Diamondback Energy: $6.14M share sale proposed

The notice identifies Wolfrock Energy, L.L.C. as seller and Charles A. Meloy as the director whose account is named.

Rhea-AI Filing Summary

Diamondback Energy, Inc. (FANG) is named in a notice covering the proposed sale of 33,333 common shares for the account of Charles A. Meloy, a director. The notice says all shares will be sold by Wolfrock Energy, L.L.C.; their aggregate market value is $6,135,938.64, and the approximate sale date is October 5, 2026. The sale is in connection with a selling plan dated March 17, 2026, intended to comply with Rule 10b5-1(c).

Key Figures

Proposed shares to be sold: 33,333 shares Aggregate market value: $6,135,938.64 Shares outstanding: 280,024,353 shares +3 more

6 metrics

Proposed shares to be sold 33,333 shares Diamondback Energy common stock

Aggregate market value $6,135,938.64 Securities proposed for sale

Shares outstanding 280,024,353 shares Diamondback Energy common stock

Shares sold in prior three months 33,333 shares Wolfrock Energy, L.L.C., August 3, 2026

Gross proceeds $6,613,537.20 Wolfrock Energy, L.L.C. sale on August 3, 2026

Selling plan date March 17, 2026 Plan intended to comply with Rule 10b5-1(c)

Key Terms

Rule 10b5-1(c), Rule 144, aggregate market value

3 terms

Rule 10b5-1(c) regulatory

"intended to comply with Rule 10b5-1(c)"

Rule 10b5-1(c) is an SEC guideline that lets company insiders set up a written, pre-planned schedule to buy or sell their company stock when they are not in possession of material, nonpublic information. For investors, it matters because such plans can reduce the appearance of insider trading by separating decisions from inside knowledge—like putting your trades on autopilot—while also requiring scrutiny since pre-planned trades can still affect market confidence and share value.

Rule 144 regulatory

"paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

aggregate market value financial

"aggregate market value of securities to be sold"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

How many FANG shares are included in the proposed sale?

The notice covers a proposed sale of 33,333 Diamondback Energy common shares, with an aggregate market value of $6,135,938.64. It names Charles A. Meloy, a director, as the account person and says all shares will be sold by Wolfrock Energy, L.L.C.

What recent FANG share sale does the notice list for Wolfrock Energy?

The notice lists a sale of 33,333 Diamondback Energy common shares by Wolfrock Energy, L.L.C. on August 3, 2026, for gross proceeds of $6,613,537.20.

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

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Available on EDGAR 10/05/2026 - 06:27 PM Accepted by SEC EDGAR 10/05/2026 - 06:27 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001333454
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Diamondback Energy, Inc.
SEC File Number	001-35700
Address of Issuer	500 West Texas Ave. Suite 100 Midland TEXAS 79701
Phone	1-432-221-7400
Name of Person for Whose Account the Securities are To Be Sold	Charles A. Meloy
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Goldman Sachs & Co. LLC 200 West Street New York NY 10282	33333	6135938.64	280024353	10/05/2026	NASD

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	09/10/2024	Acquired as consideration of merger or acquisition	Issuer			33333	09/10/2024	Securities

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Wolfrock Energy, L.L.C. 500 West Texas Ave. Suite 100 Midland TX 79701	Common Stock	08/03/2026	33333	6613537.2

144: Remarks and Signature

Remarks	The sales of shares set forth herein are made in connection with a selling plan dated 3/17/2026 that is intended to comply with Rule 10b5-1(c). All shares to be sold by Wolfrock Energy, L.L.C.
Date of Notice	10/05/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/17/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Goldman Sachs & Co. LLC on behalf of Charles A. Meloy
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)