Ioneer holds $54.5M cash as partner talks continue
At September 30, 2026, Ioneer reported US$54.547 million in cash and estimated 12.8 quarters of funding available.
Sentiment and the balance of points
Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.
Ioneer Ltd (IONR) reported quarterly activity and progress toward a final investment decision for its 100%-owned Rhyolite Ridge lithium-boron project. Cash and cash equivalents were US$54.547 million at September 30, 2026. Net cash used in operating and investing activities was US$1.579 million and US$2.673 million, respectively; the cash-flow schedule estimates 12.8 quarters of funding available.
The MOUs are non-binding: KIND is considering a project equity investment, while Hyundai Engineering is considering procurement-related activities. The strategic-partner process is expected to conclude in Q4 2026 following counterparty approval timelines. Ioneer advanced discussions with the U.S. Army to lease approximately 50 acres at Tooele; Fluor Corporation’s September 2026 pre-feasibility study evaluated a facility that would produce 10,000 tonnes per annum of 99.9% defence-grade boron carbide. The Rhyolite Ridge appeal remains before the Ninth Circuit; Ioneer filed its response brief on September 25, 2026, and a decision is anticipated in mid-2027. Ioneer says the appeal is not expected to delay commencement of construction. The targeted final investment decision is TBA, dependent on partner-process outcomes and a refresh of project economics.
Filing Explained
This Form 6-K incorporates its quarterly report into Ioneer’s Form F-3 and Form S-8 registration statements, making the report part of those filings from October 27, 2026, unless later superseded.
Key Figures
Key Terms
final investment decision (FID) financial
Memorandums of Understanding regulatory
Record of Decision (ROD) regulatory
National Environmental Policy Act (NEPA) regulatory
pre-feasibility study technical
LCE technical
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
How much cash did IONR report at September 30, 2026?
Are IONR’s MOUs with KIND and Hyundai Engineering binding?
How much boron carbide could the proposed IONR facility produce?
What is the status of IONR’s Rhyolite Ridge permitting appeal?
AI-generated analysis. How Rhea-AI works. Not financial advice.
UNITED STATES
|
Exhibit
|
Description
|
|
|
99.1
|
Quarterly Report for the Three Months ended September 30, 2026
|
|
|
ioneer Ltd
|
|||
|
(registrant)
|
|||
|
Date: October 27, 2026
|
By:
|
/s/ April Hashimoto | |
|
Name: April Hashimoto
|
|||
|
Title: Chief Financial Officer
|
|||
![]() |
![]() |
|
QUARTERLY ACTIVITIES REPORT
For the period ending 30 September 2026
Highlights
• Strategic partnering process on track for year-end completion in line with
counterparty approval timelines
• Began engineering on the Rhyolite Ridge access road
• Commenced a drill program to further
delineate the Rhyolite Ridge resource and provide geotechnical information for engineering
• Completed pre-feasibility study for a boron carbide plant at the Tooele
Army Depot
• Company had US$54.55 million in cash at 30
September 2026 and is in a strong financial position through completion of the Strategic Partnering Process, a Final Investment Decision and Early Construction Works
|

| 2 | ![]() |

| 3 | ![]() |

| 4 | ![]() |

|
Milestone
|
Targeted timing*
|
Note
|
|||
|
Targeted completion of
Strategic Partner process
|
Q4 2026
|
The strategic partnering process is ongoing.
|
|||
|
Targeted Final Investment
Decision
|
TBA
|
Dependent on outcomes of Strategic Partnering Process and requirement to refresh Project economics.
|
|||
|
Construction
|
Circa 36 months
|
Includes supply of long-lead items and construction. Subject to lead times and when orders are placed.
|
| • |
Complete the strategic partnering process for the Rhyolite Ridge Project
|
| • |
Make a Final Investment Decision (FID)
|
| • |
Prepare for commencement of construction
|
| • |
Finalise agreement with Hyundai Engineering to provide procurement services
|
| • |
Continue work with Hyundai Engineering to review potential Korean suppliers for the Project
|
| • |
Advance permitting for a boron carbide plant at the Tooele Army depot
|
| • |
Complete test work confirming economic assessment of selected stratigraphic units currently classified as overburden waste in the mine plan potentially moving
into the resource followed by a potential resource update
|
| 5 | ![]() |

