4Filing Date: Aug 24, 2026
Diamondback Energy (FANG)
Statement of Changes in Beneficial Ownership
View SEC Filing
ACC: 0001539838-26-000152
Total Value$210.6K
Trades1
Insiders1
Transaction Details
Plaumann Mark Lawrence
Director·Direct
Sell · Dispose
Common Stock
Shares-1.00K
Price$210.58
Total Value$210.6K
Shares Owned After12.44K
Transaction DateAug 21, 2026
Post-Transaction Holdings
Plaumann Mark Lawrence · Director
| Security | Shares | Change |
|---|---|---|
| Common Stock | 12.44K | -1.00K (-7.44%) |
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-08-21
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: Diamondback Energy, Inc. (FANG)
CIK: 0001539838
--- Reporting Owner ---
Name: Plaumann Mark Lawrence
CIK: 0001290795
Role: Director
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-08-21 | Code: S (Open market sale)
Shares: -1,000 | Price: $210.58
Total Value: $210,576.60
Shares Owned After: 12,437 | Ownership: D (Direct)
--- Signature ---
/s/ /s/ Matt Zmigrosky, as attorney-in-fact for Mark L. Plaumann (2026-08-24)