RGTI / Rigetti Computing, Inc. - SEC-Einreichungen, Jahresbericht, Proxy Statement

Rigetti Signs Letter of Intent with U.S. Government for Quantum Computing Research

Exhibit 99.1 Rigetti Signs Letter of Intent with U.S. Government for Quantum Computing Research Rigetti announces that it has signed a letter of intent with the U.S. Department of Commerce for an award of up to $100 million to accelerate R&D projects addressing key technical challenges in scaling and advancing superconducting quantum computers. Berkeley, CA - Rigetti Computing, Inc. (Nasdaq: RGTI)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 20, 2026 RIGETTI COMPUTING, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 20, 2026 RIGETTI COMPUTING, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission Fi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 83-0950636 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.) 775 Heinz Avenue Berkeley, California 94710 (Address of principal executive

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 or ☐ TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT For the transition period from to Commission File Number (001-40140) , RIGETTI COMPUT

Table 1: Newly Registered Securities

Calculation of Filing Fee Tables S-8 Rigetti Computing, Inc. Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Equity Rigetti Computing, Inc. 2022 Equity Incentive Plan Common Stock, $0.0001 par value per share Other 17,806,062

As filed with the Securities and Exchange Commission on May 11, 2026

As filed with the Securities and Exchange Commission on May 11, 2026 Registration No.

Rigetti Computing Reports First Quarter 2026 Financial Results Continued execution driven by 108-qubit system availability, customer deployments, and international expansion

Exhibit 99.1 Rigetti Computing Reports First Quarter 2026 Financial Results Continued execution driven by 108-qubit system availability, customer deployments, and international expansion BERKELEY, Calif., May 11, 2026 - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced financial results for the first quarter en

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2026 RIGETTI COMPUTING, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2026 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission Fi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by R

ARS

2025 Annual Report www.rigetti.com UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission Fi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ______)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

ARTICLE 1 - GENERAL

EXHIBIT 10.1 CERTAIN INFORMATION HAS BEEN REDACTED FROM THIS EXHIBIT IN ACCORDANCE WITH ITEM 601(A)(6) OF REGULATION S-K DUE TO PERSONAL PRIVACY CONCERNS. INFORMATION THAT HAS BEEN SO REDACTED FROM THIS EXHIBIT HAS BEEN MARKED WITH “[***]” TO INDICATE THE OMISSION. SUBLEASE THIS SUBLEASE (the “Sublease”) is made as of April 17, 2026 (the “Effective Date”), by and between CHINOOK THERAPEUTICS, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 17, 2026 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 17, 2026 RIGETTI COMPUTING, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission

Rigetti Announces General Availability of 108-Qubit System

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” o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 7, 2026 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 7, 2026 RIGETTI COMPUTING, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 19, 2026 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 19, 2026 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commission

DESCRIPTION OF SECURITIES

EXHIBIT 4.4 DESCRIPTION OF SECURITIES General Rigetti Computing, Inc. (“we,” “our,” “us,” the “Company” or “Rigetti”) has two classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): common stock, par value $0.0001 per share (the “common stock”), and public warrants, with each whole public warrant exercisable for one share of common

Rigetti Computing Reports Fourth Quarter and Full-Year 2025 Financial Results Demonstrates 99.9% two-qubit gate fidelity at 28 nanosecond gate speed on prototype platform

Exhibit 99.1 Rigetti Computing Reports Fourth Quarter and Full-Year 2025 Financial Results Demonstrates 99.9% two-qubit gate fidelity at 28 nanosecond gate speed on prototype platform BERKELEY, Calif., March 4, 2026 - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the fourth quarter

Legal Name

Exhibit 21.1 Legal Name Jurisdiction of Incorporation Rigetti Intermediate LLC Delaware Rigetti & Co, LLC Delaware Rigetti UK Limited United Kingdom Rigetti Australia Pty Ltd. Australia Rigetti Computing Canada, Inc. Canada Rigetti Computing India Private Limited India

Rigetti Computing, Inc. Non-Employee Director Compensation Policy Effective as of November 25, 2025

Exhibit 10.16 Rigetti Computing, Inc. Non-Employee Director Compensation Policy Effective as of November 25, 2025 Each member of the Board of Directors (the “Board”) who is not also serving as an employee of or consultant to Rigetti Computing, Inc. (the “Company”) or any of its subsidiaries (each such member, an “Eligible Director”) will receive the compensation described in this Non-Employee Dire

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 4, 2026 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 4, 2026 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-401

SECOND AMENDED AND RESTATED BYLAWS RIGETTI COMPUTING, INC. (A DELAWARE CORPORATION)

Exhibit 3.2 SECOND AMENDED AND RESTATED BYLAWS OF RIGETTI COMPUTING, INC. (A DELAWARE CORPORATION) TABLE OF CONTENTS Page Article I OFFICES 1 Section 1. Registered Office 1 Section 2. Other Offices 1 Article II CORPORATE SEAL 1 Section 3. Corporate Seal 1 Article III STOCKHOLDERS’ MEETINGS 1 Section 4. Place of Meetings 1 Section 5. Annual Meetings 1 Section 6. Special Meetings 5 Section 7. Notice

Rigetti Announces Order for a 108-Qubit Quantum Computer from India’s Centre for Development of Advanced Computing (C-DAC)

Exhibit 99.1 Rigetti Announces Order for a 108-Qubit Quantum Computer from India’s Centre for Development of Advanced Computing (C-DAC) BERKELEY, Calif., (GLOBE NEWSWIRE) - Rigetti Computing India P L, a wholly owned subsidiary of Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that it has received an $8.4 mi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 20, 2026 RIGETTI COMPUTIN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 20, 2026 RIGETTI COMPUTING, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissio

Rigetti Computing Provides Update on 108-Qubit System

Exhibit 99.1 Rigetti Computing Provides Update on 108-Qubit System Berkeley, California - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that it is revising its roadmap and adjusting the date for general availability of its 108-qubit quantum computing system, Cepheus™-1-108Q. Cepheus-1-108Q is now expected t

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 9, 2026 RIGETTI COMPUTING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 9, 2026 RIGETTI COMPUTING, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 or ☐ TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT For the transition period from to Commission File Number (001-40140) , RIGETTI CO

Rigetti Computing Reports Third Quarter 2025 Financial Results; Provides Technology Roadmap Updates for 2026 and 2027

Exhibit 99.1 Rigetti Computing Reports Third Quarter 2025 Financial Results; Provides Technology Roadmap Updates for 2026 and 2027 BERKELEY, Calif., November 10, 2025 (GLOBE NEWSWIRE) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the third quarter ended September 30, 2025. Third

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 10, 2025 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 10, 2025 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissi

144

144 0001913235 XXXXXXXX LIVE 0001838359 Rigetti Computing, Inc. 001-40140 775 HEINZ AVENUE BERKELEY CA 94710 (510) 210-5550 Sandford Helene Gail Director Common Stock Piper Sandler & Co Inc 350 N 5th St Ste 1000 Minneapolis MN 55401 17635 436289.90 324165170 09/19/2025 Nasdaq Common Stock 06/01/2024 Compensation Issuer N 17635 06/01/2024 NA N Gail Sandford C/O Rigetti Computing Inc 775 Heinz Ave B

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144 0001827853 XXXXXXXX LIVE 0001838359 Rigetti Computing, Inc. 001-40140 775 HEINZ AVENUE BERKELEY CA 94710 (510) 210-5550 Clifton Michael S. Director Warrants Piper Sandler & Co Inc 350 N 5th St Ste 1000 Minneapolis MN 55401 100000 896000.00 324165170 09/17/2025 Nasdaq Warrants 03/02/2022 Sponsor Promote Warrants Issuer N 100000 03/02/2022 NA N Michael Clifton C/O Rigetti Computing Inc 775 Heinz

