From time to time, the Group may be subject to various claims, title matters and legal proceedings arising in the ordinary course of business, including environmental contamination claims, personal injury and property damage claims, claims related to joint interest billings and other matters under natural gas operating agreements and other contractual disputes. The Group maintains general liability and other insurance to cover some of these potential liabilities. All known liabilities are fully accrued based on the Group’s best estimate of the potential settlement amount. While the outcome and impact on the Group cannot be predicted with certainty, the Group believes that its ultimate liability with respect to any such matters will not have a significant impact or material adverse effect on its financial positions, results of operations or cash flows. Results of operations and cash flows, however, could be significantly impacted in the reporting periods in which such matters are resolved.


	June 30,
	2026		2025
Committed at the reporting date but not recognized as liabilities, payable:
Sweetpea Petroleum Pty Ltd	$	24,028	$	23,115
EP 161	6,024		2,302
Beetaloo Joint Venture	73,322		75,630
Midstream	22,957		9,056

A renewal application for EP 136 was submitted to the Department of Mining and Energy (“DME”) in November 2025, requesting an extension of the permit for a period of 18 months to January 2031. The request for this extension was not granted but the DME did grant changes to the program which varied the work program conditions for years 2 through

5, suspended the work program conditions of year 2 for a period of twelve (12) months from July 23, 2026 to July 23, 2027 and extended the term of the EP for a period of twelve (12) months from July 23, 2029 to July 23, 2030. These changes were effective as of July 23, 2026. Refer to Note 17 for further details. The Group maintains a minimum work program commitment of $14.5 million.

An application for EP 143 was submitted and approved by the DME in June 2026 requesting a variation of the minimum work program for years 2 and 3. The total minimum work program commitments remained the same at $9.6 million.

For the EP 161 working interest, we are obligated to contribute our share of expenses to uphold our stake in this permit, for which Santos Limited is the operator. An application was approved in December 2025 to extend the term of the exploration permit and the required work program which includes the drilling and stimulation of two horizontal wells, along with related geological and geophysical studies to March 2027. Our commitment through March 2027 is expected to be $6.0 million based on approved minimum work requirements. There are no commitment requirements after March 2027.

A variation application was submitted to DME in September 2025 to vary the minimum work program for years 3, 4 and 5. Refer to Note 17 for further details. These commitments include an expected spend of $73.3 million related to drilling and multi-stage hydraulic fracturing of four wells, 3D seismic survey, and subsurface studies, with expenditure across EP 76 of $14.1 million, EP 98 of $43.7 million and EP 117 of $15.5 million.

As of June 30, 2026, the Group had contractual commitments of approximately $23.0 million relating to the remaining construction and commissioning of the SPCF project. As indicated in Note 5 above, as of June 30, 2026, construction of the facility was approximately 90% complete and overall project completion was approximately 93%. Given the advanced stage of the project, substantially all of the remaining forecast expenditure required to complete the facility has been contracted and is reflected in the contractual commitment above. All of the committed amount is expected to be settled within six months of the balance sheet date.

The Group’s operations are subject to risks normally associated with the drilling, completion and production of oil and gas, including blowouts, fires, and environmental risks such as oil spills or gas leaks that could expose the Group to liabilities associated with these risks.

In the Group’s acquisition of existing or previously drilled well bores, the Group may not be aware of prior environmental safeguards, if any, that were taken at the time such wells were drilled or during such time the wells were operated. The Group maintains comprehensive insurance coverage that it believes is adequate to mitigate the risk of any adverse financial effects associated with these risks.

However, should it be determined that a liability exists with respect to any environmental cleanup or restoration, the liability to cure such a violation could still fall upon the Group. No claim has been made, nor is the Group aware of any liability which the Group may have, as it relates to any environmental cleanup, restoration, or the violation of any rules or regulations relating thereto except for the matter discussed above.

The Group is a party to legal proceedings encountered in the ordinary course of its business. While the ultimate outcome and impact to the Group cannot be predicted with certainty, in the opinion of management, it is remote that these legal proceedings will have a material adverse impact on the Group’s financial condition, results of operations or cash flows.

