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Offerings // Fusion Fuel Green PLC

HTOO offering history

Every offering-related filing in Fusion Fuel Green PLC’s recent SEC record — registrations (announced capacity) kept separate from pricing documents (executed sales). Reviewed 334 filings back to Aug 5, 2020.

Last executed offering
Jul 29, 2026
424B5 — priced deal (shares or notes)
Last registration (announced)
Mar 18, 2026
F-3 — capacity, not a sale
Executed, last 12 months
1
424B pricings + 8-K 3.02 sales
Registered, last 12 months
4
S-1/S-3/F-series registrations
DateFilingWhat it means
Jul 29, 2026424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Mar 24, 2026424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Mar 23, 2026EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Mar 18, 2026F-3 →REGISTEREDF-3 registration — capacity to sell shares, not a sale yet
Feb 12, 2026424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Feb 11, 2026EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Feb 6, 2026F-3 →REGISTEREDF-3 registration — capacity to sell shares, not a sale yet
Dec 12, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Nov 21, 2025F-3/A →REGISTEREDF-3/A registration — capacity to sell shares, not a sale yet
Aug 15, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Aug 14, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Aug 8, 2025F-3 →REGISTEREDF-3 registration — capacity to sell shares, not a sale yet
Aug 5, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jul 28, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Jun 13, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jun 13, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Jun 12, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Jun 12, 2025EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
May 23, 2025F-3/A →REGISTEREDF-3/A registration — capacity to sell shares, not a sale yet
May 23, 2025F-3/A →REGISTEREDF-3/A registration — capacity to sell shares, not a sale yet
May 16, 2025424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
May 13, 2025F-3 →REGISTEREDF-3 registration — capacity to sell shares, not a sale yet
Mar 28, 2025F-3 →REGISTEREDF-3 registration — capacity to sell shares, not a sale yet
Mar 28, 2025F-3 →REGISTEREDF-3 registration — capacity to sell shares, not a sale yet
Mar 12, 2025424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
May 22, 2024424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
May 8, 2024424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
May 3, 2024EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
May 1, 2024F-3/A →REGISTEREDF-3/A registration — capacity to sell shares, not a sale yet
Mar 22, 2024F-3/A →REGISTEREDF-3/A registration — capacity to sell shares, not a sale yet
Feb 6, 2024F-3 →REGISTEREDF-3 registration — capacity to sell shares, not a sale yet
Jul 10, 2023424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
Aug 5, 2022EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
Jun 6, 2022424B5 →EXECUTEDShelf takedown priced — shares or notes (small-caps: usually shares; open the filing to confirm)
May 13, 2022EFFECT →EFFECTIVESEC declared a registration effective — selling can begin
May 5, 2022F-3 →REGISTEREDF-3 registration — capacity to sell shares, not a sale yet
Mar 3, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Feb 15, 2022424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Nov 17, 2021424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
Aug 17, 2021424B3 →UPDATEProspectus update — often a resale registration, not necessarily new capital
HTOO offering-related filings from SEC EDGAR, newest first (capped at 40). Each links to the original document.

Two honest limits. (1) A 424B takedown can price shares or notes— EDGAR’s metadata doesn’t say which, so open the document: large investment-grade filers use these mostly for bond deals (no dilution), small-caps mostly for shares. (2) At-the-market (ATM) programs sell shares gradually and individual sales are not separately filed — the visible footprint is the enabling shelf and its 424B5; actual ATM share counts surface later in the 10-Q/10-K share count. Educational information from public filings, not investment advice.

Is a shelf active now? →Do they need money? →Red flags →Full HTOO workspace →
HTOO offering FAQ

When did HTOO last execute an offering?

Per SEC filings, Fusion Fuel Green PLC's most recent priced offering document is a 424B5 filed 2026-07-29. Note a 424B takedown can price shares or notes (debt) — the linked document says which.

When did HTOO last announce or register an offering?

The most recent registration is a F-3 filed 2026-03-18. A registration is capacity to sell shares — not a sale.

Does an offering always mean dilution?

Registered direct offerings and shelf takedowns issue new shares and dilute existing holders. Resale registrations (424B3/B7) let existing holders sell and do not create new shares. Secondary sales by insiders also do not dilute. Each row here is labeled with what it is.