Mark Lawrence Plaumann Receives Stock Award at Diamondback Energy Inc (FANG) — SEC Form 4, May 21, 2026

SEC Form 4 · No Market Transaction

Stock Award

Compensation grant — no market purchase or sale.

Reporting Owner

Mark Lawrence Plaumann

Director

TXN 2026-05-20 · FILED 2026-05-21

Equity Position 13.9K sh 12,955 → 13,937

Equity Change +7.6% shares held after vs before

Filing Lag 1 business day within 2-day SEC deadline

Form 4 · Statement of Changes in Beneficial Ownership

Diamondback Energy Inc

FANG CIK 0001539838

Reporting Owner

Name	Relationship
Mark Lawrence Plaumann CIK 0001290795	Director

Mark Lawrence Plaumann at Diamondback Energy Inc Full insider history

Bought (12 mo) —

Sold (12 mo) $308,827

More from this insider at Diamondback Energy Inc

Non-Derivative Securities Transactions

Title	Date	Type	Shares	Price	Net Total	Post-Txn	Ownership
Common StockF1 F2	2026-05-20	A - Award/Grant	982 A	$0.00	—	13,937	Direct

Footnotes (2)

F1: These securities are restricted stock units, each representing a contingent right to receive one share of common stock, par value $0.01 per share, of the issuer. These restricted stock units were granted to Mr. Plaumann as an annual non-employee director grant under the issuer's equity incentive plan and will vest on the earlier of the one-year anniversary of the date of grant and the date of the 2027 annual meeting of stockholders of the issuer. Show more
F2: Reflects the transfer of 7,688 shares of Common Stock in a transaction exempt from reporting pursuant to Rule 16a-13. 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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