As part of its ongoing business and operations, the Group is required to provide bank letters of credit and bank guarantees for various purposes, including environmental remediation, reclamation, construction costs and other general corporate purposes.

On December 19, 2024, TR Ltd., as guarantor, entered into the Facility Agreement with TR West, as borrower, each a wholly-owned subsidiary of the Company, as obligors, and Macquarie Bank Limited (“Macquarie”), as lender. The Facility Agreement provides TR West with A$25.0 million in availability (“Facility A”) for letters of credit and bank guarantees (“performance bonds”), and includes two additional performance bond facilities, each in the amount of A$5.0 million (“Facility B” and “Facility C,” respectively, and collectively, the “Facilities”). Availability under the Facility B and Facility C is subject, among other conditions, to the Company raising additional capital in the amounts of at least A$62.5 million and A$75.0 million, respectively, which occurred in July 2025. Accordingly, the full A$35.0 million is currently available. All Facilities terminate on December 19, 2027. The obligations under the Facility Agreement are unconditionally guaranteed on a senior secured basis by TR Ltd.

The Facilities are subject to customary representations, warranties and ongoing affirmative and negative covenants and agreements. The Group is required to maintain Minimum Liquidity of A$20.0 million and have a current ratio of at least 1:1. The Facility Agreement provides for events of default that include, among others, nonpayment of any amount due under the Facility Agreement, breach of covenants and certain events of bankruptcy or insolvency. If an event of default occurs, Macquarie will be able to, among other things, terminate the commitments immediately, declare any amounts outstanding to be due and payable in whole or in part, and exercise other rights and remedies. The Group was in compliance with all terms of the Facility Agreement as of June 30, 2026.

In relation to Facility A, the Group incurred an establishment fee of A$0.5 million. The outstanding letters of credit and bank guarantees under the Facilities are subject to a drawdown fee of 10% per annum, payable quarterly in arrears. The Group is also required to pay a commitment fee of 4% per annum, payable quarterly in arrears, on the average monthly unused amount of the Facilities. If the borrower fails to pay any amount payable under the Facility Agreement by the due date, interest accrues on the overdue amount at a rate of 12% per annum, payable quarterly in arrears.

On May 13, 2026, the Board approved an increase in the total facility limit with Macquarie from A$35.0 million to A$40.0 million by way of new Facility D for A$5.0 million. In addition to the increase in the total facility limit, several other amendments have been made to the terms of the Facility Agreement including a reduction in the Minimum Liquidity threshold from A$20.0 million to A$10.0 million and a reduction in the compliance reporting obligations.

As of June 30, 2026, there was A$34.3 million of letters of credit issued under the Facility Agreement. As of June 30, 2026, there was A$1.4 million of unused credit under Facility A, less than A$0.1 million of unused credit under Facility B and Facility C, and A$4.3 million of unused credit under Facility D.

Costs incurred in connection with securing the Facility Agreement, including fees paid to legal advisors and third parties, are deferred and amortized to interest expense over the term of the Facility Agreement. As of June 30, 2026, total unamortized debt issuance costs were A$0.5 million. During the year ended June 30, 2026 and 2025, the Group recorded A$0.3 million and A$0.2 million, respectively, as amortization of deferred debt issuance costs as a part of interest expense.

In December 2024, Tamboran B1 Operator signed a Development Agreement (“DA”) with APA Group (“APA”) that defines the conditions under which APA will design and construct the SPP. Under the DA, Tamboran B1 Operator is required to put in place bank guarantees that cover approximately two-thirds of APA’s projected construction cost. As of June 30, 2026, Tamboran had drawn down A$27.4 million in bank guarantees related to the SPP. Pursuant to the Gas Transportation Agreement (“GTA”) signed with APA, the bank guarantees will be released by APA once certain performance conditions are met and first gas has been delivered to the NT Government under the Gas Sales Agreement (“GSA”). APA may call on the bank guarantees if certain defaults under the DA or GTA remain unremedied, which in turn triggers a requirement by Tamboran B1 Operator to deposit cash amounts sufficient to cover the bank guarantees under the Facility Agreement with Macquarie.