UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K/A

(Amendment No. 1)

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of: March, 2026.

Commission File Number: 001-39789

Fusion Fuel Green PLC

(Translation of registrant’s name into English)

9 Pembroke Street Upper

Dublin D02 KR83

Ireland

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

On March 25, 2026, Fusion Fuel Green PLC, an Irish public limited company (the “Company”), furnished a Report on Form 6-K (the “Original Form 6-K”) with the U.S. Securities and Exchange Commission (the “SEC”) which included a press release (the “Prior Press Release”) relating to a certain uranium royalty asset held by Royal Uranium Inc., a company incorporated under the laws of British Columbia, Canada (“Royal Uranium”). A copy of the Prior Press Release was attached to the Original Form 6-K as Exhibit 99.1. On March 27, 2026, the Company issued a press release intended to correct certain information included in the Prior Press Release (the “Correcting Press Release”). This Amendment to Form 6-K is being furnished to amend the Original Form 6-K to include a copy of the Correcting Press Release, which is furnished as Exhibit 99.2 to this Report on Form 6-K.

As previously disclosed in a Report on Form 6-K furnished with the SEC on February 18, 2026, the Company entered into a Share Exchange Agreement (the “Share Exchange Agreement”), dated as of February 18, 2026, among the Company and certain shareholders of Royal Uranium, pursuant to which the Company agreed to acquire up to 100% of the issued and outstanding shares in the capital of Royal Uranium. The closing of the transactions contemplated under the Share Exchange Agreement remain subject to certain closing conditions.

Forward-Looking Statements

The press releases attached as Exhibit 99.1 and Exhibit 99.2 hereto and the statements contained therein include “forward-looking statements” within the meaning of Section 27A of the U.S. Securities Act of 1933, as amended, and Section 21E of the U.S. Securities Exchange Act of 1934, as amended, which statements involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or the Company’s future financial or operating performance. In some cases, you can identify these statements because they contain words such as “may,” “will,” “believes,” “expects,” “anticipates,” “estimates,” “projects,” “intends,” “should,” “seeks,” “future,” “continue,” “plan,” “target,” “predict,” “potential,” or the negative of such terms, or other comparable terminology that concern the Company’s expectations, strategy, plans, or intentions. Forward-looking statements relating to expectations about future results or events are based upon information available to the Company as of today’s date and are not guarantees of the future performance of the Company, and actual results may vary materially from the results and expectations discussed. Such forward-looking statements include, but are not limited to, statements regarding the Company’s planned acquisition of a controlling interest in Royal Uranium and its expectation to gain royalty exposure to uranium exploration activity across certain projects without additional cost to itself or the royalty holder, and statements regarding planned exploration activities at certain uranium projects. The Company’s expectations and beliefs regarding these matters may not materialize, and actual results in future periods are subject to risks and uncertainties that could cause actual results to differ materially from those projected, including, without limitation, the ability of the parties to the Share Exchange Agreement to complete the transaction, the Company’s ability to integrate Royal Uranium’s assets into its business, the ability of the parties to obtain Irish regulatory approval and any other required third-party consents and approvals in connection with the transaction, obtain the approval of the Company’s shareholders, and to meet all other closing conditions; the realization of revenues from the assets of Royal Uranium, including its uranium and natural gas royalties, which may depend on, among other things, the commercial development of uranium and natural gas deposits, the receipt and maintenance of exploration, mining, and environmental permits and approvals by the operators of the underlying properties, regulatory approval, and market demand for uranium and natural gas as sources of energy; volatility in uranium and natural gas commodity prices, which directly affect the potential value of net smelter return and other royalty interests, the risk that operators of royalty-bearing properties may delay, suspend, or abandon exploration or development activities due to insufficient funding, unfavorable economic conditions, technical challenges, or regulatory obstacles; the possibility that exploration activities, including those authorized under recently obtained permits, may not result in the discovery of commercially viable mineral deposits or hydrocarbon reserves; the dependence of the Company on third-party operators over whom it has no operational control, including decisions regarding the pace, scope, and method of exploration and development; the risk that changes in mining, environmental, or energy laws and regulations in the jurisdictions where the royalty assets are located, including Canada, Colombia, and Argentina, which may adversely affect the feasibility or economics of the underlying projects; political, economic, and social risks associated with operating in foreign jurisdictions, including currency controls, expropriation, nationalization, and changes in fiscal regimes; the risk that royalty agreements may be subject to disputes regarding their scope, enforceability, or the calculation of permitted deductions from gross revenues; competition from existing or new offerings that may emerge; impacts from strategic changes to the Company’s business on net sales, revenues, income from continuing operations, or other results of operations; the Company’s ability to obtain sufficient funding to maintain operations and develop additional services and offerings; and the risks and uncertainties described under Item 3. “Key Information – D. Risk Factors” and elsewhere in the Company’s Annual Report on Form 20-F filed with the SEC on May 9, 2025 (the “Annual Report”), and other filings with the SEC. Should any of these risks or uncertainties materialize or should the underlying assumptions about the Company’s business and the commercial markets in which the Company operates prove incorrect, actual results may vary materially from those described as anticipated, estimated or expected in the Annual Report. All subsequent written and oral forward-looking statements concerning the Company or other matters and attributable to the Company or any person acting on its behalf are expressly qualified in their entirety by the cautionary statements above. The Company does not undertake any obligation to publicly update any of these forward-looking statements to reflect events or circumstances that may arise after the date hereof, except as required by law.

Exhibit No.		Description
99.1		Press Release dated March 25, 2026 (incorporated by reference to Report on Form 6-K filed on March 25, 2026)
99.2		Press Release dated March 27, 2026

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Fusion Fuel Green PLC
	(Registrant)

Date: March 27, 2026	/s/ John-Paul Backwell
	John-Paul Backwell
	Chief Executive Officer

Fusion Fuel Green PLC 6-K/A