Sec Form 4 Filing - Simanson Gary A @ Thunder Bridge Acquisition II, LTD - 2021-06-10

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 Simanson Gary A 2. Issuer Name and Ticker or Trading Symbol Thunder Bridge Acquisition II, LTD [ THBR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) See Remarks (Last) (First) (Middle) 717 KING STREET 3. Date of Earliest Transaction (MM/DD/YY) 06/10/2021 (Street) ALEXANDRIA, VA22314 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 Class A Ordinary Shares 06/10/2021 C 100,000 D 0 D ( 2 )

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 ( 3 ) 06/10/2021 C 8,625,000 ( 3 ) ( 3 ) Class A Ordinary Shares 8,625,000 ( 3 ) 0 ( 4 ) I ( 5 ) See Footnote (5)

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Simanson Gary A 717 KING STREET ALEXANDRIA, VA22314 See Remarks Thunder Bridge Acquisition II LLC 9912 GEORGETOWN PIKE SUITE D203 GREAT FALLS, VA22066 Former 10% Owner Signatures /s/ Gary A. Simanson, Managing Member of Thunder Bridge Acquisition II LLC 06/14/2021 Signature of Reporting Person Date /s/ Gary A Simanson 06/14/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )In connection with the issuer's initial business combination on June 10, 2021 (the "Business Combination"), Gary A. Simanson exchanged his shares of Class A common stock for 100,000 fully paid and non-assessable shares of Class A common stock, par value $0.0001 per share, of indie Semiconductor, Inc. ("indie Common Stock"). ( 2 )These securities were held directly by Gary A. Simanson. ( 3 )Immediately prior to the consummation of the Business Combination, the issuer changed its corporate structure and domicile by way of continuation from an exempted company incorporated under the laws of the Cayman Islands to a corporation incorporated under the laws of the State of Delaware (the "Domestication"). Pursuant to the Domestication, each outstanding Class B ordinary share of the issuer ("Founder Shares") was converted into one share of the issuer's Class A common stock. Thunder Bridge Acquisition II LLC (the "Sponsor") held 8,625,000 Founder Shares prior to the Business Combination, which were converted into 8,625,000 shares of common stock upon the Domestication. In connection with the Business Combination, each share of Class A common stock was exchanged on a one-for-one basis for shares of indie Common Stock. ( 4 )In connection with the Business Combination, the Sponsor exchanged its shares of Class A common stock for 8,625,000 fully paid and non-assessable shares of indie Common Stock. ( 5 )These securities were held directly by the Sponsor. Gary A. Simanson is the managing member of the Sponsor and has sole voting and dispositive control over the securities held by the Sponsor and may be deemed the beneficial owner of such securities. Mr. Simanson disclaims beneficial ownership of the securities held by the Sponsor other than to the extent of his pecuniary interest therein.

Remarks: Former CEO, Director and 10% Owner.

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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