Comparable stake leader
Material Impact Fund II, L.P.
SEC ownership of Nauticus Robotics, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001849820.
Disclosed value leader
TRANSOCEAN INTERNATIONAL Ltd
Comparable rows
25/50
Latest evidence
15 Apr 2026
- Symbol
- KITT, KITTW on Nasdaq
- Ownership evidence mix
- 13D/G, 3/4/5, and 13F
- Largest current holder
- Material Impact Fund II, L.P.
- Latest large-stake holder
- Material Impact Fund II, L.P.
- Latest evidence date
- 15 Apr 2026
- CIK
- 0001849820
- Location
- Webster, TX
Ownership snapshot
2 signals
Issuer identity
2 identity fields
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
25/50
Latest evidence
15 Apr 2026
13D/G
3/4/5
13F
Lead comparable stake: 25%
25 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%.
25 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.
Comparable ownership
Top 5
Material Impact Fund II, L.P.
25%
TRANSOCEAN INTERNATIONAL Ltd
16%
SLB LIMITED/NV
4.6%
William Xavier Kerber III
4.4%
Inkeverse Group Ltd
4.1%
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 |
| 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 |
| Robert Douglas Christ |
3/4/5
President SeaTrepid
|
2.7%
|
$557,387
671,551 shares
|
— | 22 Dec 2025 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
1.4%
|
$171,110
343,103 shares
|
— | 31 Mar 2026 |
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: -$4,315,126.
Buys
$8,900
Insiders: 1
Sells
$4,324,026
Insiders: 3
Net
-$4,315,126
Shares: -4,279,305
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 10,000
Shares: 4,289,305
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 4,110,233 | $0 | $4,173,905 | -$4,173,905 |
| 6-9 | 10,000 | 179,072 | $8,900 | $150,122 | -$141,222 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 35 reporting-owner rows connected to Nauticus Robotics, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
35
Largest current holder
SLB LIMITED/NV
Net 12M change
-$4,315,126
Latest report
07 Apr 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 | ||
| 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 | $428,510 | Mixed | 25 Jul 2025 | ||
| John Symington | General Counsel | $233,100 | Mixed | 31 Mar 2025 | ||
| Adam Sharkawy | Director | $228,510 | Mixed | 25 Jul 2025 | ||
| Jim Bellingham | Director | $228,510 | Mixed | 25 Jul 2025 | ||
| 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 | ||
| John Yamokoski | Chief Technology Officer | $22,314 | Mixed | 31 Dec 2024 | ||
| Lisa J. Porter | Director | $21,507 | Mixed | 07 Nov 2023 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |||
| William Flores | KITT | Restricted Stock Units | Award | 181,525 | 181,525 | 25 Jul 2025 | Direct | |||
| Adam Sharkawy | KITT | Restricted Stock Units | Award | 155,593 | 155,593 | 25 Jul 2025 | Direct | |||
| Elliot Spiro | KITT | Restricted Stock Units | Award | 155,593 | 155,593 | 25 Jul 2025 | Direct | |||
| Jim Bellingham | KITT | Restricted Stock Units | Award | 155,593 | 155,593 | 25 Jul 2025 | Direct |
* marks a reported price that did not pass the local price check.