UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________ Commission File Number: 001-40555 THUNDER BRIDGE CAPITAL PARTNERS IV INC. (Exact name of registrant as specified in its charter) | Delaware | 8 ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________ Commission File Number: 001-40555 THUNDER BRIDGE CAPITAL PARTNERS IV INC. (Exact name of registrant as specified in its charter) Delaware 86-1826129 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification Number) 9912 Georgetown Pike Suite D203 ...