Stillwater Responds to Clinton Group′s Recent Press Release

Stillwater Mining Company (NYSE: SWC) (TSX: SWC.U) ('Stillwater? or the
'Company?) today responded to a press release issued by the Clinton
Group, Inc. ('Clinton Group?), a 1.3% shareholder, in advance of today′s
2013 Annual Shareholders Meeting set for May 2, 2013.

Patrick M. James, Stillwater′s lead independent director, said, 'Clinton
Group′s press release is an unfortunate attack that is without merit and
the annual meeting will proceed later today as planned. Our annual
meeting was scheduled long ago and set at our premier mine location to
show shareholders the tremendous progress we have made. Regardless of
the outcome at today′s annual meeting, we are certain that the new Board
will be committed to maintaining the positive momentum that the Company
and its employees have achieved, particularly at our core Montana
operations. Our director nominees are ready to be part of a newly
elected Board that will work to realize, for shareholders, the Company′s
full potential and continue the recent operational and financial
achievements, as evidenced by our first quarter earnings results.?

All shareholders of record as of March 6, 2013 are entitled to vote at
the 2013 Annual Shareholders Meeting on May 2, 2013. Stillwater
continues to encourage all shareholders to vote only their WHITE proxy
card. For more information about Stillwater′s 2013 Annual Shareholders
Meeting, please visit www.supportstillwater.com.

About Stillwater Mining Company

Stillwater Mining Company is the only U.S. producer of palladium and
platinum and is the largest primary producer of platinum group metals
outside of South Africa and the Russian Federation. The Company′s shares
are traded on the New York Stock Exchange under the symbol SWC and on
the Toronto Stock Exchange under the symbol SWC.U. Information on
Stillwater Mining Company can be found at its website: www.stillwatermining.com.

Some statements contained in this news release are forward-looking
statements within the meaning of Section 27A of the Securities Act of
1933, as amended, and Section 21E of the Securities Exchange Act of
1934, as amended, and, therefore, involve uncertainties or risks that
could cause actual results to differ materially. These statements may
contain words such as 'believes,' 'anticipates,' 'plans,' 'expects,'
'intends,' 'projects', 'estimates,' 'forecast,' 'guidance,' or similar
expressions. These statements are not guarantees of the Company's future
performance and are subject to risks, uncertainties and other important
factors that could cause our actual performance or achievements to
differ materially from those expressed or implied by these
forward-looking statements. Such statements include, but are not limited
to, comments regarding expansion plans, costs, grade, production and
recovery rates, permitting, financing needs, the terms of future credit
facilities and capital expenditures, increases in processing capacity,
cost reduction measures, safety, timing for engineering studies, and
environmental permitting and compliance, litigation, labor matters and
the palladium and platinum market. Additional information regarding
factors, which could cause results to differ materially from
management's expectations, is found in the section entitled 'Risk
Factors' in the Company's 2012 Annual Report on Form 10-K and in
subsequent filings with the United States Securities & Exchange
Commission. The Company intends that the forward-looking statements
contained herein be subject to the above-mentioned statutory safe
harbors. Investors are cautioned not to rely on forward-looking
statements. The Company disclaims any obligation to update
forward-looking statements.

INVESTORS

Stillwater Mining Company

Mike Beckstead,
406-373-8971

or

Innisfree M&A Incorporated

Arthur
Crozier / Jennifer Shotwell / Scott Winter

212-750-5833

or

MEDIA

Sard
Verbinnen & Co

Dan Gagnier / Michael Henson

212-687-8080