Adding to their holdings in the most recent purchases have been managing director Simon Paull and non-executive director Gerrard Hall.
On November 19 Paull acquired a further 700,000 shares in an on-market transaction valued at $14,000.
He now holds 1 million shares in an indirect interest.
On November 20 Hall acquired a further 500,000 shares in an on-market transaction valued at $10,500 and now holds 2.5 million shares in a direct interest.
Other recent purchases
These purchases come hot on the heels of other on-market transactions.
On November 18, Hall acquired 1 million shares in a transaction valued at $19,842 while earlier in the day November 19 Paull purchased 300,000 shares valued at almost $3,000.
Chairman Rob Scott purchased 154,253 shares on November 19 valued at almost $3,000 which took his overall holding to 1 million in an indirect interest.
Castillo is advancing a three-pillar strategy to become a mid-tier copper producer.
Pillar I – Cangai Copper Mine: Plans are in place to advance this project through to bankable feasibility study;
Pillar II – Mt Oxide project: Located in the Mt Isa copperbelt with three priority targets including a sizeable massive sulphide conductor, historic deposit and mine; and
Pillar III – Zambia: Four highly prospective assets across the copperbelt which include priority Mkushi and Luanshya projects that are near operating copper mines.