Highfield Resources Ltd (ASX:HFR) achieved an important legal milestone for its flagship Muga Potash Project during the June 2026 quarter, with Spain’s Supreme Court formally admitting appeals relating to the Goyo mining concession and opening the way for a full judicial review.
The decision represents a significant step toward resolving the administrative uncertainty surrounding one of the concessions that forms part of Muga, a proposed potash mine in northern Spain.
Highfield also secured a favourable court outcome for the separate Fronterizo mining concession, continued preparing the project for eventual construction and implemented further cost reductions to preserve liquidity while the legal process progresses.
The company finished the quarter with A$1.46 million in cash and received another A$700,000 under its existing convertible note facility after the end of the reporting period.
Average monthly payroll was reduced by 24% compared with the previous quarter, reflecting Highfield’s ongoing effort to minimise cash burn and maintain sufficient financial flexibility while progressing Muga.
Supreme Court admits Goyo appeal
The main development during the quarter was the Spanish Supreme Court’s decision to admit appeals concerning the procedural ruling affecting the Goyo mining concession.
The matter relates to an earlier decision by the Superior Court of Justice of Navarra, which identified a procedural flaw in the internal administrative coordination process used when the concession was granted.
Highfield’s Spanish subsidiary, Geoalcali SLU, had received government advice in 2014 to apply for three separate mining concessions covering Goyo, Muga and Fronterizo.
However, the Navarra court subsequently determined that a single unified concession should have been issued instead of the three individual concessions.
Highfield has consistently stressed that the ruling concerns administrative procedure rather than the merits of the project itself.
The decision did not challenge the technical viability of Muga, the environmental studies supporting the development or Highfield’s underlying mineral rights.
The appeals were filed by the governments of Navarra, Aragón and Spain, as well as by Geoalcali, demonstrating broad institutional involvement in seeking clarity on the correct permitting process for mining projects that extend across regional boundaries.
Admission of the matter by the Supreme Court means the procedural issues can now be examined through a full judicial review.
Highfield said the development was an important step toward establishing legal certainty over the permitting framework applicable to cross-regional mining developments in Spain.
During the June quarter, the company prepared and filed its appeal brief in accordance with the timetable established by the Supreme Court.
The timing of the court’s final determination remains outside Highfield’s control, but resolving the matter is a central priority because of its importance to the broader Muga development pathway.
Fronterizo legal challenge dismissed
Highfield also reported a positive outcome in a separate proceeding concerning the Fronterizo mining concession.
The Superior Court of Justice of Madrid dismissed in full a legal challenge brought by environmental organisation Ecologistas en Acción.
The claimant had raised both procedural and environmental arguments against the granting of the Fronterizo concession.
However, the court rejected those arguments and confirmed that the administrative process followed in granting the concession complied with Spanish law.
Costs were also awarded against the claimant.
The Fronterizo proceeding is separate from the litigation surrounding Goyo and does not form part of the appeals currently before the Supreme Court.
Nevertheless, the ruling provides an additional measure of support for the regulatory and environmental work underpinning the wider Muga project area.
It also means the Fronterizo concession remains intact while Highfield works through the separate administrative matter involving Goyo.
Muga remains the company’s central development priority
Highfield’s focus remains firmly on advancing the Muga Potash Project toward construction.
Located within the Ebro potash-producing basin in northern Spain, Muga has been designed as a relatively shallow underground operation.
The mineralisation is positioned without aquifers above it, meaning the mine would not require the construction of a conventional vertical shaft.
Instead, the development is planned around decline access, which is expected to contribute to Muga’s comparatively low capital intensity.
The project also benefits from established infrastructure in the surrounding region, including access to transport networks and proximity to European agricultural markets.
Its location is strategically important because Europe has a clear deficit in domestic potash supply and relies heavily on imports to meet fertiliser demand.
Potash is a key source of potassium used to improve crop quality, plant resilience and agricultural yields.
Highfield believes Muga’s proximity to end users could provide logistical and supply-chain advantages compared with potash imported into Europe from more distant producing regions.
The company has already completed initial site preparatory work and secured a number of important permits and licences.
Muga’s mining concession was granted in 2021, followed by the ramp construction licence in Aragón in 2022 and the process plant construction licence in Navarra in 2023.
Highfield continues to advance the remaining administrative processes required before full project development can proceed.
LOCATION OF MUGA-VIPASCA AND PINTANOS TENEMENT AREAS IN NORTHERN SPAIN.
Sierra del Perdón work discontinued
During the quarter, Highfield decided not to pursue further development of the Sierra del Perdón tenement following the expiry of the associated exploration permits.
The company said the decision reflected the limited prospectivity of the tenement and would allow management and financial resources to remain focused on Muga.
Sierra del Perdón was fully impaired in 2020, meaning the decision does not affect Highfield’s current financial position.
No significant exploration work was completed elsewhere during the reporting period because the company’s immediate priority remains the development and construction readiness of Muga.
