Current Report · Items 7.01, 8.01, 9.01 · 8-K

Rigetti Computing, Inc.

RGTINASDAQEQUITYCurrent

Regulation FD Disclosure · Other Events

Filed Apr 7, 2026Accepted Apr 7, 2026, 4:10 PM EDTCIK 1838359Accession 0001104659-26-040377

Company context

Rigetti is a pioneer in full-stack quantum computing. Rigetti quantum computers are based on superconducting qubits, which are widely believed to be the leading qubit modality given their maturity, clear path to scaling, and fast gate speeds. Rigetti quantum computing systems achieve gate speeds of 50-70 nanoseconds, which is about 10,000 times faster than trapped-ion systems and 100 times faster than neutral-atom systems.

Current securities

RGTINASDAQ · EQUITY · Current RGTIWNASDAQ · WARRANT · Current

Historical securities (3)

SNIINYSE_AMERICAN · EQUITY · Historical · closed Mar 2, 2022 SNII.UNNYSE · UNIT · Historical · closed Mar 2, 2022 SNII.WSNYSE · WARRANT · Historical · closed Mar 2, 2022

Recent company filings

Disclosure sections

Items 7.01, 8.01, 9.01

Select an item to read the extracted section. The as-filed document remains the primary evidence.

Item 7.01Item 7.01 - Regulation FD Disclosure

Item 7.01 Regulation FD Disclosure. On April 7, 2026, Rigetti Computing, Inc. (the “Company”) issued a press release announcing the general availability of its 108-qubit system, Cepheus-1-108Q. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (this “Current Report”) and is hereby incorporated by reference. The information included in Item 7.01 of this Current Report (including Exhibit 99.1 hereto) is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to liabilities of that section, and shall not be deemed incorporated by reference into any filing under the Exchange Act or the Securities Act of 1933, as amended, except as expressly set forth by specific reference in such filing.

Item 8.01Item 8.01 - Other Events

Item 8.01 Other Events. On April 7, 2026, the Company announced the Cepheus-1-108Q system deployed through the Rigetti Quantum Cloud Services (QCS®) Platform and Amazon Braket is currently performing at a 99.1% median two-qubit gate fidelity with a gate speed of ~60 ns and a 99.9% median single-gate fidelity.

Filed exhibits (1)

EX-99.1 (by filename) tm2611278d1_ex99-1.htm

EX-99.1 2 tm2611278d1_ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 Rigetti Announces General Availability of 108-Qubit System Cepheus-1-108Q validates Rigetti’s proprietary chiplet-based scaling architecture and is now generally available to Rigetti’s customers and partners via the Rigetti Quantum Cloud Services platform and through Amazon Braket, the quantum computing service by AWS. Berkeley, CA -- Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced the general availability of its 108-qubit quantum computing system, Cepheus™-1-108Q, now accessible to customers and partners via the Rigetti Quantum Cloud Services (QCS®) Platform and through Amazon Braket, the quantum computing service by AWS. Cepheus-1-108Q is Rigetti’s highest qubit-count system to date and the industry’s largest modular quantum computing system, based on Rigetti’s proprietary chiplet-based architecture. The system comprises twelve interconnected 9-qubit chiplets, tripling the number of qubits and chiplets from Rigetti’s previous 36-qubit system, Cepheus-1-36Q. The system is currently performing at a 99.1% median two-qubit gate …

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