Exhibit 99.1

IonQ Announces First Quarter Financial Results

COLLEGE PARK, Md.--(BUSINESS WIRE)-- IonQ (NYSE: IONQ), a leading commercial quantum computing and networking company, today announced financial results for the quarter ended March 31, 2025.

“I am pleased with the strong start to the year at IonQ, including revenue above the midpoint of guidance for the first quarter and almost $700 million in cash equivalents as of March 31. We delivered important commercialization and expansion milestones for both our quantum computing and quantum networking businesses,” said Niccolo de Masi, CEO of IonQ. “We’re delivering real-world value for our customers today, including a recent demonstration of a 12% speed improvement over classical computing in a simulation of a heart pump using quantum processed data and a production product by our partner Ansys.”

“We look forward to adding a unique accelerant to both our quantum networking and quantum computing roadmaps, via the announced acquisition of Lightsynq. Lightsynq’s unique quantum memory technology, IP, and Harvard-research pedigree is expected to accelerate IonQ’s commercial systems to tens-of-thousands, and someday millions of qubits. In addition, we expect that Lightsynq’s quantum memory will also power the future quantum internet by allowing repeaters to ultimately be spaced over one hundred kilometers apart.”

de Masi continued, “We also announced the first-ever quantum computing and networking hub, in partnership with EPB. This groundbreaking deal includes the sale of a new Forte Enterprise system and the establishment of a permanent IonQ office focused on jointly creating algorithms designed for energy grid optimization. The global availability of our new Europe-based Forte Enterprise system will deliver value to our international customers with access over Amazon Braket, QuantumBasel’s IonQ cloud offering, and our own IonQ Quantum Cloud by adding compute capacity and fault tolerance from our Tennessee location.”

“Further, the closure of our acquisition of a controlling stake of ID Quantique, and agreement to acquire Capella, solidifies our global quantum networking position, which now includes offices in South Korea, Switzerland, and the US. We believe IonQ is well positioned to capitalize on both technical and commercial advances in quantum computing and quantum networking.”

Financial Highlights

*Adjusted EBITDA is a non-GAAP financial measure defined under “Non-GAAP Financial Measures,” below, and is reconciled to net loss, its closest comparable GAAP measure, at the end of this release.

Q1 and Recent Commercial Highlights

Q1 and Recent Technical Highlights

2025 Financial Outlook

First Quarter 2025 Conference Call

IonQ will host a conference call today at 4:30 p.m. Eastern time to review the Company’s financial results for the first quarter ended March 31, 2025 and to provide a business update. The call will be accessible by telephone at 877-407-4018 (domestic) or +1-201-689-8471 (international). The call will also be available live via webcast on the Company’s website here, or directly here. A telephone replay of the conference call will be available approximately three hours after its conclusion at 844-512-2921 (domestic) or 412-317-6671 (international) with access code 13752791 and will be available until 11:59 p.m. Eastern time, May 20, 2025. An archive of the webcast will also be available here shortly after the call and will remain available for one year.

Non-GAAP Financial Measures

To supplement IonQ’s condensed consolidated financial statements presented in accordance with GAAP, IonQ uses non-GAAP measures of certain components of financial performance. Adjusted EBITDA is a financial measure that is not required by or presented in accordance with GAAP. Management believes that this measure provides investors an additional meaningful method to evaluate certain aspects of the Company’s results period over period. Adjusted EBITDA is defined as net loss before interest income, interest expense, income tax expense, depreciation and amortization expense, stock-based compensation, change in fair value of assumed warrant liabilities, and other non-recurring non-operating income and expenses. IonQ uses Adjusted EBITDA to measure the operating performance of its business, excluding specifically identified items that it does not believe directly reflect its core operations and may not be indicative of recurring operations. The presentation of non-GAAP financial measures is not meant to be considered in isolation or as a substitute for the financial results prepared in accordance with GAAP, and IonQ’s non-GAAP measures may be different from non-GAAP measures used by other companies. IonQ shows a reconciliation of GAAP to non-GAAP financial measures at the end of this release.

About IonQ

IonQ, Inc. is a leader in the quantum computing and networking industries, delivering high-performance systems aimed at solving the world’s largest and most complex commercial and research use cases. IonQ’s current generation quantum computers, IonQ Forte and IonQ Forte Enterprise, are the latest in a line of cutting-edge systems, boasting 36 algorithmic qubits. The company’s innovative technology and rapid growth were recognized in Newsweek’s 2025 Excellence Index 1000, Forbes’ 2025 Most Successful Mid-Cap Companies list, and Built In’s 2025 100 Best Midsize Places to Work in Washington DC and Seattle, respectively. Available through all major cloud providers, IonQ is making quantum computing more accessible and impactful than ever before. Learn more at IonQ.com.

