IonQ to Acquire Zero Trust Firm Elisity for Up to $1.3 Billion

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IonQ on Monday said it signed a definitive agreement to buy Elisity in a stock-only transaction worth up to $1.3 billion.

Up to $150 million of that amount is earnout consideration, contingent on how Elisity’s business performs. IonQ expects to complete the acquisition in the fourth quarter of 2026.

The number of IonQ shares issued will depend on the company’s volume-weighted average price over 20 trading days ending shortly before closing, but the price will be kept between $33.07 and $49.61.

Founded in 2019, Elisity sells software that restricts which users, devices, workloads and AI agents can communicate on enterprise networks, based on least-privilege policies. A component called IdentityGraph combines what Elisity collects itself with data from partner tools, including identity, asset and risk details, to guide access decisions.

According to IonQ, Elisity has more than 100 customer deployments. The startup raised more than $70 million.

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