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Form SC 13G/A INSTEEL INDUSTRIES INC Filed by: WELLINGTON MANAGEMENT GROUP LLP Feb 9, 2017 10:34AM
Form SC 13G/A INSTEEL INDUSTRIES INC Filed by: WELLINGTON MANAGEMENT GROUP LLP Feb 11, 2016 01:34PM
Form SC 13G INSTEEL INDUSTRIES INC Filed by: WELLINGTON MANAGEMENT GROUP LLP Feb 12, 2015 10:45AM