SCHEDULE 13G

MACH NATURAL RESOURCES LP

Common units representing limited partner interests · CUSIP: 55445L100

Event date: 2025-09-16

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

• IKAV General Partner s.a r.l.

  Shares: 30,611,264.00 · Class: 18.2%

• VEPU Inc.

  Shares: 25,407,349.00 · Class: 15.1%

• IDI Investment s.a r.l.

  Shares: 25,407,349.00 · Class: 15.1%

• IKAV SICAV-FIS SCA

  Shares: 30,611,264.00 · Class: 18.2%

• SIMLOG Inc.

  Shares: 5,203,915.00 · Class: 3.1%

• Simlog S.a r.l.

  Shares: 5,203,915.00 · Class: 3.1%

• Institut fur Kapitalanlagen und Vesicherungslosungen GmbH

  Shares: 30,611,264.00 · Class: 18.2%

• Constantin von Wasserschleben

  Shares: 30,611,264.00 · Class: 18.2%

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