# EDGAR Filing Document

**Accession Number:** 0001838359
**File Stem:** 0001104659-26-048566
**Filing Date:** 2026-4
**Character Count:** 5836
**Document Hash:** 4311c3d241bbb42e203b70869b1652af
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-048566.hdr.sgml**: 20260424

**ACCESSION NUMBER**: 0001104659-26-048566

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260424

**DATE AS OF CHANGE**: 20260424

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Rigetti Computing, Inc.
- **CENTRAL INDEX KEY:** 0001838359
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER PROGRAMMING SERVICES [7371]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40140
- **FILM NUMBER:** 26893754

**BUSINESS ADDRESS:**
- **STREET 1:** 775 HEINZ AVENUE
- **CITY:** BERKELEY
- **STATE:** CA
- **ZIP:** 94710
- **BUSINESS PHONE:** (510) 210-5550

**MAIL ADDRESS:**
- **STREET 1:** 775 HEINZ AVENUE
- **CITY:** BERKELEY
- **STATE:** CA
- **ZIP:** 94710

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Supernova Partners Acquisition Co II, Ltd.
- **DATE OF NAME CHANGE:** 20201230

**UNITED STATES<br> SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**SCHEDULE 14A**

**Proxy Statement Pursuant to Section 14(a) of<br> the Securities Exchange Act of 1934 (Amendment No. ______)**

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| Filed by the Registrant x | Filed by the Registrant x |
| Filed by a Party other than the Registrant ◻ | Filed by a Party other than the Registrant ◻ |
| Check the appropriate box: | Check the appropriate box: |
| ◻ | Preliminary Proxy Statement |
| ◻ | **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))** |
| ◻ | Definitive Proxy Statement |
| ⌧ | Definitive Additional Materials |
| ◻ | Soliciting Material under §240.14a-12 |
| **RIGETTI COMPUTING, INC.** | **RIGETTI COMPUTING, INC.** |
| (Name of Registrant as Specified In Its Charter) | (Name of Registrant as Specified In Its Charter) |
| (Name of Person(s) Filing Proxy Statement, if other than the Registrant) | (Name of Person(s) Filing Proxy Statement, if other than the Registrant) |
| Payment of Filing Fee (Check the appropriate box): | Payment of Filing Fee (Check the appropriate box): |
| ⌧ | No fee required. |
| ◻ | Fee paid previously with preliminary materials. |
| ◻ | Fee computed in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

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| &nbsp;&nbsp;![GRAPHIC](tm261606d4_defa14aimg001.jpg) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Smartphone users Point your camera here and vote without entering a control number For complete information and to vote, visit www.ProxyVote.com Control # V92692-P48224 Your Vote Counts! \*Please check the meeting materials for any special requirements for meeting attendance. RIGETTI COMPUTING, INC. 775 HEINZ AVENUE BERKELEY, CA 94710 RIGETTI COMPUTING, INC. 2026 Annual Meeting of Stockholders to be held on June 9, 2026 at 9:00 A.M. Pacific Time This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. To view the Notice and Proxy Statement and Annual Report, and to obtain directions to attend the meeting, go to: www.virtualshareholdermeeting.com/RGTI2026. Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the Internet. You invested in RIGETTI COMPUTING, INC. and it's time to vote! Stockholders of record as of the close of business on April 15, 2026 have the right to vote on proposals being presented at the 2026 Annual Meeting of Stockholders. This is an important notice regarding the availability of proxy materials for the 2026 Annual Meeting of Stockholders to be held on June 9, 2026. Vote Virtually at the Meeting\* June 9, 2026 9:00 am Pacific Time Virtually at: www.virtualshareholdermeeting.com/RGTI2026 Get informed before you vote View the Notice of Annual Meeting, Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 26, 2026. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. |

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| &nbsp;&nbsp;![GRAPHIC](tm261606d4_defa14aimg002.jpg) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. THE BOARD OF DIRECTORS RECOMMENDS A VOTE: FOR PROPOSALS 1 AND 2 Vote at www.ProxyVote.com Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click "Delivery Settings". Voting Items Board Recommends V92693-P48224 1. To elect one Class I director to hold office until the 2029 Annual Meeting of Stockholders. Nominee: 1a. Dr. Subodh Kulkarni For 2. To ratify the appointment of BDO USA, P.C. as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026. For NOTE: The proxies are authorized to vote in their discretion on such other business as may properly come before the meeting or any adjournment or postponements thereof. |

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