Company: KITTW
Filing Date: 2025-02-03
Form Type: S-3
Source: 0001849820-25-000045
Chunk: 41

Company: Nauticus Robotics, Inc.
Filing Date: 2025-02-03
Form: S-3
Chunk 41
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 reference have been so included in reliance on the report of Whitley Penn LLP, an independent registered public accounting firm, given on the authority of said firm as experts in auditing and accounting.

<div align='center'>37

$100,000,000
Common Stock
Preferred Stock</div>

#### Depositary Shares

#### Warrants

#### Rights

#### Units

#### Nauticus Robotics, Inc.

### PROSPECTUS
<div align='center'>, 2025

The information in this prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell nor does it seek an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.</div>

#### Subject to completion,

#### dated February 3, 2025

#### Filed Pursuant to Rule 424(b)(3)

#### Registration No. 333

#### PROSPECTUS SUPPLEMENT
(to Prospectus dated February 3, 2025)

#### Up t

#### o $30,000,000

#### Common Stock

#### NAUTICUS ROBOTICS, INC.
We have entered into an at the market Offering Agreement, or the Sales Agreement, with H.C. Wainwright & Co., LLC, or Wainwright, relating to shares of our common stock, $0.0001 par value per share, offered by this prospectus supplement and the accompanying prospectus. In accordance with the terms of the Sales Agreement, we may offer and sell shares of our common stock having an aggregate offering price of up to $30,000,000 from time to time through or to Wainwright, acting as agent or principal. You should read this prospectus supplement and the accompanying prospectus, as well as the documents incorporated or deemed to be incorporated by reference herein or therein, before you invest.

Our common stock is traded on the Nasdaq Capital Market under the symbol “KITT.” On January 15, 2025, the closing price of our common stock was $3.10 per share.

Sales of our common stock, if any, under this prospectus supplement may be made in sales deemed to be an “at the market offering” as defined in Rule 415(a)(4) promulgated under the Securities Act of 1933, as amended, or the Securities Act), including sales made directly on or through the Nasdaq Capital Market, the