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144 0001913235 XXXXXXXX LIVE 0001838359 Rigetti Computing, Inc. 001-40140 775 HEINZ AVENUE BERKELEY CA 94710 (510) 210-5550 Sandford Helene Gail Director Common Stock Piper Sandler & Co Inc 350 N 5th St Ste 1000 Minneapolis MN 55401 25000 417250.00 324165170 09/12/2025 Nasdaq Common Stock 06/10/2025 Compensation Issuer N 25000 06/10/2025 NA Y 09/12/2025 06/12/2025 Alex Johnson, a duly authorized r

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144 0001684685 XXXXXXXX LIVE 0001838359 Rigetti Computing, Inc. 001-40140 775 HEINZ AVENUE BERKELEY CA 94710 (510) 210-5550 Johnson Ray O Director Common Stock Piper Sandler & Co Inc 350 N 5th St Ste 1000 Minneapolis MN 55401 126295 2107863.55 324165170 09/12/2025 Nasdaq Common Stock 06/10/2023 Compensation Issuer N 126295 06/10/2023 NA N Ray O Johnson C/O Rigetti Computing Inc 775 Heinz Ave Berke

144

144 0001827853 XXXXXXXX LIVE 0001838359 Rigetti Computing, Inc. 001-40140 775 HEINZ AVENUE BERKELEY CA 94710 (510) 210-5550 Clifton Michael S. Director Common Stock Piper Sandler & Co Inc 350 N 5th St Ste 1000 Minneapolis MN 55401 50000 834500.00 324165170 09/12/2025 Nasdaq Warrants Piper Sandler & Co Inc 350 N 5th St Ste 1000 Minneapolis MN 55401 28812 180651.24 324165170 09/12/2025 Nasdaq Common

144

144 0001339297 XXXXXXXX LIVE 0001838359 Rigetti Computing, Inc. 001-40140 775 HEINZ AVENUE BERKELEY CA 94710 (510) 210-5550 Iannotti Thomas J Director Common Stock Piper Sandler & Co Inc 350 N 5th St Ste 1000 Minneapolis MN 55401 100000 1669000.00 324165170 09/12/2025 Nasdaq Common Stock 09/12/2025 Stock Option Exercise Issuer N 100000 09/12/2025 Cash N Thomas Iannotti C/O Rigetti Computing Inc 77

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144 0001827853 XXXXXXXX LIVE 0001838359 Rigetti Computing, Inc. 001-40140 775 HEINZ AVENUE BERKELEY CA 94710 (510) 210-5550 Clifton Michael S. Director Common Stock Piper Sandler & Co Inc 350 N 5th St Ste 1000 Minneapolis MN 55401 125000 183750.00 324165170 09/09/2025 Nasdaq Warrants Piper Sandler & Co Inc 350 N 5th St Ste 1000 Minneapolis MN 55401 21118 118260.80 324165170 09/09/2025 Nasdaq Commo

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 2, 2025 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 2, 2025 RIGETTI COMPUTING, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissi

Rigetti and India’s Centre for Development of Advanced Computing Announce MOU to Explore Co-Development of Hybrid Quantum Computing Systems

Exhibit 99.1 Rigetti and India’s Centre for Development of Advanced Computing Announce MOU to Explore Co-Development of Hybrid Quantum Computing Systems BERKELEY, Calif., Sept. 2, 2025 (GLOBE NEWSWIRE) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that it has signed a Memorandum of Understanding (MOU) wit

Rigetti Computing Reports Second Quarter 2025 Financial Results; Announces General Availability of its 36-Qubit Multi-Chip Quantum Computer

Exhibit 99.1 Rigetti Computing Reports Second Quarter 2025 Financial Results; Announces General Availability of its 36-Qubit Multi-Chip Quantum Computer BERKELEY, Calif., August 12, 2025 (GLOBE NEWSWIRE) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the second quarter ended June

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents x UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2025 RIGETTI COMPUTING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2025 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2025 RIGETTI COMPUTING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2025 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 16, 2025 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 16, 2025 RIGETTI COMPUTING, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 11, 2025 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 11, 2025 RIGETTI COMPUTING, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission F

Rigetti Computing Completes $350 Million At-the-Market Equity Offering

Exhibit 99.1 Rigetti Computing Completes $350 Million At-the-Market Equity Offering Berkeley, CA - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that it has completed sales of $350 million gross proceeds of its common stock pursuant to its previously disclosed at-the-market equity offering program. With thi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2025 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2025 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commission F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 29, 2025 RIGETTI COMPUTING, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 29, 2025 RIGETTI COMPUTING, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission Fi

Up to $350,000,000 Common Stock

TABLE OF CONTENTS  Filed pursuant to Rule 424(b)(5)  Registration No. 333-287646 PROSPECTUS SUPPLEMENT (To prospectus dated May 29, 2025) Up to $350,000,000 Common Stock We have entered into an Open Market Sales AgreementSM with Jefferies LLC, dated May 29, 2025 (the “Sales Agreement”), relating to shares of our common stock, $0.0001 par value per share, offered by this prospectus supplement and t

Calculation of Filing Fee Tables Form 424(b)(5) (Form Type) Rigetti Computing, Inc. (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Tables Form 424(b)(5) (Form Type) Rigetti Computing, Inc.

Open Market Sale AgreementSM, by and between Rigetti Computing, Inc., and Jefferies LLC dated May 29, 2025.

Exhibit 1.1 OPEN MARKET SALE AGREEMENTSM May 29, 2025 JEFFERIES LLC 520 Madison Avenue New York, New York 10022 Ladies and Gentlemen: Rigetti Computing, Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell from time to time through Jefferies LLC, as sales agent and/or principal (the “Agent”), shares of the Company’s common sto

Form of Indenture

Exhibit 4.4 Rigetti Computing, Inc., Issuer AND [TRUSTEE], Trustee INDENTURE Dated as of [•], 20 Debt Securities Table Of Contents Page ARTICLE 1 DEFINITIONS 1 Section 1.01 Definitions of Terms 1 ARTICLE 2 ISSUE, DESCRIPTION, TERMS, EXECUTION, REGISTRATION AND EXCHANGE OF SECURITIES 5 Section 2.01 Designation and Terms of Securities 5 Section 2.02 Form of Securities and Trustee’s Certificate 8 Sec

As filed with the U.S. Securities and Exchange Commission on May 29, 2025

TABLE OF CONTENTS As filed with the U.S. Securities and Exchange Commission on May 29, 2025 Registration No. 333-       UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 88-0950636 (State or other jurisdiction of incorporatio

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Rigetti Computing, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 83-0950636 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.) 775 Heinz Avenue Berkeley, California 94710 (Address of principal executive

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

As filed with the Securities and Exchange Commission on May 12, 2025

As filed with the Securities and Exchange Commission on May 12, 2025 Registration No.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 12, 2025 RIGETTI COMPUTING, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 12, 2025 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission Fi

Rigetti Computing Reports First Quarter 2025 Financial Results

Exhibit 99.1 Rigetti Computing Reports First Quarter 2025 Financial Results BERKELEY, Calif., May 12, 2025 (GLOBE NEWSWIRE) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the first quarter ended March 31, 2025. First Quarter 2025 and Recent Financial Highlights ● Total revenues fo

Non-Employee Director Compensation Policy

Exhibit 10.3 RIGETTI COMPUTING, INC. NON-EMPLOYEE DIRECTOR COMPENSATION POLICY EFFECTIVE AS OF APRIL 1, 2025 Each member of the Board of Directors (the “Board”) who is not also serving as an employee of or consultant to Rigetti Computing, Inc. (the “Company”) or sany of its subsidiaries (each such member, an “Eligible Director”) will receive the compensation described in this Non-Employee Director

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT For the transition period from to Commission File Number (001-40140) , RIGETTI COMPUT

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) Rigetti Computing, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by R

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ______)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

ARS

2024 Annual Report www.rigetti.com UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10 - K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 27, 2025 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 27, 2025 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commission

Amendment No. 1 to the Lease Agreement dated April 15, 2015, by and among Rigetti, Temescal, LP and Contra Costa Industrial Park, Ltd.

