Filed Pursuant to Rule 424(b)(3)
Registration No. 333-267375

PROSPECTUS SUPPLEMENT NO. 17
(to prospectus dated April 18, 2023)

NAUTICUS ROBOTICS, INC.

8,275,000 Shares of Common Stock

Up to 8,625,000 Shares of Common Stock Underlying Public Warrants to Purchase Common Stock

Up to 7,175,000 Shares of Common Stock Underlying Private Warrants to Purchase Common Stock

Up to 2,922,425 Shares of Common Stock Underlying Securities Purchase Agreement Warrants to Purchase Common Stock

Up to 2,922,425 Shares of Common Stock Underlying Convertible Debentures

This prospectus supplement is being filed to update and supplement the information contained in the prospectus dated April 18, 2023 (the “Prospectus”), with the information contained in our Current Report on Form 8-K filed with the Securities and Exchange Commission (the “SEC”) on April 10, 2024 (the “Current Report”). Accordingly, we have attached the Current Report to this prospectus supplement.

The Prospectus and this prospectus supplement relate to the offer and sale by us of (i) 862,500 shares of common stock, par value $0.0001 per share (“Common Stock”), of Nauticus Robotics, Inc. (the “Company”) which were issued upon the conversion of the rights to receive one twentieth (1/20) of one share of Common Stock (the “Right Shares”) in connection with the closing of the Business Combination (defined below), (2) 8,625,000 shares of Common Stock (the “Public Warrant Shares”) issuable upon the exercise of 8,625,000 redeemable warrants, which are exercisable at a price of $11.50 per share (the “Public Warrants”) and (3) 7,175,000 shares of Common Stock (the “Private Warrant Shares”) issuable upon the exercise of 7,175,000 redeemable warrants, purchased by CleanTech Sponsor I LLC and CleanTech Investments, LLC (together, the “Co-sponsors”) at a price of $1.00 per Private Warrant pursuant to a subscription agreement entered into in connection with CLAQ’s (defined below) initial public offering (“IPO”), which are exercisable at a price of $ 11.50 per share (the “Private Warrants”).

The Prospectus and this prospectus supplement also relate to the resale from time to time by the selling securityholders named in the Prospectus or their permitted transferees (the “Selling Securityholders”) of (i) 4,312,500 shares of Common Stock (the “Founder Shares”) that were issued to the Co- sponsors in conjunction with the IPO at a purchase price equivalent to approximately $0.00058 per Founder Share and subsequently converted upon the closing of the Business Combination and (ii) 3,100,000 shares of Common Stock purchased by certain Selling Securityholders at a price of $10.00 per share of Common Stock, and issued pursuant to the terms of certain subscription agreements entered into in connection with the Business Combination pursuant to the Merger Agreement (the “Merger Agreement,” and together with the other agreements and transactions contemplated thereby, the “Business Combination”) by and among CleanTech Acquisition Corp. (“CleanTech” or “CLAQ”), Nauticus Robotics Holdings, Inc. (formerly known as “Houston Mechatronics, Inc.”), a Texas corporation (“Nauticus Robotics Holdings”), and CleanTech Merger Sub, Inc. (“Merger Sub”), a wholly- owned subsidiary of CleanTech. Pursuant to the Merger Agreement, in connection with the consummation of the Business Combination Merger Sub merged with and into Nauticus Robotics Holdings, with Nauticus Robotics Holdings surviving the merger as a wholly owned subsidiary of the Company, and the Company was renamed “Nauticus Robotics, Inc.”

Further, the Prospectus and this prospectus relate to the offer and sale by us of (i) 2,922,425 shares of Common Stock (the “SPA Warrant Shares”) which have been or may be issued from time to time upon the exercise of 2,922,425 warrants that were issued to certain Selling Securityholders (the “SPA Investors”) pursuant to the SPA (the “SPA Warrants”) and (ii) 2,922,425 shares of Common Stock (the “Debenture Shares” and together with the SPA Warrant Shares, the “SPA Shares”) issuable upon the conversion of the debentures (the “Debentures”) that were purchased by certain Selling Securityholders pursuant to the SPA. Pursuant to the Securities Purchase Agreement by and among the Company, Nauticus Robotics Holdings, and the SPA Investors (the “SPA”), the SPA Investors subscribed for Debentures in an aggregate principal amount of $36,530,320. In exchange for such subscriptions, Nauticus delivered to such Selling Securityholders (i) a Debenture with a principal amount equal to such Selling Securityholder’s subscription amount and (ii) SPA Warrants.



