Scott Braunstein - 27 Mar 2024 Form 4 Insider Report for MARINUS PHARMACEUTICALS, INC.

Role: CHAIRMAN AND CEO, Director
Signature: /s/ Debra A. Mohollen, Attorney-in-Fact
Issuer symbol: N/A
Transactions as of: 27 Mar 2024
Net transactions value: +$214,000
Form type: 4
Filing time: 27 Mar 2024, 11:55:23 UTC
Previous filing: 22 Feb 2024
Next filing: 04 Jun 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MRNS	Common Stock	Options Exercise	$214,000	+50,000	+22%	$4.28	273,512	27 Mar 2024	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MRNS	Stock Option (Right to Buy)	Options Exercise	$0	-50,000	-20%	$0.000000	200,000	27 Mar 2024	Common Stock	50,000	$4.28	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The option, representing a right to purchase a total of 250,000 shares of common stock, vested and became exercisable in 48 substantially equal monthly installments beginning on September 6, 2019.