Sec Form 3 Filing - Simanson Gary A @ Thunder Bridge Capital Partners IV, Inc. - 2021-06-29

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 Simanson Gary A 2. Issuer Name and Ticker or Trading Symbol Thunder Bridge Capital Partners IV, Inc. [ THCPU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 9912 GEORGETOWN PIKE, SUITE D203 3. Date of Earliest Transaction (MM/DD/YY) 06/29/2021 (Street) GREAT FALLS, VA22066 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 Common Stock ( 1 ) ( 1 ) ( 1 ) Class A Common Stock 6,468,750 I See Footnote ( 2 ) ( 3 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Simanson Gary A 9912 GEORGETOWN PIKE SUITE D203 GREAT FALLS, VA22066 X X President and CEO TBCP IV, LLC 9912 GEORGETOWN PIKE SUITE D203 GREAT FALLS, VA22066 X Signatures /s/ Gary A. Simanson 06/29/2021 Signature of Reporting Person Date /s/ Gary A. Simanson Managing Member of TBCP IV, LLC 06/29/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )As described in the registrant's registration statement on Form S-1 (File No. 333-254359) under the heading "Description of Securities--Founder Shares", the Class B common stock will automatically convert into Class A common stock at the time of the issuer's initial business combination, on a one-for-one basis, subject to adjustment for stock splits, stock dividends, reorganizations, recapitalizations and the like, and certain anti-dilution rights and has no expiration date. ( 2 )These shares represent Class B common stock held by TBCP IV, LLC (the "Sponsor") acquired pursuant to a subscription agreement dated as of January 7, 2021 by and between the Sponsor and the registrant. Gary A. Simanson, the President and Chief Executive Officer of the registrant, is the managing member of the Sponsor. Mr. Simanson has sole voting and dispositive control over the shares held by the Sponsor and may be deemed the beneficial owner of such shares. These shares include an aggregate of 843,750 shares that are subject to forfeiture to the extent that the underwriter's do not exercise their overallotment option in connection with the registrant's initial public offering in full. ( 3 )Mr. Simanson may be deemed to beneficially own shares held by the Sponsor by virtue of his control over the Sponsor, as its managing member. Mr. Simanson disclaims beneficial ownership of the common stock held by the Sponsor other than to the extent of his pecuniary interest in such shares.

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).

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