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NASDAQ · Technology

Fusion Fuel Green PLC (HTOO)

Its latest periodic report to the SEC is the annual report (foreign issuer) (20-F) filed on May 7, 2026.

What Fusion Fuel Green PLC does

Fusion Fuel Green PLC is registered with the SEC under industry code SIC 3590 (Misc Industrial & Commercial Machinery & Equipment). Its shares trade on NASDAQ under the ticker HTOO.

Key figures

Full financial statements: income, balance sheet and cash flow

Latest SEC filings

What Fusion Fuel Green PLC has filed recently, newest first. Each links to the original document on SEC EDGAR.

1. September 25, 2026
   Foreign issuer update 6-K
2. September 25, 2026
   Foreign issuer update 6-K
3. September 23, 2026
   Securities offering prospectus 424B3
4. September 15, 2026
   Foreign issuer update 6-K
5. September 11, 2026
   Form F-3 filing F-3
6. September 10, 2026
   Foreign issuer update 6-K
7. September 4, 2026
   Foreign issuer update 6-K
8. August 20, 2026
   Foreign issuer update 6-K
9. August 12, 2026
   Foreign issuer update 6-K
10. August 11, 2026
    Foreign issuer update (amended) 6-K/A

Recent insider filings (Forms 3, 4 and 144): 10, the latest on March 24, 2026. Insider transactions on SEC

Who owns HTOO

Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.

5% holders

Anyone who owns more than 5% of a class of shares must say so on Schedule 13D (if they may seek to influence the company) or 13G (a passive holder). The latest filing of each holder is shown: 13G filings of the last 2 years, 13D of the last 3.

Latest filings below 5%: MAK Capital One L.L.C. 2.54% (December 11, 2024).

Largest institutional holders

No Form 13F positions imported for this company yet.

Insiders

Reported holdings of insiders who filed a Form 4 in the last 12 months: the shares each one held after their latest reported transaction. This is not the total held by all insiders.

We have not read this company's Form 4 filings yet.

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about HTOO

What does Fusion Fuel Green PLC do?

Fusion Fuel Green PLC is registered with the SEC under industry code SIC 3590 (Misc Industrial & Commercial Machinery & Equipment). Its shares trade on NASDAQ under the ticker HTOO.

Is Fusion Fuel Green PLC profitable?

Yes. In fiscal 2024 it reported net income of $4M.

When did Fusion Fuel Green PLC last report?

Its most recent periodic report is the annual report (foreign issuer) (20-F) filed on May 7, 2026. It covers the period to December 31, 2025. Its newest filing of any kind is the foreign issuer update from September 25, 2026.

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Where the numbers come from

Financial figures are the values Fusion Fuel Green PLC tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.