IsoEnergy Ltd. (ISOU) files 6-K on 2025 Athabasca Basin and Larocque East drilling

Rhea-AI Filing Summary

IsoEnergy Ltd. filed a Form 6-K as a foreign private issuer, mainly to furnish a news release dated December 3, 2025. The release provides a 2025 Athabasca Basin exploration update and notes preparations to launch winter exploration programs, including drilling at the Larocque East project.

Form 6-K: How Foreign Companies Report to the SEC →

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2025

Commission File Number 001-42611

ISOENERGY LTD.

(Exact name of Registrant as specified in its charter)

N/A

(Translation of Registrant’s name into English)

217 Queen Street West, Suite 303

Toronto, Ontario

M5V 0R2

Tel: 1-833-572-2333

(Address of principal executive offices)

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  ☒

EXHIBIT INDEX

Exhibit Number	Description
99.1	News Release dated December 3, 2025 - IsoEnergy Provides 2025 Athabasca Basin Exploration Update and Prepares to Launch Winter Exploration Programs Including Drilling at Larocque East

SIGNATURES

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

				ISOENERGY LTD.
Date: December 3, 2025				By:		/s/ Graham du Preez
						Name: Graham du Preez
						Title: Chief Financial Officer

FAQ

What does IsoEnergy Ltd. (ISOU) report in this Form 6-K?

IsoEnergy Ltd. uses this Form 6-K to furnish a news release dated December 3, 2025. The release covers a 2025 Athabasca Basin exploration update and upcoming winter exploration programs, including drilling at Larocque East.

What is the main focus of IsoEnergy’s December 3, 2025 news release?

The news release focuses on a 2025 exploration update in the Athabasca Basin. It also highlights preparation for winter exploration programs, which will include drilling activities at the Larocque East property.

Which project is specifically mentioned in IsoEnergy’s 2025 exploration update?

The filing notes that IsoEnergy’s winter exploration programs will include drilling at the Larocque East project. This project is referenced within the broader 2025 Athabasca Basin exploration update provided in the news release.

What type of issuer is IsoEnergy Ltd. (ISOU) under U.S. securities rules?

IsoEnergy Ltd. is identified as a foreign private issuer under U.S. securities regulations. As such, it files current information on Form 6-K, rather than on domestic forms like Form 8-K.

Which annual report form does IsoEnergy Ltd. file with the SEC?

The document indicates that IsoEnergy Ltd. files its annual reports under cover of Form 20-F. This is the standard annual reporting form used by many foreign private issuers listed in U.S. markets.

Who signed IsoEnergy Ltd.’s December 2025 Form 6-K submission?

The Form 6-K was signed on behalf of IsoEnergy Ltd. by Graham du Preez. He is identified in the document as the company’s Chief Financial Officer at the time of signing.