Company: FTCI
Filing Date: 2025-05-01
Form Type: 424B5
Source: 0001193125-25-109046
Chunk: 2

Company: FTC Solar, Inc.
Filing Date: 2025-05-01
Form: 424B5
Chunk 2
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HOLDERS                                              |     |      | 22 |
| LEGAL MATTERS                                             |     |      | 24 |
| EXPERTS                                                   |     |      | 24 |
| WHERE YOU CAN FIND MORE INFORMATION; INCORPORATION BY     
 REFERENCE                                                 |     |      | 25 |

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ABOUT THIS PROSPECTUS SUPPLEMENT

A registration statement on Form S-3 (File No. 333-265842) utilizing a shelf registration process relating to the securities described in
this prospectus supplement was initially filed with the SEC on June 27, 2022 and was declared effective on July 7, 2022.

This
document is in two parts. The first part is this prospectus supplement, which describes the specific terms of this offering of common stock. The second part is the accompanying base prospectus, which provides more general information, some of which
may not apply to this offering. The information included or incorporated by reference in this prospectus supplement also adds to, updates and changes information contained or incorporated by reference in the accompanying base prospectus. It is also
important for you to read and consider all information contained in this prospectus supplement and the accompanying base prospectus, including the documents we have referred you to in the section entitled “Where You Can Find More Information” below in this prospectus supplement. If information included or incorporated by reference in this prospectus supplement is inconsistent with the accompanying base prospectus or the information incorporated by reference therein,
then this prospectus supplement or the information incorporated by reference in this prospectus supplement will apply and will supersede the information in the accompanying base prospectus and the documents incorporated by reference therein. You
should assume that the information contained in this prospectus supplement, the accompanying base prospectus and the documents incorporated by reference is accurate only as of their respective dates.

You should rely only on the information incorporated by reference or provided in this prospectus supplement and the accompanying base
prospectus. We have not, and the Manager has not, authorized any person to provide you with any information or to make any representation other than as contained in this prospectus supplement or in the accompanying base prospectus and the
information incorporated by reference herein and therein. We and the Manager do not take any responsibility for, and can provide no assurance as to the reliability of, any information that others may provide you. The information appearing or
incorporated by reference in this prospectus supplement and the accompanying base prospectus is accurate only as of the