Sources familiar with Heritage Bank's senior retail notes offer say the transaction's bookbuild closed three days ahead of the scheduled May 24 date on the back of significant demand. The deal's final size is likely to be in the A$220-250 million (US$215.2-244.5 million) range – nearly double its launch volume – and one source tells KangaNews the offer attracted oversubscriptions of almost four times the original issue amount.