Exhibit 10.25 AMENDMENT NO. 1 TO STANDARD INDUSTRIAL/COMMERCIAL MULTI-TENANT LEASE – GROSS This Amendment No. 1 to Standard Industrial/Commercial Multi-Tenant Lease – Gross (this “Amendment No. 1”) is entered into as of May 11, 2017, by and between Temescal, LP, a California limited partnership and Contra Costa Industrial Park, II, a California limited partnership (collectively, “Lessor”) and Rige

Fifth Amendment to the Lease Agreement dated August 9, 2016 by and between Rigetti and Prologis Limited Partnership I.

Exhibit 10.21 FOURTH AMENDMENT TO LEASE AGREEMENT THIS FOURTH AMENDMENT TO LEASE AGREEMENT (this “Amendment”) is entered into as of 12 July 2021, by and between Prologis Limited Partnership I, a Delaware limited partnership, (“Landlord”) and Rigetti & Co, Inc., a Delaware corporation (“Tenant”). W I T N E S S E T H: WHEREAS, Landlord and Tenant have entered into a Lease dated August 9, 2016, as fu

Sixth Amendment to the Lease Agreement dated August 9, 2016 by and between Rigetti and Prologis Limited Partnership I.

Exhibit 10.22 SIXTH AMENDMENT TO LEASE AGREEMENT THIS SIXTH AMENDMENT TO LEASE AGREEMENT (this “Amendment”) is entered into as of 16 May 2022, by and between Prologis Limited Partnership I (“Landlord”) and Rigetti & Co, LLC, a Delaware limited liability company (“Tenant”). W I T N E S S E T H: WHEREAS, Landlord and Tenant’s predecessor in interest have entered into a Lease dated August 9, 2016, as

Third Amendment to the Lease Agreement dated August 9, 2016 by and between Rigetti and Prologis Limited Partnership I.

Exhibit 10.34 THIRD AMENDMENT TO LEASE AGREEMENT THIS THIRD AMENDMENT TO LEASE AGREEMENT (this “Amendment”) is entered into as of Oct 8, 2020, by and between Prologis Limited Partnership I (“Landlord”) and Rigetti & Co, Inc., a Delaware corporation (“Tenant”). W I T N E S S E T H: WHEREAS, Landlord and Tenant have entered into a Lease dated August 9, 2016, pursuant to which Landlord leased to Tena

Amendment No. 2 to the Lease Agreement dated April 15, 2015, by and among Rigetti, Temescal, LP and Contra Costa Industrial Park, Ltd.

Exhibit 10.26 AMENDMENT NO. 2 TO STANDARD INDUSTRIAL/COMMERCIAL MULTI-TENANT LEASE-GROSS This Amendment No. 2 to Standard Industrial/Commercial Multi-Tenant Lease – Gross (this “Amendment No. 2”) is entered into as of March 29, 2018, by and between Temescal, LP, a California limited partnership and Contra Costa Industrial Park, 11, a California limited partnership (collectively, “Lessor”) and Rige

First Amendment to the Lease Agreement dated August 9, 2016 by and between Rigetti and Prologis Limited Partnership I.

Exhibit 10.18 FIRST AMENDMENT TO LEASE AGREEMENT THIS FIRST AMENDMENT TO LEASE AGREEMENT (this “Amendment”) is entered into as of May 9, 2019, by and between ProLogis Limited Partnership I (“Landlord”) and Rigetti & Co., Inc., a Delaware corporation (“Tenant”). W I T N E S S E T H: WHEREAS, Prologis and Tenant have entered into a Lease dated August 9, 2016, pursuant to which Landlord leased to Ten

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-401

Insider Trading Policy

Exhibit 19.1 Rigetti Computing, Inc. Insider Trading Policy Policy Principles During the course of your relationship with Rigetti Computing, Inc. (the “Company”), you may receive material information that is not yet publicly available (“material nonpublic information”) about the Company or other publicly traded companies that the Company has business relationships with. Material nonpublic informat

List of Subsidiaries of Rigetti Computing, Inc.

Exhibit 21.1 Legal Name Jurisdiction of Incorporation Rigetti Intermediate LLC Delaware Rigetti & Co, LLC Delaware Rigetti UK Limited United Kingdom Rigetti Australia Pty Ltd. Australia Rigetti Computing Canada, Inc. Canada Rigetti Computing India Private Limited India

Fourth Amendment to the Lease Agreement dated August 9, 2016 by and between Rigetti and Prologis Limited Partnership I.

Exhibit 10.20 THIRD AMENDMENT TO LEASE AGREEMENT THIS THIRD AMENDMENT TO LEASE AGREEMENT (this “Amendment”) is entered into as of 03 June 2021, by and between ProLogis Limited Partnership I (“Landlord”) and Rigetti & Co, Inc., a Delaware corporation (“Tenant”). W I T N E S S E T H: WHEREAS, Prologis Limited Partnership I and Tenant have entered into a Lease dated , pursuant to which Landlord lease

Second Amendment to the Lease Agreement dated August 9, 2016 by and between Rigetti and Prologis Limited Partnership I.

Exhibit 10.19 SECOND AMENDMENT TO LEASE AGREEMENT THIS SECOND AMENDMENT TO LEASE AGREEMENT (this “Amendment”) is entered into as of 30 July 2020, by and between Prologis Limited Partnership I (“Landlord”) and Rigetti & Co, Inc., a Delaware corporation (“Tenant”). W I T N E S S E T H: WHEREAS, Landlord and Tenant have entered into a Lease dated August 9, 2016, pursuant to which Landlord leased to T

Notice of Option to Extend Lease Term to the Lease Agreement dated April 15, 2015, by and among Rigetti, Temescal, LP and Contra Costa Industrial Park, Ltd.

Exhibit 10.27 Rigetti & Co, LLC 775 Heinz Avenue Berkeley CA 94710 July 28, 2022 Hall Equities Group 150 North Wiget Lane, Suite 250 Walnut Creek CA 94598 c/o Nick Zankich Director of leasing With a copy via email: [email protected] Re: Notice of Exercise of Option to Extend Lease Term Dear Nick: This letter serves as notice of exercise of the option to extend the lease term by Rigetti &

Rigetti Computing Reports Fourth Quarter and Full-Year 2024 Results

Exhibit 99.1 Rigetti Computing Reports Fourth Quarter and Full-Year 2024 Results BERKELEY, Calif., March 5, 2025 (GLOBE NEWSWIRE) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the fourth quarter and year ended December 31, 2024. Fourth Quarter and Full-Year 2024 Financial Highlig

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 5, 2025 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 5, 2025 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission F

Rigetti Computing Announces Strategic Collaboration Agreement with Quanta Computer to Accelerate Development and Commercialization of Superconducting Quantum Computing

Exhibit 99.1 Rigetti Computing Announces Strategic Collaboration Agreement with Quanta Computer to Accelerate Development and Commercialization of Superconducting Quantum Computing Berkeley, CA, February 27, 2025 (GLOBE NEWSWIRE) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that it has entered into a str

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 28, 2025 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 28, 2025 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissi

Collaboration Agreement, dated as of February 27, 2025, by and between Rigetti & Co, LLC and Quanta Computer Inc.

