Company: KITTW
Filing Date: 2025-09-15
Form Type: 424B3
Source: 0001849820-25-000236
Chunk: 3

Company: Nauticus Robotics, Inc.
Filing Date: 2025-09-15
Form: 424B3
Chunk 3
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2 Omnibus Incentive Plan.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| Plan of Distribution                                          |     | “At the market offering” that may be made from time to time through or to Wainwright, as sales agent or principal. See “Plan of Distribution” in this prospectus supplement.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |

<div align='center'>S-1</div>

| Use of Proceeds                  |     | We intend to use the net proceeds, if any, from this offering for working capital and general corporate purposes. See “Use of Proceeds” beginning on page S-10 of the prospectus supplement dated June 30, 2025.                                                                                                                                                                                                                                                                                                                       |
|:---------------------------------|:----|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Risk Factors                     |     | Investing in our common stock involves significant risks. Please read the information contained in and incorporated by reference under the heading “Risk Factors” on page S-3 of this prospectus supplement and under similar headings in the other documents that are filed after the date hereof and incorporated by reference into this prospectus supplement, together with the other information included in or incorporated by reference into this prospectus supplement, before deciding whether to invest in our common stock. |
| The Nasdaq Capital Market Symbol |     | KITT                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |

<div align='center'>S-2</div>

### RISK FACTORS
Investing in our common stock involves significant risks. Please see the risk factors under the heading “Risk Factors” in any prospectus supplement as well as in our most recent Annual Report on Form 10-K and in our Quarterly Reports on Form 10-Q filed subsequent to the Annual Report on Form 10-K, which are on file with the Securities and Exchange Commission, or the SEC, and are incorporated by reference in this prospectus supplement and the accompanying prospectus in their entirety, as the same may be amended, supplemented, or superseded from time to time by our filings under the Securities Act and the Exchange Act. Before making an investment decision, you should carefully consider these risks as well as other information we include or incorporate by reference in this prospectus supplement and the accompanying prospectus. The risks and uncertainties we have described are not the only ones we are facing. These risks, and additional risks not known to us or that we currently believe are immaterial, could materially and adversely affect our business, operating results, cash flows, financial condition, or prospects, and the common stock offered