Diamondback Energy (FANG) COO sells 5,000 shares in open-market trade

Rhea-AI Filing Summary

Diamondback Energy Exec. VP & COO Daniel N. Wesson sold 5,000 shares of Common Stock in an open-market transaction on 2026-03-20 at a weighted average price of $191.9552 per share. After this sale, he directly holds 78,289 shares, indicating he retains a substantial equity position.

The sale price reflects multiple individual trades executed between $191.9301 and $192.111 per share, as disclosed. The filing describes this as a routine open-market sale rather than a derivative exercise or tax-related transaction.

Insider Trade Summary

Net Seller: 5,000 shares ($959,776)

Net Sell 1 txn

Insider Wesson Daniel N

Role Exec. VP & COO

Sold 5,000 shs ($960K)

Type	Security	Shares	Price	Value
Sale	Common Stock	5,000	$191.9552	$960K

Holdings After Transaction: Common Stock — 78,289 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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^*

Wesson Daniel N

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Exec. VP & COO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/20/2026

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	03/20/2026		S		5,000	D	$191.9552(1)	78,289	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. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $191.9301 per share to $192.111 per share, inclusive. The reporting person undertakes to provide to Diamondback Energy, Inc., any security holder of Diamondback Energy, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Daniel N. Wesson	03/24/2026
	** 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)

FAQ

What insider transaction did Diamondback Energy (FANG) report for Daniel N. Wesson?

Diamondback Energy reported that Exec. VP & COO Daniel N. Wesson sold 5,000 shares of Common Stock on 2026-03-20 in an open-market transaction at a weighted average price of $191.9552 per share, according to a Form 4 filing.

At what price did the Diamondback Energy (FANG) COO sell his shares?

The shares were sold at a weighted average price of $191.9552 per share. The filing notes multiple trades occurred within a price range from $191.9301 to $192.111 per share, all on 2026-03-20.

How many Diamondback Energy (FANG) shares does Daniel N. Wesson hold after the sale?

After the reported sale, Daniel N. Wesson directly holds 78,289 shares of Diamondback Energy Common Stock. This post-transaction balance is disclosed in the Form 4 and reflects his remaining direct ownership position following the 5,000-share open-market sale.

Was the Diamondback Energy (FANG) insider sale a derivative exercise or a tax withholding event?

No. The transaction is classified as a non-derivative open-market sale of Common Stock with code “S.” The filing does not report any option exercises, tax withholding dispositions, or other derivative-related transactions in connection with this 5,000-share sale.

Who is the insider involved in the latest Diamondback Energy (FANG) Form 4 filing?

The insider is Daniel N. Wesson, Exec. VP & COO of Diamondback Energy. He reported selling 5,000 shares of Common Stock in an open-market transaction on 2026-03-20, leaving him with 78,289 shares held directly after the sale.