13D
13D 13DRequired SEC filing by 5% or more shareholder. The filing is often used by activist investors. A passive investor may file the shorter 13G.
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Form SC 13D/A INSIGNIA SYSTEMS INC/MN Filed by: AIR T INC
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Form SC 13D/A INSIGNIA SYSTEMS INC/MN Filed by: Cable Car Capital LLC
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Form SC 13D/A INSIGNIA SYSTEMS INC/MN Filed by: AIR T INC
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Form SC 13D/A INSIGNIA SYSTEMS INC/MN Filed by: BIGLARI CAPITAL CORP.
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Form SC 13D/A INSIGNIA SYSTEMS INC/MN Filed by: AIR T INC
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Form SC 13D/A INSIGNIA SYSTEMS INC/MN Filed by: PESSIN NORMAN H
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