$HLGN SEC Filings

Filing Filed On
PRIMARY DOCUMENT 05 May 2023
CURRENT REPORT 24 Apr 2023
UPLOAD 20 Apr 2023
NYSE CERTIFICATION 20 Apr 2023
FORM 4 SUBMISSION 17 Apr 2023
FOR REGISTRATION OF CERTAIN CLASSES 17 Apr 2023
CURRENT REPORT 17 Apr 2023
PRIMARY DOCUMENT 14 Apr 2023
PRIMARY DOCUMENT 14 Apr 2023
CURRENT REPORT 14 Apr 2023
SC 13D/A 13 Apr 2023
AMENDMENT NO. 3 13 Apr 2023
FORM 4 SUBMISSION 12 Apr 2023
FORM 4 SUBMISSION 10 Apr 2023
REGISTRATION STATEMENT 06 Apr 2023
PROSPECTUS 06 Apr 2023
EFFECT 05 Apr 2023
REGISTRATION STATEMENT 30 Mar 2023
10-K 29 Mar 2023
AMENDMENT NO. 2 28 Mar 2023