Exhibit 10.1 Certain information has been excluded from this exhibit (indicated by “[***]”) because such information is both (i) not material and (ii) the type that the company treats as private or confidential. Execution version COLLABORATION Agreement This Collaboration Agreement (this “Agreement”) is entered into as of February 27, 2025 (the “Effective Date”), between Rigetti & Co, LLC, a Delaw

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2025 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 27, 2025 RIGETTI COMPUTING, INC. (Exact Name of Registrant as Specified in its Charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissi

Securities Purchase Agreement, dated as of February 27, 2025, by and between Rigetti Computing, Inc. and Quanta Computer Inc.

Exhibit 10.2 Certain information has been excluded from this exhibit (indicated by “[***]”) because such information is both (i) not material and (ii) the type that the company treats as private or confidential. EXECUTION VERSION SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of February 27, 2025, between Rigetti Computing, Inc., a Delaware corporat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 24, 2025 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 24, 2025 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commissi

RGTI / Rigetti Computing, Inc. / American Assets Investment Management, LLC

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 9, 2024 RIGETTI COMPUTIN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 9, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commissio

RGTI / Rigetti Computing, Inc. / CVI Investments, Inc. - SC 13G Passive Investment

CUSIP No: 76655K103 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2. (Amendment No. )* Rigetti Computing, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 76655K103 (CUSIP Numb

Limited Power of Attorney

Exhibit I LIMITED POWER OF ATTORNEY THIS LIMITED POWER OF ATTORNEY given on the 16th day of July, 2015 by CVI Investments, Inc.

Joint Filing Agreement

EX-99.II 3 tm2430033d1ex99-ii.htm EXHIBIT II EXHIBIT II JOINT FILING AGREEMENT This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the shares of common stock of Rigetti Computing, Inc., $0.0001 par value per share, is being file

50,000,000 Shares of Common Stock

TABLE OF CONTENTS  Filed pursuant to Rule 424(b)(5)  Registration No. 333-275988 PROSPECTUS SUPPLEMENT (To Prospectus dated December 19, 2023) 50,000,000 Shares of Common Stock Pursuant to this prospectus supplement and the accompanying prospectus, we are offering in a registered direct offering to certain purchasers 50,000,000 shares of our common stock, par value $0.0001 per share at a purchase

RGTI / Rigetti Computing, Inc. / Deer X & Co. L.P. - SC 13D/A Activist Investment

SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 2)* RIGETTI COMPUTING, INC. (Name of Issuer) Common Stock (Class of Securities) 76655K 103 (CUSIP Number) Bessemer Venture Partners 1865 Palmer Avenue, Suite 104 Larchmont, NY 10528 (914) 833-5300 (Name, Address and Telephone Number of Person Authorized to Receiv

Form of Securities Purchase Agreement, by and among Rigetti Computing, Inc. and the Purchasers

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of November 26, 2024, between Rigetti Computing, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively, the “Purchasers”). WHEREAS, subject to the terms and condit

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 26, 2024 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 26, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commissi

Rigetti Computing Announces Pricing of $100 Million Registered Direct Offering of Common Stock Priced At-The-Market Under Nasdaq Rules

Filed pursuant to Rule 433 Issuer Free Writing Prospectus Registration Statement No.

Rigetti Announces Successful Completion of $100 Million At-the-Market Equity Offering

Exhibit 99.1 Rigetti Announces Successful Completion of $100 Million At-the-Market Equity Offering BERKELEY, Calif., Nov. 25, 2024 (GLOBE NEWSWIRE) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that it has successfully completed sales of $100 million gross proceeds of its common stock pursuant to its prev

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 25, 2024 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 25, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissi

RGTI / Rigetti Computing, Inc. / Deer X & Co. L.P. - SC 13D/A Activist Investment

SC 13D/A 1 d844070dsc13da.htm SC 13D/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 1)* RIGETTI COMPUTING, INC. (Name of Issuer) Common Stock (Class of Securities) 76655K 103 (CUSIP Number) Bessemer Venture Partners 1865 Palmer Avenue, Suite 104 Larchmont, NY 10528 (914) 833-5300 (Name, Address and Telephone Number

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 12, 2024 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 12, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT For the transition period from to Commission File Number (001-40140) , RIGETTI CO

Rigetti Computing Reports Third Quarter 2024 Financial Results and Business Updates

Exhibit 99.1 Rigetti Computing Reports Third Quarter 2024 Financial Results and Business Updates BERKELEY, Calif., November 12, 2024 - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the third quarter ended September 30, 2024 and business updates, including updates to its technology

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2024 RIGETTI COMPUTIN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissio

Transition Services Agreement, by and between Rick Danis and Rigetti Computing, Inc. , dated as of November 6, 2024.

Exhibit 10.1 Rigetti Computing, Inc. 775 Heinz Avenue Berkeley CA 94710 November 6, 2024 Via E-mail Rick Danis [email protected] Re: Transition Services Dear Rick: As discussed, following your resignation effective on November 30, 2024 or such other date as may be agreed by the parties (the “Effective Date”), you agree to provide consulting services (the “Services”) to assist in the transition of y

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissio

Amendment No. 3, dated as of September 20, 2024, to Standard Industrial/Commercial Multi-Tenant Lease – Gross dated as of April 15, 2015,

Exhibit 10.1 AMENDMENT NO. 3 TO STANDARD INDUSTRIAL/COMMERCIAL MULTI-TENANT LEASE – GROSS This Amendment No. 3 to Standard Industrial/Commercial Multi-Tenant Lease – Gross (this “Amendment No. 3”) is entered into as of September 20, 2024, by and between Temescal, LP, a California limited partnership and Contra Costa Industrial Park, II, a California limited partnership (collectively, “Lessor”) and

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 24, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commiss

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 16, 2024 RIGETTI COMPUT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 16, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commiss

Rigetti Computing Reports Second Quarter 2024 Financial Results

Exhibit 99.1 Rigetti Computing Reports Second Quarter 2024 Financial Results BERKELEY, Calif., Aug. 8, 2024 (GLOBE NEWSWIRE) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the second quarter ended June 30, 2024. Second Quarter 2024 Financial Highlights ● Total revenues for the thr

Seventh Amendment to Lease Agreement dated August 9, 2016 by and between Rigetti and Prologis Limited Partnership I

Exhibit 10.2 SEVENTH AMENDMENT TO LEASE AGREEMENT THIS SEVENTH AMENDMENT TO LEASE AGREEMENT (this "Amendment") is entered into as of June 14, 2024, by and between PROLOGIS LIMITED PARTNERSHIP I ("Landlord"), and RIGETTI & CO, LLC ("Tenant"). WITNESSTH: WHEREAS, Landlord and Tenant are parties to a certain Lease Agreement dated August 9, 2016 (as heretofore amended, the “Lease”), pursuant to which

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 8, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT For the transition period from to Commission File Number (001-40140) , RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2024 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commission F

Amended and Restated Loan and Security Agreement by and between Trinity Capital Inc., as lender, and Rigetti & Co, LLC, Rigetti Intermediate LLC and Rigetti Computing Inc., as borrowers.

