Company: FTCI
Filing Date: 2025-05-16
Form Type: S-3/A
Source: 0001193125-25-121719
Chunk: 53

Company: FTC Solar, Inc.
Filing Date: 2025-05-16
Form: S-3/A
Chunk 53
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 under applicable law, our rights or the rights of the applicable licensors, if any, to these trademarks, service marks, trade names and
copyrights.

S-7

As of March 31, 2025, we had patents in the following locations:

| Locations     |     | Patents 
 Granted |    |     | Patents     
 Allowed and 
 Pending for 
 Examination |   |
| United States |     |         | 42 |     |             | 2 |
| Australia     |     |         |  5 |     |             | 0 |
| All other     |     |         |  9 |     |             | 1 |
| Total         |     |         | 56 |     |             | 3 |

Our issued U.S. patents are expected to expire between 2027 and 2043. Corporate Information We were incorporated under the laws of the State of Delaware on January 3, 2017 under the name FTC Solar, Inc. Our principal executive offices are located at 9020 N Capital of Texas Hwy, Suite I-260,Austin, Texas 78759. Our telephone number is (737) 787-7906.Our website address is www.ftcsolar.com. Information contained on, or that can be accessed through, our website is not incorporated by reference into this prospectus supplement, and you should not consider information on our website to be part of this prospectus supplement. S-8

THE OFFERING

| Common Stock Offered in This Offering | Shares of our common stock having an aggregate offering price of up to $13,755,287. |

| Common Stock Outstanding Before This Offering | 13,083,998 shares. |

| Common Stock to be Outstanding After This Offering | 16,438,945 shares, assuming sales at a price of $4.10 per share, which was the closing price of our common stock on Nasdaq on May 14, 2025. The actual number of shares issued will vary depending on the sales price under this offering. |

| Plan of Distribution | An “at the market offering” that may be made from time to time through Wainwright as sales agent or principal. See “Plan of Distribution” on page S-18 of this prospectus 
 supplement for more information.                                                                                                                                          |

| Use of Proceeds | We intend to use the net proceeds, if any, from this offering for general corporate purposes, including working capital and operating expenses. We may also use a