| 1. |
ASX LR 5.3.1: Exploration and Evaluation Expenditure during the quarter was US$2.67 million. Details of the
exploration activity are set out in this report. A breakdown of the expenditure is below:
|
|
Expenditure
|
US$’000
|
||
|
Exploration
|
49
|
||
|
Engineering
|
665
|
||
|
Environmental
|
635
|
||
|
Sales & Marketing
|
198
|
||
|
Other
|
1,126
|
||
|
Total
|
2,673
|
| 2. |
ASX LR 5.3.2: The Company confirms there were no production or development activities during the quarter.
|
| 3. |
ASX LR 5.3.5: Related party payments for the quarter totalled US$354,899 comprising salaries, fees and payout of
annual leave for the Company’s executive and non-executive directors. No other payments were made to any related parties of the entity or their associates.
|
| 4. |
ASX LR 5.3.3: INR confirms that there were 13 tenements at the Project that were not re-newed during the quarter.
(see Appendix 1).
|
| • |
3.09 billion ordinary shares, and
|
| • |
74.94 million performance rights.
|
|
Chad Yeftich
|
| Ioneer USA Corporation |
|
Investor Relations (USA)
|
| T: +1 775 993 8563 |
| E: ir@ioneer.com |
| 6 | ![]() |

| 7 | ![]() |

|
Date Released
|
Title
|
|
|
13/08/2026
|
Half Yearly Report and Accounts
|
|
|
30/07/2026
|
June 2026 - Quarterly Cash Flow Report
|
|
|
30/07/2026
|
June 2026 - Quarterly Activities Report
|
|
|
08/07/2026
|
Ioneer Signs MOUs with KIND and Hyundai Engineering
|
|
|
06/07/2026
|
Change of Director’s Interest Notice – Bernard Rowe
|
|
|
06/07/2026
|
Change of Director’s Interest Notice – James Calaway
|
|
|
03/07/2026
|
Notification of Cessation of Securities – INR
|
|
|
03/07/2026
|
Application for Quotation of Securities – INR
|
|
| 8 | ![]() |