EX-10.1 Exhibit 10.1 Execution Version AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT DATED AS OF June 21, 2024 between TRINITY CAPITAL INC. and RIGETTI & CO, LLC, RIGETTI INTERMEDIATE LLC and RIGETTI COMPUTING, INC. AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT THIS AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT is made as of June 21, 2024 (the “Closing Date”), by and between TRINITY CAPIT

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 18, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commission F

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 83-0950636 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.) 775 Heinz Avenue Berkeley, California 94710 (Address of principal executive

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 9, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission Fil

Rigetti Computing Reports First Quarter 2024 Financial Results

Exhibit 99.1 Rigetti Computing Reports First Quarter 2024 Financial Results BERKELEY, Calif., May 9, 2024 (GLOBE NEWSWIRE) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the first quarter ended March 31, 2024. First Quarter 2024 Financial Highlights ● Total revenues for the three

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT For the transition period from to Commission File Number (001-40140) RIGETTI COMPUTIN

Non-Employee Director Compensation Policy

Exhibit 10.2 RIGETTI COMPUTING, INC. NON-EMPLOYEE DIRECTOR COMPENSATION POLICY EFFECTIVE AS OF OCTOBER 30, 2023 Each member of the Board of Directors (the “Board”) who is not also serving as an employee of or consultant to Rigetti Computing, Inc. (the “Company”) or any of its subsidiaries (each such member, an “Eligible Director”) will receive the compensation described in this Non-Employee Direct

ARS

2023 Annual Report www.rigetti.com UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission Fi

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

Table of Contents SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

Table of Contents SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

As filed with the Securities and Exchange Commission on April 2, 2024

S-8 As filed with the Securities and Exchange Commission on April 2, 2024 Registration No.

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) Rigetti Computing, Inc.

Up to $100,000,000 Common Stock

424B5 Table of Contents Filed pursuant to Rule 424(b)(5) Registration No. 333-275988 PROSPECTUS SUPPLEMENT (To Prospectus dated December 19, 2023) Up to $100,000,000 Common Stock We entered into a sales agreement dated March 15, 2024 (the “Sales Agreement”) with Needham & Company, LLC and B. Riley Securities, Inc. (each, a “Sales Agent” and together, the “Sales Agents”), relating to the issuance a

Sales Agreement, by and among Rigetti Computing, Inc, Needham & Company, LLC and B. Riley Securities, Inc., dated March 15, 2024

EX-1.1 Exhibit 1.1 Execution Version Rigetti Computing, Inc. Shares of Common Stock SALES AGREEMENT March 15, 2024 B. RILEY SECURITIES, INC.  299 Park Avenue, 21st Floor  New York, NY 10171 NEEDHAM & COMPANY, LLC  250 Park Avenue  New York, New York 10177 Ladies and Gentlemen: Rigetti Computing, Inc., a Delaware corporation (the “Company”), confirms as follows its agreements with B. Riley Securiti

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 15, 2024 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 15, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commission

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-401

Rigetti Computing, Inc. Non-Employee Director Compensation Policy Effective as of October 30, 2023

Exhibit 10.22 Rigetti Computing, Inc. Non-Employee Director Compensation Policy Effective as of October 30, 2023 Each member of the Board of Directors (the “Board”) who is not also serving as an employee of or consultant to Rigetti Computing, Inc. (the “Company”) or any of its subsidiaries (each such member, an “Eligible Director”) will receive the compensation described in this Non-Employee Direc

Rigetti Computing Reports Fourth Quarter and Full Year 2023 Results

Exhibit 99.1 Rigetti Computing Reports Fourth Quarter and Full Year 2023 Results ● Deployed the 84-qubit Ankaa™-2 quantum computer, with a 2.5X improvement in error performance compared to the Company’s previous QPUs and achieved a 98% median 2-qubit fidelity. ● Won competition to develop and deliver a 24-qubit quantum computing system to the UK’s National Quantum Computing Centre (NQCC). ● Launch

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2024 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 14, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission

Incentive Compensation Recoupment Policy

Exhibit 97.1 Rigetti Computing, Inc. Incentive Compensation Recoupment Policy 1.Introduction The Compensation Committee (the “Compensation Committee”) of the Board of Directors (the “Board”) of Rigetti Computing, Inc., a Delaware corporation (the “Company”), has determined that it is in the best interests of the Company and its shareholders to adopt this Incentive Compensation Recoupment Policy (t

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 22, 2024 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 22, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commissi

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 14, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commissi

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 5, 2024 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commissio

23,648,889 SHARES OF COMMON STOCK

Table of Contents Filed pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS 23,648,889 SHARES OF COMMON STOCK This prospectus relates to the offer and resale of up to 23,648,889 shares of our common stock, $0.0001 per share (the “common stock”), by B. Riley Principal Capital II, LLC (“B. Riley” or the “selling stockholder”). The shares included in this prospectus consist of shares of

As filed with the U.S. Securities and Exchange Commission on December 22, 2023

Table of Contents As filed with the U.S. Securities and Exchange Commission on December 22, 2023 Registration No. 333-266938 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 2 TO FORM S-1 ON FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 7374

Power of Attorney of Thomas Iannotti.

Exhibit 24.2 POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Dr. Subodh Kulkarni, Jeffrey Bertelsen and Rick Danis, and each of them, as his or her true and lawful agents, proxies and attorneys-in-fact, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and a

UP TO 500,000 SHARES OF COMMON STOCK

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS UP TO 500,000 SHARES OF COMMON STOCK This prospectus relates to the offer and sale from time to time by Ampere Computing LLC or its permitted transferees (“Ampere” or the “selling stockholder”) of up to 500,000 shares (the “Shares”) of common stock, par value $0.0001 (the “common stock”), of the Company, issu

UP TO 16,763,305 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

Table of Contents Filed pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS UP TO 16,763,305 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus relates to the issuance by us of up to an aggregate of 16,763,305 shares of our common stock, $0.0001 par value per share (the “c

Rigetti Computing, Inc. 775 Heinz Avenue Berkeley, CA 94710

Rigetti Computing, Inc. 775 Heinz Avenue Berkeley, CA 94710 December 18, 2023 VIA EDGAR Division of Corporation Finance Office of Technology United States Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 RE: Rigetti Computing, Inc. Registration Statement on Form S-3 File No. 333-275988 Ladies and Gentlemen: Pursuant to Rule 461 under the Securities Exchange Act of 1933,

LETTER

United States securities and exchange commission logo December 15, 2023 Rick Danis General Counsel Rigetti Computing, Inc.

Form of Indenture

Exhibit 4.4 Rigetti Computing, Inc., Issuer AND [TRUSTEE], Trustee INDENTURE Dated as of [•], 20 Debt Securities TABLE OF CONTENTS PAGE ARTICLE 1 DEFINITIONS 1 Section 1.01 Definitions of Terms 1 ARTICLE 2 ISSUE, DESCRIPTION, TERMS, EXECUTION, REGISTRATION AND EXCHANGE OF SECURITIES 5 Section 2.01 Designation and Terms of Securities 5 Section 2.02 Form of Securities and Trustee’s Certificate 8 Sec

Power of Attorney of Thomas Iannotti

Exhibit 24.2 POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Dr. Subodh Kulkarni, Jeffrey Bertelsen and Rick Danis, and each of them, as his or her true and lawful agents, proxies and attorneys-in-fact, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and a

Form of Preferred Stock Warrant Agreement and Warrant Certificate

Exhibit 4.7 RIGETTI COMPUTING, INC. AND , AS WARRANT AGENT FORM OF PREFERRED STOCK WARRANT AGREEMENT DATED AS OF RIGETTI COMPUTING, INC. FORM OF PREFERRED STOCK WARRANT AGREEMENT THIS PREFERRED STOCK WARRANT AGREEMENT (this “Agreement”), dated as of [•], between RIGETTI COMPUTING, INC., a Delaware corporation (the “Company”), and [•], a [corporation] [national banking association] organized and ex

Power of Attorney of Thomas Iannotti

Exhibit 24.2 POWER OF ATTORNEY KNOW ALL BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Dr. Subodh Kulkarni, Jeffrey Bertelsen and Rick Danis, and each of them, as his or her true and lawful agents, proxies and attorneys-in-fact, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and a

Form of Common Stock Warrant Agreement and Warrant Certificate

Exhibit 4.6 RIGETTI COMPUTING, INC. AND , AS WARRANT AGENT FORM OF COMMON STOCK WARRANT AGREEMENT DATED AS OF RIGETTI COMPUTING, INC. FORM OF COMMON STOCK WARRANT AGREEMENT THIS COMMON STOCK WARRANT AGREEMENT (this “Agreement”), dated as of [•], between RIGETTI COMPUTING, INC., a Delaware corporation (the “Company”), and [•], a [corporation] [national banking association] organized and existing un

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Rigetti Computing, Inc.

