SEC ownership of Nauticus Robotics, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001849820.

Comparable stake leader

Material Impact Fund II, L.P.

Disclosed value leader

TRANSOCEAN INTERNATIONAL Ltd

Comparable rows

30/50

Latest evidence

31 Jul 2026

Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
30 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
Material Impact Fund II, L.P.
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
31 Jul 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0001849820
Issuer location
Webster, TX

Ownership snapshot

Top shareholders of Nauticus Robotics, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Material Impact Fund II, ...
Disclosed value leader
TRANSOCEAN INTERNATIONAL Ltd
Comparable rows
30/50
Latest evidence
31 Jul 2026
13D/G 3/4/5 13F Lead comparable stake: 25% 20 rows are not safely comparable across share classes. 13D/G row: Material Impact Fund II, L.P. Showing 1-8 of 50 holder rows.

Quick read

Material Impact Fund II, L.P. leads the comparable SEC ownership view at 25%.

30 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Material Impact Fund II, L.P.'s linked filing trail.
Comparable ownership Top 5
Material Impact Fund II, L.P. 25%
TRANSOCEAN INTERNATIONAL Ltd 16%
RCB EQUITIES 1, LLC 11%
SZOP Opportunities Management LLC 9.9%
SLB LIMITED/NV 4.6%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Material Impact Fund II, L.P.
13D/G
Adam Sharkawy
25%
11,722,697 shares
$0 15 Apr 2026
TRANSOCEAN INTERNATIONAL Ltd
13D/G 3/4/5
Transocean International Limited · Former 10% Owner
16%
$6,183,308
2,150,716 shares
$0 28 Oct 2025
RCB EQUITIES 1, LLC
3/4/5 13D/G
10%+ Owner
11%
from 13D/G
$1,582,097
782,829 shares
-$65,761 01 Jun 2026
SZOP Opportunities Management LLC
13D/G
SZOP Opportunities I LLC
9.9%
$728,808
759,175 shares
$0 31 Jul 2026
SLB LIMITED/NV
3/4/5 13D/G
10%+ Owner · Schlumberger N.V. (Schlumberger Limited)
4.6%
from 13D/G
$5,557,069
8,682,920 shares
09 Sep 2022
William Xavier Kerber III
13D/G
KERBER WILLIAM XAVIER III
4.4%
$1,685,953
1,852,696 shares
$0 11 Aug 2025
Inkeverse Group Ltd
13D/G
4.1%
$282,596
264,108 shares
-$312,369 08 Jan 2025
Transocean Ltd.
13D/G 3/4/5
Former 10% Owner
0.1%
$9,182
6,421 shares
$0 28 Nov 2025
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$4,446,649.

Buys
$8,900
Insiders: 1
Sells
$4,455,549
Insiders: 5
Net
-$4,446,649
Shares: -4,344,383
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 10,000 Shares: 4,354,383
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 0 65,078 $0 $131,523 -$131,523
3-6 0 715 $0 $586 -$586
6-9 10,000 4,288,590 $8,900 $4,323,440 -$4,314,540
9-12 0 0 $0 $0 $0

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 37 reporting-owner rows connected to Nauticus Robotics, Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows
37
Largest Forms 3/4/5 holder
SLB LIMITED/NV
Net 12M change
-$4,446,648
Latest report
23 Jul 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
SLB LIMITED/NV 10%+ Owner $5,557,069 Mixed 09 Sep 2022
Nicolaus Radford Chief Executive Officer, Director $1,935,949 Filing P/S 31 Dec 2023
CleanTech Sponsor I LLC 10%+ Owner $1,660,800 Mixed 14 Jul 2021
Brian Isaac Dror 10%+ Owner $1,582,097 -$65,761 -4% Filing P/S 01 Jun 2026
RCB EQUITIES 1, LLC 10%+ Owner $1,582,097 -$65,761 -4% Filing P/S 01 Jun 2026
Jonas Grossman Director, 10%+ Owner $920,000 Mixed 14 Jul 2021
CleanTech Investments, LLC 10%+ Owner $920,000 Mixed 14 Jul 2021
Robert Douglas Christ President SeaTrepid $557,387 Mixed 22 Dec 2025
Elliot Spiro Director $401,256 Mixed 23 Jul 2026
John Symington General Counsel $233,100 Mixed 31 Mar 2025
Jim Bellingham Director $201,261 Mixed 23 Jul 2026
Adam Sharkawy Director $201,261 Mixed 23 Jul 2026
Donnelly A. Bohan Chief Operating Officer $75,212 Filing P/S 31 Dec 2023
Material Impact Partners II, LLC Director, Director by Deputization, 10%+ Owner $74,717 Mixed 31 Dec 2024
Bill Richardson Director $64,000 Mixed 14 Jul 2021
John W. Gibson Jr. CEO, Director $52,558 -$586 -1.1% Mixed 23 Feb 2026
Victoria Hay Interim CFO $48,312 Mixed 31 Mar 2025
Padmanabhan Rangan Chief Financial Officer $41,843 Mixed 16 May 2023
M. Dilshad Kasmani Chief LAO $41,651 Mixed 09 May 2023
Jon Najarian Director $32,000 Mixed 14 Jul 2021

Recent insider transactions for Nauticus Robotics, Inc.

