0000904454-20-000638.txt : 20200929 0000904454-20-000638.hdr.sgml : 20200929 20200929164954 ACCESSION NUMBER: 0000904454-20-000638 CONFORMED SUBMISSION TYPE: SC 13D/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20200929 DATE AS OF CHANGE: 20200929 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 13D/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-88269 FILM NUMBER: 201209470 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: Domain Partners VI, L.P. CENTRAL INDEX KEY: 0001298033 IRS NUMBER: 331073839 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13D/A BUSINESS ADDRESS: STREET 1: ONE PALMER SQUARE CITY: PRINCETON STATE: NJ ZIP: 08542 BUSINESS PHONE: (609) 683-5656 MAIL ADDRESS: STREET 1: ONE PALMER SQUARE CITY: PRINCETON STATE: NJ ZIP: 08542 SC 13D/A 1 s13da_092820-marinus.htm SCHEDULE 13D/A
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC  20549
 
SCHEDULE 13D
(Rule 13d-101)
 
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)1
 
Marinus Pharmaceuticals, Inc.
(Name of Issuer)
Common Stock, $.001 par value
(Title of Class of Securities)
56854Q200
(CUSIP Number)
Domain Associates, LLC
Ropes & Gray LLP
202 Carnegie Center Drive
1211 Avenue of the Americas
Princeton, NJ  08540
New York, NY 10036
Attn: Lisa A. Kraeutler
Attn: Morri H. Weinberg, Esq.
Tel: (609) 683-5656
Tel: (212) 596-9000
(Name, Address and Telephone Number of PersonAuthorized to Receive Notices and Communications)
Not Applicable (See Introductory Note)
(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box.   [   ]
Note.  Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits.  See Rule 13d-7 for other parties to whom copies are to be sent.



1 The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.
 
The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).




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CUSIP No. 56854Q200


1.
NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (VOLUNTARY)
 
Domain Partners VI, L.P.
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)  [X]
(b)  [   ]
3.
SEC USE ONLY


  
4.
SOURCE OF FUNDS
Not Applicable
5.
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS  REQUIRED PURSUANT TO ITEM 2(d) or 2(e)
[   ]
6.
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
NUMBER OF SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING
PERSON WITH
7.
SOLE VOTING POWER
619,221
8.
SHARED VOTING POWER
0
9.
SOLE DISPOSITIVE POWER
619,221
10.
SHARED DISPOSITIVE POWER
0
11.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
619,221
12.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES  [   ]

  
13.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
2.0%
14.
TYPE OF REPORTING PERSON
PN







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CUSIP No. 56854Q200


1.
NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (VOLUNTARY)
 
DP VI Associates, L.P.
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)  [X]
(b)  [   ]
3.
SEC USE ONLY


  
4.
SOURCE OF FUNDS
Not Applicable
5.
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)
[   ]
6.
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
NUMBER OF SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING
PERSON WITH
7.
SOLE VOTING POWER
4,250
8.
SHARED VOTING POWER
0
9.
SOLE DISPOSITIVE POWER
4,250
10.
SHARED DISPOSITIVE POWER
0
11.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
4,250
12.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
CERTAIN SHARES  [   ]
13.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 0.1%
14.
TYPE OF REPORTING PERSON
PN







3



CUSIP No. 56854Q200


1.
NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (VOLUNTARY)
 
Domain Associates, LLC
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a)  [X]
(b)  [   ]
3.
SEC USE ONLY


  
4.
SOURCE OF FUNDS
Not Applicable
5.
CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e)
[   ]
6.
CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware
NUMBER OF SHARES
BENEFICIALLY
OWNED BY EACH
REPORTING
PERSON WITH
7.
SOLE VOTING POWER
11,612
8.
SHARED VOTING POWER
0
9.
SOLE DISPOSITIVE POWER
11,612
10.
SHARED DISPOSITIVE POWER
0
11.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11,612
12.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES  [   ]

  
13.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
Less than 0.1%
14.
TYPE OF REPORTING PERSON
OO







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CUSIP No. 56854Q200


AMENDMENT NO. 1 TO SCHEDULE 13D (FINAL AMENDMENT)
Introductory Note:  Reference is hereby made to the statement on Schedule 13D filed with the Securities and Exchange Commission by the Reporting Persons with respect to the Common Stock of the Issuer on August 15, 2014 (the “Schedule 13D”).  Terms defined in the Schedule 13D are used herein as so defined.  This Final Amendment to the Schedule 13D is being filed solely to report that the Reporting Persons are no longer subject to reporting on Schedule 13D with respect to the Issuer.  The Reporting Persons have not engaged in any transactions with respect to the securities of the Issuer since the original filing of the Schedule 13D, but have ceased to beneficially own more than five percent of the Common Stock due to the increase in the total number of shares of Common Stock outstanding.
The Schedule 13D is hereby amended as follows:
Item 1.  Security and Issuer.
The principal executive office of the Issuer is located at 5 Radnor Corporate Center, Suite 500, 100 Matsonford Road, Radnor, PA  19087.
Item 2.  Identity and Background.
(b)-(c)  James C. Blair, Brian H. Dovey, Jesse I. Treu and Nicole Vitullo are the managing members of OPSA VI.
James C. Blair, Brian H. Dovey, Jesse I. Treu, Brian K. Halak, Nicole Vitullo and Kim P. Kamdar are the managing members of DA.
The principal business address of each of the entities and individuals named in Item 2 is c/o Domain Associates, LLC, 202 Carnegie Center Drive, Princeton, New Jersey  08540.
Item 5.  Interest in Securities of the Issuer.
(a)  The information requested by this paragraph is incorporated by reference to the cover pages to this Amendment No. 1 (Final Amendment) to Schedule 13D  and is based on 30,570,065 shares of Common Stock outstanding after the effectiveness on September 22, 2020 of the Issuer's one-for-four reverse stock split, as provided to the Reporting Persons by the Issuer.
(e)  The Reporting Persons do not beneficially own more than five percent of the Common Stock.






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CUSIP No. 56854Q200

SIGNATURE
After reasonable inquiry and to the best of their knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct.
Dated:  September 29, 2020

 
DOMAIN PARTNERS VI, L.P.

  
 
By:
One Palmer Square Associates VI, LLC, General Partner

  
 
By:
/s/ Lisa A. Kraeutler
  
   
Attorney-in-Fact


  
 
DP VI ASSOCIATES, L.P.

  
 
By:
One Palmer Square Associates VI, LLC, General Partner

  
 
By:
/s/ Lisa A. Kraeutler
  
   
Attorney-in-Fact


  
 
DOMAIN ASSOCIATES, LLC
 
  
 
By:
/s/ Lisa A. Kraeutler
  
   
Attorney-in-Fact


  






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