<SEC-DOCUMENT>0000834237-21-006855-index.html : 20210202
<SEC-HEADER>0000834237-21-006855.hdr.sgml : 20210202
<ACCEPTANCE-DATETIME>20210202145631
ACCESSION NUMBER:		0000834237-21-006855
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210202
DATE AS OF CHANGE:		20210202

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARINUS PHARMACEUTICALS INC
		CENTRAL INDEX KEY:			0001267813
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-88269
		FILM NUMBER:		21580598

	BUSINESS ADDRESS:	
		STREET 1:		5 RADNOR CORPORATE CENTER SUITE 500
		STREET 2:		100 MATSONFORD RD
		CITY:			RADNOR
		STATE:			PA
		ZIP:			19087
		BUSINESS PHONE:		484-801-4670

	MAIL ADDRESS:	
		STREET 1:		5 RADNOR CORPORATE CENTER SUITE 500
		STREET 2:		100 MATSONFORD RD
		CITY:			RADNOR
		STATE:			PA
		ZIP:			19087

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BlackRock Inc.
		CENTRAL INDEX KEY:			0001364742
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		IRS NUMBER:				320174431
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		55 EAST 52ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10055
		BUSINESS PHONE:		212-810-5300

	MAIL ADDRESS:	
		STREET 1:		55 EAST 52ND STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10055

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	BlackRock, Inc.
		DATE OF NAME CHANGE:	20060929

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	New BlackRock, Inc.
		DATE OF NAME CHANGE:	20060601
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>us56854q2003_020221.txt
<TEXT>
Document 1 - file: us56854q2003_020221.txt

</DOCUMENT>
</SEC-DOCUMENT>