Mach Natural Resources (MNR) director buys 2,000 common units

Rhea-AI Filing Summary

Mach Natural Resources LP director Christopher Burn reported open-market purchases of 2,000 Common Units. He bought 1,000 units at $14.07 on March 19, 2026 and 1,000 units at $13.85 on March 20, 2026, raising his direct holdings to 15,587 units. One reported price is a weighted average of multiple trades between $13.99 and $14.15.

Insights

Insider trading analyst

Director makes modest open-market net purchase of 2,000 units.

Christopher Burn, a director of Mach Natural Resources LP, executed two open-market purchases totaling 2,000 Common Units over consecutive days at prices around $14 per unit. These are straightforward buy transactions, not option exercises or tax-related moves.

After these trades, his direct holdings increased to 15,587 units, indicating a relatively small position change rather than a transformative move. One transaction price is disclosed as a weighted average for multiple trades between $13.99 and $14.15, a standard reporting approach for aggregated executions.

There are no derivative positions or sales reported in this filing, and no references to Rule 10b5-1 trading plans in the provided data. Overall, this looks like a routine, moderate-sized insider purchase that modestly increases the director’s direct exposure to the partnership’s common units.

Insider Trade Summary

Net Buyer: 2,000 shares ($27,920)

Net Buy 2 txns

Insider Burn Christopher

Role Director

Bought 2,000 shs ($28K)

Type	Security	Shares	Price	Value
Purchase	Common Units	1,000	$13.85	$14K
Purchase	Common Units	1,000	$14.07	$14K

Holdings After Transaction: Common Units — 15,587 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Burn Christopher

(Last) (First) (Middle)

14201 WIRELESS WAY

SUITE 300

(Street)

OKLAHOMA CITY OKLAHOMA 73134

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MACH NATURAL RESOURCES LP [ MNR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			See Remarks

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/19/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Units	03/19/2026		P		1,000	A	$14.07(1)	14,587	D
Common Units	03/20/2026		P		1,000	A	$13.85	15,587	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These common units were purchased by the Reporting Person in multiple transactions at prices ranging from $13.99 to $14.15, 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 (the "SEC"), upon request, full information regarding the number of common units purchased at each separate price within the ranges set forth in this footnote (1) to this Form 4.

Remarks:

The Reporting Person is a Director of Mach Natural Resources GP LLC, the general partner of the Issuer (the "General Partner"). The Issuer is managed by the directors and executive officers of the General Partner.

	By: /s/ Michael E. Reel, as attorney-in-fact for the Reporting Person	03/23/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Mach Natural Resources (MNR) disclose?

Mach Natural Resources LP disclosed that director Christopher Burn bought a total of 2,000 Common Units in open-market transactions. The purchases occurred over two days at prices around $14 per unit, modestly increasing his direct ownership stake in the partnership.

How many Mach Natural Resources units does Christopher Burn now hold?

Following the reported transactions, director Christopher Burn directly holds 15,587 Common Units of Mach Natural Resources LP. This total reflects the addition of 2,000 units purchased in two open-market trades on March 19 and March 20, 2026.

At what prices did the Mach Natural Resources director buy units?

Christopher Burn purchased 1,000 Common Units at $14.07 on March 19, 2026 and another 1,000 units at $13.85 on March 20, 2026. One reported price represents a weighted-average of multiple trades between $13.99 and $14.15.

Were these Mach Natural Resources insider transactions open-market buys?

Yes. Both transactions are coded as “P”, indicating open-market or private purchase, and described as open-market purchases of Common Units. There are no derivative exercises, gifts, or tax-withholding entries associated with these trades in the provided data.

Did the Mach Natural Resources director sell any units in this Form 4?

No sales are reported. The Form 4 shows two purchase transactions totaling 2,000 units and a net-buy share count of 2,000. The transaction summary lists zero sell transactions, indicating this filing reflects only buying activity by the reporting person.

Does the Form 4 show any Mach Natural Resources derivative positions?

The derivative section for this Form 4 is empty, and the derivativeTransactionCount is zero. That indicates no options, warrants, or other derivative securities were exercised, converted, or newly reported in connection with these insider purchases of Common Units.