Proofpoint to acquire Hornetsecurity ($1.8B EV)

Proofpoint signed a definitive agreement to acquire Hornetsecurity (announced 15 May 2025). The deal values Hornetsecurity at $1.8 billion enterprise value. Proofpoint’s announcement cites over $160 million in annual recurring revenue (ARR).

Source: https://www.proofpoint.com/us/newsroom/press-releases/proofpoint-signs-definitive-agreement-acquire-hornetsecurity