Key facts
- This page summarizes Mark Lawrence Plaumann's Form 4 filing for Diamondback Energy, Inc. (FANG).
- 1 reported transaction and 0 derivative rows are listed below.
- Accepted by SEC: 24 Aug 2026, 16:01.
Mark Lawrence Plaumann - 21 Aug 2026 Form 4 Insider Report for Diamondback Energy, Inc. (FANG)
- Reporting relationship
- Director
- Issuer ticker
- FANG
- Reported as of
- 21 Aug 2026
- Net transaction value
- -$210,577
- SEC form
- 4
- Accepted by SEC
- 24 Aug 2026, 16:01:33 UTC
- Prior SEC filing
- 10 Jun 2026
- Next SEC filing
- 17 Sep 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Matt Zmigrosky, as attorney-in-fact for Mark L. Plaumann
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Mark Lawrence Plaumann filed Form 4 for Diamondback Energy, Inc. (FANG) on 24 Aug 2026.
Change
- Previous filing in this sequence was filed on 10 Jun 2026.
- Current net transaction value: -$210,577.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001290795
Primary reporting owner
Plaumann Mark Lawrence
- Relationship
- Director
- Address
- 500 WEST TEXAS AVENUE, SUITE 100, MIDLAND
- Signature
- /s/ Matt Zmigrosky, as attorney-in-fact for Mark L. Plaumann
- Signature date
- 24 Aug 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
FANG
transaction
Common Stock
Sale
- Transaction value
- $210,577
- Shares
- -1,000
- Change %
- -7.4%
- Price
- $210.58
- Shares after
- 12,437
- Date
- 21 Aug 2026
- Ownership
- Direct
* marks a reported price that did not pass the local price check.