The rationalisation of non-core activities is consistent with Highfield’s broader strategy of concentrating expenditure on the most advanced and potentially valuable part of its Spanish potash portfolio.
Cost controls reduce payroll and workforce
Highfield continued to implement strict cash-management measures during the June quarter as it sought to maintain operations while awaiting greater legal and funding certainty.
The company’s staff furlough scheme, known as an ERTE in Spain, was introduced in March 2025 and has been extended until the end of 2026 with the support of all staff.
Highfield has also continued to right-size its workforce.
The company had nine employees at the end of the quarter, representing a 30% reduction compared with the previous quarter.
These measures contributed to a 24% reduction in average monthly payroll costs.
Highfield also reduced related expenses, external consulting expenditure and other discretionary costs.
Management expects the savings already implemented, along with further planned reductions, to lower monthly cash outflows during the September quarter.
The cost controls are intended to preserve the company’s ability to continue progressing the Goyo appeal, maintain Muga’s construction readiness and explore value-realisation and funding alternatives.
Cash position and quarterly expenditure
Highfield held A$1.458 million in cash and cash equivalents at June 30, compared with A$2.277 million at the beginning of the quarter.
Net operating cash outflows totalled A$1.738 million.
The largest operating payments included A$775,000 in staff costs and A$1.064 million in administration and corporate expenses.
These outflows were partly offset by A$96,000 in GST and value-added tax refunds and A$4,000 of interest income.
The company also spent A$92,000 on capitalised exploration and evaluation activities.
Financing inflows during the quarter totalled A$700,000 from the issue of convertible debt securities.
The company’s reported cash balance represented an estimated 0.8 quarters of funding based on the expenditure profile recorded during the June quarter.
However, management does not expect net operating cash outflows to continue at that level.
Highfield said the impact of recent headcount reductions, lower consulting expenditure and additional cost controls should reduce the company’s future cash-burn rate.
The company also intends to pursue further cost reductions during the September quarter.
Further A$700,000 received after quarter-end
Highfield received a fourth tranche of A$700,000 under its existing convertible note facility in July, after the reporting period ended.
The funding was provided despite noteholders no longer being required to subscribe for further tranches following the occurrence of an appeal-related event in May 2026.
Although the additional funding strengthens Highfield’s near-term liquidity, it does not create an obligation for the noteholders to provide subsequent tranches.
Highfield secured a broader A$10 million financing package from existing strategic shareholders and investors in the December 2025 quarter.
A total of A$5.86 million had been drawn by the date of the June quarterly report.
The remaining A$4.14 million was subject to lender conditions, including the company’s continued disciplined management of expenditure.
Highfield said it expected the remaining funding to become available for drawdown in September 2026, subject to those conditions being satisfied.
The company is also investigating additional funding and strategic initiatives as part of a broader value-realisation plan.
Convertible note position
Highfield’s financing facilities primarily comprise convertible notes subscribed for by investors including EMR Capital Management Ltd, Tectonic Investment Management and another institutional investor.
At the end of the quarter, the total facility amount stood at A$43.644 million, with A$39.504 million drawn.
Some of the earlier convertible notes accrue interest at 14% per year, payable in kind through capitalisation to the outstanding note balance.
An 18% default interest rate has applied since the termination of Highfield’s senior loan facility in September 2025.
Newer notes issued under the October 2025 financing arrangement bear interest at 18% per year, with an additional 4% default interest while an event of default continues.
The notes are secured over shares and shareholder loans relating to Geoalcali, the Spanish subsidiary that owns and is developing Muga.
Highfield expects to continue balancing its funding requirements against the need to minimise dilution and preserve value for shareholders and noteholders.
Potash market remains constructive
Potash market conditions were broadly stable during the June quarter.
Highfield said the global balance between supply and demand continued to support prevailing price levels, despite the easing of some sanctions affecting Belarus.
The global market remains influenced by geopolitical developments and by the concentration of production among a relatively small number of major suppliers.
Demand for muriate of potash remained resilient, supported by favourable agricultural conditions and consistent fertiliser application across key consuming regions.
In Europe, granular muriate of potash prices remained relatively firm at about €380 per tonne.
Highfield described the medium-term outlook as constructive.
The company expects potash demand to remain supported by population growth, food-security requirements and the need for farmers to improve crop yields.
Supply growth is also expected to remain disciplined, although short-term price movements may continue to respond to geopolitical and broader macroeconomic events.
Next steps
During the September 2026 quarter, Highfield intends to progress value-realisation pathways for shareholders and noteholders.
The company will also continue working toward resolving the Goyo mining concession matter while awaiting the Supreme Court’s determination.
Maintaining Muga’s construction readiness will remain a key operational priority.
Highfield also plans to continue reducing expenditure, manage liquidity carefully and pursue additional funding and strategic alternatives.
The expected availability of the remaining A$4.14 million under the convertible note facility in September could provide further financial support, although access remains subject to lender conditions.