AMPCO PITTSBURGH CORP — SCHEDULE 13D/A Filings
3 SCHEDULE 13D/A filings on record
This page lists all SCHEDULE 13D/A filings submitted to the SEC by AMPCO PITTSBURGH CORP (AP), sorted by most recent first. Each row links to the full filing on EdgarLookup. AMPCO PITTSBURGH CORP has filed 3 SCHEDULE 13D/A documents with the SEC since 2007. To view all SEC filings by AMPCO PITTSBURGH CORP, see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
10-Q/A
15-12B
25
25-NSE
3
3/A
4
4/A
424B3
425
5
8-A12B
8-K
8-K/A
ARS
CERT
CORRESP
DEF 14A
DEFA14A
DEFC14A
EFFECT
FWP
NO ACT
NT 10-Q
POS AM
PRE 14A
PREC14A
RW
S-1
S-1/A
S-3
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-I
SC TO-I/A
SCHEDULE 13D
SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
SD
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13D/A | — | 0001193125-25-300922 | Nov 26, 2025 | — |
| SCHEDULE 13D/A | — | 0000921895-25-003128 | Nov 14, 2025 | — |
| SCHEDULE 13D/A | — | 0000807249-25-000106 | Aug 4, 2025 | — |