Great Artesian Oil & Gas Ltd director Raymond Shaw has increased his direct interest in the company through exercising unlisted options to acquire 3 million shares at a value of $600,000. He now holds 6.5 million shares directly and indirectly, at a value of almost $2.2 million. Ridley Corporation Ltd managing director Matthew Bickford-Smith has decreased his direct interest in the company by selling 350,000 shares at a value of $382,900. He now holds 488,000 shares at a value of $534,000. Echelon Resources Ltd managing director Matthew Rimes has increased his direct interest in the company by acquiring 2 million shares through an exercise of options, at a value of $500,000. He now holds 2.3 million shares at a value of $1.2 million.