SEC Filings
Filing date | Form | Description | Filer | View |
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4 | Statement of changes in beneficial ownership of securities |
Schwitter Frank J | View HTML | |
8-K | Report of unscheduled material events or corporate event |
View HTML EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA | ||
SC 13G/A | An amendment to the SC 13G filing |
View HTML | ||
8-K | Report of unscheduled material events or corporate event |
View HTML EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA | ||
10-Q | Quarterly report which provides a continuing view of a company's financial position |
View HTML
4.30.20 HEI Form 10Q.pdf 578.9 KB
EX-101.SCH - XBRL TAXONOMY EXTENSION SCHEMA
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SD | Specialized Disclosure Report |
View HTML | ||
4 | Statement of changes in beneficial ownership of securities |
Walker Steven M | View HTML | |
4 | Statement of changes in beneficial ownership of securities |
MENDELSON ERIC A | View HTML | |
4 | Statement of changes in beneficial ownership of securities |
MENDELSON VICTOR H | View HTML | |
4 | Statement of changes in beneficial ownership of securities |
MENDELSON LAURANS A | View HTML |
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