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.
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 |