Diamondback Energy's three largest insider shareholders as of September 29, 2026 are Fang Holdings, Lp Sgf (TenPercentOwner, 64.96Mn shares), Lyndal Greth (TenPercentOwner, 31.95Mn shares), Charles Alvin Meloy (Director, 821.45K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Fang Holdings, Lp Sgf | TenPercentOwner | 64,957,047 | 0 | 64,957,047 | 66.0% | 17 Sep, 2026 |
| 2 | Lyndal Greth | TenPercentOwner | 0 | 31,947,366 | 31,947,366 | 32.5% | 23 Sep, 2024 |
| 3 | Charles Alvin Meloy | Director | 28,257 | 793,197 | 821,454 | 0.8% | 17 Sep, 2026 |
| 4 | Russell Pantermuehl | Exec. Vp Chief Engineer | 123,419 | 0 | 123,419 | 0.1% | 09 Dec, 2021 |
| 5 | Hof Matthew Kaes Van'T | Chief Executive Officer | 115,940 | 0 | 115,940 | 0.1% | 24 Aug, 2026 |
| 6 | Teresa L. Dick | Evp Accounting, Assist. Sec. | 75,755 | 0 | 75,755 | 0.1% | 17 Sep, 2026 |
| 7 | Daniel N Wesson | Exec. Vp Coo | 70,789 | 0 | 70,789 | 0.1% | 24 Aug, 2026 |
| 8 | Travis D. Stice | Executive Chairman | 49,727 | 0 | 49,727 | 0.1% | 14 Sep, 2026 |
| 9 | Matt Zmigrosky | Evp, Chief Legal And Admin Off | 36,705 | 0 | 36,705 | 0.0% | 17 Sep, 2026 |
| 10 | Albert Barkmann | Exec. Vp And Chief Engineer | 23,889 | 0 | 23,889 | 0.0% | 14 Sep, 2026 |
| 11 | Jere W Iii Thompson | Cfo, Executive Vp | 18,475 | 0 | 18,475 | 0.0% | 17 Aug, 2026 |
| 12 | Melanie Montague Trent | Director | 15,039 | 0 | 15,039 | 0.0% | 21 May, 2026 |
| 13 | Thomas F. Hawkins | Exec. Vp Special Projects | 13,795 | 0 | 13,795 | 0.0% | 03 Mar, 2022 |
| 14 | Michael P Cross | Director | 0 | 13,538 | 13,538 | 0.0% | 13 Jun, 2022 |
| 15 | David L Houston | Director | 12,600 | 0 | 12,600 | 0.0% | 10 Jun, 2024 |
| 16 | Mark Lawrence Plaumann | Director | 12,437 | 0 | 12,437 | 0.0% | 24 Aug, 2026 |
| 17 | Vincent K Brooks | Director | 0 | 11,635 | 11,635 | 0.0% | 21 May, 2026 |
| 18 | Stephanie K. Mains | Director | 11,635 | 0 | 11,635 | 0.0% | 21 May, 2026 |
| 19 | Lance W Robertson | Director | 9,999 | 0 | 9,999 | 0.0% | 21 May, 2026 |
| 20 | Jennifer Soliman | Exec. Vp And Chief Hr Officer | 9,506 | 0 | 9,506 | 0.0% | 09 Mar, 2022 |
| 21 | Frank D. Tsuru | Director | 8,129 | 0 | 8,129 | 0.0% | 21 May, 2026 |
| 22 | Rebecca A Klein | Director | 6,129 | 0 | 6,129 | 0.0% | 21 May, 2026 |
| 23 | Robert K Reeves | Director | 6,066 | 0 | 6,066 | 0.0% | 21 May, 2026 |
| 24 | Chad Mcallaster | Evp Operations | 5,889 | 0 | 5,889 | 0.0% | 03 Mar, 2026 |
| 25 | Steven E West | Director | 5,466 | 0 | 5,466 | 0.0% | 21 May, 2026 |
| 26 | Darin G Holderness | Director | 2,798 | 0 | 2,798 | 0.0% | 21 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 16 Sep, 2026 | Fang Holdings, Lp Sgf | TenPercentOwner | Disposed S | 9,079,675 | $205.26 | $1.86Bn | 64,957,047 | Direct |
| 15 Sep, 2026 | Charles Alvin Meloy | Director | Disposed G | 25,000 | $0.00 | $0 | 793,197 | Indirect |
| 15 Sep, 2026 | Matt Zmigrosky | Evp, Chief Legal And Admin Off | Disposed S | 1,326 | $212.56 | $281.85K | 36,705 | Direct |
| 15 Sep, 2026 | Teresa L. Dick | Evp Accounting, Assist. Sec. | Disposed S | 5,000 | $210.00 | $1.05Mn | 75,755 | Direct |
| 16 Sep, 2026 | Fang Holdings, Lp Sgf | TenPercentOwner | Disposed S | 9,079,675 | $205.26 | $1.86Bn | 64,957,047 | Direct |
| 15 Sep, 2026 | Charles Alvin Meloy | Director | Acquired G | 12,500 | $0.00 | $0 | 12,500 | Indirect |
| 15 Sep, 2026 | Charles Alvin Meloy | Director | Acquired G | 12,500 | $0.00 | $0 | 12,500 | Indirect |
| 16 Sep, 2026 | Charles Alvin Meloy | Director | Disposed G | 12,500 | $0.00 | $0 | 0 | Indirect |
| 16 Sep, 2026 | Charles Alvin Meloy | Director | Disposed G | 12,500 | $0.00 | $0 | 0 | Indirect |
| 16 Sep, 2026 | Charles Alvin Meloy | Director | Acquired G | 25,000 | $0.00 | $0 | 28,257 | Direct |
| 20 Aug, 2026 | Daniel N Wesson | Exec. Vp Coo | Disposed S | 7,500 | $215.21 | $1.61Mn | 70,789 | Direct |
| 20 Aug, 2026 | Hof Matthew Kaes Van'T | Chief Executive Officer | Disposed S | 9,500 | $214.64 | $2.04Mn | 116,440 | Direct |
| 21 Aug, 2026 | Mark Lawrence Plaumann | Director | Disposed S | 1,000 | $210.58 | $210.58K | 12,437 | Direct |
| 20 Aug, 2026 | Hof Matthew Kaes Van'T | Chief Executive Officer | Disposed S | 500 | $215.06 | $107.53K | 115,940 | Direct |
| 14 Aug, 2026 | Matt Zmigrosky | Evp, Chief Legal And Admin Off | Disposed S | 2,500 | $202.77 | $506.93K | 38,892 | Direct |
| 14 Aug, 2026 | Jere W Iii Thompson | Cfo, Executive Vp | Disposed S | 500 | $204.14 | $102.07K | 18,475 | Direct |
| 11 Aug, 2026 | Hof Matthew Kaes Van'T | Chief Executive Officer | Disposed S | 5,000 | $202.46 | $1.01Mn | 125,940 | Direct |
| 03 Aug, 2026 | Charles Alvin Meloy | Director | Disposed S | 3,986 | $197.06 | $785.47K | 847,544 | Indirect |
| 03 Aug, 2026 | Charles Alvin Meloy | Director | Disposed S | 7,562 | $197.91 | $1.50Mn | 839,982 | Indirect |
| 03 Aug, 2026 | Charles Alvin Meloy | Director | Disposed S | 19,055 | $198.74 | $3.79Mn | 820,927 | Indirect |