Matador Resources EVP William Thomas Elsener buys 900 shares

The purchase was made through Matador Resources Co’s Employee Stock Purchase Plan; Elsener directly held 115,779 shares afterward.

Available on EDGAR 11/06/2026 - 07:31 AM EST Accepted by SEC EDGAR 11/06/2026 - 07:31 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Matador Resources Co EVP, Reservoir Engineering William Thomas Elsener purchased 900 common shares at $51.48 per share on November 5, 2026. The shares were acquired under the company’s Employee Stock Purchase Plan, and the acquisitions are exempt under Rule 16b-3. Elsener directly held 115,779 shares after the purchase; no Rule 10b5-1 plan was reported.

Insider Trade Summary

Net Buyer: 900 shares

Net Buy 1 txn

Insider Elsener William Thomas

Role EVP, Reservoir Engineering

Bought 900 shs ($46K)

Increase in Position 0.78%

Type	Security	Shares	Price	Value
Purchase	Common Stock F1	900	$51.48	$46K

Holdings After Transaction: Common Stock — 115,779 shares (Direct)

Holdings Before and After: Common Stock, 114,879 to 115,779 shares (Direct)

Other Insiders: 3 other insiders reported open-market purchases of this stock in the 30 days up to this filing.

Footnotes (1)

1. F1. Includes shares acquired pursuant to the Issuer's Employee Stock Purchase Plan. Such acquisitions are exempt under Rule 16b-3

Key Figures

Common shares purchased: 900 shares Purchase price: $51.48 per share Direct shares held after purchase: 115,779 shares

3 metrics

Common shares purchased 900 shares November 5, 2026

Purchase price $51.48 per share November 5, 2026

Direct shares held after purchase 115,779 shares After the November 5, 2026 purchase

Key Terms

Employee Stock Purchase Plan, Rule 16b-3, Rule 10b5-1

3 terms

Employee Stock Purchase Plan financial

"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

"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.

Rule 10b5-1 regulatory

"no Rule 10b5-1 plan was reported"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many MTDR shares did William Thomas Elsener buy?

William Thomas Elsener purchased 900 MTDR common shares at $51.48 per share on November 5, 2026. The shares were acquired under Matador Resources Co’s Employee Stock Purchase Plan, and he directly held 115,779 shares afterward. No Rule 10b5-1 plan was reported; the acquisitions are stated to be exempt under Rule 16b-3.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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^*

Elsener William Thomas

(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, Reservoir Engineering

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/05/2026

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	11/05/2026		P		900	A	$51.48	115,779(1)	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

Remarks:

	/s/ William Thomas Elsener, by Derek E. Gabriel as attorney-in-fact	11/06/2026
	** 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)