Diamondback Energy, Inc.
FANG- Exchange
- Nasdaq
- Industry
- Crude Petroleum & Natural Gas
- SEC CIK
- 0001539838
In the last 90 days, Diamondback Energy, Inc. insiders filed 0 open-market purchases and 11 sales; 1,196 institutions reported holding it in 13F filings for Q2 2026, worth $35.4B in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Diamondback Energy, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 11 filings
- 9 insiders, $1.89B in total
- Insiders trading
- 9
- Net value
- −$1.89B
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Diamondback Energy, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Greth Lyndal | 10% Owner | 64,957,047 | Sep 17, 2026 | 7 |
| SGF FANG Holdings, LP | 10% Owner | 64,957,047 | Sep 17, 2026 | 7 |
| Zmigrosky Matt | EVP, Chief Legal and Admin Off | 36,705 | Sep 17, 2026 | 10 |
| Dick Teresa L. | EVP Accounting, Assist. Sec. | 75,755 | Sep 17, 2026 | 9 |
| Meloy Charles Alvin | Director | 28,257 | Sep 17, 2026 | 11 |
| Stice Travis D. | Director | 49,727 | Sep 14, 2026 | 5 |
| Barkmann Albert | Exec. VP and Chief Engineer | 23,889 | Sep 14, 2026 | 4 |
| Van't Hof Matthew Kaes | Chief Executive Officer | 115,940 | Aug 24, 2026 | 8 |
| Wesson Daniel N | Exec. VP & COO | 70,789 | Aug 24, 2026 | 5 |
| Plaumann Mark Lawrence | Director | 12,437 | Aug 24, 2026 | 3 |
| Thompson Jere W III | CFO, Executive VP | 18,475 | Aug 17, 2026 | 6 |
| Holderness Darin G | Director | 2,798 | May 21, 2026 | 1 |
| Reeves Robert K | Director | 6,066 | May 21, 2026 | 1 |
| West Steven E | Director | 5,466 | May 21, 2026 | 2 |
| Trent Melanie Montague | Director | 15,039 | May 21, 2026 | 1 |
| Klein Rebecca A | Director | 6,129 | May 21, 2026 | 1 |
| Robertson Lance W | Director | 9,999 | May 21, 2026 | 1 |
| Mains Stephanie K. | Director | 11,635 | May 21, 2026 | 1 |
| Brooks Vincent K | Director | 11,635Indirect | May 21, 2026 | 1 |
| Tsuru Frank D. | Director | 8,129 | May 21, 2026 | 1 |
| McAllaster Chad | EVP-Operations | 5,889 | Mar 3, 2026 | 1 |
| Autry Stephens Management Trust | 10% Owner | 31,947,366Indirect | Sep 24, 2024 | 0 |
| Endeavor Manager, LLC | 10% Owner | 31,947,366Indirect | Sep 24, 2024 | 0 |
| Stephens Family Trust #2 | 10% Owner | 31,947,366Indirect | Sep 24, 2024 | 0 |
| Stephens Family Trust | 10% Owner | 31,947,366Indirect | Sep 24, 2024 | 0 |
| SFT 2 Holdings, LLC | 10% Owner | 31,947,366Indirect | Sep 24, 2024 | 0 |
| SFT 1 Holdings, LLC | 10% Owner | 31,947,366Indirect | Sep 24, 2024 | 0 |
| SFT Management, LLC | 10% Owner | 31,947,366Indirect | Sep 24, 2024 | 0 |
| ACS Capital Management, LLC | 10% Owner | 31,947,366Indirect | Sep 24, 2024 | 0 |
| ACS Capital Holdings, LP | 10% Owner | 31,947,366Indirect | Sep 24, 2024 | 0 |
| Houston David L | Director | 12,600 | Jun 10, 2024 | 0 |
| Soliman Jennifer | Exec. VP and Chief HR Officer | 10,989 | Jan 12, 2023 | 0 |
| Cross Michael P | Director | 13,538Indirect | Jun 13, 2022 | 0 |
| Hawkins Thomas F. | Exec. VP - Special Projects | 13,795 | Mar 3, 2022 | 0 |
| Pantermuehl Russell | Exec. VP & Chief Engineer | 123,419 | Dec 9, 2021 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 10, 2026 (view filing) | Jun 9 | 1 day | Plaumann Mark LawrenceDirector | SSale | −500 | $196.50 | −$98.3K | −3.6%13.4K after | |
| Jun 17, 2026 (view filing) | Jun 16 | 1 day | Meloy Charles AlvinDirector | SSale | −83.3K | $187.12 | −$15.6M | −8.9%851.5K after | 3 lots10b5-1 |
| Aug 4, 2026 (view filing)4:01 PM ET | Aug 3 | 1 day | Meloy Charles AlvinDirector | SSale | −33.3K | $198.41 | −$6.61M | −3.9%818.2K after | 4 lots10b5-1 |
| Aug 12, 2026 (view filing)4:01 PM ET | Aug 11 | 1 day | Van't Hof Matthew KaesChief Executive Officer | SSale | −5.00K | $202.46 | −$1.01M | −3.8%125.9K after | |
| Aug 17, 2026 (view filing)4:02 PM ET | Aug 14 | 3 days | Thompson Jere W IIICFO, Executive VP | SSale | −500 | $204.14 | −$102.1K | −2.6%18.5K after | |
| Aug 17, 2026 (view filing)4:02 PM ET | Aug 14 | 3 days | Zmigrosky MattEVP, Chief Legal and Admin Off | SSale | −2.50K | $202.77 | −$506.9K | −6.0%38.9K after | |
| Aug 24, 2026 (view filing)4:01 PM ET | Aug 21 | 3 days | Plaumann Mark LawrenceDirector | SSale | −1.00K | $210.58 | −$210.6K | −7.4%12.4K after | |
| Aug 24, 2026 (view filing)4:01 PM ET | Aug 20 | 4 days | Wesson Daniel NExec. VP & COO | SSale | −7.50K | $215.21 | −$1.61M | −9.6%70.8K after | |
| Aug 24, 2026 (view filing)4:01 PM ET | Aug 20 | 4 days | Van't Hof Matthew KaesChief Executive Officer | SSale | −10.0K | $214.66 | −$2.15M | −7.9%115.9K after | 2 lots |
| Sep 14, 2026 (view filing)4:07 PM ET | Sep 11 | 3 days | Stice Travis D.Director | SSale | −75.0K | $204.31 | −$15.3M | −60.1%49.7K after | |
| Sep 17, 2026 (view filing)4:03 PM ET | Sep 15 | 2 days | Dick Teresa L.EVP Accounting, Assist. Sec. | SSale | −5.00K | $210.00 | −$1.05M | −6.2%75.8K after | |
| Sep 17, 2026 (view filing)4:03 PM ET | Sep 15 | 2 days | Zmigrosky MattEVP, Chief Legal and Admin Off | SSale | −1.33K | $212.56 | −$281.8K | −3.5%36.7K after | |
| Sep 17, 2026 (view filing)5:08 PM ET | Sep 16 | 1 day | Greth Lyndal and 1 other10% Owner | SSale | −9.08M | $205.26 | −$1.86B | −12.3%65.0M after | |
| Sep 17, 2026 (view filing)5:12 PM ET | Sep 16 | 1 day | Greth Lyndal and 1 other10% Owner | SSale | −9.08M | $205.26 | −$1.86B | −12.3%65.0M after | Duplicate filing |