Diamondback director sells 75,000 shares at $204

Diamondback Energy director Travis D. Stice sold 75,000 FANG shares and now holds stock both directly and through Stice Investments, Ltd.

Rhea-AI Filing Summary

Diamondback Energy, Inc. (FANG) director Travis D. Stice reported selling 75,000 shares of common stock on September 11, 2026 in an open-market transaction at a weighted average price of $204.31 per share, with individual sale prices ranging from $203.77 to $204.715 per share.

After this sale, he held 49,727 shares directly and 305,314 shares indirectly through Stice Investments, Ltd., which is managed by Stice Management, LLC, an entity owned by Mr. Stice and his spouse. No Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Net Seller: 75,000 shares

Net Sell 2 txns

Insider Stice Travis D.

Role Director

Sold 75,000 shs ($15.32M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	75,000	$204.3103	$15.32M
holding	Common Stock F2	--	--	--

Holdings After Transaction: Common Stock — 49,727 shares (Direct); Common Stock — 305,314 shares (Indirect, By Stice Investments, Ltd.)

Footnotes (2)

1. F1. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $203.77 per share to $204.715 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. F2. These securities are held by Stice Investments, Ltd., which is managed by Stice Management, LLC, its general partner. Mr. Stice and his spouse hold 100% of the membership interests in Stice Management, LLC, of which Mr. Stice is the manager.

Key Figures

Shares sold: 75,000 shares Weighted average sale price: $204.31 per share Sale price range: $203.77–$204.715 per share +2 more

5 metrics

Shares sold 75,000 shares Common stock sale on September 11, 2026 by director Travis D. Stice

Weighted average sale price $204.31 per share Open-market sale of 75,000 shares on September 11, 2026

Sale price range $203.77–$204.715 per share Multiple transactions included in the 75,000-share sale

Direct holdings after transaction 49,727 shares Common stock directly owned by Travis D. Stice after the sale

Indirect holdings after transaction 305,314 shares Common stock held indirectly through Stice Investments, Ltd.

Key Terms

weighted average sale price, general partner, membership interests, indirect ownership

4 terms

weighted average sale price financial

"The price reported in Column 4 is a weighted average sale price."

general partner financial

"Stice Investments, Ltd., which is managed by Stice Management, LLC, its general partner."

A general partner is the person or firm that runs an investment partnership and legally represents it — they make the day-to-day decisions, choose which assets to buy or sell, and are responsible for the partnership’s obligations. Investors care because the general partner’s judgment, risk-taking and fee and profit-sharing arrangements determine both the potential returns and the level of exposure to losses; think of the GP as the ship’s captain whose skill and honesty shape the voyage’s outcome.

membership interests financial

"Mr. Stice and his spouse hold 100% of the membership interests in Stice Management, LLC."

An ownership stake in a limited liability company (LLC) that represents a holder’s share of the business’s profits, losses, and decision-making power. Think of it like a slice of the company’s pie and a seat at its management table: it determines how much money the owner can receive and how much influence they have over company choices. Investors care because these interests affect returns, control, transferability, and tax treatment.

indirect ownership financial

"These securities are held by Stice Investments, Ltd., indicating indirect ownership."

FAQ

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

What insider transaction did FANG director Travis D. Stice report?

Travis D. Stice reported a sale of 75,000 shares of Diamondback Energy, Inc. common stock on September 11, 2026 in an open-market transaction at a weighted average price of $204.31 per share, with prices ranging from $203.77 to $204.715 per share.

How many Diamondback Energy (FANG) shares does Travis D. Stice own after this Form 4?

After the reported sale, Travis D. Stice held 49,727 shares directly and 305,314 shares indirectly through Stice Investments, Ltd., as disclosed in the filing.

Was the Travis D. Stice sale of FANG shares under a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 checkbox is not marked, and the footnotes do not state that the 75,000-share sale was made pursuant to a Rule 10b5-1 trading plan.

What price range did Travis D. Stice receive for the 75,000 FANG shares sold?

The 75,000 shares were sold in multiple transactions at prices ranging from $203.77 to $204.715 per share, with a weighted average sale price of $204.31 per share, according to the footnote.

How are Travis D. Stice’s indirect FANG holdings structured?

The 305,314 indirectly held shares are owned by Stice Investments, Ltd., which is managed by Stice Management, LLC, its general partner. Mr. Stice and his spouse hold 100% of the membership interests in Stice Management, LLC, and Mr. Stice is its manager.

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

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Available on EDGAR 09/14/2026 - 04:07 PM Accepted by SEC EDGAR 09/14/2026 - 04:07 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^*

Stice Travis D.

(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)
09/11/2026

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	09/11/2026		S		75,000	D	$204.3103(1)	49,727	D
Common Stock								305,314	I(2)	By Stice Investments, Ltd.(2)

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 $203.77 per share to $204.715 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. These securities are held by Stice Investments, Ltd., which is managed by Stice Management, LLC, its general partner. Mr. Stice and his spouse hold 100% of the membership interests in Stice Management, LLC, of which Mr. Stice is the manager.

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Travis D. Stice	09/14/2026
	** 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)