Diamondback Energy (FANG) director pre-planned sale of 15,714 shares disclosed

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Diamondback Energy director Charles Alvin Meloy, through Wolfrock Energy, LLC, reported open-market sales of 15,714 shares of Diamondback Energy common stock on May 7–8, 2026. The sales were executed under a Rule 10b5-1 trading plan adopted on August 13, 2025, meaning they were pre-scheduled rather than discretionary trades.

The reported sale prices were weighted averages around $187–$190 per share. After these transactions, Wolfrock Energy, LLC held 934,864 shares indirectly attributed to Meloy, while he also held 2,275 shares directly, indicating he retains a substantial equity position in Diamondback Energy.

Insider Trade Summary 10b5-1

Net Seller: 15,714 shares ($2,972,098)

Net Sell 8 txns

Insider Meloy Charles Alvin

Role null

Sold 15,714 shs ($2.97M)

Type	Security	Shares	Price	Value
Sale	Common Stock	403	$187.5356	$76K
Sale	Common Stock	3,545	$188.7179	$669K
Sale	Common Stock	3,909	$189.5616	$741K
Sale	Common Stock	842	$187.3508	$158K
Sale	Common Stock	1,636	$188.1145	$308K
Sale	Common Stock	2,492	$189.4385	$472K
Sale	Common Stock	2,887	$190.14	$549K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 942,318 shares (Indirect, Wolfrock Energy, LLC); Common Stock — 2,275 shares (Direct, null)

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 $186.725 per share to $187.72 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 $187.73 per share to $188.725 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 $188.75 per share to $189.75 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 $189.76 per share to $190.715 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 $187.18 per share to $188.165 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 $188.19 per share to $189.19 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 $189.195 per share to $190.195 per share, inclusive.

Key Figures

Total shares sold: 15,714 shares May 7, 2026 sale block: 2,887 shares at $190.1400 Largest May 8 sale block: 3,909 shares at $189.5616 +4 more

7 metrics

Total shares sold 15,714 shares Open-market sales on May 7–8, 2026

May 7, 2026 sale block 2,887 shares at $190.1400 Indirect sale via Wolfrock Energy, LLC

Largest May 8 sale block 3,909 shares at $189.5616 Indirect sale via Wolfrock Energy, LLC

Indirect holdings after trades 934,864 shares Wolfrock Energy, LLC position following last sale

Direct holdings entry 2,275 shares Direct ownership as of May 7, 2026

Price range footnote low $186.725 per share Lowest price in noted transaction ranges

Price range footnote high $190.715 per share Highest price in noted transaction ranges

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 adopted by Mr. Meloy on August 13, 2025."

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... which is controlled by the Reporting Person."

open-market sale financial

"transaction_action: "open-market sale" with transaction code "S" for Common Stock."

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.

Texas limited liability company regulatory

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

Form 4 Insider Transactions: What Each Field Means →

05/11/2026 - 04:09 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)
05/07/2026

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	05/07/2026		S		842⁽¹⁾	D	$187.3508⁽²⁾	949,736	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	05/07/2026		S		1,636⁽¹⁾	D	$188.1145⁽⁴⁾	948,100	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	05/07/2026		S		2,492⁽¹⁾	D	$189.4385⁽⁵⁾	945,608	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	05/07/2026		S		2,887⁽¹⁾	D	$190.14⁽⁶⁾	942,721	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	05/08/2026		S		403⁽¹⁾	D	$187.5356⁽⁷⁾	942,318	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	05/08/2026		S		3,545⁽¹⁾	D	$188.7179⁽⁸⁾	938,773	I⁽³⁾	Wolfrock Energy, LLC⁽³⁾
Common Stock	05/08/2026		S		3,909⁽¹⁾	D	$189.5616⁽⁹⁾	934,864	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 $186.725 per share to $187.72 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 $187.73 per share to $188.725 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 $188.75 per share to $189.75 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 $189.76 per share to $190.715 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 $187.18 per share to $188.165 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 $188.19 per share to $189.19 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 $189.195 per share to $190.195 per share, inclusive.

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Charles A. Meloy	05/11/2026
	** 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 Meloy report in this Form 4?

Director Charles Alvin Meloy reported indirect open-market sales of 15,714 Diamondback Energy shares. The trades occurred through Wolfrock Energy, LLC on May 7–8, 2026 at weighted average prices near $187–$190 per share.

How many Diamondback Energy (FANG) shares did Wolfrock Energy, LLC sell?

Wolfrock Energy, LLC sold a total of 15,714 Diamondback Energy common shares. These were executed in multiple open-market transactions on May 7 and 8, 2026 at various prices within the $186.725–$190.715 range.

What shares does Charles Meloy still own in Diamondback Energy (FANG) after these trades?

After the reported trades, Wolfrock Energy, LLC held 934,864 Diamondback Energy shares indirectly attributed to Charles Meloy, and a separate direct holding entry shows 2,275 shares in his own name as of May 7, 2026.

Were the Diamondback Energy (FANG) insider sales by Charles Meloy pre-planned?

Yes. The Form 4 states the transactions were effected under a Rule 10b5-1 trading plan adopted by Charles Meloy on August 13, 2025. Such pre-set plans execute trades automatically according to predetermined instructions.

At what prices were the Diamondback Energy (FANG) shares sold in these insider trades?

The weighted average sale prices ranged from about $187.35 to $190.14 per share. Footnotes indicate underlying transaction prices between $186.725 and $190.715 per share across the different trade blocks.

Are these Diamondback Energy (FANG) sales direct or indirect holdings of Charles Meloy?

The sales involved shares held indirectly through Wolfrock Energy, LLC, whose ownership chain leads to Charles Meloy. A separate entry shows 2,275 shares held directly in his own name as of May 7, 2026.