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Adam Sharkawy KITT Restricted Stock Unit Award 48,241 48,241 23 Jul 2026 Direct
Jim Bellingham KITT Restricted Stock Unit Award 48,241 48,241 23 Jul 2026 Direct
Elliot Spiro KITT Restricted Stock Unit Award 48,241 48,241 23 Jul 2026 Direct
William Flores KITT Restricted Stock Unit Award 72,361 72,361 23 Jul 2026 Direct
Brian Isaac Dror KITT COMMON STOCK Sale -3.99% $65,761 $2.02 -32,539 782,829 01 Jun 2026 MANAGER OF RCB EQUITIES #1, LLC
Brian Isaac Dror KITT COMMON STOCK Conversion of derivative security 213.8% 555,556 815,368 01 Jun 2026 MANAGER OF RCB EQUITIES #1, LLC
Brian Isaac Dror KITT SENIOR SECURED TERM LOAN (09/23/2023, AS AMENDED) Conversion of derivative security 0 $5,300,000 01 Jun 2026 MANAGER OF RCB EQUITIES #1, LLC
Rcb Equities 1, Llc KITT COMMON STOCK Sale -3.99% $65,761 $2.02 -32,539 782,829 01 Jun 2026 Direct
Rcb Equities 1, Llc KITT COMMON STOCK Conversion of derivative security 213.8% 555,556 815,368 01 Jun 2026 Direct
Rcb Equities 1, Llc KITT SENIOR SECURED TERM LOAN (09/23/2023, AS AMENDED) Conversion of derivative security 0 $5,300,000 01 Jun 2026 Direct
Jim Bellingham KITT Common Stock Options Exercise 567.4% 2,162 2,543 27 May 2026 Direct
Jim Bellingham KITT Restricted Stock Unit Options Exercise 2,162 0 27 May 2026 Direct
Adam Sharkawy KITT Common Stock Options Exercise 567.4% 2,162 2,543 27 May 2026 Direct
Adam Sharkawy KITT Restricted Stock Unit Options Exercise -100% -2,162 0 27 May 2026 Direct
Elliot Spiro KITT Common Stock Options Exercise 587.5% 2,162 2,530 27 May 2026 Direct
Elliot Spiro KITT Restricted Stock Unit Options Exercise -100% -2,162 0 27 May 2026 Direct
William Flores KITT Common Stock Award 139.1% 2,522 4,335 27 May 2026 Direct
William Flores KITT Restricted Stock Unit Options Exercise -100% -2,522 0 27 May 2026 Direct
John W. Gibson Jr. KITT Common Stock Sale -5.08% $586 $0.8200 -715 13,351 24 Feb 2026 Direct
John W. Gibson Jr. KITT Common Stock Options Exercise 18.2% 2,161 14,066 23 Feb 2026 Direct
John W. Gibson Jr. KITT Restricted Stock Units Options Exercise -50% -2,161 2,160 23 Feb 2026 Direct
Robert Douglas Christ KITT Common Stock Other 671,551 671,551 22 Dec 2025 Shares held by SeaTrepid International LLC
TRANSOCEAN INTERNATIONAL Ltd KITT Common Stock, par value U.S. $0.0001 Sale -99.7% $2,062,358 $1.02 -2,021,920 6,421 03 Dec 2025 Direct
Transocean Ltd. KITT Common Stock, par value U.S. $0.0001 Sale -99.7% $2,062,358 $1.02 -2,021,920 6,421 03 Dec 2025 By Transocean International Limited
TRANSOCEAN INTERNATIONAL Ltd KITT Common Stock, par value U.S. $0.0001 Sale -1.59% $24,301 $0.7400 -32,839 2,028,341 02 Dec 2025 Direct
Transocean Ltd. KITT Common Stock, par value U.S. $0.0001 Sale -1.59% $24,301 $0.7400 -32,839 2,028,341 02 Dec 2025 By Transocean International Limited
TRANSOCEAN INTERNATIONAL Ltd KITT Common Stock, par value U.S. $0.0001 Sale -2.89% $49,694 $0.8100 -61,351 2,061,180 01 Dec 2025 Direct
Transocean Ltd. KITT Common Stock, par value U.S. $0.0001 Sale -2.89% $49,694 $0.8100 -61,351 2,061,180 01 Dec 2025 By Transocean International Limited
TRANSOCEAN INTERNATIONAL Ltd KITT Common Stock, par value U.S. $0.0001 Sale -1.31% $25,366 $0.9000 -28,185 2,122,531 28 Nov 2025 Direct
Transocean Ltd. KITT Common Stock, par value U.S. $0.0001 Sale -1.31% $25,366 $0.9000 -28,185 2,122,531 28 Nov 2025 By Transocean International Limited
William Flores KITT Common Stock Purchase 222.2% $8,900 $0.8900 10,000 14,501 25 Nov 2025 Direct
Transocean Inc KITT Common Stock, par value U.S. $0.0001 Conversion of derivative security 33395% 2,144,295 2,150,716 28 Oct 2025 Direct
Transocean Inc KITT Convertible Senior Secured Term Loan 2023 Conversion of derivative security 0 0 28 Oct 2025 Direct
Transocean Ltd. KITT Common Stock, par value U.S. $0.0001 Conversion of derivative security 33395% 2,144,295 2,150,716 28 Oct 2025 By Transocean International Limited
Transocean Ltd. KITT Convertible Senior Secured Term Loan 2023 Conversion of derivative security 0 0 28 Oct 2025 By Transocean International Limited
* marks a reported price that did not pass the local price check.
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