Not sure why this did not appear on my previous post but here is the mention of ADR's as of 30 Nov 2009
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American Depository Receipts (ADR)
As at 30 November 2009 there were 18,618 ADR’s with each ADR comprising 500 shares. This represents 9,304,000 Sirius ordinary shares or 1.48% of the issued share capital.
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