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GEOSPACE TECHNOLOGIES CORP — S-1/A Filings

2 S-1/A filings on record

This page lists all S-1/A filings submitted to the SEC by GEOSPACE TECHNOLOGIES CORP (GEOS), sorted by most recent first. Each row links to the full filing on EdgarLookup. GEOSPACE TECHNOLOGIES CORP has filed 2 S-1/A documents with the SEC since 1997. To view all SEC filings by GEOSPACE TECHNOLOGIES CORP, see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-K405 10-Q 10-Q/A 144 3 3/A 4 4/A 424B1 424B3 424B4 8-A12B 8-K 8-K/A ARS CORRESP DEF 14A DEFA14A EFFECT FWP NT 10-Q PRE 14A S-1 S-1/A S-3 S-3/A S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13G SCHEDULE 13G/A SD UPLOAD
Form Description Accession Number Filed Period
S-1/A OYO GEOSPACE CORPORATION - AMENDMENT #2 0000950129-97-004859 Nov 18, 1997 —
S-1/A OYO GEOSPACE CORPORATION - AMEND. #1 TO 333-36727 0000950129-97-004517 Nov 5, 1997 —