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Feb 12, 2020 02:00PM
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Feb 3, 2020 04:16PM Form SC 13G/A POWELL INDUSTRIES INC Filed by: DEPRINCE RACE & ZOLLO INC
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Apr 6, 2018 09:58AM
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Feb 8, 2018 11:29AM Form SC 13G/A POWELL INDUSTRIES INC Filed by: HEARTLAND ADVISORS INC
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Feb 9, 2017 10:22AM Form SC 13G POWELL INDUSTRIES INC Filed by: DIMENSIONAL FUND ADVISORS LP
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