FILINGS
| PPIH 0000914122 | |||
|---|---|---|---|
| Filing Date | Form Type | Description | Document |
| 2016-06-22 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-06-21 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-06-21 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-06-16 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-06-15 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-06-15 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-06-15 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-06-10 | 10-Q | 10-Q | View Document |
| 2016-05-19 | DEFA14A | DEFA14A NOTICE OF INTERNET AVAILABILITY | View Document |
| 2016-05-19 | DEF 14A | DEF 14A MFRI 2016 PROXY | View Document |
| 2016-05-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-05-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-05-13 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-05-11 | 4/A | PRIMARY DOCUMENT | View Document |
| 2016-05-05 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-04-28 | 10-K | 10-K | View Document |
| 2016-04-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-04-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-04-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-04-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-04-06 | 8-K | 8-K CANADIAN ACQUISITION | View Document |
| 2016-03-24 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-03-24 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-03-24 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-03-02 | 8-K | 8-K BMO AMENDMENT AND EMPLOYMENT COMP AMENDMENT | View Document |
| 2016-02-09 | SC 13G/A | SCHEDULE 13G/A | View Document |
| 2016-02-04 | 8-K | 8-K DISPOSITION OF FILTRATION PRODUCTS | View Document |
| 2016-02-04 | SC 13G/A | View Document | |
| 2015-12-28 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-12-08 | 10-Q | 10-Q MFRI OCTOBER 31, 2015 | View Document |
| 2015-09-18 | 10-Q | 10-Q | View Document |
| 2015-09-14 | NT 10-Q | NT 10-Q JULY 2015 | View Document |
| 2015-06-30 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-30 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-29 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-29 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-25 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-25 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-25 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-25 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-25 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-23 | 8-K | 8-K SUBMISSION OF VOTE | View Document |
| 2015-06-23 | 4 | PRIMARY DOCUMENT | View Document |
| 2015-06-12 | 10-Q | 10-Q APRIL 30, 2015 | View Document |
| 2015-06-11 | 8-K | 8-K OTHER CLARIFICATION ON MEETING ATTENDANCE | View Document |
| 2015-05-08 | DEFA14A | DEFA14A NOTICE OF INTERNET AVAILABILITY | View Document |
| 2015-05-08 | DEF 14A | DEF 14A MFRI 2015 PRORXRY | View Document |
| 2015-04-16 | 10-K | 10-K | View Document |
| 2015-04-14 | 8-K | 8-K | View Document |
| 2015-02-18 | SC 13G/A | View Document | |
| 2015-02-13 | SC 13G/A | View Document | |
| 2015-02-10 | 8-K | 8-K STOCK REPURCHASE PROGRAM | View Document |
| 2015-02-05 | SC 13G/A | SCHEDULE 13G/A | View Document |
| 2014-12-29 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-12-15 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-12-15 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-12-09 | 10-Q | 10-Q | View Document |
| 2014-09-25 | 8-K | 8-K BMO AGREEMENT | View Document |
| 2014-09-09 | 10-Q | 10-Q | View Document |
| 2014-07-02 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-07-02 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-07-02 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-20 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-19 | 8-K | 8-K | View Document |
| 2014-06-19 | 3 | PRIMARY DOCUMENT | View Document |
| 2014-06-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-06-10 | 10-Q | 10-Q | View Document |
| 2014-05-08 | DEFA14A | DEFA14A NOTICE OF INTERNET AVAILABILITY | View Document |
| 2014-05-08 | DEF 14A | DEF 14A PROXY STATEMENT | View Document |
| 2014-04-28 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-04-23 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-04-22 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-04-15 | 8-K | 8-K APPOINTMENT JEROME WALKER | View Document |
| 2014-04-15 | 10-K | 10-K | View Document |
| 2014-04-09 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-04-09 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-03-25 | 8-K | 8-K | View Document |
| 2014-02-18 | SC 13G/A | View Document | |
| 2014-02-14 | SC 13G/A | View Document | |
| 2014-02-10 | SC 13G/A | SCHEDULE 13G/A | View Document |
| 2014-02-05 | SC 13G/A | 13G AMENDMENT | View Document |
| 2014-02-03 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-01-14 | 4 | PRIMARY DOCUMENT | View Document |
| 2014-01-13 | 4 | PRIMARY DOCUMENT | View Document |
| 2013-12-09 | 3 | PRIMARY DOCUMENT | View Document |
| 2013-12-09 | 10-Q | 10-Q | View Document |
| 2013-12-06 | SC 13G/A | SCHEDULE 13G/A | View Document |
| 2013-12-02 | 4 | PRIMARY DOCUMENT | View Document |
| 2013-11-04 | 4/A | PRIMARY DOCUMENT | View Document |
| 2013-11-01 | 4 | PRIMARY DOCUMENT | View Document |
| 2013-10-09 | 4 | PRIMARY DOCUMENT | View Document |
| 2013-10-01 | 4 | PRIMARY DOCUMENT | View Document |
| 2013-09-12 | 10-Q | 10-Q | View Document |
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