<SEC-DOCUMENT>0001193125-22-255483-index.html : 20220930
<SEC-HEADER>0001193125-22-255483.hdr.sgml : 20220930
<ACCEPTANCE-DATETIME>20220930160553
ACCESSION NUMBER:		0001193125-22-255483
CONFORMED SUBMISSION TYPE:	SC 13D/A
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20220930
DATE AS OF CHANGE:		20220930
GROUP MEMBERS:		CHENG YEE WING BETTY
GROUP MEMBERS:		CHEUNG KA HO
GROUP MEMBERS:		FRANCES ANNE ELIZABETH RICHARD
GROUP MEMBERS:		JILL MARIE FRANKLIN
GROUP MEMBERS:		MVIL, LLC
GROUP MEMBERS:		PETER STUART ALLENBY EDWARDS
GROUP MEMBERS:		WONG SEE WAI

SUBJECT COMPANY:	

	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

	FILING VALUES:
		FORM TYPE:		SC 13D/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-93265
		FILM NUMBER:		221284070

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Morningside Venture Investments Ltd
		CENTRAL INDEX KEY:			0001543112
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D/A

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D/A
<SEQUENCE>1
<FILENAME>d380027dsc13da.htm
<DESCRIPTION>SC 13D/A
<TEXT>
Document 1 - file: d380027dsc13da.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>d380027dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: d380027dex991.htm

</DOCUMENT>
</SEC-DOCUMENT>