X0508 4 2026-02-14 0 0001520006 Matador Resources Co MTDR 0001633115 Singleton Van H II 5400 LBJ FREEWAY SUITE 1500 DALLAS TX 75240 0 1 0 0 CoPresident-Land, A&D,Planning 0 Phantom Units 2026-02-14 4 M 0 6666 0 D Common Stock 6666 13334 D Phantom Units 2026-02-14 4 M 0 5000 0 D Common Stock 5000 5000 D Phantom Units 2026-02-16 4 M 0 5000 0 D Common Stock 5000 0 D Phantom Units 2026-02-17 4 A 0 35000 0 A Common Stock 35000 35000 D 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. The phantom units vest in equal annual installments on the first, second and third anniversaries of the date of grant, February 14, 2025. The phantom units vest in equal annual installments on the first, second and third anniversaries of the date of grant, February 14, 2024. Each phantom unit is the economic equivalent of one share of common stock of the Issuer's common stock. As required by the terms of the award, upon the February 16, 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. The phantom units vest in equal annual installments on the first, second and third anniversaries of the date of grant, February 16, 2023. Each phantom unit is the economic equivalent of one share of the Issuer's common stock. The phantom units vest in equal annual installments on the first, second and third anniversaries of the date of grant. /s/ Van H. Singleton, II, by Cale L. Curtin as attorney-in-fact 2026-02-18