$ASUR SEC Filings

Filing Filed On
424B3 19 Apr 2024
424B3 19 Apr 2024
424B3 22 Apr 2021
424B3 22 Apr 2021
FORM 424(B)(3) - 7/19/2001 20 Jul 2001
THIRD SUPPLEMENT - PROSPECTUS 23 May 2000
SECOND PROSPECTUS SUPPLEMENT 27 Jan 2000
FORM 424(B)(3) FOR VTEL CORPORATION 22 Jul 1999
PROSPECTUS FILED PURSUANT TO RULE 424(B)(3)-VTEL 02 Jun 1999
FORM 424B3 13 Jan 1998
DEFINITIVE FILING PROXY STATEMENT 25 Apr 1997