<SEC-DOCUMENT>0001104659-20-132297-index.html : 20201204 <SEC-HEADER>0001104659-20-132297.hdr.sgml : 20201204 <ACCEPTANCE-DATETIME>20201204121630 ACCESSION NUMBER: 0001104659-20-132297 CONFORMED SUBMISSION TYPE: N-CSR PUBLIC DOCUMENT COUNT: 16 CONFORMED PERIOD OF REPORT: 20200930 FILED AS OF DATE: 20201204 DATE AS OF CHANGE: 20201204 EFFECTIVENESS DATE: 20201204 FILER: COMPANY DATA: COMPANY CONFORMED NAME: TEKLA LIFE SCIENCES INVESTORS CENTRAL INDEX KEY: 0000884121 IRS NUMBER: 043147016 STATE OF INCORPORATION: MA FISCAL YEAR END: 0930 FILING VALUES: FORM TYPE: N-CSR SEC ACT: 1940 Act SEC FILE NUMBER: 811-06565 FILM NUMBER: 201369298 BUSINESS ADDRESS: STREET 1: 100 FEDERAL STREET STREET 2: 19TH FLOOR CITY: BOSTON STATE: MA ZIP: 02110 BUSINESS PHONE: 6177728515 MAIL ADDRESS: STREET 1: 100 FEDERAL STREET STREET 2: 19TH FLOOR CITY: BOSTON STATE: MA ZIP: 02110 FORMER COMPANY: FORMER CONFORMED NAME: H&Q LIFE SCIENCES INVESTORS DATE OF NAME CHANGE: 19920929 </SEC-HEADER> <DOCUMENT> <TYPE>N-CSR <SEQUENCE>1 <FILENAME>tm2030671d1_ncsr.htm <DESCRIPTION>N-CSR <TEXT> Document 1 - file: tm2030671d1_ncsr.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CODEETH <SEQUENCE>2 <FILENAME>tm2030671d1_ex99codeeth.htm <DESCRIPTION>EXHIBIT 99.CODEETH <TEXT> Document 2 - file: tm2030671d1_ex99codeeth.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.CERT <SEQUENCE>3 <FILENAME>tm2030671d1_ex99cert.htm <DESCRIPTION>EXHIBIT 99.CERT <TEXT> Document 3 - file: tm2030671d1_ex99cert.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.SECTION 19(A) <SEQUENCE>4 <FILENAME>tm2030671d1_ex99section19a.htm <DESCRIPTION>EXHIBIT 99.SECTION19(A) <TEXT> Document 4 - file: tm2030671d1_ex99section19a.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.906CERT <SEQUENCE>5 <FILENAME>tm2030671d1_ex99-906cert.htm <DESCRIPTION>EXHIBIT 99.906 CERT <TEXT> Document 5 - file: tm2030671d1_ex99-906cert.htm
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