Matador Resources Co — Director's Dealing 2026

Feb 18, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Matador Resources Co (MTDR)
CIK: 0001520006
Period of Report: 2026-02-14

Reporting Person: Calvert Christopher P (EVP and COO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-14	Common Stock	F	1312	$47.80	Disposed	86362	Direct
2026-02-16	Common Stock	F	1050	$47.80	Disposed	85312	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-14	Phantom Units	$	M	6000	Disposed		Common Stock (6000)	Direct
2026-02-17	Phantom Units	$	A	27000	Acquired		Common Stock (27000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	40000	Indirect

Footnotes

F1: Represents shares withheld by the Issuer in connection with the reporting person's net share settlement to satisfy tax liability upon the vesting of 3,333 shares of restricted stock that were granted to the reporting person on February 14, 2024. No shares were sold by the reporting person to satisfy this tax liability.

F2: Includes (i) shares acquired pursuant to the Issuer's Employee Stock Purchase Plan; such acquisitions are exempt under Rule 16b-3; (ii) 3,333 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; and (iii) 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.

F3: Represents shares withheld by the Issuer in connection with the reporting person's net share settlement to satisfy tax liability upon the vesting of 2,667 shares of restricted stock that were granted to the reporting person on February 16, 2023. No shares were sold by the reporting person to satisfy this tax liability.

F4: Includes (i) shares acquired pursuant to the Issuer's Employee Stock Purchase Plan; such acquisitions are exempt under Rule 16b-3; and (ii) 3,333 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.

F5: Each phantom unit is the economic equivalent of one share of the Issuer's common stock. As required by the terms of the award, upon the February 14, 2026 partial vesting of such award, the reporting person settled the phantom units for cash at a rate of $47.80 per unit based upon the closing price of the Issuer's common stock on February 13, 2026. No shares of common stock were issued to nor sold by the reporting person pursuant to this transaction.

F6: The phantom units vest in equal annual installments on the first, second and third anniversaries of the date of grant, February 14, 2025.

F7: Each phantom unit is the economic equivalent of one share of the Issuer's common stock.

F8: The phantom units vest in equal annual installments on the first, second and third anniversaries of the date of grant.