Matador Resources (NYSE: MTDR) EVP buys 500 shares in open market

Rhea-AI Filing Summary

Matador Resources Co executive Glenn W. Stetson, EVP and COO, made an open-market purchase of 500 shares of Common Stock on May 28, 2026 at $53.94 per share. After this buy, he directly holds 94,970 shares of Matador common stock.

His direct holdings include 3,334 shares of restricted stock granted on February 14, 2024 that vest on the third anniversary of the grant date, as well as shares acquired through the company’s Employee Stock Purchase Plan, which are exempt under Rule 16b-3.

Insider Trade Summary

Net Buyer: 500 shares ($26,970)

Net Buy 1 txn

Insider Stetson Glenn W

Role EVP and COO

Bought 500 shs ($27K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	500	$53.94	$27K

Holdings After Transaction: Common Stock — 94,970 shares (Direct, null)

Footnotes (1)

1. Includes 3,334 shares of restricted stock granted to the reporting person on February 14, 2024 that vest on the third anniversary of the date of grant. Includes shares acquired pursuant to the Issuer's Employee Stock Purchase Plan. Such acquisitions are exempt under Rule 16b-3.

Key Figures

Shares purchased: 500 shares Purchase price: $53.94 per share Total direct holdings: 94,970 shares +2 more

5 metrics

Shares purchased 500 shares Open-market purchase on May 28, 2026

Purchase price $53.94 per share Open-market common stock purchase

Total direct holdings 94,970 shares Shares directly owned after the transaction

Restricted stock grant 3,334 shares Granted February 14, 2024; vest on third anniversary

Net buy direction 500 shares net buy transactionSummary netBuySellShares and direction

Key Terms

restricted stock, Employee Stock Purchase Plan, Rule 16b-3, open-market purchase

4 terms

restricted stock financial

"Includes 3,334 shares of restricted stock granted to the reporting person"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Employee Stock Purchase Plan financial

"Includes shares acquired pursuant to the Issuer's Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

Rule 16b-3 regulatory

"Such acquisitions are exempt under Rule 16b-3"

Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.

open-market purchase financial

"transaction_action: open-market purchase"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

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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^*

Stetson Glenn W

(Last) (First) (Middle)

5400 LBJ FREEWAY

SUITE 1500

(Street)

DALLAS TEXAS 75240

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/28/2026

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 Stock	05/28/2026		P		500	A	$53.94	94,970(1)(2)	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 3,334 shares of restricted stock granted to the reporting person on February 14, 2024 that vest on the third anniversary of the date of grant.

2. Includes shares acquired pursuant to the Issuer's Employee Stock Purchase Plan. Such acquisitions are exempt under Rule 16b-3.

Remarks:

	/s/ Glenn W. Stetson, by Derek E. Gabriel as attorney-in-fact	06/01/2026
	** 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 Matador Resources (MTDR) report for Glenn W. Stetson?

Glenn W. Stetson, EVP and COO, bought 500 Matador shares in the open market. The purchase occurred on May 28, 2026 at $53.94 per share, increasing his direct common stock holdings to 94,970 shares after the transaction.

How many Matador Resources (MTDR) shares does Glenn W. Stetson hold after this Form 4?

Following the transaction, Glenn W. Stetson directly holds 94,970 Matador shares. This total includes 3,334 restricted shares granted on February 14, 2024, plus additional shares acquired through the company’s Employee Stock Purchase Plan, as noted in the footnotes.

What price did Glenn W. Stetson pay per Matador Resources (MTDR) share?

He paid $53.94 per Matador common share in this open-market purchase. The Form 4 describes the transaction as a purchase in the open market or a private transaction, coded as a P transaction under SEC reporting rules.

What do the restricted stock footnotes mean in the Matador Resources (MTDR) Form 4?

The filing notes 3,334 shares of restricted stock granted on February 14, 2024. These restricted shares vest on the third anniversary of the grant date, meaning they will fully vest three years after February 14, 2024, subject to applicable terms.

How are Employee Stock Purchase Plan shares treated in this Matador Resources (MTDR) filing?

The Form 4 states that some shares were acquired through Matador’s Employee Stock Purchase Plan. These plan-based acquisitions are described as exempt under Rule 16b-3, which provides regulatory relief for certain employee benefit-related transactions.

Does Glenn W. Stetson have any derivative positions disclosed in this Matador Resources (MTDR) Form 4?

The derivative summary in this Form 4 shows no outstanding derivative positions. There are no option, warrant, or other derivative transactions reported, and the filing focuses solely on the direct common stock purchase and existing restricted stock.