Diamondback Energy (FANG) director sells 6,000 shares in open-market trade

Rhea-AI Filing Summary

Diamondback Energy director Steven E. West sold 6,000 shares of Common Stock in an open-market transaction. The sale on March 18, 2026 was executed at a weighted average price of $188.3548 per share, with individual trades ranging from $187.95 to $188.69. After the sale, he directly holds 4,484 shares of Diamondback Energy common stock.

Insider Trade Summary

Net Seller: 6,000 shares ($1,130,129)

Net Sell 1 txn

Insider WEST STEVEN E

Role Director

Sold 6,000 shs ($1.13M)

Type	Security	Shares	Price	Value
Sale	Common Stock	6,000	$188.3548	$1.13M

Holdings After Transaction: Common Stock — 4,484 shares (Direct)

Footnotes (1)

1. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $187.95 per share to $188.69 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. Reflects the transfer of 3,068 shares of Common Stock in a transfer exempt from reporting pursuant to Rule 16a-12.

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^*

WEST STEVEN E

(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)
03/18/2026

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	03/18/2026		S		6,000	D	$188.3548(1)	4,484(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)
				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 $187.95 per share to $188.69 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.

2. Reflects the transfer of 3,068 shares of Common Stock in a transfer exempt from reporting pursuant to Rule 16a-12.

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Steven E. West	03/19/2026
	** 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 did Diamondback Energy (FANG) director Steven E. West report in this Form 4?

Steven E. West reported selling 6,000 shares of Diamondback Energy common stock. The transaction was an open-market sale and was fully disclosed with pricing details, including a weighted average sale price and the remaining shares he directly holds after the transaction.

How many Diamondback Energy (FANG) shares did Steven E. West sell and at what price?

He sold 6,000 shares of Diamondback Energy common stock at a weighted average price of $188.3548. Footnotes state the shares were sold in multiple trades at prices ranging from $187.95 to $188.69 per share, all on the same reported transaction date.

How many Diamondback Energy (FANG) shares does Steven E. West hold after this Form 4 sale?

After the reported sale, Steven E. West directly holds 4,484 shares of Diamondback Energy common stock. This figure reflects his position following the 6,000-share open-market disposition disclosed, providing investors with an updated view of his remaining direct ownership stake.

Was Steven E. West’s Diamondback Energy (FANG) transaction an open-market sale?

Yes, the Form 4 classifies the transaction as an open-market sale of common stock. The sale used transaction code “S,” with a description indicating a sale in an open market or private transaction, and detailed price ranges are provided in the accompanying footnote.

What does the weighted average price mean in Steven E. West’s FANG share sale?

The weighted average price of $188.3548 reflects multiple trades executed at different prices. According to the footnote, shares were sold in several transactions between $187.95 and $188.69, and Mr. West will provide full trade-by-trade pricing details upon request to interested parties.

Did the Form 4 mention any exempt share transfers for Diamondback Energy (FANG)?

Yes, a footnote notes the transfer of 3,068 shares of common stock in a transaction exempt from reporting. The exemption is described as being pursuant to Rule 16a-12, indicating this transfer did not require standard transactional reporting within the main Form 4 tables.