X0303 4 2010-09-20 0 0000740761 BUCYRUS INTERNATIONAL INC BUCY 0001297861 Bosbous John F PO BOX 500 1100 MILWAUKEE AVENUE SOUTH MILWAUKEE WI 53172 0 1 0 0 Treasurer Common Stock 2010-09-20 4 S 0 2000 71.79 D 11175 D Common Stock 6922 D Common Stock 500 D Common Stock 2800 D Common Stock 750 D Stock Appreciation Rights 59.48 2010-02-23 Common Stock 2800 2800 D Stock Appreciation Rights 13.52 2019-02-24 Common Stock 11350 11350 D Stock Appreciation Rights 51.69 2018-02-20 Common Stock 2300 2300 D Stock Appreciation Rights 19.882 2016-02-16 Common Stock 42000 42000 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 14, 2010. The price in column 4 is a weighted average price. The prices actually received ranged from $71.50 to $72.44. The reporting person has provided to the issuer, and will provide to any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range for all transactions reported in this Form 4 utilizing an average weighted price. Grant to reporting person of "base" restricted stock under the Omnibus Incentive Plan 2007. The "base" restricted stock vested on December 31, 2009. Grant to reporting person of "premium" restricted stock under the Omnibus Incentive Plan 2007. The "premium" restricted stock fully vested on December 31, 2009. Grant to reporting person of restricted stock under the omnibus Incentive Plan 2007. The restricted stock vests on December 2011. Grant to reporting person of restricted stock under the Omnibus Incentive Plan 2007. The restricted stock vests on December 2012. Grant to reporting person of restricted stock under the Omnibus Incentive Plan 2007. The restricted stock vests on December 2013. The stock appreciation rights are granted under the Omnibus Incentive Plan 2007 and will incrementally vest 10%, 15%, 25% and 50%, respectively, on December 31, 2010, 2011, 2012 and 2013. The stock appreciation rights are granted under the Omnibus Incentive Plan 2007 and will incrementally vest 10%, 15%, 25% and 50%, respectively, on December 31, 2009, 2010, 2011 and 2012. The stock appreciation rights are granted under the Omnibus Incentive Plan 2007 and will incrementally vest 10%, 15%, 25% and 50%, respectively, on December 31, 2008, 2009, 2010 and 2011. The stock appreciation rights are granted under the Omnibus Incentive Plan 2007 and will incrementally vest 10%, 15%, 25% and 50%, respectively, on December 31, 2006, 2007, 2008 and 2009. /s/John F. Bosbous 2010-09-21