Christopher P. Calvert - 14 Feb 2026 Form 4 Insider Report for Matador Resources Co (MTDR)

Role
EVP and COO
Signature
/s/ Christopher P. Calvert, by Cale L. Curtin as attorney-in-fact
Issuer symbol
MTDR
Transactions as of
14 Feb 2026
Net transactions value
-$112,904
Form type
4
Filing time
18 Feb 2026, 18:48:03 UTC
Previous filing
08 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Calvert Christopher P EVP and COO 5400 LBJ FREEWAY, SUITE 1500, DALLAS /s/ Christopher P. Calvert, by Cale L. Curtin as attorney-in-fact 18 Feb 2026 0002020286

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MTDR Common Stock Tax liability $62,714 -1,312 -1.5% $47.80 86,362 14 Feb 2026 Direct F1, F2
transaction MTDR Common Stock Tax liability $50,190 -1,050 -1.2% $47.80 85,312 16 Feb 2026 Direct F3, F4
holding MTDR Common Stock 40,000 14 Feb 2026 Represents shares held of record by the reporting person's 401(k) account

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MTDR Phantom Units Options Exercise $0 -6,000 -33% $0.000000 12,000 14 Feb 2026 Common Stock 6,000 Direct F5, F6
transaction MTDR Phantom Units Award $0 +27,000 $0.000000 27,000 17 Feb 2026 Common Stock 27,000 Direct F7, F8
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
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.