Company: KITTW
Filing Date: 2025-09-02
Form Type: 424B3
Source: 0001849820-25-000222
Chunk: 0

Company: Nauticus Robotics, Inc.
Filing Date: 2025-09-02
Form: 424B3
Chunk 0
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#### Filed Pursuant to Rule 424(b)(3)

#### Registration No. 333-284675

#### PROSPECTUS SUPPLEMENT
(to Prospectus Supplement dated July 18,2025)

(to Prospectus Supplement dated June 30, 2025)

(to Prospectus dated May 29, 2025)

#### Up t

#### o $1,300,000

#### Common Stock

#### NAUTICUS ROBOTICS, INC.
This prospectus supplement is being filed to update, amend, and supplement certain information in the prospectus dated May 29, 2025 as supplemented by the prospectus supplement dated June 30, 2025 and the prospectus supplement dated July 18, 2025.

We previously entered into an At The Market Offering Agreement (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 now offer and sell shares of our common stock having an aggregate offering price of up to $1,300,000 from time to time through or to Wainwright, acting as agent or principal. From June 30, 2025 through the date hereof, the Company issued and sold 1,986,259 shares under this offering for gross proceeds of approximately $2.06 million and net proceeds of approximately $1.94 million, after deducting commissions and offering expenses. You should read this prospectus supplement as well as the prospectus supplements dated June 30, 2025, and July 18, 2025 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 August 28, 2025, the last reported sale price of our common stock was $0.92 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 existing trading market for our common stock, sales made to or through a market maker other than on an