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Meloy Charles Alvin

Disclosed activity across 1 company

Tapewire entity
26593
SEC CIK
0001333454

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Diamondback Energy, Inc.FANG · Entity 1866DirectorOctober 05, 2026October 07, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Diamondback Energy, Inc.

Report date October 05, 2026 · Filed October 07, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectWolfrock Energy, LLC759,864 Last balance in matching sequence After 2026-10-05 transaction · row 3 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
3 source rows

Row 1 · 2026-10-05 · Sale · Disposed 20,503 · Balance 772,694

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.

Row 2 · 2026-10-05 · Sale · Disposed 6,476 · Balance 766,218

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.

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.

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.

Row 3 · 2026-10-05 · Sale · Disposed 6,354 · Balance 759,864

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.

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.

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.

Common StockSEC Table I · non-derivativeDirect28,257 Reported balance Holding disclosure · report date 2026-10-05 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 28,257

Filing footnotes · ownership attribution and instrument terms

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.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
October 05, 2026 Filed Oct 7, 2026 21:18 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 6,354 $184.99 $1,175,429.00
Disclosure

SEC source: 0001539838-26-000174 · wk-form4_1791407877.xml · nonDerivative · entry 3

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 759,864

F1 · shares: 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.

F5 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
October 05, 2026 Filed Oct 7, 2026 21:18 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 6,476 $184.31 $1,193,614.23
Disclosure

SEC source: 0001539838-26-000174 · wk-form4_1791407877.xml · nonDerivative · entry 2

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 766,218

F1 · shares: 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.

F4 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
October 05, 2026 Filed Oct 7, 2026 21:18 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 20,503 $183.17 $3,755,632.92
Disclosure

SEC source: 0001539838-26-000174 · wk-form4_1791407877.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 772,694

F1 · shares: 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 · price: 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 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
September 16, 2026 Filed Sep 17, 2026 20:03 UTC Diamondback Energy, Inc. FANG · Entity 1866 GiftCommon Stock 25,000 $0.00 $0.00
Disclosure

SEC source: 0001539838-26-000164 · wk-form4_1789675419.xml · nonDerivative · entry 6

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,257

F4 · shares: On September 16, 2026, all of the issuer's securities held by the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust were gifted to a community property account held by Mr. Meloy and his spouse.

Read SEC document
September 16, 2026 Filed Sep 17, 2026 20:03 UTC Diamondback Energy, Inc. FANG · Entity 1866 GiftCommon Stock 12,500 $0.00 $0.00
Disclosure

SEC source: 0001539838-26-000164 · wk-form4_1789675419.xml · nonDerivative · entry 5

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Grady Allen Meloy 2011 Trust

Disclosed balance after: 0

F4 · shares: On September 16, 2026, all of the issuer's securities held by the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust were gifted to a community property account held by Mr. Meloy and his spouse.

F3 · ownership.direct: Mr. Meloy is a trustee of each of the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust.

F3 · ownership.nature: Mr. Meloy is a trustee of each of the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust.

Read SEC document
September 16, 2026 Filed Sep 17, 2026 20:03 UTC Diamondback Energy, Inc. FANG · Entity 1866 GiftCommon Stock 12,500 $0.00 $0.00
Disclosure

SEC source: 0001539838-26-000164 · wk-form4_1789675419.xml · nonDerivative · entry 4

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Katy Evans Meloy 2011 Trust

Disclosed balance after: 0

F4 · shares: On September 16, 2026, all of the issuer's securities held by the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust were gifted to a community property account held by Mr. Meloy and his spouse.

F3 · ownership.direct: Mr. Meloy is a trustee of each of the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust.

F3 · ownership.nature: Mr. Meloy is a trustee of each of the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:03 UTC Diamondback Energy, Inc. FANG · Entity 1866 GiftCommon Stock 12,500 $0.00 $0.00
Disclosure

SEC source: 0001539838-26-000164 · wk-form4_1789675419.xml · nonDerivative · entry 3

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Grady Allen Meloy 2011 Trust

Disclosed balance after: 12,500

F1 · shares: On September 15, 2026, 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, gifted 12,500 shares to the Katy Evans Meloy 2011 Trust and 12,500 shares to the Grady Allen Meloy 2011 Trust.

