# EDGAR Filing Document

**Accession Number:** 0001520006
**File Stem:** 0001520006-26-000008
**Filing Date:** 2026-4
**Character Count:** 10364
**Document Hash:** 05be6a14263e87927c6de555f2e007ed
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001520006-26-000008.hdr.sgml**: 20260427

**ACCESSION NUMBER**: 0001520006-26-000008

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20260421

**ITEM INFORMATION**: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260427

**DATE AS OF CHANGE**: 20260427

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Matador Resources Co
- **CENTRAL INDEX KEY:** 0001520006
- **STANDARD INDUSTRIAL CLASSIFICATION:** CRUDE PETROLEUM & NATURAL GAS [1311]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 274662601
- **STATE OF INCORPORATION:** TX
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-35410
- **FILM NUMBER:** 26901500

**BUSINESS ADDRESS:**
- **STREET 1:** 5400 LBJ FREEWAY
- **STREET 2:** SUITE 1500
- **CITY:** DALLAS
- **STATE:** TX
- **ZIP:** 75240
- **BUSINESS PHONE:** 9723715200

**MAIL ADDRESS:**
- **STREET 1:** 5400 LBJ FREEWAY
- **STREET 2:** SUITE 1500
- **CITY:** DALLAS
- **STATE:** TX
- **ZIP:** 75240

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Matador Holdco, Inc.
- **DATE OF NAME CHANGE:** 20110505

?xml version='1.0' encoding='ASCII'? mtdr-20260421

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**_________________________________**

**FORM 8-K** 

**_________________________________**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d)**

**of the Securities Exchange Act of 1934**

**Date of Report (Date of Earliest Event Reported) April 21, 2026** 

**_________________________________**

**Matador Resources Company** 

**(Exact name of registrant as specified in its charter)**

**_________________________________**

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| | | |
|:---|:---|:---|
| **Texas** | **001-35410** | **27-4662601** |
| **(State or other jurisdiction<br>of incorporation)** | **(Commission<br>File Number)** | **(IRS Employer<br>Identification No.)** |

---

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| | | |
|:---|:---|:---|
| **5400 LBJ Freeway,** | **Suite 1500** | **75240** |
| **Dallas,** | **Texas** | |
| **(Address of principal executive offices)** | **(Address of principal executive offices)** | **(Zip Code)** |

---

**Registrant's telephone number, including area code: (972) 371-5200** 

**Not Applicable**

**(Former name or former address, if changed since last report)**

**_________________________________**

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading symbol(s)** | **Name of each exchange on which registered** |
| Common Stock, par value $0.01 per share | MTDR | New York Stock Exchange |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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| | |
|:---|:---|
| **Item 5.02** | **Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers** |

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Matador Resources Company (the "Company") today announced the promotion of Christopher P. Calvert to Executive Vice President and Chief Financial Officer and Glenn W. Stetson to Executive Vice President and Chief Operating Officer, each effective as of April 21, 2026.

Mr. Calvert joined the Company in October 2014 and most recently served as the Company's Executive Vice President and Chief Operating Officer. Mr. Stetson joined the Company in August 2014 and most recently served as the Company's Executive Vice President – Production. Mr. Calvert will assume the role of principal financial officer from Robert T. Macalik, who ceased serving as Chief Financial Officer on April 21, 2026. Mr. Macalik's cessation of service as Chief Financial Officer is not related to any financial or accounting issue or any disagreement with the Company on any matter relating to the Company's operations, policies or practices.

The biographical information regarding Messrs. Calvert and Stetson disclosed in the Company's Definitive Proxy Statement on Schedule 14A, filed with the Securities and Exchange Commission on April 28, 2025, under the heading "Executive Officers and Other Senior Officers of the Company", is incorporated herein by reference.

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| | |
|:---|:---|
| **Item 7.01** | **Regulation FD Disclosure.** |

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Attached hereto as Exhibit 99.1 is a press release issued by the Company on April 27, 2026, announcing the promotions of Messrs. Calvert and Stetson.