IonQ Forward-Looking Statements

This press release contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Some of the forward-looking statements can be identified by the use of forward-looking words. Statements that are not historical in nature, including the words “pending,” “look forward,” “accelerate,” “anticipate,” “expect,” “suggests,” “plan,” “believe,” “intend,” “estimates,” “targets,” “projects,” “should,” “could,” “would,” “may,” “will,” “forecast,” “offers” and other similar expressions are intended to identify forward-looking statements. These statements include those related to IonQ’s position in the quantum computing and networking sector; the efficacy of new applications of quantum computing; the relevance and utility of quantum algorithms and applications run on IonQ’s quantum computers; the success of partnerships and collaborations between IonQ and other parties, including development and

commercialization of products and services with such parties; IonQ closing anticipated acquisitions; IonQ's ability to utilize the technology of acquired companies to accelerate the development and scale of IonQ’s systems and offerings; advancement of quantum networking technology; the Company’s technology driving commercial applications in the future; the Company’s future financial and operating performance, including our preliminary outlook and guidance; the appearance of new applications of IonQ’s products and services; the ability for third parties to implement IonQ’s offerings to solve their problems and increase their quantum computing capabilities; expansion of IonQ’s sales pipeline; IonQ’s quantum computing capabilities and plans; future deliveries of and access to IonQ’s quantum computers and services; future purchases of IonQ’s offerings by customers using congressionally-appropriated funds from the U.S. government; IonQ’s performance of existing contracts in the future, including anticipated timing of completion of research, development and manufacturing by IonQ; IonQ receiving additional revenues under planned subsequent phases of customer contracts; and the scalability and reliability of IonQ’s quantum computing offerings. Forward-looking statements are predictions, projections and other statements about future events that are based on current expectations and assumptions and, as a result, are subject to risks and uncertainties. Many factors could cause actual future events to differ materially from the forward-looking statements in this press release, including but not limited to: changes in the competitive industries in which IonQ operates, including development of competing technologies; our ability to sell effectively to government entities and large enterprises; changes in laws and regulations affecting IonQ’s and its suppliers’ businesses; IonQ’s ability to implement its business plans, forecasts and other expectations, to identify and realize partnerships and opportunities, and to engage new and existing customers; IonQ’s ability to effectively integrate its acquisitions; its inability to effectively enter new markets; IonQ’s ability to deliver services and products within currently anticipated timelines; its inability to attract and retain key personnel including personnel of acquired companies; the conditions for closing IonQ's anticipated acquisitions not being met; IonQ’s customers deciding or declining to extend contracts into new phases; the inability of its suppliers to deliver components that meet expectations timely; changes in U.S. government spending or policy that may affect IonQ’s customers; changes to U.S. government goals and metrics of success with regard to implementation of quantum computing and quantum networking; and risks associated with U.S. government sales, including availability of funding and provisions that allow the government to unilaterally terminate or modify contracts for convenience. You should carefully consider the foregoing factors and the other risks and uncertainties disclosed in the Company’s filings, including but not limited to those described in the “Risk Factors'' section of IonQ’s most recent periodic financial report (10-Q or 10-K) and other documents filed by IonQ from time to time with the Securities and Exchange Commission. These filings identify and address other important risks and uncertainties that could cause actual events and results to differ materially from those contained in the forward-looking statements. Forward-looking statements speak only as of the date they are made. Readers are cautioned not to put undue reliance on forward-looking statements, and IonQ assumes no obligation and does not intend to update or revise these forward-looking statements, whether as a result of new information, future events, or otherwise. IonQ does not give any assurance that it will achieve its expectations.

IonQ, Inc.

Condensed Consolidated Statements of Operations

(unaudited)

(in thousands, except share and per share data)

IonQ, Inc.

Condensed Consolidated Balance Sheets

(unaudited)

(in thousands)

IonQ, Inc.

Condensed Consolidated Statements of Cash Flows

(unaudited)

(in thousands)

IonQ, Inc.

Reconciliation of Net Loss to Adjusted EBITDA

(unaudited)

(in thousands)

IonQ Media Contact:

Jane Mazur

[email protected]

IonQ Investor Contact:

[email protected]