Diamondback CEO sells 15,000 shares in open trade

Diamondback Energy, Inc. Chief Executive Officer Matthew Kaes Van't Hof sold a total of 15,000 shares of Common Stock in open-market transactions on June 3, 2026.

Rhea-AI Filing Summary

Diamondback Energy, Inc. Chief Executive Officer Matthew Kaes Van't Hof sold a total of 15,000 shares of Common Stock in open-market transactions on June 3, 2026. Shares were sold in two blocks at prices of $210.00 and $205.00 per share.

After these sales, he continues to directly hold more than 133,000 Diamondback shares, indicating he retains a substantial equity stake in the company.

Insights

Equity compensation and insider-trading analyst

CEO executes modest open-market sale while retaining a large stake.

Diamondback Energy’s CEO, Matthew Kaes Van't Hof, sold 15,000 shares of Common Stock in open-market trades at prices of $210.00 and $205.00 per share on June 3, 2026. The transactions are classified as standard open-market sales (code S), not derivative exercises or gifts.

Post-transaction ownership entries in the data show he still directly holds over 133,000 shares, so the sale represents a minority portion of his visible equity position. With no 10b5-1 plan, tax, or structural footnotes disclosed here, the sales appear as routine portfolio management rather than a transformative event. From an investment-thesis standpoint, this looks like a neutral, informational update on insider activity.

Insider Trade Summary

Net Seller: 15,000 shares

Net Sell 2 txns

Insider Van't Hof Matthew Kaes

Role Chief Executive Officer

Sold 15,000 shs ($3.13M)

Type	Security	Shares	Price	Value
Sale	Common Stock	5,000	$205.00	$1.02M
Sale	Common Stock	10,000	$210.00	$2.10M

Holdings After Transaction: Common Stock — 133,614 shares (Direct)

Key Figures

Shares sold total: 15,000 shares First sale price: $210.00 per share Second sale price: $205.00 per share +3 more

6 metrics

Shares sold total 15,000 shares Open-market sales on June 3, 2026

First sale price $210.00 per share 10,000 shares of Common Stock sold

Second sale price $205.00 per share 5,000 shares of Common Stock sold

Shares sold in first trade 10,000 shares Common Stock, code S open-market sale

Shares sold in second trade 5,000 shares Common Stock, code S open-market sale

Post-sale direct holdings (minimum) 133,614 shares Common Stock directly owned after reported trades

Key Terms

Common Stock, open-market sale, transaction code S, Form 4, +1 more

5 terms

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.

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.

transaction code S regulatory

"transaction_code: "S" with description "Sale in open market or private transaction""

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.

direct ownership financial

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

FAQ

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

What did Diamondback Energy (FANG) CEO sell in this Form 4?

Diamondback Energy CEO Matthew Kaes Van't Hof sold 15,000 shares of Common Stock. The transactions were executed as open-market sales on June 3, 2026, reflecting routine insider activity rather than option exercises or gifts, and still leaving him with a sizable remaining stake.

At what prices did the Diamondback Energy (FANG) CEO sell shares?

The CEO sold 10,000 shares at $210.00 per share and 5,000 shares at $205.00 per share. Both trades were classified as open-market sales, providing insight into the price levels at which the insider chose to reduce a small portion of his holdings.

How many Diamondback Energy (FANG) shares did the CEO retain after the sale?

After selling 15,000 shares, data in the filing show the CEO continues to directly hold more than 133,000 Diamondback shares. This indicates the transactions reduced, but did not materially alter, his overall equity exposure to the company.

Were the Diamondback Energy (FANG) CEO transactions option exercises or open-market trades?

The transactions were reported with code S, indicating open-market or private sales of Common Stock, not option exercises or derivative conversions. There are no derivative positions listed in the accompanying derivativeSummary, underscoring that these were straightforward share sales.

Does the Diamondback Energy (FANG) CEO Form 4 indicate any pre-planned 10b5-1 trading plan?

The available data and footnotes do not state that these sales occurred under a Rule 10b5-1 trading plan. Without such a note, the trades appear as discretionary open-market sales, although no additional context on timing motives is provided in the disclosed information.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 06/04/2026 - 04:03 PM Learn about SEC filing dates

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^*

Van't Hof Matthew Kaes

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/03/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/03/2026		S		5,000	D	$205	143,614	D
Common Stock	06/03/2026		S		10,000	D	$210	133,614	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Matthew Kaes Van't Hof	06/04/2026
	** 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)