SCHEDULE 13G

MARINUS PHARMACEUTICALS INC

Common Stock · CUSIP: 56854Q200

Event date: 2024-12-30

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

• Beryl Capital Management LLC

  Shares: 5,462,942.00 · Class: 9.9%

• Beryl Capital Management LP

  Shares: 5,462,942.00 · Class: 9.9%

• Beryl Capital Partners II LP

  Shares: 4,801,329.00 · Class: 8.7%

• David A. Witkin

  Shares: 5,462,942.00 · Class: 9.9%

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