Company: KITTW
Filing Date: 2025-06-30
Form Type: 424B3
Source: 0001849820-25-000159
Chunk: 19

Company: Nauticus Robotics, Inc.
Filing Date: 2025-06-30
Form: 424B3
Chunk 19
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 supplement electronically.

<div align='center'>S-15</div>

### LEGAL MATTERS
The validity of the shares of common stock offered hereby will be passed upon for us by Norton Rose Fulbright US LLP, Houston, Texas. Ellenoff Grossman & Schole LLP, New York, New York, is counsel for Wainwright in connection with this offering.

<div align='center'>S-16</div>

### EXPERTS
Whitley Penn LLP, an independently registered public accounting firm, has audited our financial statements as of and for each of the years in the two-year period ended December 31, 2024, which are included in our Annual Report on Form 10-K for the year ended December 31, 2024, as set forth in their report dated April 15, 2025. Such consolidated financial statements are incorporated herein by reference in reliance upon such report given on the authority of such firm as experts in accounting and auditing.

<div align='center'>S-17</div>

### WHERE YOU CAN FIND MORE INFORMATION
We file Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K, proxy statements, and other information with the SEC. Our SEC filings are available to the public over the Internet at the SEC’s website at www.sec.gov .

Copies of certain information filed by us with the SEC are also available on our website at www.nauticusrobotics.com. We may use our investor relations website to post important information for investors, including press releases, public conference calls and webcasts, and other information, and as a means of disclosing material non-public information and for complying with our disclosure obligations under Regulation FD. Accordingly, investors should monitor our investor relations website, in addition to following filings with the SEC. The contents on our website are not part of this prospectus supplement or the accompanying prospectus, and the reference to our website does not constitute incorporation by reference into this prospectus supplement or the accompanying prospectus of the information contained at our website.

This prospectus supplement and the accompanying prospectus are part of a registration statement on Form S-3 we filed with the SEC. This prospectus supplement and the accompanying prospectus omit some information contained in the registration statement in accordance with SEC rules and regulations. You should review the information and exhibits in the registration statement for further information about us and our securities. Statements in this prospectus supplement concerning any document we filed as an exhibit to the registration statement or that we