September 2025 Quarterly Activities Report

October 31, 2025

QUEBEC CITY, Oct. 31, 2025 (GLOBE NEWSWIRE) -- West African gold producer and developer Robex Resources Inc. (“Robex” or the “Company”) (TSX-V: RBX | ASX: RXR | OTC: RSRBF | Börse Frankfurt: RB4) is pleased to report on its activities for the September 2025 Quarter. Robex owns the Nampala Gold Mine in Mali and continues to make strong progress on the construction of the Kiniero Gold Project in Guinea, which remains on schedule for first gold pour in Q4 CY25.

Highlights:

Robex and Predictive Discovery (ASX: PDI) announced a merger of equals, aiming to create a strengthened mid-tier West African gold producer. The merger, announced on 6 October 2025, is expected to close by early 2026, subject to satisfaction of closing conditions and shareholder approval.
Robex accelerated the expiry of its 2024 warrants from 27 June 2026 to 18 October 2025 after the share price exceeded C$3.50 for 10 consecutive trading days. The Company raised C$148.2M, strengthening its balance sheet and highlighting strong investor confidence.
Robex amended its US$130 million senior facility with Sprott, unlocking up to US$90 million to support Kiniero Gold Project development.
Mining commenced on day and night shift at Kiniero, with delivery of ore to the run-of-mine (ROM) pad.
Kiniero construction remains on schedule and on budget for first gold pour in Q4 2025. Mining is underway and more than 4.8 million LTI-free hours have been recorded. Major milestones have been achieved including near-complete mills, 45% electrical progress at the power station, 76% completion of the TSF, and full delivery of structural and electrical materials.
Initiated 20,000m RC drilling at Sabali South (Kiniero) to expand resources, with diamond drilling planned at SGA and NEGD, while near-mine exploration continued at Nampala to extend mine life.
Strategic planning advanced 2026 exploration programs, budgeting and target generation across Guinea and Mali.
Nampala operation remains Lost Time Injury (LTI) free, with more than 2.04 million hours worked. Kiniéro project has recorded 4.86 million LTI-free hours.
Nampala produced 9,774 ounces and sold 9,529 ounces of gold during the September 2025 quarter.
Year-to-date gold production from Nampala totalled 34,401oz at an All-in Sustaining (AISC) of C$2,555/oz.

Robex’s Managing Director and CEO Matt Wilcox commented:

“We advanced the Kiniero Gold Project strongly throughout the September quarter, with mining now underway and delivery of ore to the ROM pad, with drilling and blasting to commence shortly. Construction is progressing across all major areas, with no lost-time injuries reported during the quarter.

“Key milestones included major progress on the process plant, completion of critical concrete works, advancement of CIL tank installation, and continued work on the SAG mill and tailings storage facility. Site infrastructure, including power generation and fuel facilities, also progressed in line with schedule.

We remain committed to delivering Kiniero safely, efficiently, and responsibly, while maintaining strong engagement with host communities and stakeholders. Meanwhile, operations at the Nampala Gold Mine in Mali continued to perform despite challenging operating conditions.”

Kiniéro Gold Project, Guinea

Construction Overview

The Kiniero Project remains on track for first gold pour in Q4 2025, with construction and mine development advancing in line with schedule milestones.

Mining

Mining operations commenced during the quarter on both day and night shifts, with 82,590 tonnes of material mined, including 20,625 tonnes of ore and 10,000 tonnes of ore rehandled from historical stockpile to the main ROM pad.
Initial mining activities have commenced with free-digging operations, and the first production blast being completed mid-October.
Mining & ROM Pad management contracts services, Grade control contract services, Drill & Blast contract services and secondary haulage contract services all executed, and contractors have mobilised to site.

Figure 1: Aerial view of the Kiniéro site showing construction progress and ore stockpile on the ROM Pad

Process Plant and Infrastructure

Concrete work for the process plant and power station completed during the quarter, marking a major construction milestone.
All platework, structural steel, piping, and electrical materials delivered to site.
Structural, Mechanical & Piping (SMP) works are advancing, with structural steel erected or preassembled.
SAG mill assembly is complete, with the mill floating on its bearing and the right gear installed; alignment and drivetrain installation are scheduled for early Q4 2025.
Ball mill assembly is nearing completion, with ring gear installation to follow.
Primary crushing and reclaim areas are well advanced, with steelwork and platework installation currently underway.
Leaching circuit construction is ahead of schedule, with all intertank screens and agitators near complete on train A.
Steelwork for the elution, gold room and reagent areas is progressing strongly.

