SCHEDULE 13G/A

MARINUS PHARMACEUTICALS INC

Common Stock, par value $0.001 per share · CUSIP: 56854Q200

Event date: 2024-12-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• TANG CAPITAL MANAGEMENT, LLC

  Shares: 1,641,945.00 · Class: 3.0%

• KEVIN TANG

  Shares: 1,641,945.00 · Class: 3.0%

• TANG CAPITAL PARTNERS, LP

  Shares: 1,341,945.00 · Class: 2.4%

• TANG CAPITAL PARTNERS III, INC

  Shares: 300,000.00 · Class: 0.6%

• TANG CAPITAL PARTNERS IV, INC

  Shares: 0.00 · Class: 0.0%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.