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Jan 26, 2021 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Feb 19, 2021 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Apr 30, 2021 4 Statement of changes in beneficial ownership of securities htmlhtml   pdfpdf  
Dec 31, 2014 4/A Statement of changes in beneficial ownership of securities (Amendment) htmlhtml   pdfpdf  
Apr 26, 2019 4/A Statement of changes in beneficial ownership of securities (Amendment) htmlhtml   pdfpdf  
May 21, 2019 4/A Statement of changes in beneficial ownership of securities (Amendment) htmlhtml   pdfpdf