Diamondback Energy (FANG) director sells 15,714 shares via 10b5-1 plan

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Diamondback Energy, Inc. director Charles Alvin Meloy, through Wolfrock Energy, LLC, reported open-market sales of a total of 15,714 shares of common stock. The transactions on April 6 and April 7, 2026 were executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 13, 2025. Following these sales, Wolfrock Energy, LLC continued to hold 950,578 shares indirectly, and Meloy also held 2,275 shares directly.

Insights

Pre-planned sales reduce indirect stake modestly while leaving a large remaining position.

Director Charles Alvin Meloy, via Wolfrock Energy, LLC, sold 15,714 shares of Diamondback Energy common stock in multiple open-market trades. Reported sale prices ranged roughly from $192.68 to $199.11 per share.

The filing states these sales were made under a Rule 10b5-1 trading plan adopted on August 13, 2025, indicating they were pre-scheduled rather than opportunistic. After the transactions, Wolfrock Energy, LLC still held 950,578 shares indirectly, and Meloy also held 2,275 shares directly, suggesting these are partial, portfolio-style dispositions rather than an exit.

Insider Trade Summary 10b5-1

Net Seller: 15,714 shares ($3,071,668)

Net Sell 8 txns

Insider Meloy Charles Alvin

Role Director

Sold 15,714 shs ($3.07M)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,885	$195.5504	$369K
Sale	Common Stock	2,370	$196.591	$466K
Sale	Common Stock	2,348	$197.8285	$465K
Sale	Common Stock	1,254	$198.4886	$249K
Sale	Common Stock	2,316	$193.3227	$448K
Sale	Common Stock	5,356	$194.1535	$1.04M
Sale	Common Stock	185	$195.1757	$36K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 956,550 shares (Indirect, Wolfrock Energy, LLC); Common Stock — 2,275 shares (Direct)

Footnotes (1)

The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Meloy on August 13, 2025. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $192.68 per share to $193.64 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 through 9. 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. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $193.72 per share to $194.695 per share, inclusive. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $195.00 per share to $195.48 per share, inclusive. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $195.18 per share to $196.14 per share, inclusive. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $196.19 per share to $197.185 per share, inclusive. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $197.19 per share to $198.18 per share, inclusive. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $198.19 per share to $199.11 per share, inclusive.

Key Figures

Shares sold: 15,714 shares Sale price range (low): $192.68 per share Sale price range (high): $199.11 per share +4 more

7 metrics

Shares sold 15,714 shares Total common stock sold in open-market transactions reported in this Form 4

Sale price range (low) $192.68 per share Lowest price in disclosed trade ranges for reported sales

Sale price range (high) $199.11 per share Highest price in disclosed trade ranges for reported sales

Indirect holdings after sales 950,578 shares Common stock held indirectly by Wolfrock Energy, LLC after reported transactions

Direct holdings 2,275 shares Common stock held directly by Charles Alvin Meloy as shown in holding entry

Rule 10b5-1 plan adoption date August 13, 2025 Date Meloy adopted the trading plan covering these sales

Sample sale price $195.5504 per share Weighted-average sale price for one reported 1,885-share transaction on April 7, 2026

Key Terms

Rule 10b5-1 trading plan, weighted average sale price, indirect ownership, open-market sale, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"The transactions reported in this Form 4 were 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."

indirect ownership financial

"These securities are held directly by Wolfrock Energy, LLC, a Texas limited liability company"

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 regulatory

"The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Form 4 Insider Transactions: What Each Field Means →

04/08/2026 - 04:06 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)
04/06/2026

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	04/06/2026		S		2,316⁽¹⁾	D	$193.3227⁽²⁾	963,976	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	04/06/2026		S		5,356⁽¹⁾	D	$194.1535⁽⁴⁾	958,620	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	04/06/2026		S		185⁽¹⁾	D	$195.1757⁽⁵⁾	958,435	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	04/07/2026		S		1,885⁽¹⁾	D	$195.5504⁽⁶⁾	956,550	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	04/07/2026		S		2,370⁽¹⁾	D	$196.591⁽⁷⁾	954,180	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	04/07/2026		S		2,348⁽¹⁾	D	$197.8285⁽⁸⁾	951,832	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	04/07/2026		S		1,254⁽¹⁾	D	$198.4886⁽⁹⁾	950,578	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock								2,275	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 August 13, 2025.

2. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $192.68 per share to $193.64 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 through 9.

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 $193.72 per share to $194.695 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 $195.00 per share to $195.48 per share, inclusive.

6. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $195.18 per share to $196.14 per share, inclusive.

7. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $196.19 per share to $197.185 per share, inclusive.

8. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $197.19 per share to $198.18 per share, inclusive.

9. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $198.19 per share to $199.11 per share, inclusive.

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Charles A. Meloy	04/08/2026
	** 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

FAQ

What did Diamondback Energy (FANG) director Charles Alvin Meloy report in this Form 4?

He reported open-market sales of 15,714 shares of Diamondback Energy common stock. The trades were made indirectly through Wolfrock Energy, LLC and executed over April 6–7, 2026 at prices around the high-$190s per share.

Were the FANG insider stock sales by Charles Alvin Meloy pre-planned?

Yes. The filing states the transactions were effected under a Rule 10b5-1 trading plan adopted on August 13, 2025. Such plans pre-schedule trades, indicating the timing of these sales was set in advance rather than being a discretionary market-timing decision.

How many Diamondback Energy shares did Charles Alvin Meloy sell and at what prices?

He sold a total of 15,714 common shares in several open-market transactions. Footnotes disclose weighted-average sale prices, with underlying trades occurring in ranges from $192.68 to $199.11 per share across the reported April 6 and April 7, 2026 transactions.

How many Diamondback Energy (FANG) shares does Charles Alvin Meloy hold after these transactions?

After the reported sales, Wolfrock Energy, LLC held 950,578 Diamondback Energy shares indirectly for Meloy. The filing also shows he holds 2,275 shares directly, indicating he still maintains a substantial overall equity position in the company following the Form 4 transactions.

Are the Diamondback Energy shares sold by Charles Alvin Meloy held directly or indirectly?

The 15,714 shares sold were held indirectly through Wolfrock Energy, LLC. Footnotes explain Wolfrock is controlled through CS Ventures, Ltd. and Meloy Management, LLC, entities ultimately controlled by Meloy, giving him indirect control over these holdings and their dispositions.

What does the Rule 10b5-1 trading plan mention mean in the FANG Form 4 filing?

The filing notes the sales were made under a Rule 10b5-1 trading plan adopted on August 13, 2025. Such plans allow insiders to pre-arrange trades at set parameters, helping separate routine portfolio management from discretionary timing based on near-term company developments.