MNR

SEC source: 0001213900-24-091839 · ownership.xml · nonDerivative · entry 3

WARD TOM L. · CIK 0001038276 · Director · See Remarks · 10% owner · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,739,315

F3 · security: The issuer withheld units to satisfy the tax withholding obligations associated with the vesting of phantom units.

SEC source: 0001213900-24-091904 · ownership.xml · nonDerivative · entry 1

Giesinger Edgar R. JR. · CIK 0001658831 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,075

F1 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest on the first anniversary of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-24-091907 · ownership.xml · nonDerivative · entry 1

KEATING FRANK A · CIK 0001240029 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,075

F1 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest on the first anniversary of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-24-091838 · ownership.xml · nonDerivative · entry 1

WHITE KEVIN R. · CIK 0001341654 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 456,946

F1 · security: The issuer withheld units to satisfy the tax withholding obligations associated with the vesting of phantom units.

SEC source: 0001213900-24-091911 · ownership.xml · nonDerivative · entry 1

Perich Stephen C · CIK 0001995420 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,075

F1 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest on the first anniversary of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-24-091840 · ownership.xml · nonDerivative · entry 1

Reel Michael E · CIK 0001995408 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,658

F1 · security: The issuer withheld units to satisfy the tax withholding obligations associated with the vesting of phantom units.

SEC source: 0001213900-24-053025 · ownership.xml · nonDerivative · entry 1

WHITE KEVIN R. · CIK 0001341654 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 467,054

F1 · price: The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $18.50 to $19.23, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote (1) to this Form 4.

F2 · balance_after: Includes 68,755 phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest in three equal installments on each of the first three anniversaries of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-24-051729 · ownership.xml · nonDerivative · entry 1

Reel Michael E · CIK 0001995408 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,434

F1 · price: The price reported in Column 4 is a weighted average price. These common units were sold in multiple transactions at prices ranging from $19.25 to $19.88, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of common units sold at each separate price within the ranges set forth in this footnote (1) to this Form 4.

F2 · balance_after: Includes 18,309 phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest in three equal installments on each of the first three anniversaries of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-23-081832 · ownership.xml · nonDerivative · entry 3

WARD TOM L. · CIK 0001038276 · Director · See Remarks · 10% owner · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,750,037

F4 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest in three equal installments on each of the first three anniversaries of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-23-081832 · ownership.xml · nonDerivative · entry 2

WARD TOM L. · CIK 0001038276 · Director · See Remarks · 10% owner · See Remarks

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Mach Resources LLC

Disclosed balance after: 421,100

F1 · kind: On October 27, 2023, the Issuer used a portion of the net proceeds from the closing of its initial public offering ("IPO") of common units to purchase common units from certain of the Issuer's pre-IPO unitholders, including the Reporting Person, at a price of $17.67 per unit (such price per unit being the price that the Issuer received from the underwriters in the IPO, net of the underwriting discounts and commissions).

F3 · ownership.nature: The Reporting Person exercises control over Mach Resources LLC ("Mach Resources"). Mach Resources is owned 50.5% by Tom L. Ward through the Trust and 49.5% by WCT Resources LLC which is owned by certain trusts affiliated with Mr. Ward for which an employee of Mach Resources is trustee. By virtue of the relationship, the Reporting Person may be deemed to have or share beneficial ownership of the securities held of record by Mach Resources, but the Reporting Person disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

SEC source: 0001213900-23-081832 · ownership.xml · nonDerivative · entry 1

WARD TOM L. · CIK 0001038276 · Director · See Remarks · 10% owner · See Remarks

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Tom L. Ward 1992 Revocable Trust

Disclosed balance after: 13,218,411

F1 · kind: On October 27, 2023, the Issuer used a portion of the net proceeds from the closing of its initial public offering ("IPO") of common units to purchase common units from certain of the Issuer's pre-IPO unitholders, including the Reporting Person, at a price of $17.67 per unit (such price per unit being the price that the Issuer received from the underwriters in the IPO, net of the underwriting discounts and commissions).