|
Country
|
Project
|
Tenement ID
|
Tenement Name
|
Area
(km2)
|
Interest at beginning
of quarter
|
Interest at end of
quarter
|
Note
|
||||||||
|
USA
|
Rhyolite Ridge
|
NMC1117360
|
SLB claims (199)
|
15.9
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Rhyolite Ridge
|
NV105809159
|
SLB claims (18)
|
1.4
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Rhyolite Ridge
|
NMC1171536
|
SLM claims (122)
|
9.6
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Rhyolite Ridge
|
NMC 1179516
|
RR claims (65)
|
4.8
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Rhyolite Ridge
|
NV105810398
|
RR claims (14)
|
1.1
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Rhyolite Ridge
|
NV105272779
|
RMS mill sites (23)
|
0.5
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Rhyolite Ridge
|
NV106354216
|
RMS mill sites (313)
|
6.2
|
100%
|
100%
|
13 tenements not
re-newed
|
||||||||
|
USA
|
Rhyolite Ridge
|
NMC1147932
|
SLP claims (120)
|
9.6
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Rhyolite Ridge
|
NV105272053
|
PR claims (11)
|
0.9
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Beacon Hill
|
NMC1118666
|
NLB claims (160)
|
12.8
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Beacon Hill
|
NV106310781
|
NLB claims (41)
|
3.3
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Beacon Hill
|
NMC 1129523
|
BH claims (81)
|
6
|
100%
|
100%
|
No change
|
||||||||
|
USA
|
Radiator Springs
|
NV106735396
|
COB claims (231)
|
18.5
|
100%
|
100%
|
No change
|
| 9 | ![]() |
|
Name of entity
|
|
|
ioneer Ltd
|
|
|
ABN
|
Quarter ended (“current quarter”)
|
|
76 098 564 606
|
September 2026
|
|
Consolidated statement of cash flows
|
Current quarter
$US’000
|
Year to date
(9 months)
$US’000
|
|
|
1.
|
Cash flows from operating activities
|
-
|
-
|
|
1.1
|
Receipts from customers
|
||
|
1.2
|
Payments for
|
-
|
-
|
|
(a) exploration & evaluation (if expensed)
|
|||
|
(b) development
|
-
|
-
|
|
|
(c) production
|
-
|
-
|
|
|
(d) staff costs
|
(865)
|
(2,217)
|
|
|
(e) administration and corporate costs
|
(1,290)
|
(3,919)
|
|
|
1.3
|
Dividends received (see note 3)
|
-
|
-
|
|
1.4
|
Interest received
|
576
|
1,073
|
|
1.5
|
Interest and other costs of finance paid
|
-
|
-
|
|
1.6
|
Income taxes paid
|
||
|
1.7
|
Government grants and tax incentives
|
-
|
-
|
|
1.8
|
Other (provide details if material)
|
-
|
-
|
|
1.9
|
Net cash from / (used in) operating activities
|
(1,579)
|
(5,063)
|
|
2.
|
Cash flows from investing activities
|
-
|
-
|
|
2.1
|
Payments to acquire:
|
||
|
(a) entities
|
|||
|
(b) tenements
|
-
|
-
|
|
|
(c) property, plant and equipment
|
-
|
-
|
|
|
(d) exploration & evaluation (if capitalised)
|
(2,673)
|
(6,951)
|
|
|
(e) investments
|
-
|
-
|
|
|
(f) other non-current assets
|
-
|
-
|
|
|
ASX Listing Rules Appendix 5B (01/12/19)
+ See chapter 19 of the ASX Listing Rules for defined terms.
|
Page 1
|
|
Appendix 5B
|
|
Mining exploration entity or oil and gas exploration entity quarterly cash flow report
|
|
Consolidated statement of cash flows
|
Current quarter
$US’000
|
Year to date
(9 months)
$US’000
|
|
|
2.2
|
Proceeds from the disposal of:
|
-
|
-
|
|
(a) entities
|
|||
|
(b) tenements
|
-
|
-
|
|
|
(c) property, plant and equipment
|
-
|
-
|
|
|
(d) investments
|
-
|
-
|
|
|
(e) other non-current assets
|
-
|
-
|
|
|
2.3
|
Cash flows from loans to other entities
|
-
|
-
|
|
2.4
|
Dividends received (see note 3)
|
-
|
-
|
|
2.5
|
Other (provide details if material)
|
-
|
-
|
|
2.6
|
Net cash from / (used in) investing activities
|
(2,673)
|
(6,951)
|
|
3.
|
Cash flows from financing activities
|
-
|
50,400
|
|
3.1
|
Proceeds from issues of equity securities (excluding convertible debt securities)
|
||
|
3.2
|
Proceeds from issue of convertible debt securities
|
-
|
-
|
|
3.3
|
Proceeds from exercise of options
|
-
|
-
|
|
3.4
|
Transaction costs related to issues of equity securities or convertible debt securities
|
-
|
(2,290)
|
|
3.5
|
Proceeds from borrowings
|
-
|
-
|
|
3.6
|
Repayment of borrowings
|
-
|
-
|
|
3.7
|
Transaction costs related to loans and borrowings
|
-
|
-
|
|
3.8
|
Dividends paid
|
-
|
-
|
|
3.9
|
Other (provide details if material)
|
(76)
|
(221)
|
|
3.10
|
Net cash from / (used in) financing activities
|
(76)
|
47,889
|
|
4.
|
Net increase / (decrease) in cash and cash equivalents for the period
|
||
|
4.1
|
Cash and cash equivalents at beginning of period
|
58,840
|
17,863
|
|
4.2
|
Net cash from / (used in) operating activities (item 1.9 above)
|
(1,579)
|
(5,063)
|
|
4.3
|
Net cash from / (used in) investing activities (item 2.6 above)
|
(2,673)
|
(6,951)
|
|
4.4
|
Net cash from / (used in) financing activities (item 3.10 above)
|
(76)
|
47,889
|
|
ASX Listing Rules Appendix 5B (01/12/19)
+ See chapter 19 of the ASX Listing Rules for defined terms.
|
Page 2
|
|
Appendix 5B
|
|
Mining exploration entity or oil and gas exploration entity quarterly cash flow report
|
|
Consolidated statement of cash flows
|
Current quarter
$US’000
|
Year to date
(9 months)
$US’000
|
|
|
4.5
|
Effect of movement in exchange rates on cash held
|
35
|
809
|
|
4.6
|
Cash and cash equivalents at end of period
|
54,547
|
54,547
|
|
5.
|
Reconciliation of cash and cash equivalents
at the end of the quarter (as shown in the consolidated statement of cash flows) to the related items in the accounts
|
Current quarter
$US’000
|
Previous quarter
$US’000
|
|
5.1
|
Bank balances
|
10,025
|
11,074
|
|
5.2
|
Call deposits
|
44,522
|
47,766
|
|
5.3
|
Bank overdrafts
|
-
|
-
|
|
5.4
|
Other (provide details)
|
||
|
5.5
|
Cash and cash equivalents at end of quarter (should equal item 4.6 above)
|
54,547
|
58,840
|
|
6.
|
Payments to related parties of the entity and their associates
|
Current quarter
$US’000
|
|
6.1
|
Aggregate amount of payments to related parties and their associates included in item 1
