STOCK TITAN

Matador Resources (NYSE: MTDR) CFO adds 1,500 shares in 401(k)

Filing Impact
(Neutral)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Matador Resources EVP and CFO Christopher P. Calvert increased his stake through an open-market purchase. On May 29, 2026, he bought 1,500 shares of Matador Resources common stock at $53.24 per share in his 401(k) account, bringing those indirect holdings to 41,500 shares.

Separately, he directly owns 85,312 shares of common stock, which include 3,334 restricted shares granted on February 14, 2024 that vest on the third anniversary of that grant date, as well as shares acquired under the company’s Employee Stock Purchase Plan. The transaction size is modest relative to his total reported holdings.

Positive

  • None.

Negative

  • None.
Insider Calvert Christopher P
Role EVP and CFO
Bought 1,500 shs ($80K)
Type Security Shares Price Value
Purchase Common Stock 1,500 $53.24 $80K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 41,500 shares (Indirect, Represents shares held of record by the reporting person's 401(k) account); Common Stock — 85,312 shares (Direct, null)
Footnotes (1)
  1. Includes 3,334 shares of restricted stock granted to the reporting person on February 14, 2024 that vest on the third anniversary of the date of grant. Includes shares acquired pursuant to the Issuer's Employee Stock Purchase Plan. Such acquisitions are exempt under Rule 16b-3.
Shares purchased 1,500 shares Open-market purchase on May 29, 2026
Purchase price $53.24/share Price paid for common stock
Indirect holdings after trade 41,500 shares Shares held in 401(k) after purchase
Direct holdings 85,312 shares Common stock directly owned following reported transactions
Restricted stock grant 3,334 shares Granted February 14, 2024; vest on third anniversary
Net buy shares 1,500 shares Net effect of reported insider transactions
open-market purchase financial
"represents an open-market purchase of common stock through the reporting person's 401(k) account"
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
restricted stock financial
"Includes 3,334 shares of restricted stock granted to the reporting person"
Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.
Employee Stock Purchase Plan financial
"Includes shares 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
"Such 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.
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SEC Form 4
FORM 4UNITED 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*
Calvert Christopher P

(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP and CFO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/29/2026P1,500A$53.2441,500IRepresents shares held of record by the reporting person's 401(k) account
Common Stock85,312(1)(2)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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Includes 3,334 shares of restricted stock granted to the reporting person on February 14, 2024 that vest on the third anniversary of the date of grant.
2. Includes shares acquired pursuant to the Issuer's Employee Stock Purchase Plan. Such acquisitions are exempt under Rule 16b-3.
Remarks:
/s/ Christopher P. Calvert, by Derek E. Gabriel as attorney-in-fact06/02/2026
** Signature of Reporting PersonDate
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)

FAQ

What insider transaction did Matador Resources (MTDR) report for Christopher P. Calvert?

Matador Resources reported that EVP and CFO Christopher P. Calvert bought 1,500 shares of common stock. The purchase was an open-market transaction routed through his 401(k) account, indicating an incremental increase in his indirect ownership of Matador shares.

At what price did the Matador Resources (MTDR) CFO buy shares and how many?

Christopher P. Calvert purchased 1,500 Matador Resources common shares at a price of $53.24 per share. This open-market buy was recorded as an indirect holding through his 401(k), as disclosed in the insider transaction data for May 29, 2026.

How many Matador Resources (MTDR) shares does the CFO hold after this transaction?

After the transaction, Christopher P. Calvert holds 41,500 Matador shares indirectly in his 401(k) account and 85,312 shares directly. These direct holdings include restricted stock and shares obtained through the company’s Employee Stock Purchase Plan, according to the filing’s ownership details.

What restricted stock awards does the Matador Resources (MTDR) CFO have?

The CFO’s direct holdings include 3,334 shares of restricted stock granted on February 14, 2024. These restricted shares are scheduled to vest on the third anniversary of the grant date, providing long-term equity-based compensation tied to continued service with Matador Resources.

Does the Matador Resources (MTDR) Form 4 mention an Employee Stock Purchase Plan?

Yes. The filing notes that some of Christopher P. Calvert’s direct holdings include shares acquired under Matador’s Employee Stock Purchase Plan. These plan-related acquisitions are described as exempt from certain insider trading rules under Rule 16b-3 in the footnotes.

Is the Matador Resources (MTDR) CFO’s recent share purchase considered large?

The CFO’s 1,500-share purchase is relatively small compared with his reported holdings of 41,500 indirect shares and 85,312 direct shares. It represents a routine incremental increase rather than a transformative change in his overall ownership position in Matador Resources.