Notice of Proposed Sale · 144
Diamondback Energy, Inc.
FANGNASDAQEQUITYCurrent
Notice of Proposed Sale
Structured filing — 144
primary_doc.xml
Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.
Proposed-sale notice
- Issuer
- Diamondback Energy, Inc.
- Issuer CIK
- 0001539838
- SEC file number
- 001-35700
- Phone
- 432-221-7400
- Person for whose account securities are to be sold
- Plaumann Mark Lawrence
- Relationships to issuer
- Director
- Street
- 500 WEST TEXAS AVENUE
- Street (continued)
- SUITE 100
- City
- MIDLAND
- State / country code
- TX
- Postal code
- 79701
Securities proposed for sale
| Security | Proposed units | Aggregate market value | Units outstanding | Approximate sale date | Exchange | Broker / market maker |
|---|---|---|---|---|---|---|
| Common | 1,000 | 210,577.00 | 280,024,353 | 08/21/2026 | NASDAQ | Charles Schwab & Co., Inc. |
Broker / market maker — proposed row 1, entry 1
- Name
- Charles Schwab & Co., Inc.
- Street
- 3000 Schwab Way
- City
- Westlake
- State / country code
- TX
- Postal code
- 76262
Acquisition of securities to be sold
| Security | Acquired | Nature of acquisition | Acquired from | Amount acquired | Gift transaction | Payment date | Nature of payment |
|---|---|---|---|---|---|---|---|
| Common | 07/01/2018 | Restricted Stock Lapse | Diamondback Energy, Inc. | 100 | N | 07/01/2018 | Equity Compensation |
| Common | 06/06/2019 | Restricted Stock Lapse | Diamondback Energy, Inc. | 787 | N | 06/06/2019 | Equity Compensation |
| Common | 06/03/2020 | Restricted Stock Lapse | Diamondback Energy, Inc. | 113 | N | 06/03/2020 | Equity Compensation |
Sales reported in the preceding three months
| Seller | Security | Sale date | Amount sold | Gross proceeds |
|---|---|---|---|---|
| MARK LAWRENCE PLAUMANN | Diamondback Energy, Inc. | 06/09/2026 | 500 | 98,250.00 |
Seller — prior-sale row 1, entry 1
- Name
- MARK LAWRENCE PLAUMANN
- Street
- 500 WEST TEXAS AVENUE
- Street (continued)
- SUITE 100
- City
- MIDLAND
- State / country code
- TX
- Postal code
- 79701
Prior-sale reporting
- Nothing to report for the preceding three months
- N
Notice signature
- Notice date
- 08/21/2026
- Signed
- MARK LAWRENCE PLAUMANN
Company context
Diamondback is an independent oil and natural gas company headquartered in Midland, Texas focused on the acquisition, development, exploration and exploitation of unconventional, onshore oil and natural gas reserves primarily in the Permian Basin in West Texas. For more information, please visit www.diamondbackenergy.com.