HTOO · Fusion Fuel Green PLC · Shareholders & Ownership
Every disclosed holder of HTOO in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns HTOO
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: shares outstanding cannot be set against these holders.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 21,899 | — |
| Insiders (Forms 3, 4, 5) | 0 | — |
| 13D/G-only blocks | 103,705,454 | — |
| Registered funds (N-PORT, not summed) | 0 | — |
% Out is unavailable: a foreign private issuer reports ordinary shares, a different unit from the listed shares.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of HTOO
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
Fusion Fuel Green PLC
13D
CIK 1819794 · Holding company · Aug 1, 2025
Item 4 purpose: Passive investment
|
100,312,334 | ||
| 2 |
|
1,749,184 | ||
| 3 |
John-Paul Backwell
13D
CIK 1958158 · Unknown · Nov 26, 2025
|
400,000 | ||
| 4 |
|
350,519 | ||
| 5 |
|
343,709 | ||
| 6 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
17,682 | ||
| 7 |
MAK CAPITAL ONE LLC
13G
CIK 1385702 · Registered investment adviser · Dec 4, 2024
Rule 13d-1(c), passive investor
|
12,623 | ||
| 8 |
|
9,586 | ||
| 9 |
Figueira de Chaves Frederico
Insider
CIK 2093053 · Mar 18, 2026
Director, Interim CFO, issuer-wide, not summed
|
6,352 | ||
| 9.1 |
Frederico Figueira de Chaves
13D
CIK 2093053 · Unknown · Nov 26, 2025
Item 4 purpose: Other, Passive investment
|
418,386 | ||
| 10 |
|
2,911 | ||
| 11 |
Ilustrato Pictures International Inc.
Insider
CIK 1496383 · Oct 3, 2025
10% Owner, issuer-wide, not summed
|
1,502 | ||
| 11.1 |
Ilustrato Picture International Inc. (“ILUS”) 272450645
13G
CIK 1496383 · Unknown · Nov 26, 2024
Rule 13d-1(c), passive investor
|
109,113 | ||
| 12 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,015 | ||
| 13 |
SBI Securities Co., Ltd.
13F
CIK 1851815 · Non-US institution · Sep 30, 2026
|
248 | ||
| 14 |
Ameritas Advisory Services, LLC
13F
CIK 1901275 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
15 | ||
| 15 |
CREATIVE FINANCIAL DESIGNS INC /ADV
13F
CIK 819864 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
11 | ||
| 16 |
NATIONAL BANK OF CANADA /FI/
13F
CIK 926171 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
7 | ||
| 17 |
ASSETMARK, INC
13F
CIK 1344551 · Registered investment adviser · Sep 30, 2026
|
6 | ||
| 18 |
JONES FINANCIAL COMPANIES LLLP
13F
CIK 815917 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3 | ||
| 19 |
GROUP ONE TRADING LLC
13F
CIK 932540 · Broker-dealer · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.