Company: KITTW
Filing Date: 2025-06-30
Form Type: 424B3
Source: 0001849820-25-000159
Chunk: 9

Company: Nauticus Robotics, Inc.
Filing Date: 2025-06-30
Form: 424B3
Chunk 9
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 with a weighted average exercise price of $9.25 per share;                                                                                                                                                                                           
 •2,097,561 shares of common stock issuable upon conversion of outstanding convertible debentures;                                                                                                                                                                                                                                    
 •5,672,022 shares of common stock issuable upon conversion of outstanding convertible term loans;                                                                                                                                                                                                                                    
 •17,849.756 shares of common stock issuable upon conversion of outstanding preferred equity; and                                                                                                                                                                                                                                     
 •271,048 shares of common stock available for future issuance under our 2022 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” on page S-11.                                                                                                                                                                          |

<div align='center'>S-6</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-6 of this prospectus supplement.                                                                                                                                                                                                                                                                                                                                           |
| 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-7</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 and any prospectus supplement in their entirety, as the same may be amended, supplemented, or superseded from time to time by our filings under the Securities Exchange Act of 1934, as amended, or the Exchange Act. Before making an investment decision, you should carefully consider these risks as well as other