M&A Deal Summary

F5 Acquires CalypsoAI

On September 11, 2025, F5 acquired information technology company CalypsoAI

Acquisition Highlights
  • This is F5’s 4th transaction in the Information Technology sector.
  • This is F5’s 11th transaction in the United States.
  • This is F5’s 2nd transaction in New York.

M&A Deal Summary

Date 2025-09-11
Target CalypsoAI
Sector Information Technology
Buyer(s) F5
Deal Type Add-on Acquisition
Advisor(s) Cooley (Legal)

Target

CalypsoAI

New York, New York, United States
CalypsoAI provides the only full-lifecycle platform to secure AI models and applications at the inference layer, deploying Agentic Warfare to protect organizations from evolving adversaries. CalypsoAI was formed in 2018 and is based in New York, New York.

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Buyer(S) 1

Buyer

F5

Seattle, Washington, United States

Category Company
Founded 1996
Sector Information Technology
Employees6,056
Revenue 2.8B USD (2024)
DESCRIPTION
F5 Networks' corporate headquarters in Seattle, Washington.
F5 Networks' corporate headquarters in Seattle, Washington.

F5 is a provider of Application Delivery Networking (ADN) technology that optimizes the delivery of network-based applications and the security, performance, and availability of servers, data storage devices, and other network resources. The company's products collectively function as a dynamic control plane that simplifies the management of data center operations and the delivery of services across diverse data center resources. F5 was founded in 1996 and is based in Seattle, Washington.


DEAL STATS #
Overall 13 of 13
Sector: Information Technology M&A 4 of 4
Type: Add-on Acquisition M&A Deals 13 of 13
State: New York M&A 2 of 2
Country: United States M&A 11 of 11
Year: 2025 M&A 1 of 1
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2021-09-20 Threat Stack

Boston, Massachusetts, United States

Threat Stack is involved in providing cloud security and compliance for infrastructure and applications, helping companies securely leverage the business benefits of the cloud with proactive risk identification and real-time threat detection across cloud workloads. The Threat Stack Cloud Security Platform delivers full-stack security observability across the cloud management console, host, container, orchestration, managed containers, and serverless layers. It provides the flexibility to consume telemetry within existing security workflows or manages it with clients through the Threat Stack Cloud SecOps Program to respond to security incidents and improve the organization’s cloud security posture over time. Threat Stack was founded in 2012 and is based in Boston, Massachusetts.

Buy $68M