Portfolio Offers Flexible In-Cabin Design Options for Leading OEMs;

Enables Next-Generation Adaptive Front Lighting Systems

indie Semiconductor, an Autotech solutions innovator which is currently in the process of merging with Thunder Bridge Acquisition II, Ltd. (NASDAQ:THBR), a special purpose acquisition company, today unveiled a family of highly integrated and flexible solutions optimized for automotive interior lighting applications in next-generation vehicles. Specifically, indie's smart LED devices combine a 32-bit general-purpose microcontroller together with all the necessary hardware and software programming required to implement an interior lighting system – in various configurations.

From exterior styling to how drivers see the cockpit with interior cabin lights, smart lighting is changing how automobiles are designed, marketed and distinguished. In particular, with new LED platforms generating the same light intensity while consuming substantially less energy than legacy incandescents, automotive OEMs now have more options and form factors when determining where lighting can be placed on the interior, front and rear of vehicles. Beyond improved efficiency and styling, LED technologies are also enabling adaptive front lighting systems (AFS) — one of the most important factors in mitigating driver fatigue and increasing safety under challenging conditions.

"With LED lighting rapidly becoming a defining element in the overall automotive user experience, carmakers are deploying more sophisticated solutions to differentiate their brand," said Michael Wittmann, indie's vice president of marketing. "indie's broad portfolio of smart LED controllers delivers unmatched performance, power efficiency and cost-optimized architectures. At a higher level, today's smart lighting news underscores indie's strategic mission to re-architect the vehicle of tomorrow today through highly integrated, reliable and scalable solutions."

About indie's Advanced Lighting Solutions

indie's portfolio includes the following:

iND83204 CSXX – family of up to 24-way RGB (W) LED driver with integrated buck
iND83210 – a 24-way RGB (W) LED driver
iND832XX – family of three-way RGB LED drivers

All products are designed to meet stringent AEC-Q100 automotive requirements and manufactured in IATF16949-certified production facilities.

For specific information about indie's lighting products, please contact info@indiesemi.com.

About indie

indie is empowering the Autotech revolution with next generation automotive semiconductors and software platforms. We focus on edge sensors for Advanced Driver Assistance Systems including LiDAR, connected car, user experience and electrification applications. These technologies represent the core underpinnings of both electric and autonomous vehicles, while the advanced user interfaces transform the in-cabin experience to mirror and seamlessly connect to the mobile platforms we rely on every day. We are an approved vendor to Tier 1 partners and our solutions can be found in marquee automotive OEMs around the world. Headquartered in Aliso Viejo, CA, indie has design centers and sales offices in Austin, TX; Boston, MA; Detroit, MI; San Francisco and San Jose, CA; Budapest, Hungary; Dresden, Germany; Edinburgh, Scotland and various locations throughout China.

Please visit us at www.indiesemi.com to learn more.

About Thunder Bridge Acquisition II, Ltd.

Thunder Bridge Acquisition II, Ltd. is a blank check company formed for the purpose of effecting a merger, share exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. In August 2019, Thunder Bridge Acquisition II, Ltd. consummated a $345 million initial public offering (the "IPO") of 34.5 million units (reflecting the underwriters' exercise of their over-allotment option in full), each unit consisting of one Class A ordinary shares and one-half warrant, each whole warrant enabling the holder thereof to purchase one Class A ordinary share at a price of $11.50 per share. Thunder Bridge Acquisition II's securities are quoted on the Nasdaq stock exchange under the ticker symbols THBRU, THBR and THBRW.

Thunder Bridge Acquisition II Shareholder Vote

Shareholders who own shares of Thunder Bridge Acquisition II as of May 10, 2021, should submit their vote by 11:59 p.m. Eastern Time on June 8, 2021. For more information on how to vote, please visit https://www.cstproxy.com/thunderbridgeacquisitionii/sm2021/. Thunder Bridge Acquisition II shareholders who need assistance in completing the proxy card, need additional copies of the proxy materials, or have questions regarding the Special Meeting may contact Thunder Bridge Acquisition II's proxy solicitor, Morrow Sodali LLC, by telephone toll-free at (800) 662-5200 or collect at (203) 658-9400.

The definitive proxy statement/prospectus is also available at www.sec.gov. Thunder Bridge Acquisition II shareholders are encouraged to read the definitive proxy statement/prospectus as it contains important information about the proposed transaction, including, among other things, the reasons for Thunder Bridge Acquisition II's board of directors' unanimous recommendation that the shareholders of Thunder Bridge Acquisition II vote "FOR" the proposed business combination and the other shareholder proposals set forth in the proxy statement/prospectus as well as the background of the process that led to the proposed business combination with indie.

