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ENVIRONMENTAL TECTONICS CORP Form SC 13D: Beneficial ownership report (active)

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ENVIRONMENTAL TECTONICS CORP Form SC 13D: Beneficial ownership report (active)

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

  • 2012-10-16: Form SC 13D/A; Description H F LENFEST SC13D/A 9-28-2012; Document sc13da.htm.
  • 2009-07-07: Form SC 13D/A; Description FORM SC 13D/A; Document w74734scsc13dza.htm.
  • 2008-09-12: Form SC 13D/A; Description AMENDMENT # 7; Document w67168sc13dza.htm.
  • 2008-02-21: Form SC 13D/A; Description SCHEDULE 13D/A; Document w50211sc13dza.htm.
FiledFormPeriod of reportDescriptionDocument
2012-10-16SC 13D/AH F LENFEST SC13D/A 9-28-2012sc13da.htm
2009-07-07SC 13D/AFORM SC 13D/Aw74734scsc13dza.htm
2008-09-12SC 13D/AAMENDMENT # 7w67168sc13dza.htm
2008-02-21SC 13D/ASCHEDULE 13D/Aw50211sc13dza.htm
2007-09-19SC 13D/ASCHEDULE 13D, AMENDMENT NO. 5 ENVIRONMENTAL TECTONICS CORPORATIONw39833sc13dza.htm
2007-08-02SC 13D/AAMENDMENT TO SCHEDULE 13Dd48688sc13dza.htm
2007-07-23SC 13D/ASCHEDULE 13D, AMENDMENT NO. 4 ENVIRONMENTAL TECTONICS CORPORATIONw37380sc13dza.htm
2007-01-08SC 13D/AAMENDMENT TO SCHEDULE 13Dd42583sc13dza.htm
2006-08-17SC 13D/ASCH 13D/Ab414583_sc13da.txt
2006-04-25SC 13D/ASC 13D/Asc-thirteenda.txt
2006-02-14SC 13D/AAMENDMENT TO SCHEDULE 13Dd33026sc13dza.htm
2005-06-30SC 13DBeneficial ownership report (active)b407559_13d.txt
2005-02-22SC 13D/ASC 13D/Asc13da.txt
2003-05-05SC 13D/ASC 13D/Asch13da.txt
2003-03-07SC 13D/ASC 13D/Asc13d-a.txt
2003-03-03SC 13DSC 13Dsc13d.txt
2003-02-28SC 13DSCH13-D.TXTsch13-d.txt
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