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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1267813	Marinus Pharmaceuticals Inc	MRNS	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1196863	Nicole Vitullo	C/O Domain Associates, Llc 202 Carnegie Center, Suite 104 Princeton NJ 08540		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2021-03-12	619,221	$0.00	0	No	4	J	Indirect	By Domain Partners VI, L.P.
Common Stock	Acquisiton	2021-03-12	6,192	$0.00	6,192	No	4	J	Indirect	By One Palmer Square Associates VI, LLC
Common Stock	Disposition	2021-03-15	4,250	$15.87	0	No	4	S	Indirect	By DP VI Associates, L.P.
Common Stock	Disposition	2021-03-16	6,192	$0.00	0	No	4	J	Indirect	By One Palmer Square Associates VI, LLC
Common Stock	Disposition	2021-03-16	11,612	$0.00	0	No	4	J	Indirect	By Domain Associates, LLC
Common Stock	Acquisiton	2021-03-16	2,717	$0.00	3,692	No	4	J	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	J	Indirect	By Domain Partners VI, L.P.
No	4	J	Indirect	By One Palmer Square Associates VI, LLC
No	4	S	Indirect	By DP VI Associates, L.P.
No	4	J	Indirect	By One Palmer Square Associates VI, LLC
No	4	J	Indirect	By Domain Associates, LLC
No	4	J	Direct

Footnotes

Distribution of shares by Domain Partners VI, L.P. pro rata to its partners.
The Reporting Person is a managing member of One Palmer Square Associates VI, LLC, the sole general partner of Domain Partners VI, L.P. and DP VI Associates, L.P., and of Domain Associates, LLC. Pursuant to Instruction 4(b)(iv) of Form 4, the Reporting Person has elected to report as indirectly beneficially owned the entire number of securities owned by each such entity, however she disclaims beneficial ownership of any securities, and any proceeds thereof, that exceed her pecuniary interest therein and/or that are not actually distributed to her.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.61 to $16.25. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
Distribution of shares by One Palmer Square Associates VI, L.P. pro rata to its partners.
Distribution of shares by Domain Associates, LLC pro rata to its members.