<SEC-DOCUMENT>0001104659-15-005064-index.html : 20150128
<SEC-HEADER>0001104659-15-005064.hdr.sgml : 20150128
<ACCEPTANCE-DATETIME>20150128165722
ACCESSION NUMBER:		0001104659-15-005064
CONFORMED SUBMISSION TYPE:	S-1MEF
PUBLIC DOCUMENT COUNT:		4
<REFERENCE-462B>333-201276
FILED AS OF DATE:		20150128
DATE AS OF CHANGE:		20150128
EFFECTIVENESS DATE:		20150128

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Flex Pharma, Inc.
		CENTRAL INDEX KEY:			0001615219
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				465087339
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-1MEF
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-201739
		FILM NUMBER:		15555521

	BUSINESS ADDRESS:	
		STREET 1:		800 BOYLSTON STREET
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		617-874-1821

	MAIL ADDRESS:	
		STREET 1:		800 BOYLSTON STREET
		STREET 2:		24TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-1MEF
<SEQUENCE>1
<FILENAME>a14-23004_12s1mef.htm
<DESCRIPTION>S-1MEF
<TEXT>
Document 1 - file: a14-23004_12s1mef.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>a14-23004_12ex5d1.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: a14-23004_12ex5d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>a14-23004_12ex23d1.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: a14-23004_12ex23d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g2300412kei001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g2300412kei001.jpg

</DOCUMENT>
</SEC-DOCUMENT>