Diamondback (FANG) affiliate sells 20,899 shares

Diamondback Energy reported a Form 144 notice by an affiliate proposing an equity sale.

Rhea-AI Filing Summary

Diamondback Energy reported a Form 144 notice by an affiliate proposing an equity sale. The filing lists restricted stock units (RSU/PSU) dated 03/01/2025 and shows that an affiliate, Matt Zmigrosky, sold 20,899 shares on 03/13/2026. The filing identifies the broker as Charles Schwab & Co., Inc.

Insights

Securities Compliance Analyst

Form 144 records an affiliate's proposed/actual resale of equity tied to RSU/PSU awards.

The notice lists RSU/PSU grants dated 03/01/2025 and registers a sale reported as 20,899 shares sold on 03/13/2026

Filing names Charles Schwab & Co., Inc. as the broker; timing and method follow typical resale disclosure requirements. Subsequent filings could show additional details if the planned resale was completed or part of a larger program.

FAQ

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

What does Diamondback Energy's Form 144 filed for FANG show?

The Form 144 lists RSU/PSU awards dated 03/01/2025 and reports an affiliate sale of 20,899 shares on 03/13/2026. It names Charles Schwab & Co., Inc. as the broker.

Who is the selling party reported on the Form 144 for FANG?

The filing identifies Matt Zmigrosky as the reporting affiliate, with an address in Midland, Texas. The record shows he sold 20,899 shares on 03/13/2026.

What security type is referenced in the Form 144 for Diamondback Energy (FANG)?

The Form 144 references equity compensation in the form of RSU/PSU dated 03/01/2025. The resale activity reported relates to those equity awards.

Which broker is named on the Form 144 for the reported sale?

The broker listed is Charles Schwab & Co., Inc., located at 3000 Schwab Way, Westlake, TX, as shown on the filing.

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

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Accepted by SEC EDGAR 03/18/2026 - 04:03 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	0001767328
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 AVENUE SUITE 100 MIDLAND TEXAS 79701
Phone	432-221-7400
Name of Person for Whose Account the Securities are To Be Sold	Zmigrosky Matt
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	Officer

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	Charles Schwab & Co., Inc. 3000 Schwab Way Westlake TX 76262	4101	781293.00	282078989	03/18/2026	NASDAQ

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	03/01/2025	RSU / PSU	Diamondback Energy, Inc.			4101	03/01/2025	Equity Compensation

* 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
Matt Zmigrosky 500 WEST TEXAS AVENUE SUITE 100 MIDLAND TX 79701	Diamondback Energy, Inc.	03/13/2026	20899	3761877.00

144: Remarks and Signature

Remarks
Date of Notice	03/18/2026
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	Matt Zmigrosky
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)