Diamondback director awarded 982 restricted units

REEVES ROBERT K reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

REEVES ROBERT K reported acquisition or exercise transactions in this Form 4 filing.

Diamondback Energy, Inc. director Robert K. Reeves received an award of 982 shares of common stock in the form of restricted stock units. The grant was made at no cash cost to him as an annual non-employee director grant under the company’s equity incentive plan. These restricted stock units each represent the right to receive one share of common stock and will vest on the earlier of the one-year anniversary of the grant date and the date of Diamondback’s 2027 annual meeting of stockholders. Following this award, Reeves directly holds 6,066 shares of common stock.

Insider Trade Summary

Grant/Award: 982 shares

Grant/Award 1 txn

Insider REEVES ROBERT K

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	982	$0.00	$0.00

Holdings After Transaction: Common Stock — 6,066 shares (Direct)

Footnotes (1)

1. F1. These securities are restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.01 per share, of the issuer. These restricted stock units were granted to Mr. Reeves as an annual non-employee director grant under the issuer's equity incentive plan and will vest on the earlier of the one-year anniversary of the date of grant and the date of the 2027 annual meeting of stockholders of the issuer.

Key Figures

RSU grant size: 982 shares Post-grant holdings: 6,066 shares Grant price per share: $0.0000 per share

3 metrics

RSU grant size 982 shares Restricted stock units granted to Robert K. Reeves

Post-grant holdings 6,066 shares Total Diamondback Energy common stock held directly after grant

Grant price per share $0.0000 per share Reported transaction price for the restricted stock unit award

Key Terms

restricted stock units, equity incentive plan, annual non-employee director grant

3 terms

restricted stock units financial

"These securities are restricted stock units, each representing a contingent right"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

equity incentive plan financial

"granted to Mr. Reeves as an annual non-employee director grant under the issuer's equity incentive plan"

An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.

annual non-employee director grant financial

"These restricted stock units were granted to Mr. Reeves as an annual non-employee director grant"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Diamondback Energy (FANG) report for Robert K. Reeves?

Diamondback Energy reported that director Robert K. Reeves received 982 restricted stock units as an annual non-employee director grant. Each unit represents one share of common stock granted at no cash cost to him.

How many Diamondback Energy (FANG) shares does Robert K. Reeves hold after this grant?

After the grant, Robert K. Reeves directly holds 6,066 shares of Diamondback Energy common stock. This total includes the 982 shares underlying the newly awarded restricted stock units reported in the Form 4 filing.

What are the terms of the restricted stock units granted by Diamondback Energy (FANG)?

The restricted stock units each represent a contingent right to receive one share of Diamondback Energy common stock. They were granted as an annual non-employee director award and will vest based on specified timing tied to a future date and the 2027 annual meeting.

Did Robert K. Reeves buy Diamondback Energy (FANG) shares on the open market?

No, Robert K. Reeves did not buy shares on the open market. The 982 shares were granted to him as restricted stock units under Diamondback Energy’s equity incentive plan, with no purchase price per share reported.

When will Robert K. Reeves’s Diamondback Energy (FANG) restricted stock units vest?

The restricted stock units will vest on the earlier of the one-year anniversary of the grant date and the date of Diamondback Energy’s 2027 annual meeting of stockholders, according to the footnote in the Form 4 filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/21/2026 - 05:56 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

REEVES ROBERT K

(Last) (First) (Middle)

500 WEST TEXAS AVENUE

SUITE 100

(Street)

MIDLAND TEXAS 79701

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Diamondback Energy, Inc. [ FANG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/20/2026		A		982(1)	A	$0	6,066	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. These securities are restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.01 per share, of the issuer. These restricted stock units were granted to Mr. Reeves as an annual non-employee director grant under the issuer's equity incentive plan and will vest on the earlier of the one-year anniversary of the date of grant and the date of the 2027 annual meeting of stockholders of the issuer.

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Robert K. Reeves	05/21/2026
	** Signature of Reporting Person	Date
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)