Diamondback Energy Inc (FANG) Form 4 Filed by Albert Barkmann, Sep 14, 2026

SEC Form 4 · No Market Transaction

Tax Withholding

Shares withheld for tax obligations.

Reporting Owner

Albert Barkmann

TXN 2026-09-10 · FILED 2026-09-14

Equity Position 23.9K sh 24,571 → 23,889

Equity Change -2.8% shares held after vs before

Filing Lag 2 business days within 2-day SEC deadline

Form 4 · Statement of Changes in Beneficial Ownership

Diamondback Energy Inc

FANG CIK 0001539838

Reporting Owner

Name	Relationship
Albert Barkmann CIK 0002012976	VP

Albert Barkmann at Diamondback Energy Inc Full insider history

Bought (12 mo) —

Sold (12 mo) $1,343,713

More from this insider at Diamondback Energy Inc

Non-Derivative Securities Transactions

Title	Date	Type	Shares	Price	Net Total	Post-Txn	Ownership
Common StockF1	2026-09-10	F - Tax Payment	682 D	$202.63	-$138,194	23,889	Direct

Footnotes (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. Show more

Institutional Holders

Largest by reported value

5%+ Holders · 13D/G 3 filers

Latest Schedule 13D/G per filer; stakes the filer reported closed are left out.

Other insiders at Diamondback Energy Inc

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