Ann: Update - Notification of buy-back - SWF, page-2

End of the first month of the buyback and they bought 583,423 shares for $76k or 2.5% of the 23,430,413 shares planned to be purchased, so at this rate 3+ years to complete.

Total volume traded on ASX for the month was 3,472,774, not sure volume on CBOE, probably another 10-15% of that volume. Means they purchased around 15% of total volume traded in the month.