Fusion Fuel Green PLC
Fusion Fuel Green PLC (HTOO) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · HTOO · as of Mar 31, 2025
Ownership Breakdown
17
Institutional Holders
▼ 6 vs Q4
$197,382
Total Inst. Value
▼ $102,840 vs Q4
1.81M
Shares Outstanding
freeFloat 75.38%
762,016
13F Shares Held
▼ 329,546 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
HTOO largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
MACQUARIE GROUP LTD electrical industrial apparatus | 557.4K | 1.19% | 1.19% | $144.49M | Aug 14, 2025 | ▼ 1.1K |
BOOTHBAY FUND MANAGEMENT, LLC electrical industrial apparatus | 104.3K | 22.31% | 22.31% | $27.03M | May 15, 2025 | — held |
CONSOLIDATED PORTFOLIO REVIEW CORP electrical industrial apparatus | 53.7K | 11.49% | 11.49% | $13.93M | Apr 23, 2025 | — held |
XTX TOPCO LTD electrical industrial apparatus | 40.8K | 8.73% | 8.73% | $10.53M | May 8, 2025 | ▲ 11.3K |
UBS GROUP AG electrical industrial apparatus | 31.4K | 6.71% | 6.71% | $8.13M | May 13, 2025 | ▼ 141.0K |
MORGAN STANLEY electrical industrial apparatus | 18.5K | 3.95% | 3.95% | $4.79M | May 15, 2025 | ▲ 299 |
CITADEL ADVISORS LLC electrical industrial apparatus | 15.9K | 3.39% | 3.39% | $4.09M | May 15, 2025 | ▼ 97.9K |
CRESCENT GROVE ADVISORS, LLC electrical industrial apparatus | 15.0K | 3.21% | 3.21% | $3.89M | Apr 24, 2025 | — held |
GROUP ONE TRADING, L.P. electrical industrial apparatus | 11.3K | 2.42% | 2.42% | $2.92M | May 14, 2025 | ▲ 11.1K |
SBI SECURITIES CO., LTD. electrical industrial apparatus | 8.8K | 1.88% | 1.88% | $2.28M | May 2, 2025 | ▲ 6.7K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
4
Increased
+29.4K shares2
New Positions
first time holders5
Decreased
−276.7K shares8
Sold Out
fully exitedNet shares change (top 50)
247.3K
+29.4K / −276.7K
Net new holders
-7
2 new / 8 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
HTOO insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Ilustrato Pictures International Inc. 10 percent owner | Oct 3, 2025 | D-Return | 500 | $2250.00 | $1.13M | 2.0K | Form 4 ↗ |
Ilustrato Pictures International Inc. 10 percent owner | Oct 3, 2025 | D-Return | 500 | $2500.00 | $1.25M | 1.5K | Form 4 ↗ |
Ilustrato Pictures International Inc. 10 percent owner | Oct 1, 2025 | D-Return | 500 | $2182.00 | $1.09M | 2.5K | Form 4 ↗ |
Ilustrato Pictures International Inc. 10 percent owner | Sep 29, 2025 | D-Return | 500 | $2261.40 | $1.13M | 3.0K | Form 4 ↗ |
Ilustrato Pictures International Inc. 10 percent owner | Sep 25, 2025 | D-Return | 500 | $2500.00 | $1.25M | 5.1K | Form 4 ↗ |
Ilustrato Pictures International Inc. 10 percent owner | Sep 25, 2025 | D-Return | 500 | $2750.00 | $1.38M | 4.6K | Form 4 ↗ |
Ilustrato Pictures International Inc. 10 percent owner | Sep 26, 2025 | D-Return | 500 | $2387.95 | $1.19M | 4.1K | Form 4 ↗ |
Ilustrato Pictures International Inc. 10 percent owner | Sep 26, 2025 | D-Return | 614 | $3004.93 | $1.85M | 3.5K | Form 4 ↗ |
Ilustrato Pictures International Inc. 10 percent owner | Sep 23, 2025 | D-Return | 1,000 | $5125.00 | $5.13M | 8.6K | Form 4 ↗ |
Ilustrato Pictures International Inc. 10 percent owner | Sep 24, 2025 | D-Return | 500 | $2500.00 | $1.25M | 8.1K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Fusion Fuel Green PLC (HTOO) is primarily owned by institutional investors, who hold approximately 42.1% of total shares outstanding. Company insiders own approximately 24.62%, while retail and public investors account for the remaining 33.29%.
The largest institutional shareholder of Fusion Fuel Green PLC is MACQUARIE GROUP LTD, holding approximately 557,437 shares — equal to 1.19% of outstanding shares — as of March 31, 2025.
A total of 17 institutional investors currently hold HTOO stock, with a combined institutional value of approximately $197,382 as of the most recent 13F filing period.
Frequently asked questions
HTOO ownershipFusion Fuel Green PLC (HTOO) is primarily owned by institutional investors, who hold approximately 42.1% of shares. The largest shareholder is MACQUARIE GROUP LTD with a 1.19% stake. Company insiders hold 24.62%. Data sourced from SEC Form 13F as of March 31, 2025.