ACACIA RESEARCH CORP — SC 13D/A Filings
16 SC 13D/A filings on record
This page lists all SC 13D/A filings submitted to the SEC by ACACIA RESEARCH CORP (ACTG), sorted by most recent first. Each row links to the full filing on EdgarLookup. ACACIA RESEARCH CORP has filed 16 SC 13D/A documents with the SEC since 2012. To view all SEC filings by ACACIA RESEARCH CORP, see the full filings list.
All
10-K
10-K/A
10-K405
10-K405/A
10-Q
10-Q/A
10KSB
13F-HR
144
3
3/A
4
4/A
424B3
424B4
424B5
425
5
8-A12B
8-A12G
8-A12G/A
8-K
8-K/A
ARS
CORRESP
CT ORDER
D
DEF 14A
DEFA14A
DEFC14A
DEFR14A
DEFS14A
DFAN14A
EFFECT
NT 10-Q
POS AM
PRE 14A
PREC14A
PRER14A
PRES14A
PRRN14A
REGDEX
RW
S-3
S-3/A
S-3ASR
S-3MEF
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SC 13D/A | AMENDMENT NO. 4 TO THE SCHEDULE 13D | 0000921895-24-002743 | Nov 14, 2024 | — |
| SC 13D/A | AMENDMENT NO. 3 TO THE SCHEDULE 13D | 0000921895-24-000506 | Feb 15, 2024 | — |
| SC 13D/A | AMENDMENT NO. 2 TO THE SCHEDULE 13D | 0000921895-23-001683 | Jul 17, 2023 | — |
| SC 13D/A | AMENDMENT NO. 1 TO THE SCHEDULE 13D | 0000921895-23-000637 | Mar 3, 2023 | — |
| SC 13D/A | SPOK HOLDINGS, INC. | 0000902664-22-003434 | Jun 29, 2022 | — |
| SC 13D/A | AMENDMENT TO FORM SC 13/D | 0001683168-20-000750 | Mar 10, 2020 | — |
| SC 13D/A | IMMERSION CORPORATION | 0000902664-19-004674 | Dec 26, 2019 | — |
| SC 13D/A | SC 13D/A | 0001193125-19-204666 | Jul 29, 2019 | — |
| SC 13D/A | SC 13D/A | 0001193125-19-101167 | Apr 9, 2019 | — |
| SC 13D/A | SC 13D/A (AMENDMENT #4) | 0001193125-19-066741 | Mar 7, 2019 | — |
| SC 13D/A | SC 13D/A | 0001193125-19-009645 | Jan 15, 2019 | — |
| SC 13D/A | SC 13D/A | 0001193125-18-350371 | Dec 17, 2018 | — |
| SC 13D/A | SC 13D/A | 0001193125-18-342887 | Dec 6, 2018 | — |
| SC 13D/A | SC 13D/A | 0001104659-05-006756 | Feb 15, 2005 | — |
| SC 13D/A | SC 13D/A | 0001104659-04-002502 | Feb 3, 2004 | — |
| SC 13D/A | AMENDMENT TO SCHEDULE 13D | 0001005477-98-000840 | Mar 23, 1998 | — |