Company: KITTW
Filing Date: 2025-10-31
Form Type: 424B3
Source: 0001849820-25-000267
Chunk: 9

Company: Nauticus Robotics, Inc.
Filing Date: 2025-10-31
Form: 424B3
Chunk 9
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 (281) 942-9069. Our website address is www.nauticusrobotics.com.

<div align='center'>S-5</div>

### THE OFFERING
| Common stock offered by us                                    |     | Shares of our common stock having an offering price of up to $92,000,000 or up to 53,025,937 shares, assuming the sale price of $1.735 per share, which was the closing price of our common stock on the Nasdaq Capital Market on October 29, 2025. The actual number of shares issued will vary depending on the sales price under this offering. From June 30, 2025 through the date hereof, the Company issued and sold 1,895,204 shares on a post-Reverse Split basis (including 1,663,925 shares issued after the Reverse Split, and 2,081,513 shares issued prior to the Reverse Split, which are equivalent to 231,279 shares on a post-Reverse Split basis) under this at-the-market offering for gross proceeds of approximately $7.02 million and net proceeds of approximately $6.74 million, after deducting commissions and offering expenses. |
| Shares Available                                              |     | As of October 31, 2025, shares of our common stock with an aggregate offering price of up to $92,000,000 is available for sale.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Common stock to be outstanding immediately after the offering |     | Up to 66,516,807 shares, assuming sales of 53,025,937 shares at a price of $1.735 per share, which was the closing price of our common stock on the Nasdaq Capital Market on October 29, 2025, and excludes as of such date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
 •1,880 shares of common stock issuable upon exercise of stock options outstanding under our equity incentive plans, with a weighted-average exercise price of $652.59 per share;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
 •60,602 shares of common stock issuable upon exercise of outstanding warrants, with a weighted average exercise price of $83.25 per share;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
 •233,062 shares of common stock issuable upon conversion of outstanding convertible debentures.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
 •628,681 shares of common stock issuable upon conversion of outstanding convertible term loans;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
 •1,480,739 shares of