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Diamondback Energy (FANG) director’s 33,333-share sale under 10b5-1 plan

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Diamondback Energy, Inc. director Charles Alvin Meloy, through Wolfrock Energy, LLC, sold 33,333 shares of common stock on August 3, 2026 in multiple open-market transactions at weighted average prices between $196.34 and $199.495 per share under a Rule 10b5-1 trading plan adopted March 17, 2026. He continues to hold 3,257 shares directly.

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Insider Meloy Charles Alvin
Role Director
Sold 33,333 shs ($6.61M)
Type Security Shares Price Value
Sale Common Stock F1, F2, F3 3,986 $197.0581 $785K
Sale Common Stock F1, F4, F3 7,562 $197.9121 $1.50M
Sale Common Stock F1, F5, F3 19,055 $198.739 $3.79M
Sale Common Stock F1, F6, F3 2,730 $199.4439 $544K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 818,197 shares (Indirect, Wolfrock Energy, LLC); Common Stock — 3,257 shares (Direct)
Footnotes (6)
  1. 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.
  2. F2. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $196.34 per share to $197.34 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 6.
  3. 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.
  4. F4. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $197.35 per share to $198.35 per share, inclusive.
  5. F5. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $198.36 per share to $199.36 per share, inclusive.
  6. F6. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $199.3825 per share to $199.495 per share, inclusive.
Shares sold 33,333 shares Aggregate common shares sold on August 3, 2026
Block sale 1 3,986 shares at $197.0581 per share Indirect sale through Wolfrock Energy, LLC on August 3, 2026
Block sale 2 7,562 shares at $197.9121 per share Indirect sale through Wolfrock Energy, LLC on August 3, 2026
Block sale 3 19,055 shares at $198.7390 per share Indirect sale through Wolfrock Energy, LLC on August 3, 2026
Block sale 4 2,730 shares at $199.4439 per share Indirect sale through Wolfrock Energy, LLC on August 3, 2026
Direct holdings 3,257 shares Common shares held directly by Charles Alvin Meloy after reported transactions
Rule 10b5-1 trading plan regulatory
"transactions reported were effected pursuant to a Rule 10b5-1 trading plan adopted"
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."
Wolfrock Energy, LLC financial
"These securities are held directly by Wolfrock Energy, LLC, a Texas limited liability company"
CS Ventures, Ltd. financial
"whose sole member is CS Ventures, Ltd. CS Ventures, Ltd. is controlled by its general partner"
Meloy Management, LLC financial
"controlled by its general partner, Meloy Management, LLC, which is controlled by the Reporting Person."

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FAQ

What insider transaction did Diamondback Energy (FANG) report for Charles Alvin Meloy?
Charles Alvin Meloy, a director of Diamondback Energy, oversaw the sale of 33,333 common shares on August 3, 2026. The shares were sold indirectly through Wolfrock Energy, LLC in multiple open-market transactions at weighted average prices around $196–$199 per share.

How many Diamondback Energy (FANG) shares were sold in the latest insider sale?
The reported insider transactions cover the sale of 33,333 Diamondback Energy common shares. These were executed in four separate blocks on August 3, 2026, all recorded as indirect sales through Wolfrock Energy, LLC rather than direct personal holdings.

At what prices were Diamondback Energy (FANG) shares sold in this transaction?
The shares were sold at weighted average prices between about $196.34 and $199.495 per share. Each transaction block has its own weighted average price, with individual trades executed across the specified price ranges described in the accompanying sale footnotes.

Was the Charles Alvin Meloy sale of Diamondback Energy (FANG) stock under a Rule 10b5-1 plan?
Yes. The sales were made under a Rule 10b5-1 trading plan adopted by Charles Alvin Meloy on March 17, 2026. This pre-arranged plan governed the execution of the August 3, 2026 transactions according to predetermined instructions rather than discretionary timing.

How many Diamondback Energy (FANG) shares does Charles Alvin Meloy still hold directly?
After the reported transactions, Charles Alvin Meloy holds 3,257 Diamondback Energy common shares directly. The Form 4 distinguishes these direct holdings from the larger blocks of shares that were sold indirectly through Wolfrock Energy, LLC on the same reporting date.

Who actually held the Diamondback Energy (FANG) shares sold in this report?
The sold shares were held by Wolfrock Energy, LLC, a Texas limited liability company. Wolfrock’s sole member is CS Ventures, Ltd., which is controlled by its general partner Meloy Management, LLC, an entity controlled by Charles Alvin Meloy, linking him to the indirect ownership.
SEC Form 4
FORM 4UNITED 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).
X
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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/03/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock08/03/2026S3,986(1)D$197.0581(2)847,544I(3)Wolfrock Energy, LLC(3)
Common Stock08/03/2026S7,562(1)D$197.9121(4)839,982I(3)Wolfrock Energy, LLC(3)
Common Stock08/03/2026S19,055(1)D$198.739(5)820,927I(3)Wolfrock Energy, LLC(3)
Common Stock08/03/2026S2,730(1)D$199.4439(6)818,197I(3)Wolfrock Energy, LLC(3)
Common Stock3,257D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
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 $196.34 per share to $197.34 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 6.
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 $197.35 per share to $198.35 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 $198.36 per share to $199.36 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 $199.3825 per share to $199.495 per share, inclusive.
Remarks:
/s/ Matt Zmigrosky, as attorney-in-fact for Charles A. Meloy08/04/2026
** Signature of Reporting PersonDate
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