[Form 4] Matador Resources Co Insider Trading Activity

Rhea-AI Filing Summary

Christopher P. Calvert, Executive Vice President and Chief Operating Officer of Matador Resources Co (MTDR), reported a Section 16 transaction dated 09/12/2025. The filing shows a purchase of 1,000 shares of Matador common stock at $47.77 per share. The form lists 37,500 shares held of record in the reporting person’s 401(k) account as indirect beneficial ownership and separately notes 85,576 shares with footnotes explaining components: Employee Stock Purchase Plan shares and restricted stock awards that vest on specified anniversaries in 2023 and 2024 grants. The Form 4 was signed on 09/15/2025 by attorney-in-fact.

Positive

• Insider purchase of 1,000 shares at $47.77 indicates management acquisition rather than disposition
• Clear disclosure of indirect holdings and restricted stock vesting schedules improves transparency

Negative

• None.

Insights

Securities Analyst

TL;DR: Routine Section 16 filing showing a small open-market purchase by a senior executive; no material corporate change disclosed.

The filing documents a 1,000-share purchase at $47.77 by EVP and COO Christopher Calvert on 09/12/2025. Reported beneficial ownership lines include 37,500 shares held in a 401(k) account and 85,576 shares aggregated with explanatory footnotes describing ESPP and restricted stock awards with staged vesting. This is a transactional disclosure under Section 16 and does not present new operational, financial, or governance developments beyond insider holding details.

Corporate Governance Expert

TL;DR: Disclosure is standard insider reporting; it clarifies ownership mix and vesting schedules but shows no governance actions.

The Form 4 cleanly reports an acquisition and the composition of the reporting person’s holdings, including shares from the issuer’s Employee Stock Purchase Plan and restricted stock grants with defined vesting dates. The filing was properly executed through an attorney-in-fact. From a governance perspective this is routine compliance and does not indicate leadership changes, related-party transactions, or policy shifts.

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
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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^*

Calvert Christopher P

(Last) (First) (Middle)

5400 LBJ FREEWAY

SUITE 1500

(Street)

DALLAS TX 75240

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Matador Resources Co [ MTDR ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP and COO

3. Date of Earliest Transaction (Month/Day/Year)
09/12/2025

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

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

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

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 Stock	09/12/2025		P		1,000	A	$47.77	37,500	I	Represents shares held of record by the reporting person's 401(k) account
Common Stock								85,576(1)(2)(3)	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. Includes shares acquired pursuant to the Issuer's Employee Stock Purchase Plan. Such acquisitions are exempt under Rule 16b-3.

2. Includes 2,667 shares of restricted stock granted to the reporting person on February 16, 2023 that vest on the third anniversary of the date of grant.

3. Includes 6,667 shares of restricted stock granted to the reporting person on February 14, 2024 that vest in equal annual installments on the second and third anniversaries of the date of grant.

Remarks:

	/s/ Christopher P. Calvert, by Cale L. Curtin as attorney-in-fact	09/15/2025
	** 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.

FAQ

What transaction did MTDR executive Christopher Calvert report on Form 4?

The Form 4 reports a purchase of 1,000 shares of Matador Resources common stock on 09/12/2025 at a price of $47.77 per share.

How many Matador (MTDR) shares does Christopher Calvert beneficially own according to the filing?

The filing shows 37,500 shares held of record in his 401(k) account as indirect ownership and a separate line listing 85,576 shares with explanatory footnotes for ESPP and restricted stock.

Are any restricted shares or ESPP shares disclosed for the reporting person in the MTDR Form 4?

Yes. Footnotes state the total includes shares from the issuer’s Employee Stock Purchase Plan and restricted stock grants: 2,667 shares granted 02/16/2023 vesting on the third anniversary and 6,667 shares granted 02/14/2024 vesting in equal installments on the second and third anniversaries.

When was the Form 4 for MTDR signed and filed?

The signature block shows the form was signed by attorney-in-fact on 09/15/2025.