SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
X	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Mehra Anand (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol MARINUS PHARMACEUTICALS INC [ MRNS ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 10/20/2016
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/20/2016		S		724,788	D	$1.389	1,134,851	I	See footnote(1)
Common Stock	10/20/2016		S		13,367	D	$1.389	224,845	I	See footnote(2)
Common Stock	10/20/2016		S		12,528	D	$1.389	15,470	I	See footnote(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* Mehra Anand (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* SOFINNOVA VENTURE PARTNERS VI L P (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Sofinnova Venture Partners VI GmbH & Co. KG (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Sofinnova Venture Affiliates VI LP (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Sofinnova Management VI, L.L.C. (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Buatois Eric (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* HEALY JAMES (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Azan Alain (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* POWELL MICHAEL (Last) (First) (Middle) C/O SOFINNOVA VENTURES 3000 SAND HILL ROAD, 4-250 (Street) MENLO PARK CA 94025 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Shares are held by Sofinnova Venture Partners VI, L.P. ("SVP VI"). Sofinnova Management VI, L.L.C. ("SM VI") is the general partner of SVP VI and James I. Healy ("Healy"), Michael F. Powell ("Powell"), Alain L. Azan ("Azan") and Eric P. Buatois ("Buatois"), the managing members of SM VI, and Anand Mehra ("Mehra"), a former director of the Issuer, may be deemed to share voting and dispositive power over the shares held by such entities.

2. Shares are held by Sofinnova Venture Partners VI GmbH & Co. KG ("SVP KG"). SM VI is the managing limited partner of SVP KG, and Healy, Powell, Azan and Buatois, the managing members of SM VI, and Mehra, a former director of the Issuer, may be deemed to share voting and dispositive power over the shares held by such entities.

3. Shares are held by Sofinnova Venture Affiliates VI, L.P. ("SVA VI"). SM VI is the general partner of SVA VI, and Healy, Powell, Azan and Buatois, the managing members of SM VI, and Mehra, a former director of the Issuer, may be deemed to share voting and dispositive power over the shares held by such entities.

	/s/ Nathalie Auber, attorney-in-fact for Anand Mehra	10/24/2016
	/s/ Nathalie Auber, Attorney-in-Fact for Sofinnova Venture Partners VI, L.P.	10/24/2016
	/s/ Nathalie Auber, Attorney-in-Fact for Sofinnova Venture Partners VI GmbH & Co. KG	10/24/2016
	/s/ Nathalie Auber, Attorney-in-Fact for Sofinnova Venture Affiliates VI, L.P.	10/24/2016
	/s/ Nathalie Auber, Attorney-in-Fact for Sofinnova Management VI, L.L.C.	10/24/2016
	/s/ Nathalie Auber, Attorney-in-Fact for Alain Azan	10/24/2016
	/s/ Nathalie Auber, Attorney-in-Fact for Eric Buatois	10/24/2016
	/s/ Nathalie Auber, Attorney-in-Fact for James Healy	10/24/2016
	/s/ Nathalie Auber, Attorney-in-Fact for Michael Powell	10/24/2016
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.