Form 8-K Nauticus Robotics, Inc. For: Sep 23

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September 29, 2026 8:31 AM EDT

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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): September 23, 2026

NAUTICUS ROBOTICS, INC.

(Exact name of registrant as specified in its charter)

Delaware

001-40611

87-1699753

(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 class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock

KITT

The Nasdaq Stock Market LLC

Warrants

KITTW

The 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. x

Item 1.01. Entry into a Material Definitive Agreement.

Waiver of September 30, 2026 Triggering Event

On September 23, 2026, Nauticus Robotics, Inc. (the “Company”) received an executed waiver (the "Waiver") from a holder (the "Holder") of its Series C Convertible Preferred Stock (the “Series C Preferred Stock”). Section 5(a)(xv) of the certificate of designations for the Series C Preferred Stock provides that a Triggering Event occurs if any shares of the Series C Preferred Stock remain outstanding on or after September 30, 2026 (the “Specified Event”).

The Holder waived the Specified Event for the period beginning September 30, 2026 and continuing through and including December 31, 2027 (the "Waiver Period").

Solely to the extent attributable to the Specified Event during the period covered by the Waiver, the Holder waived the increase in the dividend rate to the default rate of 18% per annum (or the maximum lawful rate, if lower), related incremental dividends, and the right to a Triggering Event Conversion, including the 125% multiplier applied to the Conversion Amount (a 25% premium) and any related surviving alternate conversion period. The Waiver also relieves the Company of the related Triggering Event notice requirement and provides that the Specified Event is disregarded for purposes of the applicable Equity Conditions and the other consequences specified in the Waiver.

The Waiver does not affect the existing 120% calculation of the Conversion Amount, ordinary conversion rights, Alternate Optional Conversion rights and otherwise applicable dividend terms. It does not waive any other Triggering Event, breach or default or rights arising independently of the Specified Event. Upon expiration of the Waiver Period, the Specified Event and its consequences apply prospectively if any shares of Series C Preferred Stock remain outstanding, without reviving consequences waived for the applicable Waiver Period.

The Waiver became effective upon execution by the Holder and delivery to the Company. The Waiver applies only to the Holder’s rights with respect to the Series C Preferred Stock and does not bind any other holder the Company's preferred stock or waive rights under another instrument.

The foregoing description of the Waiver is qualified in its entirety by reference to its full text, filed as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.


Exhibit						Description
10.1						Form of waiver of September 30, 2026 Triggering Event relating to Series C Convertible Preferred Stock, effective September 23, 2026.
104						Cover Page Interactive Data File (formatted as Inline XBRL).

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.