Company: CSTAF
Filing Date: 2025-01-10
Form Type: DEF 14A
Source: 0001213900-25-002661
Chunk: 8

Company: Constellation Acquisition Corp I
Filing Date: 2025-01-10
Form: DEF 14A
Chunk 8
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 OR DELIVERING YOUR SHARES (AND SHARE CERTIFICATES (IF ANY) AND OTHER REDEMPTION FORMS) ELECTRONICALLY USING THE DEPOSITORY TRUST COMPANY’S DWAC (DEPOSIT WITHDRAWAL AT CUSTODIAN) SYSTEM. IF YOU HOLD THE SHARES IN STREET NAME, YOU WILL NEED TO INSTRUCT THE ACCOUNT EXECUTIVE AT YOUR BANK OR BROKER TO WITHDRAW THE SHARES FROM YOUR ACCOUNT IN ORDER TO EXERCISE YOUR REDEMPTION RIGHTS. Enclosed is the proxy statement containing detailed information about the Shareholder Meeting, the Extension Amendment Proposal, the Founder Share Amendment Proposal and the Adjournment Proposal. Whether or not you plan to attend the Shareholder Meeting, Constellation urges you to read this material carefully and vote your shares.

| By Order of the Board of Directors of Constellation Acquisition Corp I |
| /s/ Chandra R. Patel                                                   |
| Chandra R. Patel                                                       |
| Chairman of the Board of Directors                                     |

CONSTELLATION ACQUISITION CORP I 200 Park Avenue, 32 nd Floor
New York, NY 10166 NOTICE OF AN EXTRAORDINARY GENERAL MEETING OF SHAREHOLDERS
OF CONSTELLATION ACQUISITION CORP I
TO BE HELD ON JANUARY 27 , 2025 To the Shareholders of Constellation Acquisition Corp I: NOTICE IS HEREBY GIVEN that an extraordinary general meeting of Constellation Acquisition Corp I, a Cayman Islands exempted company (“ Constellation” or the “ Company”), will be held on January27, 2025, at 1:30 p.m., Eastern Time (the “ Shareholder Meeting”), at the offices of Kirkland & Ellis LLP located at 601 Lexington Avenue, New York, NY 10022, and via a virtual meeting, or at such other time, on such other date and at such other place to which the meeting may be postponed or adjourned. The Shareholder Meeting will be conducted via live webcast, but the physical location of the Shareholder Meeting will remain at the location specified above for the purposes of our amended and restated memorandum and articles of association (the “ Memorandum and Articles of Association”). If you wish to attend the Shareholder Meeting in person, you must reserve your attendance at least two business days in advance of the Shareholder Meeting by contacting Constellation’s Chief Executive Officer at ir@constellationacquisition.com by 1:30 p.m., Eastern Time, on January23, 2025