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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 May 31, 2013 8-K Report of unscheduled material events or corporate event Current Reports 0000790816-13-000088.pdf 0000790816-13-000088.rtf 0000790816-13-000088.xls View HTML May 31, 2013 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-13-000099.pdf 0000790816-13-000099.rtf View HTML May 31, 2013 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-13-000098.pdf 0000790816-13-000098.rtf View HTML May 31, 2013 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-13-000097.pdf 0000790816-13-000097.rtf View HTML May 31, 2013 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-13-000096.pdf 0000790816-13-000096.rtf View HTML May 31, 2013 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-13-000095.pdf 0000790816-13-000095.rtf View HTML May 31, 2013 4 Statement of changes in beneficial ownership of securities 3,4,5 0000790816-13-000100.pdf 0000790816-13-000100.rtf View HTML May 03, 2013 10-Q Quarterly report which provides a continuing view of a company's financial position Quarterly Filings 0000790816-13-000086.pdf 0000790816-13-000086.rtf 0000790816-13-000086.xls EX-101.INS - XBRL INSTANCE DOCUMENT View HTML April 25, 2013 8-K Report of unscheduled material events or corporate event Current Reports 0000790816-13-000084.pdf 0000790816-13-000084.rtf 0000790816-13-000084.xls View HTML April 23, 2013 UPLOAD UPLOAD Other 0000000000-13-021711.pdf View HTML Pagination First page « First Previous page ‹ Previous … Page 66 Page 67 Page 68 Page 69 Current page 70 Page 71 Page 72 Page 73 Page 74 … Next page Next › Last page Last » Data provided by Kaleidoscope.