Diamondback Energy: Wolfrock sells 33,333 shares

Q: How many FANG shares did Wolfrock Energy sell?

Wolfrock Energy, LLC’s three reported sales covered 33,333 shares on October 5, 2026: 20,503, 6,476 and 6,354 shares.

The shares were held by Wolfrock Energy, LLC, and the sales were made under a trading plan adopted on March 17, 2026.

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Form Type

Rhea-AI Filing Summary

Diamondback Energy, Inc. director Charles Alvin Meloy reported three sales of common stock held by Wolfrock Energy, LLC on October 5, 2026: 20,503 shares at a weighted average sale price of $183.1748 per share, 6,476 shares at $184.3135 per share, and 6,354 shares at $184.9904 per share. The sales were made under a Rule 10b5-1 trading plan adopted on March 17, 2026. Wolfrock’s sole member is CS Ventures, Ltd., which is controlled by its general partner, Meloy Management, LLC; Meloy controls Meloy Management. Meloy separately reported direct holdings of 28,257 shares as of October 5, 2026.

Insights

Analyzing...

Insider Trade Summary 10b5-1

Net Seller: 33,333 shares

Net Sell 4 txns

Insider Meloy Charles Alvin

Role Director

Sold 33,333 shs ($6.12M)

Type	Security	Shares	Price	Value
Sale	Common Stock ^{F1, F2, F3}	20,503	$183.1748	$3.76M
Sale	Common Stock ^{F1, F4, F3}	6,476	$184.3135	$1.19M
Sale	Common Stock ^{F1, F5, F3}	6,354	$184.9904	$1.18M
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 759,864 shares (Indirect, Wolfrock Energy, LLC); Common Stock — 28,257 shares (Direct)

Footnotes (5)

F1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Meloy on March 17, 2026.
F2. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $182.645 per share to $183.64 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 and in footnotes 4 and 5.
F3. These securities are held directly by Wolfrock Energy, LLC, a Texas limited liability company whose sole member is CS Ventures, Ltd. CS Ventures, Ltd. is controlled by its general partner, Meloy Management, LLC, which is controlled by the Reporting Person.
F4. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $183.65 per share to $184.58 per share, inclusive.
F5. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $184.66 per share to $185.505 per share, inclusive.

Key Figures

Common shares sold in first reported transaction: 20,503 shares Weighted average sale price in first reported transaction: $183.1748 per share Common shares sold in second reported transaction: 6,476 shares +4 more

7 metrics

Common shares sold in first reported transaction 20,503 shares Wolfrock Energy, LLC; October 5, 2026

Weighted average sale price in first reported transaction $183.1748 per share 20,503 shares; October 5, 2026

Common shares sold in second reported transaction 6,476 shares Wolfrock Energy, LLC; October 5, 2026

Weighted average sale price in second reported transaction $184.3135 per share 6,476 shares; October 5, 2026

Common shares sold in third reported transaction 6,354 shares Wolfrock Energy, LLC; October 5, 2026

Weighted average sale price in third reported transaction $184.9904 per share 6,354 shares; October 5, 2026

Direct common shares held by Charles Alvin Meloy 28,257 shares October 5, 2026

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, sole member, general partner

4 terms

Rule 10b5-1 trading plan regulatory

"effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average sale price financial

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

sole member technical

"whose sole member is CS Ventures, Ltd."

general partner technical

"controlled by its general partner, Meloy Management, LLC"

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.

FAQ

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

How many FANG shares did Wolfrock Energy sell?

Wolfrock Energy, LLC’s three reported sales covered 33,333 shares on October 5, 2026: 20,503, 6,476 and 6,354 shares.

What were the price ranges for Wolfrock Energy’s FANG sales?

The 20,503-share sale had a weighted average price of $183.1748, with sales ranging from $182.645 to $183.64 per share. The 6,476-share sale averaged $184.3135, ranging from $183.65 to $184.58; the 6,354-share sale averaged $184.9904, ranging from $184.66 to $185.505. The ranges are inclusive.

Were Wolfrock Energy’s FANG sales made under a 10b5-1 plan?

Yes. The three sales of shares held by Wolfrock Energy, LLC were effected pursuant to a Rule 10b5-1 trading plan adopted by Charles Alvin Meloy on March 17, 2026.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/07/2026 - 05:18 PM Accepted by SEC EDGAR 10/07/2026 - 05:18 PM

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^*

Meloy Charles Alvin

(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)
10/05/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	10/05/2026		S		20,503⁽¹⁾	D	$183.1748⁽²⁾	772,694	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	10/05/2026		S		6,476⁽¹⁾	D	$184.3135⁽⁴⁾	766,218	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	10/05/2026		S		6,354⁽¹⁾	D	$184.9904⁽⁵⁾	759,864	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock								28,257	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Meloy on March 17, 2026.

2. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $182.645 per share to $183.64 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 and in footnotes 4 and 5.

3. These securities are held directly by Wolfrock Energy, LLC, a Texas limited liability company whose sole member is CS Ventures, Ltd. CS Ventures, Ltd. is controlled by its general partner, Meloy Management, LLC, which is controlled by the Reporting Person.

4. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $183.65 per share to $184.58 per share, inclusive.

5. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $184.66 per share to $185.505 per share, inclusive.

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Charles A. Meloy	10/07/2026
	** 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)

Source: View Original Filing on SEC EDGAR