F3 · ownership.direct: Mr. Meloy is a trustee of each of the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust.

F3 · ownership.nature: Mr. Meloy is a trustee of each of the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:03 UTC Diamondback Energy, Inc. FANG · Entity 1866 GiftCommon Stock 12,500 $0.00 $0.00
Disclosure

SEC source: 0001539838-26-000164 · wk-form4_1789675419.xml · nonDerivative · entry 2

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Katy Evans Meloy 2011 Trust

Disclosed balance after: 12,500

F1 · shares: On September 15, 2026, 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, gifted 12,500 shares to the Katy Evans Meloy 2011 Trust and 12,500 shares to the Grady Allen Meloy 2011 Trust.

F3 · ownership.direct: Mr. Meloy is a trustee of each of the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust.

F3 · ownership.nature: Mr. Meloy is a trustee of each of the Katy Evans Meloy 2011 Trust and the Grady Allen Meloy 2011 Trust.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:03 UTC Diamondback Energy, Inc. FANG · Entity 1866 GiftCommon Stock 25,000 $0.00 $0.00
Disclosure

SEC source: 0001539838-26-000164 · wk-form4_1789675419.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 793,197

F1 · shares: On September 15, 2026, 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, gifted 12,500 shares to the Katy Evans Meloy 2011 Trust and 12,500 shares to the Grady Allen Meloy 2011 Trust.

F2 · ownership.direct: 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.

F2 · ownership.nature: 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.

Read SEC document
August 03, 2026 Filed Aug 4, 2026 20:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 2,730 $199.44 $544,481.85
Disclosure

SEC source: 0001539838-26-000139 · wk-form4_1785873669.xml · nonDerivative · entry 4

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 818,197

F1 · shares: 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.

F6 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
August 03, 2026 Filed Aug 4, 2026 20:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 19,055 $198.74 $3,786,971.65
Disclosure

SEC source: 0001539838-26-000139 · wk-form4_1785873669.xml · nonDerivative · entry 3

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 820,927

F1 · shares: 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.

F5 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
August 03, 2026 Filed Aug 4, 2026 20:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 7,562 $197.91 $1,496,611.30
Disclosure

SEC source: 0001539838-26-000139 · wk-form4_1785873669.xml · nonDerivative · entry 2

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 839,982

F1 · shares: 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.

F4 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
August 03, 2026 Filed Aug 4, 2026 20:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 3,986 $197.06 $785,473.59
Disclosure

SEC source: 0001539838-26-000139 · wk-form4_1785873669.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 847,544

F1 · shares: 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 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
June 16, 2026 Filed Jun 17, 2026 20:18 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 4,049 $187.68 $759,900.12
Disclosure

SEC source: 0001333454-26-000003 · wk-form4_1781727477.xml · nonDerivative · entry 3

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 851,530

F1 · shares: 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.

F5 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $187.61 per share to $187.80 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
June 16, 2026 Filed Jun 17, 2026 20:18 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 64,747 $187.25 $12,124,057.04
Disclosure

SEC source: 0001333454-26-000003 · wk-form4_1781727477.xml · nonDerivative · entry 2

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 855,579

F1 · shares: 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.

F4 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $186.605 per share to $187.59 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
June 16, 2026 Filed Jun 17, 2026 20:18 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 14,538 $186.37 $2,709,374.37
Disclosure

SEC source: 0001333454-26-000003 · wk-form4_1781727477.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 920,326

F1 · shares: 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 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $185.60 per share to $186.60 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 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
May 20, 2026 Filed May 21, 2026 21:57 UTC Diamondback Energy, Inc. FANG · Entity 1866 GrantCommon Stock 982 $0.00 $0.00
Disclosure

SEC source: 0001539838-26-000109 · wk-form4_1779400634.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,257

F1 · shares: These securities are restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.01 per share, of the issuer. These restricted stock units were granted to Mr. Meloy as an annual non-employee director grant under the issuer's equity incentive plan and will vest on the earlier of the one-year anniversary of the date of grant and the date of the 2027 annual meeting of stockholders of the issuer.

