Step aside Gus, page-57

There is your answer Manny in the latest Edgar update. 20 shares on the button... or $12.00AUD or $8.65USD making PEN very cheap on the NYSE.

ITEM 12. DESCRIPTION OF SECURITIES OTHER THAN EQUITY SECURITIES

D. American Depositary Shares
"The Bank of New York Mellon, as depositary, will register and deliver American Depositary Shares, also referred to as ADSs. Each ADS will represent 20 ordinary shares (or a right to receive 20 ordinary shares) deposited with National Australia Bank Ltd., as custodian for the depositary."
http://www.sec.gov/Archives/edgar/data/1653742/000106299316009903/form20fr12ba.htm#page_96