This prospectus supplement updates and supplements the information in the Prospectus and is not complete without, any may not be delivered or utilized except in combination with, the Prospectus, including any amendments or supplements thereto. This prospectus supplement should be read in conjunction with the Prospectus and if there is any inconsistency between the information in the Prospectus and this prospectus supplement, you should rely on the information in this prospectus supplement.

Our Common Stock is listed on the Nasdaq Stock Market LLC under the symbol “KITT.” On April 17, 2024, the closing price for our Common Stock was $0.22 per share.

We are an “emerging growth company” as defined under the federal securities laws and, as such, have elected to comply with certain reduced public company reporting requirements.

Investing in our securities involves risks that are described in the “Risk Factors” section beginning on page 12 of the Prospectus. Neither the SEC nor any state securities commission has approved or disapproved of the securities to be issued under the Prospectus or determined if the Prospectus or this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is April 17, 2024.






UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported): April 9, 2024
NAUTICUS ROBOTICS, INC.
(Exact name of registrant as specified in its charter)
Delaware001-4061187-1699753
(State or other jurisdiction
of incorporation)		(Commission File Number)(IRS Employer
Identification No.)
17146 Feathercraft Lane, Suite 450, Webster, TX 77598
(Address of principal executive offices, including zip code)
Registrant’s telephone number, including area code: (281) 942-9069
Not Applicable
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common StockKITTThe Nasdaq Stock Market LLC
WarrantsKITTWThe Nasdaq Stock Market LLC
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company x
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐



Item 2.02 Results of Operations and Financial Conditions.

On April 9, 2024, Nauticus Robotics, Inc. (the "Company") issued a press release (the "Press Release") providing its financial results for the quarter and year ended December 31, 2023 and announcing that it will hold a conference call to discuss its operating results. The press release is furnished herewith as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

The information furnished pursuant to Item 2.02 of this Current Report on Form 8-K and in Exhibit 99.1 shall not be deemed to be "filed" for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), is not subject to the liabilities of that section and is not deemed incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended or the Exchange Act, except as otherwise expressly stated in such filing.
Item 8.01 Other Events
On April 9, 2024, in the Press Release the Company provided a link to a video of the testing activities of its Aquanaut Mk2 vehicle in the Gulf of Mexico. The video shows testing of the Aquanaut Mk2 vehicle to depths of greater than 1200 meters, in-water maneuvers of the Aquanaut Mk2 vehicle, and the ability of the Aquanaut Mk2 vehicle to hover above the seabed at a height of approximately 0.8 meters. The video is available on the Company's YouTube channel at youtube.com/@nauticusrobotics. The link for direct access to the video is https://youtu.be/GyPD1E-vqHA.
Item 9.01. Financial Statements and Exhibits.
(d) Exhibits.
ExhibitDescription
99.1
104Cover Page Interactive Data File (embedded within the Inline XBRL document).


SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
Dated: April 9, 2024 Nauticus Robotics, Inc.
By:/s/ Nicholas J. Bigney
Name: Nicholas J. Bigney
Title:General Counsel


Exhibit 99.1

Nauticus Robotics Tests Aquanaut Mk2 Vehicle, Announces 2023 Results


HOUSTON – April 9, 2024. Nauticus Robotics, Inc. (“Nauticus” or the “Company”) (NASDAQ: KITT) today announced preliminary testing results for its Aquanaut Mk2 vehicle and financial results for the quarter and year ended December 31, 2023.

“We have spent the past few months transforming Nauticus from a company with great R&D capabilities to one poised to be commercially successful,” said John W. Gibson, Jr., Nauticus’ CEO and President. “We successfully raised additional capital, reorganized our operations, materially reduced expected G&A costs, and initiated sea trials for our Aquanaut Mk2 vehicle in the Gulf of Mexico. These sea trials include not just depth, but maneuverability, emergency procedures, launch and recovery, and are milestone events in Nauticus’ vision. Our team has successfully tested to a depth of greater than 1,200 meters. We’ve gone from promise to product. The next generation of subsea vehicle is now in the water.”

