Offer price for open offers must be the highest of parameters including negotiated price, VWAP, recent acquisitions, or valuer report. The offer price for open offers must be the highest of prescribed parameters (negotiated price, VWAP over specified periods, highest recent acquisition prices, valuer-determined price, or computed per-share value where applicable), with adjusted timelines and disclosure requirements for indirect acquisitions, mandatory valuation and methodology disclosure when the target exceeds threshold proportions of the acquired business, treatment of convertible instruments and premiums as price parameters, post-offer price equalisation to accepted shareholders for later higher acquisitions, and permitted adjustments for specified corporate actions.