The onsite pipe fabrication workshop is fully operational, supporting accelerated progress in piping installation.

Power Generation and Electrical Works

The power station construction remains on schedule, with low voltage motor control centres (MCCs) delivered and installed.
Four engines (4MW) delivered to site, with based frame preparation underway and installation expected in October.
Electrical work is advancing, with nearly 30,000m of cabling installed and the power station 45% electrically complete.
Engine haul building structural steel completed, with cladding and ancillary works progressing.
Fuel storage facility tankage erection progressed according to plan during the quarter.

Tailing Storage Facility (TSF)

Construction of tailings storage facilities (TSF) is progressing on schedule.
The eastern embankment is progressing strongly, with +500,000m³ of fill placed.
Lining crew remobilized during last September, installing 78,650m² of HDPE Liner.
Earthworks for the tailing pipeline containment channel and process water pond completed and prepared for lining.

Other Infrastructure

Overland HDPE piping, including the tailings and freshwater pipelines, advanced well with over 15km welded by quarter-end.
Field-erected tankage reached 99% complete, with painting outstanding.
Concrete contracting works completed, with contractor demobilization commencing in early October.
ROM Haul roads and site access roads progressed, maintaining efficient material movement to the processing area.

Construction Next Steps – Q4 2025

In the quarter ahead, Robex expects to:

Continue with SMP works for the process plant and power station.
Complete mill installation.
Continue with electrical and instrumentation installation in a staged approach to allow energization of switch rooms for commissioning in November.
Complete the installation of four engines and commence commissioning and run on diesel by mid-November.
Continue with tailings storage facility earthworks and lining.
Complete mobilisation of operations, operation readiness and commissioning teams. Complete recruitment of operators and commence training programs.
Continue with mining development works and ramp up mining with more ore delivered to the ROM pad.
Continue grade control drilling at Sabali pit.

Community Relations
During the quarter, Robex’s Kiniero project maintained strong engagement with host communities through the delivery of key social and community initiatives under the Company’s Corporate Social Responsibility (CSR) program:

Construction of four community centres in Ballan, Fara-Ballan, Mansounia, and Kiniero Centre were completed during the September quarter, with work having commenced in prior periods. Upgrades to the Ballan Primary School, including new facilities, were also finalised during the quarter.
Improved local healthcare services through ambulance repairs at the Kiniero Health centre, donation of anti-venoms and installation of solar-powered equipment for vaccine storage.
Supported education and community development, including the distribution of school kits to first-year students in nearby villages, and financial assistance for local cultural, religious, and sporting events.
Maintained regular community engagement, with ongoing consultations held across projected-affected areas.

Environmental and Safety Performance
At the in-development Kiniéro Project, Robex maintained strong environmental and health & safety practices during the quarter, reinforcing its commitment to responsible mining and early-stage community engagement. This proactive approach included:

Safety performance remained strong, with no lost time injuries (LTIs) recorded during the quarter.
A new on-site ambulance was delivered, equipped with upgraded medical and emergency equipment to enhance first-response capability.
The medical services contractor (AMS) mobilized in mid-September, including an expatriate emergency doctor and establishment of a dedicated emergency room.
Construction of the new site clinic progressed and is expected to be completed by the end of October.
The tree nursery program continued during the quarter, with extensive seeding underway to support future site rehabilitation and biodiversity enhancement.
Contract for septic waste removal was finalised and waste management activities continued with the company’s waste removal contractor.
Water samples were collected and sent for analysis at Sabali camp treatment plant to ensure continued compliance with environmental and health standards.

Pre-Production Grade Control Completed at Sabali South

Robex has completed its pre-production grade control drilling campaign at Sabali South, ahead of planned mining activities at the deposit in Q4 2025. This follows the completion of the Mansounia grade control drilling program in Q2. The program comprised 2,843 inclined grade control drill holes, totalling 66,105 metres, aimed at refining subsurface grade definition in preparation for the commencement of mining. Grade control drilling results at Sabali south closely tracked the Mineral Reverse model. Results confirm the robustness of the geological model and support short-term mine planning.

September Quarter Progress at Kiniéro Gold Project, Guinea