Read SEC document
May 08, 2026 Filed May 11, 2026 20:09 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 3,909 $189.56 $740,996.29
Disclosure

SEC source: 0001539838-26-000079 · wk-form4_1778530178.xml · nonDerivative · entry 7

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 934,864

F1 · shares: 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.

F9 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
May 08, 2026 Filed May 11, 2026 20:09 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 3,545 $188.72 $669,004.96
Disclosure

SEC source: 0001539838-26-000079 · wk-form4_1778530178.xml · nonDerivative · entry 6

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 938,773

F1 · shares: 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.

F8 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
May 08, 2026 Filed May 11, 2026 20:09 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 403 $187.54 $75,576.85
Disclosure

SEC source: 0001539838-26-000079 · wk-form4_1778530178.xml · nonDerivative · entry 5

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 942,318

F1 · shares: 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.

F7 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
May 07, 2026 Filed May 11, 2026 20:09 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 2,887 $190.14 $548,934.18
Disclosure

SEC source: 0001539838-26-000079 · wk-form4_1778530178.xml · nonDerivative · entry 4

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 942,721

F1 · shares: 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.

F6 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
May 07, 2026 Filed May 11, 2026 20:09 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 2,492 $189.44 $472,080.74
Disclosure

SEC source: 0001539838-26-000079 · wk-form4_1778530178.xml · nonDerivative · entry 3

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 945,608

F1 · shares: 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.

F5 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
May 07, 2026 Filed May 11, 2026 20:09 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,636 $188.11 $307,755.32
Disclosure

SEC source: 0001539838-26-000079 · wk-form4_1778530178.xml · nonDerivative · entry 2

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 948,100

F1 · shares: 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.

F4 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
May 07, 2026 Filed May 11, 2026 20:09 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 842 $187.35 $157,749.37
Disclosure

SEC source: 0001539838-26-000079 · wk-form4_1778530178.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 949,736

F1 · shares: 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.

F2 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
April 07, 2026 Filed Apr 8, 2026 20:06 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,254 $198.49 $248,904.70
Disclosure

SEC source: 0001539838-26-000065 · wk-form4_1775678792.xml · nonDerivative · entry 7

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 950,578

F1 · shares: 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.

F9 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
April 07, 2026 Filed Apr 8, 2026 20:06 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 2,348 $197.83 $464,501.32
Disclosure

SEC source: 0001539838-26-000065 · wk-form4_1775678792.xml · nonDerivative · entry 6

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 951,832

F1 · shares: 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.

F8 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
April 07, 2026 Filed Apr 8, 2026 20:06 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 2,370 $196.59 $465,920.67
Disclosure

SEC source: 0001539838-26-000065 · wk-form4_1775678792.xml · nonDerivative · entry 5

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 954,180

F1 · shares: 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.

F7 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
April 07, 2026 Filed Apr 8, 2026 20:06 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,885 $195.55 $368,612.50
Disclosure

SEC source: 0001539838-26-000065 · wk-form4_1775678792.xml · nonDerivative · entry 4

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 956,550

F1 · shares: 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.

F6 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
April 06, 2026 Filed Apr 8, 2026 20:06 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 185 $195.18 $36,107.50
Disclosure

SEC source: 0001539838-26-000065 · wk-form4_1775678792.xml · nonDerivative · entry 3

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 958,435

F1 · shares: 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.

F5 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
April 06, 2026 Filed Apr 8, 2026 20:06 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 5,356 $194.15 $1,039,886.15
Disclosure

SEC source: 0001539838-26-000065 · wk-form4_1775678792.xml · nonDerivative · entry 2

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 958,620

F1 · shares: 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.

F4 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
April 06, 2026 Filed Apr 8, 2026 20:06 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 2,316 $193.32 $447,735.37
Disclosure

SEC source: 0001539838-26-000065 · wk-form4_1775678792.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 963,976

F1 · shares: 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.

