IonQ (NYSE: IONQ) announced on Oct. 12 that it has agreed to acquire Elisity, a Zero Trust cybersecurity company, in an all-stock transaction valued at up to $1.3 billion. The deal pairs IonQ’s post-quantum cryptography (PQC) and quantum key distribution (QKD) technology with Elisity’s enterprise network security platform, and it extends IonQ’s push beyond quantum computing into security.
Founded in 2019, Elisity helps organizations apply Zero Trust principles to users, devices, workloads, AI agents, and other non-human identities. Its IdentityGraph product pulls together identity, asset, and risk data to set least-privilege access policies, letting teams simulate a policy before enforcing it and restrict each identity to only the communications it needs. IonQ says Elisity has more than 100 customer deployments, including a growing number of Fortune 500 companies, and has roughly doubled both revenue and customers year over year with no churn among deployed customers. IonQ also points to the microsegmentation market, which it sizes at more than $10 billion with double-digit annual growth.
IonQ is pitching a single security stack for two problems: attacks happening now, including those involving AI agents, and the longer-term risk that quantum computers eventually break today’s encryption. The companies plan to extend IdentityGraph with cryptographic inventory and risk information. IonQ CEO Niccolo de Masi said “Q-Day” is arriving faster than predicted, and compared the deal to IonQ’s earlier SkyWater Technology acquisition, which added chip design and fabrication capabilities. The announcement also cites a June 22, 2026 White House executive order and other federal directives pushing agencies toward PQC migration.
IonQ says its quantum-safe communications networks are already deployed in Switzerland, Poland, Romania, and Slovakia, and that multiproduct revenue grew 40% year over year in the second quarter of 2026. Elisity’s customer base and CISO relationships would give IonQ new channels to sell PQC, QKD, and quantum computing to enterprise and government buyers.
The transaction includes up to $150 million in earnout payments tied to Elisity’s performance. The number of IonQ shares issued will be set at closing using the 20-day volume-weighted average price before closing, with the price floored at $33.07 and capped at $49.61 per share. The deal is expected to close in the fourth quarter of 2026, subject to customary conditions including regulatory approval. Elisity will continue operating under its current leadership, including CEO James Winebrenner.
Closing risk, customer and employee retention, and integration are the main variables, all flagged in IonQ’s own forward-looking statements. Investors should also watch whether IonQ can turn the cross-sell story into reported revenue, and how the share issuance affects dilution given the price collar.
