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SEC Filings Group 3,4,5Annual FilingsCurrent ReportsMergers & AcquisitionsOtherProxy FilingsQuarterly FilingsRegistration Statements Filing year - Any -202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998199719961995 Items per page 102550 Filing date Form Description Filing Group View March 05, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000025.pdf 0000790816-12-000025.rtf View HTML March 05, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000026.pdf 0000790816-12-000026.rtf View HTML March 05, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000027.pdf 0000790816-12-000027.rtf View HTML March 05, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000028.pdf 0000790816-12-000028.rtf View HTML March 05, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000029.pdf 0000790816-12-000029.rtf View HTML March 12, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000033.pdf 0000790816-12-000033.rtf View HTML April 03, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000045.pdf 0000790816-12-000045.rtf View HTML April 03, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000046.pdf 0000790816-12-000046.rtf View HTML April 03, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000048.pdf 0000790816-12-000048.rtf View HTML April 03, 2012 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-12-000050.pdf 0000790816-12-000050.rtf View HTML Pagination First page « First Previous page ‹ Previous Page 1 Page 2 Page 3 Current page 4 Page 5 Page 6 Page 7 Page 8 Page 9 … Next page Next › Last page Last » Data provided by Kaleidoscope.