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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (DIMENSIONAL FUND ADVISORS LP) |
02/09/24 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (DIMENSIONAL FUND ADVISORS LP) |
02/10/23 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (VANGUARD INDEX FUNDS) |
02/10/22 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (VANGUARD GROUP INC) |
02/10/22 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (DIMENSIONAL FUND ADVISORS LP) |
02/08/22 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (DIMENSIONAL FUND ADVISORS LP) |
02/16/21 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (VANGUARD GROUP INC) |
02/10/21 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (VANGUARD INDEX FUNDS) |
02/08/21 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (CANNELL CAPITAL LLC) |
02/14/20 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (DIMENSIONAL FUND ADVISORS LP) |
02/12/20 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (CANNELL CAPITAL LLC) |
02/14/19 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (DIMENSIONAL FUND ADVISORS LP) |
02/08/19 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (WELLS FARGO & COMPANY/MN) |
01/22/19 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (DIMENSIONAL FUND ADVISORS LP) |
02/09/18 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (WELLS FARGO & COMPANY/MN) |
04/10/17 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (PERRITT CAPITAL MANAGEMENT INC) |
02/14/17 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (DIMENSIONAL FUND ADVISORS LP) |
02/09/17 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (DIMENSIONAL FUND ADVISORS LP) |
02/09/16 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (PERRITT CAPITAL MANAGEMENT INC) |
02/04/16 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (WEDBUSH EDWARD WILLIAM) |
02/18/15 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (PERRITT CAPITAL MANAGEMENT INC) |
02/13/15 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (DIMENSIONAL FUND ADVISORS LP) |
02/05/15 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (WEDBUSH CAPITAL, INC.) " (WEDBUSH, INC.) |
02/18/14 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (PERRITT CAPITAL MANAGEMENT INC) |
02/14/14 |
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SC 13G/A |
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PERMA-PIPE INTERNATIONAL HOLDINGS, INC." (MFRI INC) " (DIMENSIONAL FUND ADVISORS LP) |
02/10/14 |
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