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HTOO 424B3: SEC filing

Fusion Fuel Green PLC

Filed with the SEC on · accession 0001493152-26-051790

HTOO filed a 424B3 (prospectus (offering)) with the SEC on Nov 13, 2026. The final terms of an offering of shares or bonds. The stock moved +2.6% by the first close after the filing.

Summary of the filing

Fusion Fuel Green PLC entered into warrant exchange agreements with several holders, cancelling existing August 2026 $3.50 warrants and issuing new warrants with significantly lower exercise prices ($0.50-$0.54) on a one-for-one basis, exercisable for cash until various dates in late 2026.

For details, click here →How to read a 424B3 →

Key details

Aggregate Class A Ordinary Shares underlying exchanged and new warrants$431K
Aggregate gross proceeds if all new warrants exercised for cash$226K
Original exercise price of exchanged August 2026 warrants$4
Exercise price of new warrants issued to Lantern$1
Exercise price of new warrants issued to Roxy Capital$1
Exercise price of new warrants issued to Bower Four$1
Exercise price of new warrants issued to Milewski$1
Exercise price of new warrants issued to RJL18$1
Exercise price of new warrants issued to Farb$1
Exercise price of new warrants issued to Vayo$1
IssuerFusion Fuel Green PLC
Warrant holderLantern Management Fund
Warrant holderRoxy Capital Corp.
Warrant holderBower Four Capital Corp.
Warrant holderLeede Financial Inc. ITF Anthony Milewski
Warrant holderRJL18 Capital LP
Warrant holderVayo Ventures Ltd.
Warrant holderAnthony Milewski
Warrant holderDaniel Farb

How HTOO stock reacted

Close before

$1.17

Nov 12, 2026

First close after

+2.56%

$1.20

5 trading days

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Since filing

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Frequently asked questions

What did HTOO file with the SEC on Nov 13, 2026?

HTOO filed a 424B3 (SEC filing). Fusion Fuel Green PLC entered into warrant exchange agreements with several holders, cancelling existing August 2026 $3.50 warrants and issuing new warrants with significantly lower exercise prices ($0.50-$0.54) on a one-for-one basis, exercisable for cash until various dates in late 2026.

How do I read a 424B3?

The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B3 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did HTOO stock react to this filing?

HTOO closed at $1.17 before the filing and $1.20 on Nov 13, 2026 (+2.56%).

Other HTOO SEC filings

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