Diamondback CAO sells 5,000 shares in open trade

Diamondback Energy, Inc. reported that Chief Accounting Officer and Executive Vice President Teresa L. Dick completed an open-market sale of Common Stock.

Filing Impact

(Very High)

Filing Sentiment

(Negative)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

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Form Type

Rhea-AI Filing Summary

Diamondback Energy, Inc. reported that Chief Accounting Officer and Executive Vice President Teresa L. Dick completed an open-market sale of Common Stock. She sold 5,000 shares on May 19, 2026 at a price of $207.00 per share. After this transaction, she directly holds 92,755 shares of Diamondback Energy common stock, indicating she retains a substantial equity position in the company despite the sale.

Insider Trade Summary

Net Seller: 5,000 shares

Net Sell 1 txn

Insider Dick Teresa L.

Role CAO, Exec. VP, Assist. Sec.

Sold 5,000 shs ($1.03M)

Type	Security	Shares	Price	Value
Sale	Common Stock	5,000	$207.00	$1.03M

Holdings After Transaction: Common Stock — 92,755 shares (Direct)

Key Figures

Shares sold: 5,000 shares Sale price: $207.00 per share Shares held after sale: 92,755 shares

3 metrics

Shares sold 5,000 shares Open-market sale of Common Stock on May 19, 2026

Sale price $207.00 per share Price for 5,000 shares of Common Stock sold

Shares held after sale 92,755 shares Direct ownership following the reported transaction

Key Terms

open-market sale, Common Stock, non-derivative, direct ownership, +1 more

5 terms

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

non-derivative financial

"transaction_type: "non-derivative""

direct ownership financial

"ownership_type: "direct" and ownership_code: "D""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

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

What insider transaction did Teresa L. Dick report for Diamondback Energy (FANG)?

Teresa L. Dick reported an open-market sale of Diamondback Energy Common Stock. As CAO and Executive Vice President, she sold 5,000 shares in a single transaction, providing transparency about changes in her direct equity holdings in the company.

How many Diamondback Energy (FANG) shares did Teresa L. Dick sell and at what price?

She sold 5,000 shares of Diamondback Energy Common Stock at a price of $207.00 per share. This reflects an open-market transaction, meaning the trade occurred on the public market rather than through a private agreement or equity award settlement.

How many Diamondback Energy (FANG) shares does Teresa L. Dick own after the reported sale?

Following the sale, Teresa L. Dick directly owns 92,755 shares of Diamondback Energy Common Stock. This post-transaction balance shows that, despite selling a block of shares, she continues to maintain a sizable direct ownership stake in the company.

Was the Diamondback Energy (FANG) transaction by Teresa L. Dick a derivative exercise?

No, the transaction involved non-derivative Diamondback Energy Common Stock. The Form 4 classifies it as an open-market sale, with no associated options or other derivative securities exercised or converted in connection with this specific transaction.

Is Teresa L. Dick’s ownership in Diamondback Energy (FANG) direct or indirect after the sale?

Her reported ownership after the sale is classified as direct. The Form 4 states that 92,755 shares are held with a direct ownership code, indicating these holdings are in her own name rather than through an intermediary entity or trust.

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

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Accepted by SEC EDGAR 05/21/2026 - 05:57 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Dick Teresa L.

(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)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	CAO, Exec. VP, Assist. Sec.

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/19/2026		S		5,000	D	$207	92,755	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Teresa L. Dick	05/21/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR