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RESEARCH FRONTIERS INC — 4/A Filings

8 4/A filings on record

This page lists all 4/A filings submitted to the SEC by RESEARCH FRONTIERS INC (REFR), sorted by most recent first. Each row links to the full filing on EdgarLookup. RESEARCH FRONTIERS INC has filed 8 4/A documents with the SEC since 1995. To view all SEC filings by RESEARCH FRONTIERS INC, see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-K405 10-Q 10-Q/A 3 3/A 4 4/A 424B2 424B3 424B5 8-A12G 8-A12G/A 8-K 8-K/A CORRESP CT ORDER D DEF 14A DEFA14A EFFECT PRE 14A S-3 S-3/A S-8 SC 13D SC 13G SC 13G/A SCHEDULE 13G UPLOAD
Form Description Accession Number Filed Period
4/A 0001493152-20-007330 Apr 29, 2020 Dec 31, 2019
4/A 0001493152-20-007329 Apr 29, 2020 Dec 31, 2019
4/A 0001493152-20-007328 Apr 29, 2020 Dec 31, 2019
4/A 0001493152-19-009823 Jun 27, 2019 Jun 25, 2019
4/A AMENDMENT TO STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 0001206774-13-000098 Jan 7, 2013 Jan 1, 2013
4/A AMENDMENT TO STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 0001206774-13-000097 Jan 7, 2013 Jan 1, 2013
4/A PRIMARY DOCUMENT 0001223062-04-000011 Jun 15, 2004 Jun 4, 2004
4/A PRIMARY DOCUMENT 0001223062-03-000002 May 8, 2003 May 7, 2003