Investors are likely to keep an eye on the following small-cap stocks listed on the Australian Securities Exchange.

Bio-Gene Technology (ASX:BGT)

Bio-Gene Technology said the US Organic Materials Review Institute (OMRI) approved the listing of its Qcide oil extract as a botanical insecticide under the USDA National Organic Program in the OMRI Products List.

Hamelin Gold (ASX:HMG)

Hamelin Gold said recent air-core drilling extended shallow gold mineralization at the South Fremlins prospect, within the West Tanami project in Western Australia.

Redcastle Resources (ASX:RC1)

Redcastle Resources began a reverse circulation drilling program at the Morgan's Castle East and Sligo gold prospects, within the broader Redcastle project area in Western Australia.

Magnum Minerals (ASX:MGU)

Magnum Minerals started auger drilling at its Azimuth project in Brazil, focused on high-priority ionic clay rare earth element targets that have been interpreted and defined from radiometric anomalism and geology.

Dotz Nano (ASX:DTZ)

Dotz Nano extended the maturity dates for certain convertible notes by signing a second deed of variation with investment funds managed by Mercer Street Capital Partners. The first tranche of convertible notes will now mature on Feb. 5, 2026, and the second and third tranches will mature on Sept. 19, 2026.