Operational Highlights

•Product Structure: The Company has reorganized its personnel and operations to focus on its four main products: Autonomous Solutions, Government Solutions, Olympic Arms and toolKITT software. Each of these product groups has a dedicated leader and team focused on revenue-producing opportunities.
•Aquanaut Testing: Nauticus’ Aquanaut Mk2 vehicle exceeded expectations during its initial tests in the Gulf of Mexico, including launch and recovery, emergency procedures, and maneuverability. A video of part of the tests is available on the Company’s YouTube channel at https://youtu.be/GyPD1E-vqHA.
•Facility Consolidation: The Company brought assembly and maintenance in-house, eliminating external vendors in Canada and other countries. In the first quarter of 2024, Nauticus negotiated an exit to redundant office space in Houston and continues to work on subleasing or otherwise eliminating space in other locations as well.
•Customer Focus: Nauticus continued engagement with its early adopter customers. Nauticus also engaged Jorge Machnizh, a seasoned sales and business development leader. Jorge’s experience includes software and service sales in deepwater markets.
•Cost Alignment: The Company took steps to bring its G&A and other costs more closely in line with other companies of its size and operational history.
•Defense Contracts: Nauticus completed DIU contracts during the fourth quarter of 2023 and first quarter of 2024, and certificates of successful completion are expected.

Financial Results

•Revenue: Nauticus reported fourth quarter revenue of $1.1 million and full year revenue of $6.6 million, compared to $3.2 million and $11.4 million for the prior-year periods.


•Operating Expenses: Total expenses during the fourth quarter were $35.3 million, a $24.9 million increase from the prior-year period. Expenses for the year were $61.7 million, a $31.2 million increase from 2022.
•Impairment Charges: In the fourth quarter of 2023, Nauticus reported an impairment charge for property plant and equipment of $25.3 million compared to $0 in 2022.
•Net Loss: For the fourth quarter, Nauticus recorded a net loss of $39.5 million, or $1.23 per diluted share. This compares with $8.2 million from the same period in 2022. Full year 2023 net loss was $50.7 million compared to $33.2 million for full year 2022.
•Adjusted Net Loss: Nauticus reported adjusted net loss of $8.8 million for the fourth quarter, and $34.4 million for 2023 compared to $5.7 million and $15.7 million for the same period in 2022. Adjusted net loss is a non-GAAP measure which excludes the impact of certain items, as shown in the non-GAAP reconciliation table below.
•2024 G&A Cost: Nauticus is expecting to reduce G&A costs from $18.2 million in 2023 to $8.3 million in 2024.

Balance Sheet and Liquidity

•As of December 31, 2023, the Company had cash and cash equivalents of $0.8 million, compared to $17.8 million as of December 31, 2022.
•In the fourth quarter of 2023 and first quarter of 2024, the Company successfully worked with its private investors to restructure its private warrants, eliminating the overhang from the ratcheting conversion mechanism, and add additional financing of $0.7 million.
•In Q1, the Company closed additional financing of $13.3 million to provide liquidity needed for operations and testing.
•During the fourth quarter, the Company classified $2.9 million as assets held for sale, offset by a liability of $1.2 million.

Leadership Updates

Nauticus also brought in an experienced leadership team in the fourth quarter of 2023 to guide the Company to the next stage of commercial development:

•John Gibson, an established executive and CEO with 30+ years of energy, technology and public company experience, joined as President in the fourth quarter of 2023 and was named CEO in the first quarter of 2024;
•Victoria Hay, a seasoned finance and accounting executive who has worked with Nauticus for over a year as a consultant, expanded her role in the fourth quarter of 2023 to include CFO on an interim basis;
•Nick Bigney, a legal executive with experience as general counsel of both public and private companies in the energy and technology space, joined as General Counsel in the fourth quarter of 2023.

Mr. Gibson, Mrs. Hay and Mr. Bigney join the Company’s longstanding Chief Technology Officer, JD Yamokoski, to form the Company’s executive team.



