Diamondback EVP has 682 shares withheld for tax

Diamondback Energy’s executive vice president had shares withheld for tax on RSU vesting, leaving him with 23,889 directly held shares.

Rhea-AI Filing Summary

Diamondback Energy, Inc. (FANG) reported that executive vice president and chief engineer Albert Barkmann had 682 shares of common stock withheld on September 10, 2026 to satisfy tax withholding obligations tied to the vesting and settlement of a time-based RSU grant. The shares were valued at $202.63 per share, based on the September 9, 2026 closing price. After this tax-withholding transaction, Barkmann directly holds 23,889 shares of Diamondback common stock. No Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Tax Withholding: 682 shares

Tax Withholding 1 txn

Insider Barkmann Albert

Role Exec. VP and Chief Engineer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	682	$202.63	$138K

Holdings After Transaction: Common Stock — 23,889 shares (Direct)

Footnotes (1)

1. F1. The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement on September 10, 2026 of the second tranche of the time-based restricted stock units granted to the reporting person on September 10, 2024. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on September 9, 2026.

Key Figures

Shares withheld for tax: 682 shares Per-share valuation for withholding: $202.63 per share Shares held after transaction: 23,889 shares +2 more

5 metrics

Shares withheld for tax 682 shares Withheld on September 10, 2026 to satisfy tax withholding on RSU vesting

Per-share valuation for withholding $202.63 per share Based on closing price of common stock on September 9, 2026

Shares held after transaction 23,889 shares Directly held by Albert Barkmann following the September 10, 2026 transaction

RSU grant date September 10, 2024 Grant date of time-based restricted stock units whose second tranche vested

RSU vesting and settlement date September 10, 2026 Date second tranche of time-based RSUs vested and settled

Key Terms

time-based restricted stock units, vesting and settlement, tax withholding obligations, withheld shares

4 terms

time-based restricted stock units financial

"the vesting and settlement on September 10, 2026 of the second tranche of the time-based restricted stock units granted"

Time-based restricted stock units are a form of employee compensation where individuals are granted company shares that are earned over a set period, often as a reward for staying with the company. These shares typically become fully owned and transferable only after passing specific time milestones, encouraging long-term commitment. For investors, they highlight a company's focus on employee retention and can influence future stock supply and company stability.

vesting and settlement financial

"to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement on September 10, 2026"

tax withholding obligations financial

"to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement"

withheld shares financial

"The issuer withheld shares of common stock that would have otherwise been issuable"

FAQ

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

What transaction did Diamondback Energy (FANG) report for Albert Barkmann?

Diamondback Energy reported that executive vice president Albert Barkmann had 682 shares of common stock withheld on September 10, 2026 to cover tax withholding obligations related to the vesting and settlement of time-based restricted stock units.

Was the Form 4 transaction for FANG a market sale or tax withholding?

The Form 4 for FANG shows a tax-withholding transaction, not an open-market sale. 682 shares of common stock were withheld by Diamondback Energy to satisfy its tax withholding obligations upon RSU vesting.

At what price were the withheld FANG shares valued in Barkmann’s Form 4?

The 682 withheld shares were valued at $202.63 per share, determined using the closing price of Diamondback Energy’s common stock on September 9, 2026, as disclosed in the footnote.

How many Diamondback Energy (FANG) shares does Albert Barkmann hold after this filing?

After the reported tax-withholding transaction, Albert Barkmann directly holds 23,889 shares of Diamondback Energy common stock, according to the Form 4 disclosure.

Was a Rule 10b5-1 trading plan involved in this FANG Form 4 transaction?

No. The filing indicates no Rule 10b5-1 trading plan for this transaction; the document-level checkbox for such a plan is not marked.

What RSU grant triggered the tax-withholding in Diamondback Energy’s Form 4?

The tax-withholding arose from the second tranche of time-based restricted stock units granted to Albert Barkmann on September 10, 2024, which vested and settled on September 10, 2026.

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

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Available on EDGAR 09/14/2026 - 04:04 PM Accepted by SEC EDGAR 09/14/2026 - 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^*

Barkmann Albert

(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)
	Exec. VP and Chief Engineer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

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	09/10/2026		F		682(1)	D	$202.63	23,889	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:

1. The issuer withheld shares of common stock that would have otherwise been issuable to the reporting person to satisfy the issuer's tax withholding obligations in connection with the vesting and settlement on September 10, 2026 of the second tranche of the time-based restricted stock units granted to the reporting person on September 10, 2024. The number of shares of common stock withheld was determined based on the closing price per share of the issuer's common stock on September 9, 2026.

Remarks:

	/s/ Matt Zmigrosky, as attorney-in-fact for Albert Barkmann	09/14/2026
	** 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)