Form SC 13D/A SPARTON CORP Filed by: GAMCO INVESTORS, INC. ET AL Dec 13, 2018 04:01PM
Breach Inlet Capital Sends Letter to Board of Sparton Corp. Aug 29, 2018 09:00AM
Form SC 13D/A SPARTON CORP Filed by: GAMCO INVESTORS, INC. ET AL Aug 3, 2018 04:11PM
Form SC 13D/A SPARTON CORP Filed by: GAMCO INVESTORS, INC. ET AL Jul 13, 2018 04:03PM
Form SC 13D/A SPARTON CORP Filed by: GAMCO INVESTORS, INC. ET AL May 25, 2018 05:14PM


Mar 9, 2018 04:01PM Form SC 13D SPARTON CORP Filed by: GAMCO INVESTORS, INC. ET AL