As filed with the U.S. Securities and Exchange Commission on December 11, 2023

Table of Contents As filed with the U.S. Securities and Exchange Commission on December 11, 2023 Registration No. 333-266810 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 2 TO FORM S-1 ON FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 7374

Form of Debt Securities Warrant Agreement and Warrant Certificate

Exhibit 4.8 RIGETTI COMPUTING, INC. AND , AS WARRANT AGENT FORM OF DEBT SECURITIES WARRANT AGREEMENT DATED AS OF RIGETTI COMPUTING, INC. FORM OF DEBT SECURITIES WARRANT AGREEMENT THIS DEBT SECURITIES WARRANT AGREEMENT (this “Agreement”), dated as of [•], between RIGETTI COMPUTING, INC., a Delaware corporation (the “Company”), and [•], a [corporation] [national banking association] organized and ex

As filed with the U.S. Securities and Exchange Commission on December 11, 2023

Table of Contents As filed with the U.S. Securities and Exchange Commission on December 11, 2023 Registration No. 333-263798 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 2 TO FORM S-1 ON FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 7374

As filed with the U.S. Securities and Exchange Commission on December 11, 2023

Table of Contents As filed with the U.S. Securities and Exchange Commission on December 11, 2023 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 88-0950636 (State or other jurisdiction of incorporation

23,648,889 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 5 (To Prospectus dated April 14, 2023) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement i

UP TO 500,000 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 5 (To Prospectus dated April 14, 2023) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplemen

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 9, 2023 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissio

Rigetti Computing Reports Third Quarter 2023 Results

Exhibit 99.1 Rigetti Computing Reports Third Quarter 2023 Results Berkeley, CA, November 9, 2023 (Globe Newswire) - Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the third quarter ended September 30, 2023. Third Quarter 2023 Financial Highlights ● Total revenues for the three month

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 5 (To Prospectus dated April 14, 2023) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to d

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT For the transition period from to Commission File Number (001-40140) RIGETTI COMP

Rigetti Computing Appoints Thomas J. Iannotti as Chairman of the Board of Directors

EX-99.1 Exhibit 99.1 Rigetti Computing Appoints Thomas J. Iannotti as Chairman of the Board of Directors Berkeley, CA, October 31, 2023 (Globe Newswire) — Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced that it has appointed Thomas J. Iannotti as Chairman of the Board of Directors, effective immediately. Mr.

UP TO 500,000 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 5 (To Prospectus dated April 14, 2023) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplemen

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 5 (To Prospectus dated April 14, 2023) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to d

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2023 RIGETTI COMPUTIN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2023 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissio

23,648,889 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 5 (To Prospectus dated April 14, 2023) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement i

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 10, 2023 RIGETTI COMPUTING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 10, 2023 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission

Rigetti Computing Reports Second Quarter 2023 Results

Exhibit 99.1 Rigetti Computing Reports Second Quarter 2023 Results ● Completes its first QPU sale to a national lab ● Signs collaboration agreement with ADIA Lab to develop a quantum machine learning solution for probability distribution classification ● Remains on-track to reach year-end technology milestones with fourth generation system ● Riverlane becomes first external partner using the Ankaa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT For the transition period from to Commission File Number (001-40140) RIGETTI COMPUTING

UP TO 500,000 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 4 (To Prospectus dated April 14, 2023) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplemen

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 4 (To Prospectus dated April 14, 2023) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to d

23,648,889 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 4 (To Prospectus dated April 14, 2023) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement i

UP TO 500,000 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 3 (To Prospectus dated April 14, 2023) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus sup

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 12, 2023 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 12, 2023 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission F

23,648,889 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 3 (To Prospectus dated April 14, 2023) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supple

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 3 (To Prospectus dated April 14, 2023) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemente

UP TO 500,000 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 2 (To Prospectus dated April 14, 2023) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus sup

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 15, 2023 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 15, 2023 RIGETTI COMPUTING, INC. (Exact Name of Registrant as Specified in its Charter) Delaware 001-40140 88-0950636 (State or other jurisdiction of incorporation) (Commission F

23,648,889 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 2 (To Prospectus dated April 14, 2023) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supple

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 2 (To Prospectus dated April 14, 2023) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemente

Rigetti Computing Reports First Quarter 2023 Results Fourth Generation Ankaa-1 Chip Demonstrates Median 2-Qubit Gate Fidelity and Gate Speed Improvements Superior to Aspen M-3

EX-99.1 Exhibit 99.1 Rigetti Computing Reports First Quarter 2023 Results Fourth Generation Ankaa-1 Chip Demonstrates Median 2-Qubit Gate Fidelity and Gate Speed Improvements Superior to Aspen M-3 BERKELEY, Calif., May 11, 2023 — Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the fi

23,648,889 SHARES OF COMMON STOCK

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 1 (To Prospectus dated April 14, 2023) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266938). This

UP TO 17,141,926 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 1 (To Prospectus dated April 14, 2023) UP TO 17,141,926 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 20

Separation Agreement for Michael Harburn, dated as of February 15, 2023

EX-10.4 Exhibit 10.4 Rigetti Computing, Inc. February 13, 2023 Mike Harburn 583 Battery Street Apt 2803 Seattle, WA 98121 Dear Mike: As you know, your employment with Rigetti Computing, Inc. (the “Company”) will terminate effective February 15, 2023 (the “Separation Date”) in a reduction in force resulting from the Company’s decision to eliminate and restructure certain positions in order to reduc

UP TO 500,000 SHARES OF COMMON STOCK

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 1 (To Prospectus dated April 14, 2023) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement updates and supplements the prospectus, dated April 14, 2023 (as supplemented to date, the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266810). T

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 RIGETTI COMPUTING, I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission Fi

Separation Agreement for Brian Sereda, dated as of March 28, 2023

EX-10.5 Exhibit 10.5 Rigetti Computing, Inc. February 15, 2023 Brian Sereda 809 Montevino Dr. Pleasanton, CA 94566 Dear Brian: As you know, your employment with Rigetti Computing, Inc. (the “Company”) is terminated effective March 27, 2023 (the “Separation Date”), and we desire to resolve any and all issues relating to your employment and the conclusion of your employment with the Company amicably

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION PURSUANT TO SECT

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT For the transition period from to Commission File Number (001-40140) RIGETTI COMPUTIN

ARS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) È ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ‘ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-40140 RIGETTI COMPUTI

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

TABLE OF CONTENTS SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

UP TO 17,141,926 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS UP TO 17,141,926 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus relates to the issuance by us of up to an aggregate of 17,141,926 shares of our common stock, $0.0001 par value per share (

UP TO 500,000 SHARES OF COMMON STOCK

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS UP TO 500,000 SHARES OF COMMON STOCK This prospectus relates to the offer and sale from time to time by Ampere Computing LLC or its permitted transferees (“Ampere” or the “selling stockholder”) of up to 500,000 shares (the “Shares”) of common stock, par value $0.0001 (the “common stock”), of the Company

SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.)

TABLE OF CONTENTS SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.