F2 · price: 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 10, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,455 $182.03 $264,854.52
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 13

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 966,292

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F15 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $181.695 per share to $182.515 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 10, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,329 $181.15 $240,747.15
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 12

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 967,747

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F14 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $180.69 per share to $181.655 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 10, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,075 $180.25 $193,765.53
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 11

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 969,076

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F13 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $179.615 per share to $180.57 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 10, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,746 $178.82 $312,223.04
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 10

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 970,151

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F12 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $178.57 per share to $179.53 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 10, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,686 $178.10 $300,272.89
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 9

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 971,897

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F11 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $177.54 per share to $178.525 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 10, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 566 $177.09 $100,235.32
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 8

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 973,583

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F10 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $176.505 per share to $177.42 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 09, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 108 $186.16 $20,104.91
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 7

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 974,149

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F9 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $186.05 per share to $186.31 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 09, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 462 $185.40 $85,656.14
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 6

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 974,257

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F8 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $185.015 per share to $186.005 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 09, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,465 $184.46 $270,231.12
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 5

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 974,719

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F7 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $184.010 per share to $184.945 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 09, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 2,876 $183.43 $527,545.26
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 4

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 976,184

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F6 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $183.00 per share to $183.99 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 09, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 1,849 $182.67 $337,751.47
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 3

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 979,060

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F5 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $181.975 per share to $182.970 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 09, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 709 $181.43 $128,636.00
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 2

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 980,909

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F4 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $180.975 per share to $181.970 per share, inclusive.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

Read SEC document
March 09, 2026 Filed Mar 11, 2026 20:11 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 388 $180.45 $70,013.20
Disclosure

SEC source: 0001539838-26-000046 · wk-form4_1773259884.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 981,618

F1 · shares: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $179.915 per share to $180.805 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 15.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

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February 03, 2026 Filed Feb 4, 2026 21:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 18,698 $162.49 $3,038,314.68
Disclosure

SEC source: 0001333454-26-000002 · wk-form4_1770238870.xml · nonDerivative · entry 4

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 982,006

F1 · shares: 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.

F6 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $162.00 per share to $162.885 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

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February 03, 2026 Filed Feb 4, 2026 21:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 5,597 $161.42 $903,469.98
Disclosure

SEC source: 0001333454-26-000002 · wk-form4_1770238870.xml · nonDerivative · entry 3

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 1,000,704

F1 · shares: 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.

F5 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $161.00 per share to $161.90 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

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February 03, 2026 Filed Feb 4, 2026 21:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 36,310 $160.37 $5,822,972.97
Disclosure

SEC source: 0001333454-26-000002 · wk-form4_1770238870.xml · nonDerivative · entry 2

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 1,006,301

F1 · shares: 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.

F4 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $160.00 per share to $160.99 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

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February 02, 2026 Filed Feb 4, 2026 21:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 2,200 $160.17 $352,368.50
Disclosure

SEC source: 0001333454-26-000002 · wk-form4_1770238870.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 1,042,611

F1 · shares: 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.

F2 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $160.00 per share to $160.43 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

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December 08, 2025 Filed Dec 10, 2025 21:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 53 $160.13 $8,486.95
Disclosure

SEC source: 0001333454-25-000010 · wk-form4_1765400463.xml · nonDerivative · entry 1

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 1,044,811

F1 · shares: 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.

F2 · price: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $160.07 per share to $160.19 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.

F3 · ownership.direct: 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.

F3 · ownership.nature: 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.

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December 04, 2025 Filed Dec 8, 2025 21:01 UTC Diamondback Energy, Inc. FANG · Entity 1866 SaleCommon Stock 377,911 $138.61 $52,382,243.71
Disclosure

SEC source: 0001333454-25-000007 · wk-form4_1765227690.xml · nonDerivative · entry 2

Meloy Charles Alvin · CIK 0001333454 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Wolfrock Energy, LLC

Disclosed balance after: 1,044,864

F3 · kind: Represents a transfer of limited partnership interests in CS Ventures Ltd., which is the sole member of Wolfrock Energy LLC, to trusts for the benefit of the Reporting Person's children. No shares of the Issuer's common stock were disposed of in connection with this transfer.

F2 · ownership.direct: 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.

F2 · ownership.nature: 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.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.