Highlights

  • Catalyst Metals (ASX: CYL) continued drilling at the Zone 400 deposit within the Old Highway project.
  • Zone 400 currently underpins a four-year mine life at 35,000 ounces per annum.
  • Recent drilling targeted underground resource extensions and mine life growth potential.
  • Drilling at Zone 250 returned intercepts including 6 metres at 4.1g/t gold from 350 metres depth.
  • CYL shares rose 1.19% to AUD5.93 on 15 May 2026.

Catalyst Metals (ASX: CYL) edged higher on 15 May 2026 after providing an update on drilling activities at its Old Highway gold project, where the company continues targeting underground resource growth and potential mine life extensions.

The company’s shares rose 1.19% to AUD5.93 by 4:11pm GMT+10 as investors responded to ongoing drilling progress at the Zone 400 and Zone 250 deposits.

According to Catalyst, recent drilling has primarily focused on the Zone 400 deposit, which forms the basis of the company’s near-term development plans at Old Highway.

Zone 400 currently hosts a 140,000-ounce Reserve and an initial four-year mine life based on annual production of approximately 35,000 ounces per annum.

The company noted the current mine life assumptions are largely based on shallow historical drilling completed by prior owners, increasing investor focus on the potential for deeper resource growth.

Zone 400 drilling targets underground expansion

Catalyst stated its recent drilling campaign has focused on testing depth extensions at Zone 400 with the aim of growing the underground resource inventory and extending future mine life.

The company views Zone 400 as only a small portion of the broader four-kilometre strike length across the Old Highway mineralised system.

Resource growth at depth can play an important role in improving long-term mine planning flexibility and operational Economics for underground gold projects.

Investors often closely monitor drilling campaigns that seek to convert shallow open pit opportunities into larger underground Mining operations with extended production timelines.

The company did not release specific new intercepts from Zone 400 in the update but indicated drilling continues to support its broader resource growth strategy.

Zone 250 drilling delivers encouraging intercepts

Catalyst also confirmed recent drilling had been completed at Zone 250, located approximately one kilometre southwest of Zone 400.

Zone 250 currently contains an indicated Resource of 53,000 ounces grading 1.6g/t gold, although it is not included in the company’s current development plans.

The company highlighted recent drilling intersections including 6 metres grading 4.1g/t gold from 350 metres depth.

According to Catalyst, the result provides indications that mineralisation at Zone 250 may extend at depth.

Exploration investors often focus on deeper high-grade intercepts because they can support future underground mining scenarios or additional resource expansion opportunities beyond initial mine plans.

Old Highway positioned near existing infrastructure

The Old Highway project is located approximately 40 kilometres south of Catalyst’s Plutonic processing plant along the Great Northern Highway in Western Australia.

The company stated the project already sits on existing mining leases and contains a total Resource of 206,000 ounces grading 3.0g/t gold.

This includes a higher-grade underground component of 140,000 ounces grading 4.6g/t gold.

Access to existing processing infrastructure can represent a strategic advantage for development-stage projects by potentially reducing future Capital intensity and accelerating development pathways.

Investors may continue monitoring how Catalyst integrates Old Highway into its broader production and processing strategy around the Plutonic operation.

Gold sector continues supporting exploration activity

The broader gold sector remains active as companies seek to extend mine lives and grow underground resource inventories across established Australian mining regions.

Gold exploration and development companies continue benefiting from investor interest in projects with existing infrastructure access, defined resources and near-term development potential.

At the same time, underground gold development projects remain exposed to drilling risk, operational complexity and fluctuating gold market conditions.

For Catalyst, continued success at Old Highway may strengthen the long-term production outlook around the Plutonic hub while supporting future reserve growth opportunities.

About the Company

Catalyst Metals (ASX: CYL) is an Australian gold producer and developer focused on gold Assets in Western Australia.

The company’s portfolio includes the Plutonic operation and associated regional development and exploration projects such as Old Highway.

Industry Trends and Market Context

The Australian gold sector continues benefiting from ongoing investor interest in resource growth, reserve replacement and long-life production assets. Companies with established infrastructure and regional processing hubs often pursue nearby satellite deposits to support extended operational mine life.

Underground gold mining opportunities remain attractive where higher-grade mineralisation can support improved production economics and operational flexibility. At the same time, the sector remains sensitive to gold price movements, development costs and labour availability.

Exploration success and reserve growth remain important valuation drivers across the gold mining industry.

Investment Risks and Challenges

Catalyst Metals faces risks associated with exploration outcomes, reserve growth and future mine development. Drilling results may not ultimately support economically viable underground resource expansion or extended mine life assumptions.

The company is also exposed to operational risks linked to underground mining complexity, development costs and gold price Volatility. Future project economics may depend on ongoing drilling success and efficient integration with existing processing infrastructure.

Permitting, labour availability and capital allocation decisions may also influence future project timelines and operational performance. Investors may continue monitoring whether additional drilling confirms the scale and continuity of mineralisation at depth.

A bullish perspective may focus on the resource growth potential at Zone 400, encouraging Zone 250 drilling results and the strategic proximity to the Plutonic processing hub. A bearish perspective may centre on underground development risk, exploration uncertainty and broader gold market volatility.