23,648,889 SHARES OF COMMON STOCK

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS 23,648,889 SHARES OF COMMON STOCK This prospectus relates to the offer and resale of up to 23,648,889 shares of our common stock, $0.0001 per share (the “common stock”), by B. Riley Principal Capital II, LLC (“B. Riley” or the “selling stockholder”). The shares included in this prospectus consist of sha

Amended and Restated Employment Agreement, dated as of March 2, 2023, between Rigetti Computing, Inc. and David Rivas

EX-10.30 Exhibit 10.30 AMENDED AND RESTATED EXECUTIVE EMPLOYMENT AGREEMENT This AMENDED AND RESTATED EXECUTIVE EMPLOYMENT AGREEMENT dated as of March 2, 2023 (“Agreement”) is by and between David Rivas (“Executive”) and RIGETTI COMPUTING, INC. (the “Company”). WHEREAS, the Executive and the Company executed a certain Executive Employment Agreement on February 2, 2022 (the “Prior Agreement”) and no

As filed with the U.S. Securities and Exchange Commission on April 5 , 2023 Registration No. 333-266810 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER TH

Table of Contents As filed with the U.S. Securities and Exchange Commission on April 5 , 2023 Registration No. 333-266810 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 7374 88-0950636 (St

Amended and Restated Employment Agreement, dated as of March 2, 2023, between Rigetti Computing, Inc. and David Rivas.

EX-10.30 Exhibit 10.30 AMENDED AND RESTATED EXECUTIVE EMPLOYMENT AGREEMENT This AMENDED AND RESTATED EXECUTIVE EMPLOYMENT AGREEMENT dated as of March 2, 2023 (“Agreement”) is by and between David Rivas (“Executive”) and RIGETTI COMPUTING, INC. (the “Company”). WHEREAS, the Executive and the Company executed a certain Executive Employment Agreement on February 2, 2022 (the “Prior Agreement”) and no

As filed with the U.S. Securities and Exchange Commission on April 5 , 2023 Registration No. 333-263798 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER TH

As filed with the U.S. Securities and Exchange Commission on April 5 , 2023 Registration No. 333-263798 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 7374 88-0950636 (State or other juris

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) Rigetti Computing, Inc.

As filed with the U.S. Securities and Exchange Commission on April 5 , 2023 Registration No. 333-266938 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER TH

Table of Contents As filed with the U.S. Securities and Exchange Commission on April 5 , 2023 Registration No. 333-266938 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 7374 88-0950636 (St

Amended and Restated Employment Agreement, dated as of March 2, 2023, between Rigetti Computing, Inc. and David Rivas.

EX-10.30 Exhibit 10.30 AMENDED AND RESTATED EXECUTIVE EMPLOYMENT AGREEMENT This AMENDED AND RESTATED EXECUTIVE EMPLOYMENT AGREEMENT dated as of March 2, 2023 (“Agreement”) is by and between David Rivas (“Executive”) and RIGETTI COMPUTING, INC. (the “Company”). WHEREAS, the Executive and the Company executed a certain Executive Employment Agreement on February 2, 2022 (the “Prior Agreement”) and no

As filed with the Securities and Exchange Commission on April 5, 2023

S-8 As filed with the Securities and Exchange Commission on April 5, 2023 Registration No.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 27, 2023 RIGETTI COMPUTING,

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 27, 2023 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commission

Cautionary Notes Forward Looking Statements: Certain statements in this presentation and may be considered forward-looking statements, including statements with respect to theCompany’s outlook and expectations, including expectations for the planned

EX-99.2 Exhibit 99.2 Investor Presentation March 2023 Cautionary Notes Forward Looking Statements: Certain statements in this presentation and may be considered forward-looking statements, including statements with respect to theCompany’s outlook and expectations, including expectations for the planned development and release of theCompany’s anticipated 84-qubit single chip quantum processors and

Form 10-K

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-401

Rigetti Computing Reports Fourth-Quarter and Full-Year 2022 Results Strategic Focus on Achieving 99% 2-Qubit Median Fidelity on 84 Qubit Chip

EX-99.1 Exhibit 99.1 Rigetti Computing Reports Fourth-Quarter and Full-Year 2022 Results Strategic Focus on Achieving 99% 2-Qubit Median Fidelity on 84 Qubit Chip BERKELEY, Calif., March 27, 2023 — Rigetti Computing, Inc. (Nasdaq: RGTI) (“Rigetti” or the “Company”), a pioneer in full-stack quantum-classical computing, today announced its financial results for the fourth quarter and year ended Dece

Exhibit 4.4

EX-4.4 EXHIBIT 4.4 DESCRIPTION OF SECURITIES General Rigetti Computing, Inc. (“we,” “our,” “us,” the “Company” or “Rigetti”) has two classes of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): common stock, par value $0.0001 per share (the “common stock”), and public warrants, with each whole public warrant exercisable for one share of

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2022 RIGETTI COMPUT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2022 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commiss

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 13 (To Prospectus dated June 1, 2022) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement supplements the prospectus, dated June 1, 2022 (the “Prospectus”), which forms a pa

UP TO 500,000 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 10 (To Prospectus dated August 25, 2022) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated August 25, 2022 (the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplement is being filed to update a

Separation Agreement for Chad Rigetti, dated as of February 14, 2023

Exhibit 10.1 February 14, 2023 Chad Rigetti 1037 21st Street Santa Monica, CA 90403 Dear Chad: As you know, your employment with Rigetti Computing, Inc. (the “Company”) terminated effective December 15, 2022, and we desire to resolve any and all issues relating to your employment and the conclusion of your employment with the Company amicably and on mutually satisfactory terms. Accordingly, this l

23,648,889 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 10 (To Prospectus dated September 14, 2022) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated September 14, 2022 (the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement is being filed to updat

RGTI / Supernova Partners Acquisition Co II Ltd - Class A / Beryl Capital Management LLC Passive Investment

SC 13G/A 1 rigetti13g.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Rigetti Computing, Inc. (Name of Issuer) Common Stock, par value $0.0001 (Title of Class of Securities) 76655K103 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box

23,648,889 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 9 (To Prospectus dated September 14, 2022) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated September 14, 2022 (the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement is being filed to update

Rigetti Computing Announces Updated Strategic Plan to Prioritize Achieving Higher Performance System and Potential Path to Narrow Quantum Advantage

EX-99.1 Exhibit 99.1 Rigetti Computing Announces Updated Strategic Plan to Prioritize Achieving Higher Performance System and Potential Path to Narrow Quantum Advantage • Provides Updated Technology Roadmap; • Appoints Jeffrey Bertelsen as CFO and Promotes David Rivas to CTO; • Implements Workforce Reduction BERKELEY, Calif., Feb. 10, 2023 (GLOBE NEWSWIRE) — Rigetti Computing, Inc. (“Rigetti” or “

RGTI / Supernova Partners Acquisition Co II Ltd - Class A / MILLENNIUM MANAGEMENT LLC Passive Investment

SC 13G/A 1 RGTISC13GA2023.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (AMENDMENT NO. 1) RIGETTI COMPUTING, INC. (formerly Supernova Partners Acquisition Company II, Ltd.) (Name of Issuer) COMMON STOCK, PAR VALUE $0.0001 PER SHARE (Title of Class of Securities) 76655K103 (CUSIP Number) DECEMBER 31, 2022 (Date of

Cautionary Notes Forward Looking Statements: Certain statements in this presentation and may be considered forward-looking statements, including statements with respect to the Company’s outlook and expectations, including expectations for the planned

EX-99.2 • Slide introduces the speaker • Add QA Slide for end of each speaker Exhibit 99.2 Investor Presentation February 2023 Cautionary Notes Forward Looking Statements: Certain statements in this presentation and may be considered forward-looking statements, including statements with respect to the Company’s outlook and expectations, including expectations for the planned development and releas

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 12 (To Prospectus dated June 1, 2022) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement supplements the prospectus, dated June 1, 2022 (the “Prospectus”), which form

Executive Employment Agreement, dated February 9, 2023, by and between Rigetti Computing, Inc. and Jeffrey Bertelsen.

