Perma-Pipe International Holdings, Inc. — SC 13G/A Filings
81 SC 13G/A filings on record
This page lists all SC 13G/A filings submitted to the SEC by Perma-Pipe International Holdings, Inc. (PPIH), sorted by most recent first. Each row links to the full filing on EdgarLookup. Perma-Pipe International Holdings, Inc. has filed 81 SC 13G/A documents with the SEC since 1996. To view all SEC filings by Perma-Pipe International Holdings, Inc., see the full filings list.
All
10-12B
10-K
10-K/A
10-K405
10-Q
10-Q/A
144
144/A
3
4
4/A
424B2
424B5
8-A12B
8-A12G
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEFA14A
DEFM14A
DEFR14A
EFFECT
NO ACT
NT 10-K
NT 10-Q
PRE 14A
PREM14A
S-3
S-3/A
S-8
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC TO-I
SC TO-I/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SC 13G/A | — | 0001270974-08-000039 | Feb 15, 2008 | — |
| SC 13G/A | — | 0001287649-08-000024 | Feb 15, 2008 | — |
| SC 13G/A | — | 0001130381-08-000006 | Feb 15, 2008 | — |
| SC 13G/A | MFRI, INC. | 0000902664-08-000437 | Feb 1, 2008 | — |
| SC 13G/A | 13G FILING | 0000937394-07-000117 | Aug 8, 2007 | — |
| SC 13G/A | — | 0001130381-07-000004 | Feb 13, 2007 | — |
| SC 13G/A | MFRI, INC. | 0000902664-07-000543 | Feb 13, 2007 | — |
| SC 13G/A | 13G FILING | 0000937394-07-000064 | Feb 12, 2007 | — |
| SC 13G/A | 13G FILING/OCTOBER 2006 | 0000937394-06-000120 | Nov 13, 2006 | — |
| SC 13G/A | — | 0001130381-06-000006 | Feb 14, 2006 | — |
| SC 13G/A | MFRI | 0000937394-06-000043 | Feb 3, 2006 | — |
| SC 13G/A | — | 0001130381-05-000005 | Feb 15, 2005 | — |
| SC 13G/A | MFRI, INC. | 0000902664-05-000274 | Feb 8, 2005 | — |
| SC 13G/A | HAI_MFRI11 | 0000937394-05-000049 | Jan 19, 2005 | — |
| SC 13G/A | — | 0001130381-04-000006 | Feb 13, 2004 | — |
| SC 13G/A | HAI_MFRI10 | 0000937394-04-000029 | Feb 12, 2004 | — |
| SC 13G/A | ANNUAL 13G FILING-MFRI9 | 0000937394-03-000026 | Feb 13, 2003 | — |
| SC 13G/A | — | 0001130381-03-000007 | Feb 12, 2003 | — |
| SC 13G/A | AMENDMENT 8 | 0000940180-02-000203 | Jan 31, 2002 | — |
| SC 13G/A | MFRI, INC. | 0000950131-01-000348 | Jan 23, 2001 | — |
| SC 13G/A | MFRI INC | 0000950131-00-000460 | Jan 26, 2000 | — |
| SC 13G/A | SCHEDULE 13G/A | 0000950131-99-000501 | Feb 2, 1999 | — |
| SC 13G/A | AMEND. #4--MFRI, INC. | 0000950131-98-004247 | Jul 10, 1998 | — |
| SC 13G/A | MFRI, INC. | 0000950131-98-000585 | Feb 3, 1998 | — |
| SC 13G/A | MFRI, INC. | 0000950131-98-000571 | Feb 3, 1998 | — |
| SC 13G/A | AMENDMENT #2 -- MFRI, INC. | 0000950131-97-006117 | Oct 10, 1997 | — |
| SC 13G/A | SC 13G/A | 0000950137-97-000689 | Feb 14, 1997 | — |
| SC 13G/A | — | 0000914122-97-000002 | Jan 15, 1997 | — |
| SC 13G/A | 13-G/A | 0000912057-96-001647 | Feb 7, 1996 | — |
| SC 13G/A | SCHEDULE 13G - 7-10-95 - MFRI INCORPORATED | 0000315066-95-002928 | Jul 7, 1995 | — |
| SC 13G/A | SCHEDULE 13G - 2-14-95 - MFRI INCORPORATED | 0000315066-95-001755 | Feb 9, 1995 | — |