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GSE SYSTEMS, INC. Form SC 13D: Beneficial ownership report (active)

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GSE SYSTEMS, INC. Form SC 13D: Beneficial ownership report (active)

Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.

  • 2024-10-11: Form SC 13D; Description SCHEDULE 13D; Document tm2426106d1_sc13d.htm.
  • 2024-05-06: Form SC 13D; Description LOUDERMILK SCHEDULE 13D; Document sc_13d.htm.
  • 2016-01-26: Form SC 13D/A; Description SCHEDULE 13D AMENDMENT NO. 1; Document d29727dsc13da.htm.
  • 2015-12-17: Form SC 13D; Description SC 13D; Document d105261dsc13d.htm.
FiledFormPeriod of reportDescriptionDocument
2024-10-11SC 13DSCHEDULE 13Dtm2426106d1_sc13d.htm
2024-05-06SC 13DLOUDERMILK SCHEDULE 13Dsc_13d.htm
2016-01-26SC 13D/ASCHEDULE 13D AMENDMENT NO. 1d29727dsc13da.htm
2015-12-17SC 13DSC 13Dd105261dsc13d.htm
2015-11-24SC 13D/ASC 13D/Aa15-23943_1sc13da.htm
2015-05-27SC 13D/ASC 13D/Aa15-12813_1sc13da.htm
2014-12-30SC 13DSC 13Da14-26841_1sc13d.htm
2012-05-18SC 13D/ASC 13D/Ad355641dsc13da.htm
2012-04-20SC 13D/ASC 13D/Ad338258dsc13da.htm
2012-04-19SC 13D/ASCHEDULE 13D/Ad337100dsc13da.htm
2012-03-14SC 13DSC 13Dd315290dsc13d.htm
2005-10-28SC 13D/AGP STRATEGIES SCHEDULE 13D/Agp13d.txt
2005-06-03SC 13DSCHEDULE 13De953960sch13d.htm
2003-10-30SC 13DGSE SYTEMS SCHEDULE 13Dgse13d.txt
1999-07-09SC 13D/ABeneficial ownership report (active)
1999-07-09SC 13D/ABeneficial ownership report (active)
1997-07-30SC 13DBeneficial ownership report (active)
1997-07-30SC 13DBeneficial ownership report (active)
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