Conference Call Details
Nauticus will host a conference call on April 10, 2024 at 10:00 a.m. Central Daylight Time (11:00 a.m. EDT) to discuss its results for the quarter and year ended December 31, 2023. To participate in the earnings conference call, participants should access the webcast at https://events.q4inc.com/attendee/275183074, or by dialing toll free 800-267-6316, conference ID: KITT. A link to the webcast will also be available on the Company’s website (https://ir.nauticusrobotics.com/). Following the conclusion of the call, a recording will be available on the Company’s website.
About Nauticus Robotics

Nauticus Robotics, Inc. develops autonomous robots for the ocean industries. Autonomy requires the extensive use of sensors, artificial intelligence, and effective algorithms for perception and decision allowing the robot to adapt to changing environments. The company’s business model includes using robotic systems for service, selling vehicles and components, and licensing of related software to both the commercial and defense business sectors. Nauticus has designed and is currently testing and certifying a new generation of vehicles to reduce operational cost and gather data to maintain and operate a wide variety of subsea infrastructure. Besides a standalone service offering and forward-facing products, Nauticus’ approach to ocean robotics has also resulted in the development of a range of technology products for retrofit/upgrading traditional ROV operations and other third-party vehicle platforms. Nauticus’ services provide customers with the necessary data collection, analytics, and subsea manipulation capabilities to support and maintain assets while reducing their operational footprint, operating cost, and greenhouse gas emissions, to improve offshore health, safety, and environmental exposure.
Cautionary Language Regarding Forward-Looking Statements
This press release contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended (the “Act”), and are intended to enjoy the protection of the safe harbor for forward-looking statements provided by the Act as well as protections afforded by other federal securities laws. Such forward-looking statements include but are not limited to: the expected timing of product commercialization or new product releases; customer interest in Nauticus’ products; estimated operating results and use of cash; and Nauticus’ use of and needs for capital. Generally, statements that are not historical facts, including statements concerning possible or assumed future actions, business strategies, events, or results of operations, are forward-looking statements. These statements may be preceded by, followed by, or include the words “believes,” “estimates,” “expects,” “projects,” “forecasts,” “may,” “will,” “should,” “seeks,” “plans,” “scheduled,” “anticipates,” “intends,” or “continue” or similar expressions. Forward-looking statements inherently involve risks and uncertainties that may cause actual events, results, or performance to differ materially from those indicated by such statements. These forward-looking statements are based on Nauticus’ management’s current expectations and beliefs, as well as a number of assumptions concerning future events. There can be no assurance that the events, results, or trends identified in these forward-looking statements will occur or be achieved. Forward-looking statements speak only as of the date they are made, and Nauticus is not under any obligation and expressly disclaims any obligation, to update, alter, or otherwise revise any forward-looking statement, whether as a result of new information, future events, or otherwise, except as required by law. Readers should carefully review the statements set forth in the reports which Nauticus has filed or will file from time to time with the Securities and Exchange Commission (the “SEC”) for a more complete discussion of the risks and uncertainties facing the Company and that could cause actual outcomes to be materially different from those indicated in the forward-looking statements made by the Company, in particular the sections entitled “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements” in documents filed from time to time with the SEC, including Nauticus’ most recent Annual Report on Form 10-K. Should one or more of these risks, uncertainties, or other factors materialize, or should assumptions underlying the forward-looking information or statements prove incorrect, actual results may vary materially from those described herein as intended, planned, anticipated, believed, estimated, or expected. The documents filed by Nauticus with the SEC may be obtained free of charge at the SEC’s website at www.sec.gov.






NAUTICUS ROBOTICS, INC.
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS
  
 December 31, 2023 December 31, 2022
ASSETS   
Current Assets:   
Cash and cash equivalents$753,398 $17,787,159
Restricted certificate of deposit201,822 250,375
Short-term investments
- 4,959,263
Accounts receivable, net212,428 1,622,434
Inventories2,198,797 6,666,912
Contract assets- 573,895
Prepaid expenses1,889,218 5,046,599
Other current assets1,025,214 56,410
Assets held for sale
2,940,254 -
Total Current Assets
9,221,131 36,963,047
 
   
Property and equipment, net
15,904,845 15,167,367
Operating lease right-of-use asset
834,972 317,208
Other assets
187,527 155,490
Total Assets$26,148,475 $52,603,112
    
LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT)   
Current Liabilities:   
Accounts payable $7,035,450 $324,484
Accrued liabilities7,339,099 3,142,977
Contract liability2,767,913 -
Operating lease liabilities – current244,774 410,158
Total Current Liabilities
17,387,236 3,877,619
Warrant liabilities
18,376,180 32,688,342
Operating lease liabilities - long-term
574,260 87,214
Notes payable - long-term, net of discount (related party)
31,597,649 15,922,118
Total Liabilities$67,935,325 $52,575,293
    
Stockholders’ Equity (Deficit)   
Common stock, $0.0001 par value; 625,000,000 shares authorized, 50,035,824 and 47,250,771 shares issued, respectively, and 50,035,824 and 47,250,771 shares outstanding, respectively
$5,004 $4,725
Additional paid-in capital76,999,849 68,128,196
Accumulated deficit(118,791,703) (68,105,102)
Total Stockholders’ Equity (Deficit)
(41,786,850) 27,819
Total Liabilities and Stockholders' Equity (Deficit)$26,148,475 $52,603,112




NAUTICUS ROBOTICS, INC.
Unaudited Condensed Consolidated Statements of Operations
 Three Months Ended Twelve Months Ended
 12/31/2023 12/31/2022 9/30/2023 12/31/2023 12/31/2022
          
Revenue:         
Service$1,063,603 $3,213,825 $1,593,854 $6,605,852 $11,210,559
Service - related party- 14,000 - 500 224,400
Total revenue1,063,603 3,227,825 1,593,854 6,606,352 11,434,959
Costs and expenses:         
Cost of revenue (exclusive of items shown separately below)4,444,682 3,643,415 2,651,380 11,928,931 11,863,862
Depreciation
242,360 146,643 160,744 729,412 516,949
Research and development414,678 282,634 275,154 1,399,560 2,376,912
General and administrative 1,194,961 6,278,067 6,303,662 18,271,832 15,040,603
Severance1,075,408 - 401,228 1,476,636 15,962
Impairment of property and equipment25,354,791 - - 25,354,791 -
Loss on contract2,542,913 - - 2,542,913 -
Total costs and expenses
35,269,793 10,350,759 9,792,168 61,704,075 29,814,288
          
Operating loss(34,206,190) (7,122,934) (8,198,314) (55,097,723) (18,379,329)
          
Other (income) expense:         
Other expense (income), net
(388,328) (54,024) (133,311) 627,580 (33,247)
Loss on lease termination
453,162 - - 453,162 -
Foreign currency transaction loss (gain)
(12,041) - 83,654 44,020 (260,615)
Loss on exchange of warrants
— - - 590,266 -
Change in fair value of warrant liabilities3,872,731 497,849 8,656,392 (14,902,427) 6,461,087
Interest expense, net
1,410,875 656,357 873,738 8,776,277 3,714,017
Total other (income) expense, net5,336,399 1,100,182 9,480,473 (4,411,122) 9,881,242
          
Net loss(39,542,589) (8,223,116) (17,678,787) (50,686,601) (28,260,571)
Less: Deemed dividend from earnout shares
- - - - (4,957,366)
Net loss attributable to common stockholders$(39,542,589) $(8,223,116) $(17,678,787) $(50,686,601) $(33,217,937)
          
Basic and diluted earnings (loss) per share
$(1.23) $(0.21) $0.43 $(1.24) $(1.75)
          
Basic and diluted weighted average shares outstanding41,191,799  39,750,778  41,155,115  40,943,444  18,982,139




NAUTICUS ROBOTICS, INC.
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
 Years ended December 31,
 2023 2022
Cash flows used in operating activities:   
Net loss$(50,686,601) $(28,260,571)
Adjustments to reconcile net loss to net cash used in operating activities:
   
Depreciation729,412 516,949
Accretion of debt discount4,033,330 1,342,062
Amortization of debt issuance cost
52,092  -
Accretion of RCB Equities #1, LLC exit fee27,608 -
Stock-based compensation4,427,073 2,602,175
Loss on exchange of warrants590,266 -
Change in fair value of warrant liabilities(14,902,427) 6,461,087
Noncash impact of lease accounting346,714 196,555
Interest expense assumed into Convertible Senior Secured Term Loan378,118 -
Impairment of property and equipment25,354,791 -
Settlement of liquidated damages with common stock3,685,629 -
Loss on disposal of assets82,604 -
Loss on lease termination453,162 -
Gain on short-term investments(40,737) -
Changes in current assets and liabilities:
   
