Sec Form 3 Filing - Bowsher Stephen C @ Chain Bridge I - 2021-11-09

FORM 3 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 Bowsher Stephen C 2. Issuer Name and Ticker or Trading Symbol Chain Bridge I [ CBRG] 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) C/O CHAIN BRIDGE I, 100 EL CAMINO REAL, GROUND SUITE 3. Date of Earliest Transaction (MM/DD/YY) 11/09/2021 (Street) BURLINGAME, CA94010 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 ) ( 1 ) ( 1 ) ( 1 ) Class A Ordinary Shares 4,815,190 ( 1 ) ( 2 ) I By Chain Bridge Group ( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Bowsher Stephen C C/O CHAIN BRIDGE I 100 EL CAMINO REAL, GROUND SUITE BURLINGAME, CA94010 X Signatures /s/ Stephen Bowsher 11/09/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )As described in the Issuer's Registration Statement on Form S-1, as amended (File No. 333-254502) (the "Registration Statement"), under the heading "Description of Securities," the Class B Ordinary Shares will automatically convert into Class A Ordinary Shares of the Issuer at the time of the Issuer's initial business combination and have no expiration date. The shares reported herein include up to 625,714 Class B Ordinary Shares that are subject to forfeiture if the underwriters of the Issuer's initial public offering do not exercise in full their option to purchase additional units, as described in the Registration Statement. ( 2 )Chain Bridge Group (the "Sponsor") is the record holder of the shares reported herein. The Sponsor is governed by three managers (the "Managers"), Michael Rolnick, Stephen Bowsher and Christopher Darby. Each Manager has one vote and the approval of a majority of the Managers is required. Therefore no individual Manager can exercise voting or dispositive control over any of the securities and none of the Managers will be deemed to have or share beneficial ownership of such shares. Each of the Managers expressly disclaims any such beneficial interest to the extent of any pecuniary interest any of them may have therein, directly or indirectly.

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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