<SEC-DOCUMENT>0001104659-21-021299-index.html : 20210212
<SEC-HEADER>0001104659-21-021299.hdr.sgml : 20210212
<ACCEPTANCE-DATETIME>20210212085500
ACCESSION NUMBER:		0001104659-21-021299
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210209
FILED AS OF DATE:		20210212
DATE AS OF CHANGE:		20210212

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			LAWLOR AUGUSTINE
		CENTRAL INDEX KEY:			0001262327

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37990
		FILM NUMBER:		21623155

	MAIL ADDRESS:	
		STREET 1:		55 CAMBRIDGE PARKWAY
		STREET 2:		SUITE 301
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LEAP THERAPEUTICS, INC.
		CENTRAL INDEX KEY:			0001509745
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				274412575
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		47 THORNDIKE STREET
		STREET 2:		SUITE B1-1
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
		BUSINESS PHONE:		617 252 4343

	MAIL ADDRESS:	
		STREET 1:		47 THORNDIKE STREET
		STREET 2:		SUITE B1-1
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Dekkun Corp
		DATE OF NAME CHANGE:	20110107
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
<FILENAME>tm216410-5_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
Document 1 - file: tm216410-5_4seq1.html

Document 1 - RAW XML: tm216410-5_4seq1.xml

</DOCUMENT>
</SEC-DOCUMENT>