F2 · ownership.nature: The Reporting Person is the Trustee of the Tom L. Ward 1992 Revocable Trust (the "Trust"). By virtue of the relationship, the Reporting Person may be deemed to have or share beneficial ownership of the securities held of record by the Trust, but the Reporting Person disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

SEC source: 0001213900-23-081831 · ownership.xml · nonDerivative · entry 1

McMullen William Wallace · CIK 0001730172 · Director · 10% owner · See Remarks

BCE-Mach Aggregator LLC · CIK 0001997530 · 10% owner

BAYOU CITY ENERGY MANAGEMENT LLC · CIK 0001742941 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by BCE-Mach Aggregator LLC

Disclosed balance after: 68,226,633

F1 · kind: On October 27, 2023, the Issuer used a portion of the net proceeds from the closing of its initial public offering ("IPO") of common units to purchase common units from certain of the Issuer's pre-IPO unitholders, including the Reporting Person, at a price of $17.67 per unit (such price per unit being the price that the Issuer received from the underwriters in the IPO, net of the underwriting discounts and commissions).

F2 · ownership.nature: BCE-Mach Aggregator LLC is indirectly managed by Bayou City Energy Management LLC ("BCEM"). William W. McMullen is the Managing Partner of BCEM. Each of BCEM and Mr. McMullen (by virtue of his relationship with BCEM) may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the common units which BCE-Mach Aggregator LLC beneficially owns. Mr. McMullen disclaims beneficial ownership of such common units except to the extent of his pecuniary interest therein.

SEC source: 0001213900-23-081840 · ownership.xml · nonDerivative · entry 1

Giesinger Edgar R. JR. · CIK 0001658831 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,895

F1 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest in three equal installments on each of the first three anniversaries of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-23-081837 · ownership.xml · nonDerivative · entry 1

KEATING FRANK A · CIK 0001240029 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,895

F1 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest in three equal installments on each of the first three anniversaries of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-23-081836 · ownership.xml · nonDerivative · entry 2

WHITE KEVIN R. · CIK 0001341654 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 767,054

F2 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest in three equal installments on each of the first three anniversaries of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-23-081836 · ownership.xml · nonDerivative · entry 1

WHITE KEVIN R. · CIK 0001341654 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 698,299

F1 · kind: On October 27, 2023, the Issuer used a portion of the net proceeds from the closing of its initial public offering ("IPO") of common units to purchase common units from certain of the Issuer's pre-IPO unitholders, including the Reporting Person, at a price of $17.67 per unit (such price per unit being the price that the Issuer received from the underwriters in the IPO, net of the underwriting discounts and commissions).

SEC source: 0001213900-23-081835 · ownership.xml · nonDerivative · entry 2

Reineke Daniel T Jr. · CIK 0001995355 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 767,054

F2 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest in three equal installments on each of the first three anniversaries of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-23-081835 · ownership.xml · nonDerivative · entry 1

Reineke Daniel T Jr. · CIK 0001995355 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 698,299

F1 · kind: On October 27, 2023, the Issuer used a portion of the net proceeds from the closing of its initial public offering ("IPO") of common units to purchase common units from certain of the Issuer's pre-IPO unitholders, including the Reporting Person, at a price of $17.67 per unit (such price per unit being the price that the Issuer received from the underwriters in the IPO, net of the underwriting discounts and commissions).

SEC source: 0001213900-23-081833 · ownership.xml · nonDerivative · entry 2

Reel Michael E · CIK 0001995408 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,434

F2 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest in three equal installments on each of the first three anniversaries of the grant date, subject in each case to the continued service through such dates.

SEC source: 0001213900-23-081833 · ownership.xml · nonDerivative · entry 1

Reel Michael E · CIK 0001995408 · See Remarks · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 138,125

F1 · kind: On October 27, 2023, the Issuer used a portion of the net proceeds from the closing of its initial public offering ("IPO") of common units to purchase common units from certain of the Issuer's pre-IPO unitholders, including the Reporting Person, at a price of $17.67 per unit (such price per unit being the price that the Issuer received from the underwriters in the IPO, net of the underwriting discounts and commissions).

SEC source: 0001213900-23-081830 · ownership.xml · nonDerivative · entry 1

Perich Stephen C · CIK 0001995420 · Director · See Remarks

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,895

F1 · shares: The reported securities represent phantom units. Each phantom unit represents the contingent right to receive one common unit of the Issuer upon vesting. The phantom units will vest in three equal installments on each of the first three anniversaries of the grant date, subject in each case to the continued service through such dates.