Sec Form 4 Filing - Constellation Sponsor GmbH & Co. KG @ Constellation Acquisition Corp I - 2023-01-26

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Constellation Sponsor GmbH & Co. KG 2. Issuer Name and Ticker or Trading Symbol Constellation Acquisition Corp I [ CSTA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 181 WESTCHESTER AVENUE, SUITE 407A 3. Date of Earliest Transaction (MM/DD/YY) 01/26/2023 (Street) PORT CHESTER, NY 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Class B ordinary shares( 1 )( 2 ) ( 1 ) 01/26/2023 S 7,633,750( 2 ) ( 1 ) ( 1 ) Class A Ordinary Shares 7,633,750 ( 1 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Constellation Sponsor GmbH & Co. KG 181 WESTCHESTER AVENUE SUITE 407A PORT CHESTER, NY X Signatures /s/ Martin Weckwerth, authorized signatory 01/30/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The Reporting Person previously held 7,633,750 Class B ordinary shares of the Issuer ("Class B Shares"). The Class B Shares will automatically convert into Class A ordinary shares of the Issuer ("Class A Shares") at a ratio of no less than one-to-one on the first business day following the consummation of the Issuer's initial business combination, with the actual such conversion rate as described in the section entitled "Description of Securities" in the Issuer's Registration Statement on Form S-1 (File No. 333-251974) filed with the Securities and Exchange Commission on January 22, 2021. The Class B Shares have no expiration date. ( 2 )On January 26, 2023, the Reporting Person was liquidated pursuant to applicable law and all 7,633,750 Class B Shares held by the Reporting Person were distributed by operation of law to its sole limited partner, Constellation Sponsor LP, an affiliate of the Issuer.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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