<SEC-DOCUMENT>0001193125-20-156664-index.html : 20200601 <SEC-HEADER>0001193125-20-156664.hdr.sgml : 20200601 <ACCEPTANCE-DATETIME>20200601090503 ACCESSION NUMBER: 0001193125-20-156664 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20200601 DATE AS OF CHANGE: 20200601 EFFECTIVENESS DATE: 20200601 FILER: COMPANY DATA: COMPANY CONFORMED NAME: BlackRock Health Sciences Trust CENTRAL INDEX KEY: 0001314966 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 333-230158 FILM NUMBER: 20931220 BUSINESS ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 BUSINESS PHONE: (888) 825-2257 MAIL ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 </SEC-HEADER> <DOCUMENT> <TYPE>497 <SEQUENCE>1 <FILENAME>d904225d497.htm <DESCRIPTION>BLACKROCK HEALTH SCIENCES TRUST <TEXT> Document 1 - file: d904225d497.htm
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