IonQ Acquires Elisity to Expand Quantum Security Platform

IonQ announced an agreement to acquire Elisity, Inc. in an all-stock transaction to combine quantum security capabilities with Zero Trust technology. The deal, announced by IonQ in College Park, Md., aims to help enterprise and government customers address current cyber threats and prepare for the quantum era.

According to StockTitan, the transaction is valued at up to $1.3 billion, including up to $150 million in earnout opportunity tied to Elisity's business performance. The companies said the acquisition will unite IonQ's post-quantum cryptography and quantum key distribution capabilities with Elisity's security platform.

StockTitan reported that Elisity brings more than 100 global customer deployments, recurring revenue, and relationships with chief information security officers. The company operates in the microsegmentation market, which StockTitan described as having an opportunity exceeding $10 billion.

"With Elisity and its team as part of IonQ, we will be well positioned to help customers protect critical infrastructure and enterprise networks throughout the transition to the quantum era. As I said first, Q-Day is coming much faster than predicted. IonQ is offering its customers a vertically integrated full-stack quantum platform across quantum computing, networking, sensing and cybersecurity. Just as adding SkyWater Technology expanded IonQ’s capabilities in chip design, fabrication and packaging, Elisity will bring proven enterprise policy enforcement scale and deployment experience to our quantum security strategy and will give IonQ a strong growth platform to serve customers and create value for our shareholders," said Niccolo de Masi, Chairman and CEO of IonQ.

IonQ said the combined business will expand its cybersecurity offerings by pairing cryptographic protection with identity-based controls. According to StockTitan, the companies plan to extend Elisity's IdentityGraph with cryptographic inventory and risk information.

"Our customers need to prioritize post-quantum cryptography initiatives while securing existing assets to keep essential operations running. With IonQ, we will be optimally positioned to partner with them to modernize their crypto-agility programs, accelerate post-quantum cryptography capabilities while advancing their holistic Zero Trust posture and deploy hybrid-cybersecurity solutions today that are prepared for the quantum future," said James Winebrenner, CEO of Elisity.

According to StockTitan, Elisity will continue serving customers under its current leadership after the transaction closes. The companies expect to pursue cross-selling opportunities and develop integrated security offerings for enterprise and government customers.

IonQ said its security business has included quantum-safe communications networks in Switzerland, Poland, Romania, and Slovakia. StockTitan reported that IonQ delivered 40% year-over-year growth in multiproduct revenue in the second quarter of 2026.