<SEC-DOCUMENT>0000899243-23-008858-index.html : 20230317
<SEC-HEADER>0000899243-23-008858.hdr.sgml : 20230317
<ACCEPTANCE-DATETIME>20230317160509
ACCESSION NUMBER:		0000899243-23-008858
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230316
FILED AS OF DATE:		20230317
DATE AS OF CHANGE:		20230317

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Morningside Venture Investments Ltd
		CENTRAL INDEX KEY:			0001543112
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41199
		FILM NUMBER:		23742507

	BUSINESS ADDRESS:	
		STREET 1:		MCCARTHY LEGAL SERVICES
		STREET 2:		1188 CENTRE STREET
		CITY:			NEWTON CENTRE
		STATE:			MA
		ZIP:			02459
		BUSINESS PHONE:		617-244-2800

	MAIL ADDRESS:	
		STREET 1:		MCCARTHY LEGAL SERVICES
		STREET 2:		1188 CENTRE STREET
		CITY:			NEWTON CENTRE
		STATE:			MA
		ZIP:			02459

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Amylyx Pharmaceuticals, Inc.
		CENTRAL INDEX KEY:			0001658551
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				464600503
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		43 THORNDIKE STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02141
		BUSINESS PHONE:		617-683-0917

	MAIL ADDRESS:	
		STREET 1:		43 THORNDIKE STREET
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02141
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
Document 1 - file: doc4.html

Document 1 - RAW XML: doc4.xml

</DOCUMENT>
</SEC-DOCUMENT>