The information furnished pursuant to this Item 7.01, including Exhibit 99.1, shall not be deemed to be "filed" for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and will not be incorporated by reference into any filing under the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated therein by reference.

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| | |
|:---|:---|
| **Item 9.01** | **Financial Statements and Exhibits.** |

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 **(d) Exhibits**

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| | |
|:---|:---|
| **Exhibit No.** | **Description of Exhibit** |
| 99.1 | <u>[Press Release, dated April 27, 2026.](a20260427mtdr8-kexhibit991.htm)</u> |
| 104 | Cover Page Interactive Data File, formatted in Inline XBRL (included as Exhibit 101). |

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**SIGNATURE**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | |
|:---|:---|:---|
| | **MATADOR RESOURCES COMPANY** | **MATADOR RESOURCES COMPANY** |
| Date: April 27, 2026 | By: | /s/ Bryan A. Erman |
|  | Name: | Bryan A. Erman |
|  | Title: | Co-President |

---

## Exhibit 99.1

**MATADOR RESOURCES COMPANY ANNOUNCES LEADERSHIP PROMOTIONS**

DALLAS, Texas, April 27, 2026 -- Matador Resources Company (NYSE: MTDR) ("Matador") today announced the following promotions, effective as of April 21, 2026:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Christopher P. Calvert has been promoted to Executive Vice President and Chief Financial Officer

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Glenn W. Stetson has been promoted to Executive Vice President and Chief Operating Officer

These promotions will further strengthen Matador's continued focus on execution, efficiency and long-term value creation.

Mr. Calvert and Mr. Stetson each have over ten years of experience leading departments at Matador and approximately 20 years of industry experience. Both have served on and been key members of Matador's Executive Committee. Mr. Calvert joined Matador in October 2014 and most recently served as our Executive Vice President and Chief Operating Officer. Mr. Stetson joined Matador in August 2014 and most recently served as our Executive Vice President – Production. Mr. Calvert will assume the role of Chief Financial Officer from Robert T. Macalik, who ceased serving as Chief Financial Officer on April 21, 2026. Mr. Macalik's cessation of service as Chief Financial Officer is not related to any financial or accounting issue or any disagreement with Matador on any matter relating to Matador's operations, policies or practices.

Joseph Wm. Foran, Matador's Founder, Chairman and Chief Executive Officer, stated, "I would like to congratulate Chris and Glenn on their well-deserved promotions. Chris and Glenn have both operational and leadership experience, and they have been large contributors to Matador's growth since joining us in 2014. Chris's operational and business experience and technical knowledge, combined with his relationships with our various staff members, shareholders, bondholders, analyst community and bank group, uniquely position him to head our finance team as Chief Financial Officer. Glenn has consistently demonstrated his skill in identifying and developing a team focused on delivering record results for Matador's various operations and midstream activities under his purview, and he will continue to cultivate that focus as Chief Operating Officer."

**About Matador Resources Company**

Matador is an independent energy company engaged in the exploration, development, production and acquisition of oil and natural gas resources in the United States, with an emphasis on oil and natural gas shale and other unconventional plays. Its current operations are focused primarily on the oil and liquids-rich portion of the Wolfcamp and Bone Spring plays in the Delaware Basin in Southeast New Mexico and West Texas. Matador also operates in the Haynesville shale and Cotton Valley plays in Northwest Louisiana. Additionally, Matador conducts midstream operations in support of its exploration, development and production operations and provides natural gas processing, oil transportation services, natural gas, oil and produced water gathering services and produced water disposal services to third parties.

For more information, visit Matador Resources Company at <u>www.matadorresources.com</u>.

**Contact Information**&nbsp;&nbsp;&nbsp;&nbsp;

Mac Schmitz

Senior Vice President - Investor Relations

(972) 371-5225

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<u>investors@matadorresources.com</u> 

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