SAMSON OIL & GAS ORDINARY SHARES ADDED TOSTANDARD & POOR’S ASX...

SAMSON OIL & GAS ORDINARY SHARES ADDED TO
STANDARD & POOR’S ASX 300
Denver 1700 hours September 18th, Perth 0700 hours September 19th, 2011
Samson Oil & Gas Limited (ASX: SSN; NYSE AMEX: SSN) advises that, effective with the close of
trading on Friday, September 16th, S& P Indices has added Samson’s ordinary shares, as traded
on the Australian Securities Exchange, to the S&P/ASX 300. The S&P/ASX indices are real-time,
market capitalization-weighted indices that include the largest and most liquid stocks in the
Australian market. According to Standard & Poor’s, the S&P/ASX 300 is extensively used as a
performance benchmark index. The index is highly liquid, float-adjusted and includes up to 300 of
Australia’s largest securities by float-adjusted market capitalization. The S&P/ASX 300 index
includes the large cap, mid cap and small cap components of the S&P/ASX index family. The index
covers approximately 81% of Australian equity market capitalization.
Samson notes that some of the marked increase in trading volume for its ordinary shares on the
ASX on Friday, September 16, when volume reached 41 million shares, may have been
attributable to portfolio managers purchasing Samson’s ordinary shares to match their index
tracking portfolios prior to the effectiveness of the index listing. Samson is, however, unable to
predict the long term impact on the trading volume or price of its ordinary shares resulting from
being added to the S&P/ASX 300.
Samson’s Ordinary Shares are traded on the Australian Securities Exchange under the symbol
"SSN". Samson's American Depository Shares (ADSs) are traded on the New York Stock
Exchange AMEX under the symbol "SSN". Each ADS represents 20 fully paid Ordinary Shares of
Samson. Samson has a total of 1,996 million ordinary shares issued and outstanding (including
250 million options exercisable at AUD 1.5 cents), which would be the equivalent of 99.8 million
ADSs. Accordingly, based on the NYSE AMEX closing price of US$2.68 per ADS on September
16, 2011 the Company has a current market capitalization of approximately US$266.2 million.
Correspondingly, based on the ASX closing price of A$0.14 on September 16th, 2011, the
Company has a current market capitalization of A$275.6 million. The options have been valued at
their closing price of A$0.125 on September 16th, 2011 and translated to US$ at the current
exchange of 1.0345 for purposes of inclusion in the US$ market capitalization calculation.
For and on behalf of the board of
SAMSON OIL & GAS LIMITED