IonQ announced that it has signed a definitive agreement to acquire Elisity, a company specializing in zero-trust access software, in an all-stock transaction valued at up to $1.3 billion. IonQ plans to complete the transaction during the fourth quarter of 2026, with Elisity CEO James Winebrenner and the current management team remaining in leadership of the company’s operations after closing.
Deal Contingent on Elisity’s Performance
The total consideration includes up to $150 million in additional consideration tied to the performance of Elisity’s business. The number of IonQ shares issued will be based on the volume-weighted average price over the 20 trading sessions preceding closing, with the price used in the calculation ranging between $33.07 and $49.61.
Elisity was founded in 2019, has raised more than $70 million, and has more than 100 customer deployments. The company provides software that identifies the users, devices, workloads, and artificial intelligence agents that can communicate within enterprise networks, based on least-privilege policies.
Combining Access Control with Post-Quantum Readiness
Elisity relies on the IdentityGraph component, which brings together data the company obtains from partner tools, including identity, asset, and risk information, to guide access-granting decisions. The companies intend to add cryptographic inventories and risk data to this component.
The stated goal is to help organizations prioritize post-quantum cryptography upgrades according to the business risks and sensitivity of the affected operations, rather than treating the transition as a synchronized technical update for all systems.
What Changes in Practice?
The deal combines two complementary functions: reducing the exposure surface through access controls and identifying cryptographic vulnerabilities that may require remediation before the emergence of quantum computers capable of breaking widely used public-key encryption algorithms. According to statements from the companies, IonQ wants to use Elisity’s relationships with customers and chief information security officers to reach more enterprise and government buyers and market post-quantum cryptography, quantum key distribution, and quantum computing products.
IonQ’s current portfolio includes quantum computing, networking, and sensing, along with post-quantum cryptography and quantum key distribution. Winebrenner said that access controls reduce exposure, while cryptographic upgrades address fundamental vulnerabilities. IonQ CEO Niccolo de Masi also linked the deal to what the company calls “Q-Day,” meaning the stage at which quantum computers become capable of breaking widely used public-key encryption.
Limitations and Open Questions
The deal remains subject to closing, and part of its value is tied to Elisity’s performance. The announcement does not provide technical details about how the companies’ products will be integrated or the timeline for delivering cryptographic risk inventory capabilities. Therefore, the practical value for customers will depend on the execution of this integration and its ability to turn access and cryptographic data into actionable upgrade decisions.