Acquiring Company
Proofpoint
Acquired Company
Hornetsecurity
SunnyvaleInformation TechnologyFinancial ServicesSoftwareMedia And EntertainmentInternet ServicesSecurityCyber SecurityInformation TechnologySecurityCyber SecurityNetwork SecurityCloud SecurityDescription
Proofpoint, Inc. has completed its acquisition of Hornetsecurity Group for $1.8 billion. This strategic acquisition enhances Proofpoint’s leadership in cybersecurity and expands its reach within the European market. Hornetsecurity will operate as a dedicated business unit focused on serving managed service providers and small to midsize businesses worldwide.
Quick answer
Proofpoint is acquiring Hornetsecurity for $1.8 billion, announced December 8, 2025. Proofpoint is based in Sunnyvale, California, United States.
- How much did Proofpoint pay for Hornetsecurity?
- The reported deal value is $1.8 billion.
- What does Proofpoint do?
- Proofpoint, Inc. is a leading cybersecurity and compliance company that protects organizations’ greatest assets and biggest risks: their people.
- Where are Proofpoint and Hornetsecurity based?
- Proofpoint is based in Sunnyvale, California, United States.
- Who are the decision-makers at Proofpoint?
- Fundz holds 1 contact at Proofpoint. Names and contact details are shown to Fundz members.
Source: Fundz verified event record.
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- Alphabet acquires cybersecurity firm Wiz for $32B, $32B (November 9, 2025)
Who to call at Proofpoint, and when
When Proofpoint changes hands, the new owners review vendors, systems and leadership. That is when the door opens.
- An alert the day Proofpoint raises, hires an executive or expands, scored against what you sell
- The decision-makers there, with verified emails
- Who you already know at Proofpoint, from your own LinkedIn network
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Related People
Frequently asked
Who acquired Hornetsecurity?
Hornetsecurity was acquired by Proofpoint, based in Sunnyvale. The deal was reported on December 8, 2025. Proofpoint, Inc. is a leading cybersecurity and compliance company that protects organizations’ greatest assets and biggest risks: their people. Proofpoint is privately held and operates in Information Technology.
When did Proofpoint acquire Hornetsecurity?
Proofpoint's acquisition of Hornetsecurity was reported on December 8, 2025. Proofpoint, Inc. has completed its acquisition of Hornetsecurity Group for $1.8 billion. This strategic acquisition enhances Proofpoint’s leadership in cybersecurity and expands its reach within the European market. Fundz records the date the transaction was first publicly reported, sourced from filings and company announcements.
What does Hornetsecurity do?
Hornetsecurity is a leading cloud security and compliance SaaS provider, which protects the IT infrastructure, digital communication and data of companies and organizations of all sizes. It is privately held, operating in Information Technology.
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