BEACH PETROLEUM LTD: Hector Gordon disposed of 157,903 June 2006 Bonus Options at an average price of $0.77 cents in on market trade on April 12, leaving him with a total direct interest in 635,m436 ordinary fully paid shares.
BHP BILLITON LTD; DR Argus acquired 6,500 ordinary shares at $A29.89 in on market trade on April 13. Following this transaction he now holds a total of 239.995 ordinary shares
CERAMIC FUEL CELLS LTD: Credit Sussie Holdings (Australia) Ltd and each of its related bodies corporate in the Credit Sussie Group became a substantial shareholder on April 5 with a voting power of 5.05%.
MAGELLAN PETROLEUM AUSTRALIA: Magellan Petroleum Corporation increased its substantial shareholding to 79.03% on April 13.
OIL SEARCH LTD: Westpac Banking Corporation became a substantial shareholder on April 11 with a voting power of 5%.
PETSEC ENERGY LTD: Den Duyts Corporation PL and its associates decreased its substantial shareholding to 19.62% on March 3.
SDS CORPORATION LTD: UBS Nominees Pty Ltd and its related bodies corporate increased its substantial shareholding to 12.98% on April 12.
TAP OIL LTD: WestLB Mellon Asset Management (Australia) Pty Ltd became a substantial shareholder on April 11 with a voting power of 5.08%.
TOMAHAWK ENERGY LTD: Robert Rosenthal acquired 500,000 plan options on April 11, which were issued free, as approved by shareholders on 28 March 2006.
WORLEY PARSONS LTD: Barclay Global Investors Australia Ltd increased its substantial shareholding to 6.26% on April 11.