Takeover amendment clarifies buy-back and preferential issue triggers for open offer obligations and disclosure requirements. Amendments clarify open offer triggers and acquisition mechanisms: buy-backs refer to buy-backs by the target company and measure voting-rights at buy-back closure; board-authorised preferential issues are recognised as a mode triggering obligations; combined acquisitions require a public announcement at the first acquisition with disclosure of planned subsequent acquisitions; acquisitions via preferential issue or exchange settlement are permitted subject to escrow and suspension of voting rights; an open offer triggered by a proposed preferential issue cannot be withdrawn if the issue fails; disclosure obligations for five percent holders are revised to capture changes exceeding two percent.