McMullen William Wallace 4

What Happened

• William W. McMullen, a director of Mach Natural Resources GP LLC and a reported 10% owner, made open‑market purchases of common units in MACH Natural Resources LP (MNR) through affiliated entities. Transactions: 3,570 units @ $14.00 on 2026-03-19 ($49,980); 2,500 units @ $14.00 on 2026-03-20 ($35,000); and 3,215 units @ $13.63 on 2026-03-23 ($43,820). Total acquired: 9,285 units for $128,800 (approx). These are purchases (a buyer signal rather than sales).

Key Details

• Transaction dates/prices: 2026-03-19 (3,570 @ $14.00), 2026-03-20 (2,500 @ $14.00), 2026-03-23 (3,215 @ $13.63); some prices reported as weighted averages (ranges $13.99–$14.00 and $13.535–$13.65 per footnotes).
• Purchaser: The units were purchased by Bayou City Energy Management LLC (BCEM) per filing footnotes.
• Holdings after transactions: the filing reports 74,835,939 units directly held by BCE Mach Aggregator LLC and 23,978 units held by BCEM; BCE Aggregator is indirectly managed by BCEM and McMullen is BCEM’s Managing Partner. The filing states the reporting persons may be deemed to beneficially own those units but disclaim ownership except for pecuniary interest.
• Filing date and timeliness: Form 4 was filed on 2026-03-23 reporting transactions from 2026-03-19 through 2026-03-23; the filing itself does not flag a late report.

Context

• These were straightforward open‑market purchases by affiliated investment vehicles (BCEM/BCE Aggregator). For retail investors, purchases by insiders or their affiliated investment managers can be interpreted as a more informative signal than routine sales, but the filing disclaims direct beneficial ownership except to the extent of pecuniary interest. No options, awards, gifts, or tax‑withholding events are involved in this filing.