|
355
|
|
6.2
|
Aggregate amount of payments to related parties and their associates included in item 2
|
|
|
Note: if any amounts are shown in items 6.1 or 6.2, your quarterly activity report must include a description of, and an explanation for, such payments
|
||
|
Directors’ fees – 97.5
Executive salary component of chairman’s fee – 62.5
Wages – 125.5
Annual leave payout – 69.4
|
|
ASX Listing Rules Appendix 5B (01/12/19)
+ See chapter 19 of the ASX Listing Rules for defined terms.
|
Page 3
|
|
Appendix 5B
|
|
Mining exploration entity or oil and gas exploration entity quarterly cash flow report
|
|
7.
|
Financing facilities
Note: the term “facility’ includes all forms of financing arrangements available to the entity.
Add notes as necessary for an understanding of the sources of finance available to the entity.
|
Total facility
amount at quarter
end
$US’000
|
Amount drawn at
quarter end
$US’000
|
|
7.1
|
Loan facilities
|
-
|
-
|
|
7.2
|
Credit standby arrangements
|
-
|
-
|
|
7.3
|
Other (please specify)
|
-
|
-
|
|
7.4
|
Total financing facilities
|
-
|
-
|
|
7.5
|
Unused financing facilities available at quarter end
|
-
|
|
|
7.6
|
Include in the box below a description of each facility above, including the lender, interest rate, maturity date and whether it is secured or unsecured. If any additional
financing facilities have been entered into or are proposed to be entered into after quarter end, include a note providing details of those facilities as well.
|
||
|
8.
|
Estimated cash available for future operating activities
|
$US’000
|
|
8.1
|
Net cash from / (used in) operating activities (Item 1.9)
|
(1,579)
|
|
8.2
|
Capitalised exploration & evaluation (Item 2.1(d))
|
(2,673)
|
|
8.3
|
Total relevant outgoings (Item 8.1 + Item 8.2)
|
(4,252)
|
|
8.4
|
Cash and cash equivalents at quarter end (Item 4.6)
|
54,547
|
|
8.5
|
Unused finance facilities available at quarter end (Item 7.5)
|
-
|
|
8.6
|
Total available funding (Item 8.4 + Item 8.5)
|
54,547
|
|
8.7
|
Estimated quarters of funding available (Item 8.6 divided by Item 8.3)
|
12.8
|
|
8.8
|
If Item 8.7 is less than 2 quarters, please provide answers to the following questions:
|
|
|
1. Does the entity expect that it will continue to have the current level of net operating cash flows for the time being and, if not, why not?
|
||
|
Answer: N/A
|
||
|
2. Has the entity taken any steps, or does it propose to take any steps, to raise further cash to fund its operations and, if so, what are those steps and how likely does it believe
that they will be successful?
|
||
|
Answer: N/A
|
||
|
3. Does the entity expect to be able to continue its operations and to meet its business objectives and, if so, on what basis?
|
||
|
Answer: N/A
|
||
|
ASX Listing Rules Appendix 5B (01/12/19)
+ See chapter 19 of the ASX Listing Rules for defined terms.
|
Page 4
|
|
Appendix 5B
|
|
Mining exploration entity or oil and gas exploration entity quarterly cash flow report
|
| 1 |
This statement has been prepared in accordance with accounting standards and policies which comply with Listing Rule 19.11A.
|
| 2 |
This statement gives a true and fair view of the matters disclosed.
|
|
Date:
|
27 October 2026
|
|
...................................................................................
|
|
| Bernard Rowe – Managing Director | |
|
Authorised by:
|
....................................................................................
|
|
(Name of body or officer authorising release – see note 4)
|
| 1. |
This quarterly cash flow report and the accompanying activity report provide a basis for informing the market about the entity’s activities for the past quarter, how they have been
financed and the effect this has had on its cash position. An entity that wishes to disclose additional information over and above the minimum required under the Listing Rules is encouraged to do so.
|
| 2. |
If this quarterly cash flow report has been prepared in accordance with Australian Accounting Standards, the definitions in, and provisions of, AASB
6: Exploration for and Evaluation of Mineral Resources and AASB 107: Statement of Cash Flows apply to this report. If this quarterly cash flow report has been prepared in accordance with
other accounting standards agreed by ASX pursuant to Listing Rule 19.11A, the corresponding equivalent standards apply to this report.
|
| 3. |
Dividends received may be classified either as cash flows from operating activities or cash flows from investing activities, depending on the accounting policy of the entity.
|
| 4. |
If this report has been authorised for release to the market by your board of directors, you can insert here: “By the board”. If it has been authorised for release to the market by
a committee of your board of directors, you can insert here: “By the [name of board committee – e.g. Audit and Risk Committee]”. If it has been authorised
for release to the market by a disclosure committee, you can insert here: “By the Disclosure Committee”.
|
| 5. |
If this report has been authorised for release to the market by your board of directors and you wish to hold yourself out as complying with recommendation 4.2 of the ASX Corporate
Governance Council’s Corporate Governance Principles and Recommendations, the board should have received a declaration from its CEO and CFO that, in their opinion, the financial records of the
entity have been properly maintained, that this report complies with the appropriate accounting standards and gives a true and fair view of the cash flows of the entity, and that their opinion has been formed on the basis of a sound system
of risk management and internal control which is operating effectively.
|
|
ASX Listing Rules Appendix 5B (01/12/19)
+ See chapter 19 of the ASX Listing Rules for defined terms.
|
Page 5
|

