13D Filings
Nauticus Robotics, Inc.
KITT
Amendment
Ownership

4.40%

Total Shares

1,852,696

Issuer CIK

1849820

CUSIP

63911H207

Event Date

Aug 10, 2025

Accepted

Aug 13, 2025, 03:26 PM

Reporting Persons (1)
NameType% of ClassAggregateSole VotingShared Voting
KERBER WILLIAM XAVIER III
Individual
4.40%1,852,6961,852,6960
Disclosure Items (6)

Security Title

Common Stock

Issuer Name

Nauticus Robotics, Inc.

Issuer Address

17146 FEATHERCRAFT LANE, WEBSTER, TX, 77598

Filing Persons

WILLIAM XAVIER KERBER III

Business Address

3917 NE 104TH ST Oklahoma City, OK. 73131

Principal Occupation

CEO Human Mode LLC 3917 NE 104TH ST Oklahoma City, OK. 73131

Convictions

During the past 5 years, Mr. Kerber has not been a party to any civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding such person was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

Citizenship

United States

All of the shares of Common Stock were acquired using Mr. Kerber's personal funds. No loans were involved in these purchases.

As of the Issuer's recent 10-Q filing dated August 11, 2025 the Issuer stated total outstanding Common Stock of 42,267,643 shares. Mr. Kerber beneficially owns 1,852,696 shares or 4.4% of of the Issuer's outstanding Common Stock and has ceased to be a beneficial owner of five percent or more as of the date of the Issuer's 10-Q filing dated August 11, 2025.

Percentage of Class

As of the date of this Amendment No. 4, Mr. Kerber beneficially owns 1,852,696 shares or 4.4% of the Issuer's outstanding shares of Common Stock. The beneficial ownership percentages used in this Schedule are calculated based on the 42,267,643 shares of Common Stock of the Issuer outstanding as stated in the Issuer's recent 10-Q filing dated August 11, 2025.

Number of Shares

As of the date of this Amendment No. 4, Mr. Kerber has sole voting and dispositive power of the 1,852,696 shares or 4.4 % of the Issuer's Common Stock.

Transactions

Mr. Kerber has not effected any transactions in the Common Stock during the past 60 days or since his most recent Schedule 13D filing dated April 10, 2025.

Date of 5% Ownership

Mr. Kerber ceased to be a beneficial owner of five percent or more of the Issuer's Common Stock as of the Issuer's most recent 10-Q filing dated August 11, 2025.

As of the filing date of this Amendment, Mr. Kerber is not involved in any contracts, arrangements, under standings or relationships related to any securities of the Issuer.

Nauticus Robotics, Inc. — Schedule 13D | 13D Filings