Excluding other net charges and gains, operating expenses decreased by 9% to $85.0 million for the third quarter of 2012, from $93.3 million for the third quarter of 2011.
Selling, general and administrative
|Three Months Ended||Nine Months Ended|
|September 30||September 30|
|2.3||1.8||Depreciation and amortization||7.4||6.0|
SG&A expenses decreased slightly to $48.0 million for the third quarter of 2012, from $48.9 million for the same period of 2011, primarily as a result of lower U.S. Tysabri sales and marketing expenses, offset by higher non-cash stock compensation expense.