Fusion Fuel Green PLC
Fusion Fuel Green PLC (HTOOW) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · HTOOW · as of Sep 30, 2025
Ownership Breakdown
5
Institutional Holders
▲ 4 vs Q2
$3,467
Total Inst. Value
▲ $2,923 vs Q2
1.81M
Shares Outstanding
freeFloat 91.51%
144,252
13F Shares Held
▲ 90,370 vs Q2
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
HTOOW largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 5 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
SUSQUEHANNA INTERNATIONAL GROUP, LLP electrical industrial apparatus | 80.2K | 54.85% | 54.85% | $1.86M | Nov 14, 2025 | NEW |
CITADEL ADVISORS LLC electrical industrial apparatus | 32.8K | 22.41% | 22.41% | $882,000 | Nov 14, 2025 | NEW |
WOLVERINE ASSET MANAGEMENT LLC electrical industrial apparatus | 18.6K | 12.74% | 12.74% | $432,000 | Oct 28, 2025 | ▼ 35.2K |
TWO SIGMA SECURITIES, LLC electrical industrial apparatus | 12.1K | 8.26% | 8.26% | $280,000 | Nov 14, 2025 | NEW |
UBS GROUP AG electrical industrial apparatus | 487 | 0.33% | 0.33% | $11,000 | Nov 13, 2025 | ▲ 487 |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
1
Increased
+487 shares3
New Positions
first time holders1
Decreased
−35.2K shares0
Sold Out
fully exitedNet shares change (top 50)
34.8K
+487 / −35.2K
Net new holders
+3
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
HTOOW 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 (HTOOW) is primarily owned by institutional investors, who hold approximately 8.0% of total shares outstanding. Company insiders own approximately 8.49%, while retail and public investors account for the remaining 83.55%.
The largest institutional shareholder of Fusion Fuel Green PLC is SUSQUEHANNA INTERNATIONAL GROUP, LLP, holding approximately 80,239 shares — equal to 54.85% of outstanding shares — as of September 30, 2025.
A total of 5 institutional investors currently hold HTOOW stock, with a combined institutional value of approximately $3,467 as of the most recent 13F filing period.
Frequently asked questions
HTOOW ownershipFusion Fuel Green PLC (HTOOW) is primarily owned by institutional investors, who hold approximately 8.0% of shares. The largest shareholder is SUSQUEHANNA INTERNATIONAL GROUP, LLP with a 54.85% stake. Company insiders hold 8.49%. Data sourced from SEC Form 13F as of September 30, 2025.