EX-10.1 Exhibit 10.1 EXECUTIVE EMPLOYMENT AGREEMENT This EXECUTIVE EMPLOYMENT AGREEMENT dated as of February 9, 2023 (“Agreement”) is by and between Jeffrey A. Bertelsen (“Executive”) and RIGETTI HOLDINGS, INC. (the “Company”). WHEREAS, the Company desires to employ Executive as Chief Financial Officer (“CFO”) and to provide Executive with certain compensation and benefits in return for Executive’

UP TO 500,000 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 9 (To Prospectus dated August 25, 2022) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated August 25, 2022 (the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplement is being filed to update an

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2023 RIGETTI COMPUTIN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 8, 2023 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissio

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 25, 2023 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissio

23,648,889 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 8 (To Prospectus dated September 14, 2022) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated September 14, 2022 (the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement is being filed to update

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 11 (To Prospectus dated June 1, 2022) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement supplements the prospectus, dated June 1, 2022 (the “Prospectus”), which forms a pa

UP TO 500,000 SHARES OF COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 8 (To Prospectus dated August 25, 2022) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated August 25, 2022 (the “Prospectus”), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplement is being filed to update an

RGTI / Supernova Partners Acquisition Co II Ltd - Class A / Rigetti Chad - AMENDMENT TO FORM SC 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4)* Rigetti Computing, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 76655K 103 (CUSIP Number) Chad Rigetti c/o Rigetti Computing, Inc. 775 Heinz Avenue Berkeley, CA 94710 (510) 210-5550 (Name, Address and Tel

RGTI / Supernova Partners Acquisition Co II Ltd - Class A / Rigetti Chad - AMENDMENT TO FORM SC 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 3)* Rigetti Computing, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 76655K 103 (CUSIP Number) Chad Rigetti c/o Rigetti Computing, Inc. 775 Heinz Avenue Berkeley, CA 94710 (510) 210-5550 (Name, Address and Tel

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

424B3 Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 10 (To Prospectus dated June 1, 2022) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement supplements the prospectus, dated June 1, 2022 (the “Prospectus”), which form

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 15, 2022 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissi

UP TO 500,000 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 7 (To Prospectus dated August 25, 2022) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated August 25, 2022 (the ?Prospectus?), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplement is being filed to update and supp

23,648,889 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 7 (To Prospectus dated September 14, 2022) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated September 14, 2022 (the ?Prospectus?), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement is being filed to update and s

UP TO 500,000 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 6 (To Prospectus dated August 25, 2022) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated August 25, 2022 (the ?Prospectus?), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplement is being filed to update and supp

Executive Employment Agreement, dated December 7, 2022, by and between Rigetti Computing, Inc. and Dr. Subodh Kulkarni.

Exhibit 10.1 EXECUTIVE EMPLOYMENT AGREEMENT This EXECUTIVE EMPLOYMENT AGREEMENT dated as of December 7, 2022 (?Agreement?) is by and between Subodh Kulkarni (?Executive?) and RIGETTI COMPUTING, INC. (the ?Company?). WHEREAS, the Company desires to employ Executive as Chief Executive Officer (?CEO?) and to provide Executive with certain compensation and benefits in return for Executive?s services,

Rigetti Computing Appoints Dr. Subodh Kulkarni as President and Chief Executive Officer Seasoned public company executive with background in the semiconductor industry brings track-record of success in scaling and commercializing cutting-edge technol

Exhibit 99.1 Rigetti Computing Appoints Dr. Subodh Kulkarni as President and Chief Executive Officer Seasoned public company executive with background in the semiconductor industry brings track-record of success in scaling and commercializing cutting-edge technologies BERKELEY, Calif., December 8, 2022 (GLOBE NEWSWIRE) ? Rigetti Computing, Inc. (?Rigetti? or ?the Company?) (NASDAQ: RGTI), a pionee

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 7, 2022 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissio

23,648,889 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 6 (To Prospectus dated September 14, 2022) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated September 14, 2022 (the ?Prospectus?), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement is being filed to update and s

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 9 (To Prospectus dated June 1, 2022) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement supplements the prospectus, dated June 1, 2022 (the ?Prospectus?), which forms a par

23,648,889 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 5 (To Prospectus dated September 14, 2022) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated September 14, 2022 (the ?Prospectus?), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement is being filed to update and s

Interim President and Chief Executive Officer Letter Agreement for Rick Danis, dated as of December 1, 2022

Exhibit 10.1 December 1, 2022 Rick Danis RE: Interim CEO Dear Rick, You have agreed to serve as Interim President and Chief Executive Officer (?Interim CEO?) of Rigetti Computing, Inc. (the ?Company?) during the Company?s search for a successor Chief Executive Officer. This letter agreement (the ?Agreement?) sets forth the terms of your employment as the Company?s Interim CEO. 1. Interim CEO. Duri

UP TO 500,000 SHARES OF COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 5 (To Prospectus dated August 25, 2022) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated August 25, 2022 (the ?Prospectus?), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplement is being filed to update and supp

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 8 (To Prospectus dated June 1, 2022) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement supplements the prospectus, dated June 1, 2022 (the ?Prospectus?), which forms a par

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2022 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incor

UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK

424B3 Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-263798 PROSPECTUS SUPPLEMENT NO. 7 (To Prospectus dated June 1, 2022) UP TO 19,354,059 SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF WARRANTS UP TO 96,941,181 SHARES OF COMMON STOCK UP TO 4,450,000 WARRANTS TO PURCHASE COMMON STOCK This prospectus supplement supplements the prospectus, dated June 1, 2022 (the “Prospec

23,648,889 SHARES OF COMMON STOCK

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-266938 PROSPECTUS SUPPLEMENT NO. 4 (To Prospectus dated September 14, 2022) 23,648,889 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated September 14, 2022 (the ?Prospectus?), which forms a part of our registration statement on Form S-1 (No. 333-266938). This prospectus supplement is being fil

UP TO 500,000 SHARES OF COMMON STOCK

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-266810 PROSPECTUS SUPPLEMENT NO. 4 (To Prospectus dated August 25, 2022) UP TO 500,000 SHARES OF COMMON STOCK This prospectus supplement supplements the prospectus, dated August 25, 2022 (the ?Prospectus?), which forms a part of our registration statement on Form S-1 (No. 333-266810). This prospectus supplement is being filed

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A Amendment No. 1 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ☐ TRANSITIO

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A Amendment No. 1 ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file nu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A Amendment No. 1 ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ☐ TRANSITION

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q/A Amendment No. 1 ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file num

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSU

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-40140

Rigetti Computing Reports Third Quarter 2022 Financial Results

Exhibit 99.1 Rigetti Computing Reports Third Quarter 2022 Financial Results BERKELEY, Calif., Nov. 21, 2022 ? Rigetti Computing, Inc. (Nasdaq: RGTI) (?Rigetti? or the ?Company?), a pioneer in full-stack quantum-classical computing, today announced its financial results and the filing of its Quarterly Report on Form 10-Q for the third quarter and nine months ended September 30, 2022. The Company he

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 21, 2022 RIGETTI COMPUTI

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 21, 2022 RIGETTI COMPUTING, INC. (Exact name of registrant as specified in its charter) Delaware 001-40140 88-0950636 (State or Other Jurisdiction of Incorporation) (Commissi