Failure to Satisfy Listing Rule Form 8 K

Item 3.01. Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard;

Transfer of Listing.

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On December 6, 2024, Marinus Pharmaceuticals, Inc. (the "Company") received written notice (the "Bid Price Deficiency Notice") from The Nasdaq Stock Market, LLC ("Nasdaq") notifying the Company that for the previous 30 consecutive business days, the bid price for the Company's common stock, par value $0.001 (the "Common Stock"), had closed below the $1.00 per share minimum bid price requirement for continued listing on The Nasdaq Global Market, as set forth in Nasdaq Listing Rule 5450(a)(1) (the "Minimum Bid Price Requirement"). The Bid Price Deficiency Notice has no effect at this time on the listing of the Common Stock, which continues to trade on The Nasdaq Global Market under the symbol "MRNS".

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In accordance with Nasdaq Listing Rule 5810(c)(3)(A), the Company has a period of 180 calendar days, or until June 4, 2025 (the "Bid Price Compliance Date"), to regain compliance with the Minimum Bid Price Requirement. To regain compliance with the Minimum Bid Price Requirement, the closing bid price of the Common Stock must be at least $1.00 per share for a minimum of 10 consecutive business days during the 180-day compliance period.

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If the Company does not regain compliance with the Minimum Bid Price Requirement by the Bid Price Compliance Date, the Company may be eligible for a second 180 calendar day compliance period. To qualify for this additional compliance period, the Company must submit an application to transfer to The Nasdaq Capital Market (the "Capital Market"), provided that it meets the market value of publicly held shares requirement for continued listing on the Capital Market and all other applicable requirements for initial listing on the Capital Market, other than the Capital Market's bid price requirement. The Company would also need to pay an application fee and provide written notice to Nasdaq of its intention to cure the deficiency during the additional compliance period. As part of its review process to determine whether the additional compliance period is afforded to the Company, Nasdaq will make a determination of whether it believes the Company will be able to cure this deficiency. If the Company does not regain compliance within the allotted compliance period(s), including any extensions that may be granted by Nasdaq, Nasdaq will provide notice that the Common Stock will be subject to delisting. At such time, the Company may appeal the delisting determination to a Nasdaq hearing panel.

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Also on December 6, 2024, the Company received written notice (the "Market Value of Listed Securities Deficiency Notice") from Nasdaq notifying the Company that for the previous 30 consecutive business days, the market value of the Common Stock remained below the $50.0 million minimum market value of listed securities requirement for continued listing on The Nasdaq Global Market, as set forth in Nasdaq Listing Rule 5450(b)(2)(A)(the "MVLSRequirement"). The Market Value of Listed Securities Deficiency Notice has no effect at this time on the listing of the Common Stock, which continues to trade on The Nasdaq Global Market under the symbol "MRNS".

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In accordance with Nasdaq Listing Rule 5810(c)(3)(C), the Company has a period of 180 calendar days, or until June 4, 2025 (the "MVLS Compliance Date"), to regain compliance with the MVLSRequirement. To regain compliance with the MVLSRequirement, the market value of the Common Stock must close at $50.0 million or more for a minimum of 10 consecutive business days during the 180-day compliance period.

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If the Company does not regain compliance with the MVLSRequirement by the MVLSCompliance Date, including any extensions that may be granted by Nasdaq, Nasdaq will provide notice that the Common Stock will be subject to delisting. At such time, the Company may appeal the delisting determination to a Nasdaq hearing panel. Alternatively, the Company may submit an application and pay the related fee to transfer to the Capital Market to take advantage of the Capital Market's listing requirements, provided that it then satisfies the applicable requirements for continued listing on the Capital Market.

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The Company intends to actively monitor the minimum bid price and the market value of the Common Stock and may, if appropriate, consider implementing available options to regain compliance with the Minimum Bid Price Requirement and the MVLS Requirement.

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There can be no assurance that the Company will be able to regain compliance with the Minimum Bid Price Requirement, the MVLSRequirement or maintain compliance with any other listing requirements.

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS:

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This Current Report on Form 8-K contains forward-looking statements, including, but not limited to, statements regarding the Company's ability to regain compliance with the Minimum Bid Price Requirement and the MVLS Requirement, the Company's intentions to actively monitor the minimum bid price and the market value of the Common Stock, actions to be taken by Nasdaq, and the Company's plans to consider implementing available options to regain compliance with the Minimum Bid Price Requirement and the MVLS Requirement. The Company's actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of these risks and uncertainties, including the risk that the Company may not meet the Minimum Bid Price Requirement or the MVLS Requirement during any compliance period or in the future, the risk that the Company may not otherwise meet the requirements for continued listing under the Nasdaq Listing Rules, the risk that Nasdaq may not grant the Company relief from delisting if necessary, the risk that the Company may not ultimately meet applicable Nasdaq requirements if any such relief is necessary, among other risks and uncertainties. A further description of the risks and uncertainties relating to the business of the Company is contained in the Company's most recent annual report on Form 10-K and the Company's quarterly reports on Form 10-Q, as well as any amendments thereto reflected in subsequent filings with the United States Securities and Exchange Commission. The Company undertakes no duty or obligation to update any forward-looking statements contained in this report as a result of new information, future events or changes in its expectations.

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