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6-K 1 ef20056465_6k.htm 6-K
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 of the
Securities Exchange Act of 1934

For the month of September 2025
Commission File Number: 001-41412

ioneer Ltd
(Translation of registrant’s name into English)

Suite 16.01, 213 Miller Street
North Sydney, NSW, 2060, Australia
(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
The following exhibits are filed as part of this Form 6-K:
Exhibit
Description


 
Press Release


SIGNATURE

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.
ioneer Ltd

(registrant)


Date: September 30, 2025
By:
 /s/ Ian Bucknell

Name: Ian Bucknell

Title:   Chief Financial Officer & Company Secretary


EX-99.1 2 ef20056465_ex99-1.htm EXHIBIT 99.1
Exhibit 99.1
 
Change in Financial Year End
 
25 September 2025 – Ioneer Ltd (“Ioneer”) (ASX: INR, NASDAQ: IONR) today announced that the Board of Directors of Ioneer Ltd (Ioneer) has resolved to change Ioneer’s financial year from 1 July - 30 June, to 1 January - 31 December.

The change is made in accordance with section 323D(2A) of the Corporations Act 2001 (Cth). The Board confirms that:


 •
Ioneer’s current financial year will end on 31 December 2025 which will be a six-month Transitional Financial Year (TY), beginning on 1 July 2025 and ending on 31 December 2025.
 

 •
Thereafter, Ioneer will adopt a twelve-month financial year, with the first commencing on 1 January 2026 and ending on 31 December 2026.
 

 •
The change in financial year requires Ioneer to, in respect of the TY:
 

 o
Lodge an additional annual report by March 2026.
 

 o
Hold an additional annual general meeting in May 2026 (TY 2026 AGM).

Ioneer will provide further details of the TY 2026 AGM closer to the date.

This announcement has been authorised by the Board of Directors of Ioneer Ltd.

--ENDS—

Investor Relations
Media Relations

 
Chad Yeftich
Ioneer USA Corporation
Daniel Francis
FGS Global (USA)
Investor Relations (USA)
T: +1 775 993 8563
E: ir@ioneer.com
Media Relations (AUS)
E: daniel.francis@fgsglobal.com
 







About Ioneer
 
Ioneer Ltd is an emerging lithium–boron producer and the 100% owner of the Rhyolite Ridge Lithium-Boron Project. Rhyolite Ridge is one of only a small number of lithium-boron ore deposits globally, and a linchpin project in Nevada’s burgeoning Lithium Loop.

Rhyolite Ridge closed a US$996 million loan with the U.S. Department of Energy Loan Programs Office under the Advanced Technology Vehicles Manufacturing program in January 2025. In October 2024, Ioneer received the final federal permit for the project from the Bureau of Land Management, concluding the formal federal permitting process which began in early 2020. Ioneer signed separate offtake agreements with Ford Motor Company and Prime Planet & Energy Solutions (joint venture between Toyota and Panasonic) in 2022 and Korea’s EcoPro Innovation in 2021.

To learn more about Ioneer, visit www.Ioneer.com/investors or join our online communities on X, Facebook, LinkedIn, Instagram and YouTube
 
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