, Inc. announced it has acquired Acuvity, an AI enterprise security and governance platform, to expand human- and agent-centric cybersecurity capabilities. The combined offering is intended to provide AI-native visibility, governance, and runtime protection for AI and agent-driven workflows.
-
May 21, 2025
- Buyer
- Proofpoint, Inc.
- Target
- Nuclei, Inc.
- Industry
- Cybersecurity
- Location
- New Jersey, United States
- Type
- Buyout
Proofpoint, Inc. has acquired Nuclei, Inc., a Holmdel, New Jersey-based provider of compliance archiving and AI-driven data enrichment for modern workplace communications. The acquisition integrates Nuclei's capture, transcription, translation and analytics capabilities (100+ app connectors) into Proofpoint's digital communications governance offering to strengthen compliance archiving and surface conversational insights for regulated enterprises.
-
May 15, 2025
- Buyer
- Proofpoint, Inc.
- Target
- Hornetsecurity Group, Hornetsecurity Group (Hornetsecurity)
- Industry
- Cybersecurity
- Location
- Lower Saxony, Germany
- Type
- Buyout
Proofpoint, Inc. entered into a definitive agreement to acquire Hornetsecurity Group, a pan-European provider of AI-powered Microsoft 365 security, data protection, compliance, and security awareness services. The deal is intended to enhance Proofpoint’s ability to deliver human-centric security to small and mid-sized businesses globally through managed service providers (MSPs).
-
October 29, 2024
- Buyer
- Proofpoint Inc.
- Target
- Normalyze
- Industry
- Cybersecurity
- Location
- United States
- Type
- Buyout
Proofpoint entered into a definitive agreement to acquire Normalyze, a Data Security Posture Management (DSPM) provider. The acquisition is expected to close in November 2024, subject to customary closing conditions, and will add Normalyze’s AI-powered DSPM technology to Proofpoint’s human-centric security platform.
-
December 19, 2023
- Buyer
- Proofpoint, Inc.
- Target
- Tessian
- Industry
- Cybersecurity
- Location
- United Kingdom
- Type
- Buyout
Proofpoint, Inc. has completed the acquisition of Tessian, a provider of AI-powered behavioral email security and data loss prevention. The deal integrates Tessian's machine-learning detection for misdirected emails and data exfiltration into Proofpoint's threat and information protection platform to expand its AI-driven defenses across email, cloud, and endpoints.
-
January 10, 2022
- Buyer
- Proofpoint, Inc.
- Target
- Dathena
- Industry
- Cybersecurity
- Location
- Singapore
- Type
- Buyout
Proofpoint has completed the acquisition of Dathena, an AI-powered data discovery and classification specialist, to enhance its Information & Cloud Security and people-centric DLP offerings. The deal integrates Dathena's AI-driven data classification capabilities into Proofpoint's cloud platform, expanding its data protection capabilities and strengthening its presence in Asia.
-
February 22, 2021
- Buyer
- Proofpoint, Inc.
- Target
- InteliSecure, Inc.
- Seller
- Frontier Growth
- Industry
- Cybersecurity
- Location
- Colorado, United States
- Type
- Buyout
Proofpoint, Inc. agreed to acquire InteliSecure, a data-loss-protection managed services provider, for $62.5 million in cash. The acquisition (expected to close in Q1 2021) adds roughly 150 employees and strengthens Proofpoint’s people-centric cloud-based DLP and managed security services; InteliSecure was sold by investor Frontier Growth.
-
November 25, 2019
- Buyer
- Proofpoint, Inc.
- Target
- ObserveIT
- Industry
- Cybersecurity
- Location
- Massachusetts, United States
- Type
- Buyout
Proofpoint, Inc. completed its acquisition of ObserveIT, an insider threat management and endpoint monitoring platform, in November 2019. The deal brings ObserveIT's endpoint agent technology and data risk analytics into Proofpoint's people-centric security portfolio to extend data loss prevention (DLP) and insider-threat capabilities to endpoints.
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