The proposed business combination is expected to close on or about June 10, 2021, subject to shareholder approvals, Nasdaq approval, and satisfaction of customary closing conditions. Following completion of the proposed business combination, indie will retain its experienced management team including Donald McClymont, Co-founder and CEO; Ichiro Aoki, Co-founder and President; Dr. Scott Kee, Co-founder and Chief Technology Officer; Thomas Schiller, Chief Financial Officer and EVP of Strategy and Steve Machuga, Chief Operating Officer. The combined company will retain the indie Semiconductor name and be listed on Nasdaq under the new ticker symbol "INDI."

Additional Information about the Transaction and Where to Find It

In connection with the proposed business combination, on January 25, 2021, Thunder Bridge Acquisition II filed with the U.S. Securities and Exchange Commission ("SEC") a registration statement on Form S-4 (SEC File No. 252374) (the "Form S-4"), which includes a proxy statement/prospectus, which was amended on March 23, May 4, May 10, and May 12, 2021. The Form S-4 was declared effective on May 14, 2021, and the definitive proxy statement/prospectus and other proxy materials were mailed to Thunder Bridge Acquisition II's shareholders of record as of the close of business on May 10, 2021. Before making any voting or investment decision, Thunder Bridge Acquisition II's shareholders and other interested persons are urged to read the Form S-4, as amended, the definitive proxy statement/prospectus included in the Form S-4, and documents incorporated by reference therein filed in connection with the proposed business combination, as these materials contain important information about indie, Thunder Bridge Acquisition II and the proposed business combination. The documents filed by Thunder Bridge Acquisition II with the SEC may be obtained free of charge at the SEC's website at www.sec.gov or by directing a request to Thunder Bridge Acquisition II, Ltd., 9912 Georgetown Pike, Suite D203, Great Falls, Virginia, 22066, Attention: Secretary, or by calling (202) 431-0507.

Participants in the Solicitation

indie Semiconductor and Thunder Bridge Acquisition II and their respective directors and executive officers and certain other members of management and employees may be deemed "participants" in the solicitation of proxies from Thunder Bridge Acquisition II shareholders with respect to the business combination. A list of the names of those directors and executive officers and a description of their interests in Thunder Bridge Acquisition II or indie Semiconductor is set forth in the proxy statement/prospectus for the proposed business combination included in the Form S-4, which is available at www.sec.gov. Information about Thunder Bridge Acquisition II's directors and executive officers and their ownership of Thunder Bridge Acquisition II ordinary shares is set forth in Thunder Bridge Acquisition II prospectus, dated August 9, 2019 and in the proxy statement/prospectus included in the Form S-4, as may be modified or supplemented by any Form 3 or Form 4 filed with the SEC since the date of such filings. These documents can be obtained free of charge from www.sec.gov.

Forward Looking Statements

This communication contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about our intentions to merge with Thunder Bridge Acquisition II; and other statements identified by words such as "will likely result," "are expected to," "will continue," "is anticipated," "estimated," "believe," "intend," "plan," "projection," "outlook" or words of similar meaning. Such forward-looking statements are based upon the current beliefs and expectations of our management and are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are difficult to predict and generally beyond our control. Actual results and the timing of events may differ materially from the results anticipated in these forward-looking statements. In addition to factors previously disclosed in Thunder Bridge Acquisition II's reports filed with the SEC and those identified elsewhere in this communication, the following factors, among others, could cause actual results and the timing of events to differ materially from the anticipated results or other expectations expressed in the forward-looking statements: inability to meet the closing conditions to the business combination, including the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive agreement; the inability to complete the transactions contemplated by the definitive agreement due to the failure to obtain approval of Thunder Bridge Acquisition II's shareholders; and other risks and uncertainties indicated in the proxy statement/prospectus relating to the proposed business combination, including those under "Risk Factors" therein, and in Thunder Bridge Acquisition II's other filings with the SEC. Indie cautions that the foregoing list of factors is not exclusive.

All information set forth herein speaks only as of the date hereof, and we disclaim any intention or obligation to update any forward-looking statements as a result of developments occurring after the date of this communication except as required by law.

No Offer or Solicitation

This press release shall not constitute a solicitation of a proxy, consent, or authorization with respect to any securities nor shall it constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any states or jurisdictions in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction.

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indie Semiconductor Launches Advanced Solutions for Automotive Lighting Applications