Diamondback Energy (NASDAQ: FANG) CFO trims stake with 500-share sale

Rhea-AI Filing Summary

Diamondback Energy, Inc. (FANG) reported that its CFO and Executive Vice President, Jere W. Thompson III, sold 500 shares of Common Stock on 2026-08-14 at an average price of $204.1401 per share. Following this open-market sale, he directly owns 18,475 shares of Diamondback Energy common stock.

Insider Trade Summary

Net Seller: 500 shares

Net Sell 1 txn

Insider Thompson Jere W III

Role CFO, Executive VP

Sold 500 shs ($102K)

Type	Security	Shares	Price	Value
Sale	Common Stock	500	$204.1401	$102K

Holdings After Transaction: Common Stock — 18,475 shares (Direct)

Key Figures

Shares Sold: 500 shares Sale Price: $204.1401 per share Shares Owned After Transaction: 18,475 shares +1 more

4 metrics

Shares Sold 500 shares Non-derivative sale of Common Stock on 2026-08-14

Sale Price $204.1401 per share Average price for the 500 shares sold on 2026-08-14

Shares Owned After Transaction 18,475 shares Directly owned Common Stock following the reported sale

Net Shares Sold 500 shares Net-sell direction across all reported transactions in this filing

Key Terms

non-derivative, transaction code "S", direct or indirect ownership

3 terms

non-derivative financial

"the transaction_type was reported as "non-derivative""

transaction code "S" financial

"The filing lists transaction_code "S" for the sale"

direct or indirect ownership financial

"The field direct_or_indirect was reported as "D" (direct)"

FAQ

What insider transaction did FANG disclose for Jere W. Thompson III?

Diamondback Energy (FANG) disclosed that CFO and Executive VP Jere W. Thompson III sold 500 shares of Common Stock. The transaction occurred on 2026-08-14 and is reported as a non-derivative sale in the open market or a private transaction.

At what price were the Diamondback Energy (FANG) shares sold by the CFO?

Jere W. Thompson III sold his Diamondback Energy (FANG) shares at an average price of $204.1401 per share. The sale involved 500 shares of Common Stock, as reported in the Form 4 insider transaction filing.

How many Diamondback Energy (FANG) shares does the CFO hold after the reported sale?

After the reported sale, Jere W. Thompson III directly holds 18,475 shares of Diamondback Energy (FANG) Common Stock. This post-transaction ownership reflects the remaining stake following the disposition of 500 shares on 2026-08-14.

What type of security was involved in the FANG insider sale by the CFO?

The insider transaction by Jere W. Thompson III involved Common Stock of Diamondback Energy (FANG). It was categorized as a non-derivative transaction, meaning it related directly to common shares rather than options or other derivative securities.

Was the 2026-08-14 FANG insider transaction a purchase or a sale?

The 2026-08-14 insider transaction for Diamondback Energy (FANG) by Jere W. Thompson III was a sale. He disposed of 500 shares of Common Stock in an open-market or private transaction, as indicated by transaction code “S.”

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/17/2026 - 04:02 PM Accepted by SEC EDGAR 08/17/2026 - 04:02 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^*

Thompson Jere W III

(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)
	CFO, Executive VP

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/14/2026

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	08/14/2026		S		500	D	$204.1401	18,475	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:

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Jere W. Thompson III	08/17/2026
	** 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)