SCHEDULE Filed 2025-03-17 Event 2025-03-10 SEC 0001594543-25-000004 →

KERBER WILLIAM XAVIER III → Nauticus Robotics, Inc. KITTW

Stake: 5.10% Shares: 1,542,696 CUSIP: 63911H207 Class: Common Stock

Item 4 — Purpose of Transaction

Since Mr. Kerber's last amendment No. 1 dated February 7, 2025, he has made purchases of 931,204 shares of the issuer's Common Stock. As of March 10, 2025, Mr. Kerber beneficially owned 1,542,696 shares or 5.1% of the outstanding Common Stock calculated based on the 30,185,791 shares reported in the Issuer's S-3 statement dated February 3, 2025.

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

9 13D/G filings on this issuer

8 other filings besides this one

Filer Track Record

5 filings by this filer

4 other filings in the data moat

Short Interest · settle 2026-07-15

DTC 1.31

100,625 shares short · -21.4% vs prior

Post-Filing Returns · since 2025-03-10 on KITTW

+1 day

0.0%

+5 days

0.0%

+30 days

0.0%

+60 days

0.0%

+90 days

0.0%

+180 days

0.0%

Anchor price 0.02 on closest trading day on/after 2025-03-10. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Nauticus Robotics, Inc.

Filed	Form	Filer	Stake	Shares
2026-07-24	SCHEDULE 13G	RCB EQUITIES 1, LLC	—	—	view →
2025-10-28	SCHEDULE	Material Impact Fund II, L.P.	21.50%	3,137,615	view →
2025-08-13	SCHEDULE	KERBER WILLIAM XAVIER III	4.40%	1,852,696	view →
2025-02-25	SCHEDULE	Material Impact Fund II, L.P.	18.60%	6,866,659	view →
2025-02-07	SCHEDULE	KERBER WILLIAM XAVIER III	2.00%	611,492	view →
2025-02-06	SCHEDULE	Inkeverse Group Ltd	4.10%	264,108	view →
2024-04-08	SC	SCHLUMBERGER LIMITED/NV	—	—	view →
2022-09-23	SC	TRANSOCEAN INC	—	—	view →

Other Filings by KERBER WILLIAM XAVIER III

Filed	Form	Issuer	Stake	Shares
2026-05-14	SCHEDULE 13D/A	Palladyne AI Corp. PDYNW	—	2,366,314	view →
2025-08-13	SCHEDULE	Nauticus Robotics, Inc. KITTW	4.40%	1,852,696	view →
2025-02-07	SCHEDULE	Nauticus Robotics, Inc. KITTW	2.00%	611,492	view →
2025-01-02	SCHEDULE	Palladyne AI Corp. PDYNW	7.60%	2,292,482	view →

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