Accounts receivable1,410,006 (828,298)
Inventories(11,334,716) (6,666,912)
Contract assets573,895 319,480
Prepaid expenses and other assets607,784 (4,902,797)
Accounts payable and accrued liabilities9,400,137 (7,731,279)
Contract liabilities2,767,913 -
Operating lease liabilities(338,979) (323,434)
Net cash used in operating activities(22,382,926) (37,274,983)
    
Cash flows used in investing activities:   
Capital expenditures
(11,633,153) (14,247,005)
Proceeds from sale of property and equipment
38,704 -
Proceeds from sale of short-term investments
5,000,000 -
Purchase of short-term investments
- (4,959,263)
Net cash used in investing activities
(6,594,449) (19,206,268)
    
Cash flows from financing activities:
   
Proceeds from notes payable11,791,884 2,000,000
Payment of debt issuance costs on notes payable
(607,500) -
Proceeds from exercise of warrants338,055 -
Proceeds from exercise of stock options
421,175 -
Payments of note payable
- (17,850,333)
Proceeds from reverse recapitalization with CleanTech Acquisition Corp, net
- 14,947,876
Proceeds from issuance of common stock for Pipe Investment- 31,000,000
Proceeds from issuance of debentures and SPA Warrants, net of discount
- 35,800,000
Payment of transaction costs on equity funding
- (12,582,000)
Net cash from financing activities11,943,614 53,315,543


    
Net change in cash and cash equivalents(17,033,761) (3,165,708)
    
Cash and cash equivalents, beginning of year17,787,159 20,952,867
Cash and cash equivalents, end of year$753,398  $17,787,159



































NAUTICUS ROBOTICS, INC.
Unaudited Reconciliation of Net Loss Attributable to Common Stockholders (GAAP) to Adjusted Net Loss Attributable to Common Stockholders (NON-GAAP)
Adjusted net loss attributable to common stockholders is a non-GAAP financial measure which excludes certain items that are included in net loss attributable to common stockholders, the most directly comparable GAAP financial measure. Items excluded are those which the Company believes affect the comparability of operating results and are typically excluded from published estimates by the investment community, including items whose timing and/or amount cannot be reasonably estimated or are non-recurring.
Adjusted net loss attributable to common stockholders is presented because management believes it provides useful additional information to investors for analysis of the Company’s fundamental business on a recurring basis. In addition, management believes that adjusted net loss attributable to common stockholders is widely used by professional research analysts and others in the valuation, comparison, and investment recommendations of companies such as Nauticus.
Adjusted net loss attributable to common stockholders should not be considered in isolation or as a substitute for net loss attributable to common stockholders or any other measure of a company’s financial performance or profitability presented in accordance with GAAP. A reconciliation of the differences between net loss attributable to common stockholders and adjusted net loss attributable to common stockholders is presented below. Because adjusted net loss attributable to common stockholders excludes some, but not all, items that affect net loss attributable to common stockholders and may vary among companies, our calculation of adjusted net loss attributable to common stockholders may not be comparable to similarly titled measures of other companies.
 Three Months EndedTwelve Months Ended
 12/31/202312/31/20229/30/202312/31/202312/31/2022
Net loss attributable to common stockholders (GAAP)
$    (39,542,589)
$(8,223,116)$(17,678,787)$(50,686,601)$(33,217,937)
Change in fair value of warrant liabilities    3,872,731
    497,849
    8,656,392
    (14,902,427)
6,461,087
Impairment of property and equipment    25,354,791--
    25,354,791
-
Stock compensation expense
    432,053
    1,997,768    917,9934,427,0732,602,175
Severance     1,075,408-    401,228
    1,476,636
15,962
Expenses related to business combination----3,519,662
Deemed dividend for earnout shares----4,957,366
Adjusted net loss attributable to common stockholders (non-GAAP)$(8,807,606)$(5,727,499)$(7,703,174)$(34,330,528)$(15,661,685)