Only open-market buys / sells (codes P/S) are a conviction signal; grants, option exercises, tax-withholding, and gifts are compensation mechanics, shown but greyed. The trailing 12-month tallies run to today but the store covers filings through 2026-06-30 only (SEC bulk data sets publish quarterly), so recent activity may be absent.
| Date | Insider | Role | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-19 | WEST STEVEN E | Director | +Grant | 3,612 | — | — |
| 2026-05-19 | Argo Laurie H | Director | +Grant | 3,612 | — | — |
| 2026-05-19 | Armour Spencer D III | Director | +Grant | 3,612 | — | — |
| 2026-05-19 | PERRY WILLIAM WESLEY | Director | +Grant | 3,612 | — | — |
| 2026-05-19 | Hu Frank C. | Director | +Grant | 3,612 | — | — |
| 2026-05-19 | Rubin James L. | Director | +Grant | 3,612 | — | — |
| 2026-05-19 | Stice Travis D. | Director | +Grant | 3,612 | — | — |
| 2026-03-19 | Diamondback Energy, Inc. | TenPercentOwner,Other | −Sell | 510,071 | $45.69 | $23M |
| 2026-03-19 | Diamondback Energy, Inc. | TenPercentOwner,Other | +Conversion | 510,071 | — | — |
| 2026-03-04 | Diamondback Energy, Inc. | TenPercentOwner,Other | −Sell | 12,391,304 | $45.69 | $566M |
| 2026-03-04 | Diamondback Energy, Inc. | TenPercentOwner,Other | +Conversion | 12,391,304 | — | — |
| 2026-03-01 | Gilfillian Austen | Officer | −Tax w/h | 2,645 | $46.54 | $123,098 |
| 2026-03-01 | Gilfillian Austen | Officer | −Tax w/h | 1,614 | $46.54 | $75,116 |
| 2026-03-01 | Gilfillian Austen | Officer | −Tax w/h | 1,421 | $46.54 | $66,133 |
| 2026-03-01 | Gilfillian Austen | Officer | +Grant | 12,302 | — | — |
| 2026-03-01 | Gilfillian Austen | Officer | −Tax w/h | 829 | $46.54 | $38,582 |
| 2026-03-01 | Krueger William F | Officer | +Grant | 8,787 | — | — |
| 2026-03-01 | Krueger William F | Officer | −Tax w/h | 1,166 | $46.54 | $54,266 |
| 2026-03-01 | Krueger William F | Officer | −Tax w/h | 1,153 | $46.54 | $53,661 |
| 2025-10-01 | Gilfillian Austen | Officer | −Tax w/h | 730 | $38.22 | $27,901 |
| 2025-10-01 | Gilfillian Austen | Officer | −Tax w/h | 1,008 | $38.22 | $38,526 |
| 2025-08-19 | WEST STEVEN E | Director | −Disp→issuer | 32,788 | — | — |
| 2025-08-19 | Van't Hof Matthew Kaes | Director,Officer | −Disp→issuer | 35,362 | — | — |
| 2025-08-19 | Zmigrosky Matt | Officer | −Disp→issuer | 4,253 | — | — |
| 2025-08-19 | Dick Teresa L. | Officer | −Disp→issuer | 11,540 | — | — |
| 2025-08-19 | Argo Laurie H | Director | −Disp→issuer | 10,591 | — | — |
| 2025-08-19 | Rubin James L. | Director | −Disp→issuer | 12,507 | — | — |
| 2025-08-19 | Hu Frank C. | Director | −Disp→issuer | 16,498 | — | — |
| 2025-08-19 | Stice Travis D. | Director | −Disp→issuer | 106,169 | — | — |
| 2025-08-19 | Gilfillian Austen | Officer | −Disp→issuer | 45,213 | — | — |
| 2025-08-19 | PERRY WILLIAM WESLEY | Director | −Disp→issuer | 78,743 | — | — |
| 2025-08-19 | Armour Spencer D III | Director | −Disp→issuer | 46,715 | — | — |
| 2025-08-19 | Barkmann Albert | Officer | −Disp→issuer | 1,000 | — | — |
| 2025-05-20 | PERRY WILLIAM WESLEY | Director | +Grant | 4,173 | — | — |
| 2025-05-20 | Rubin James L. | Director | +Grant | 4,173 | — | — |
| 2025-05-20 | Hu Frank C. | Director | +Grant | 4,173 | — | — |
| 2025-05-20 | Argo Laurie H | Director | +Grant | 4,173 | — | — |
| 2025-05-20 | Armour Spencer D III | Director | +Grant | 4,173 | — | — |
| 2025-05-20 | WEST STEVEN E | Director | +Grant | 4,173 | — | — |
| 2025-03-01 | Gilfillian Austen | Officer | −Tax w/h | 1,421 | $46.57 | $66,176 |
| 2025-03-01 | Gilfillian Austen | Officer | +Grant | 10,829 | — | — |
| 2025-03-01 | Gilfillian Austen | Officer | −Tax w/h | 829 | $46.57 | $38,607 |
| 2025-03-01 | Gilfillian Austen | Officer | −Tax w/h | 2,645 | $46.57 | $123,178 |
| 2024-07-10 | Argo Laurie H | Director | +Grant | 2,555 | — | — |
| 2024-07-10 | Armour Spencer D III | Director | +Grant | 2,555 | — | — |
| 2024-07-10 | Hu Frank C. | Director | +Grant | 2,555 | — | — |
| 2024-07-10 | PERRY WILLIAM WESLEY | Director | +Grant | 2,555 | — | — |
| 2024-07-10 | Rubin James L. | Director | +Grant | 2,555 | — | — |
| 2024-07-10 | WEST STEVEN E | Director | +Grant | 2,555 | — | — |
| 2024-05-31 | Stice Travis D. | Director,Officer | +Gift | 8,494 | — | — |
| 2024-03-08 | Diamondback Energy, Inc. | Director,TenPercentOwner | −Sell | 13,225,000 | $34.13 | $451M |
| 2024-03-08 | Diamondback Energy, Inc. | Director,TenPercentOwner | +Exercise | 5,278,493 | — | — |
| 2023-12-31 | Stice Travis D. | Director,Officer | −Gift | 14,864 | — | — |
| 2023-11-16 | Burgess Ian | TenPercentOwner | −Sell | 9,018,760 | $28.70 | $259M |
| 2023-10-31 | Diamondback Energy, Inc. | Director,TenPercentOwner | +Exercise | 7,215,007 | $27.72 | $200M |
| 2023-07-10 | WEST STEVEN E | Director | +Grant | 3,863 | — | — |
| 2023-07-10 | Rubin James L. | Director | +Grant | 3,863 | — | — |
| 2023-07-10 | PERRY WILLIAM WESLEY | Director | +Grant | 3,863 | — | — |
| 2023-07-10 | Hu Frank C. | Director | +Grant | 3,863 | — | — |
| 2023-07-10 | Argo Laurie H | Director | +Grant | 3,863 | — | — |
| 2023-07-10 | Armour Spencer D III | Director | +Grant | 3,863 | — | — |
| 2023-07-10 | Rubin James L. | Director | +Grant | 3,863 | — | — |
| 2023-04-18 | BX Guidon Topco LLC | TenPercentOwner | −Sell | 1,700,000 | $30.00 | $51M |
| 2023-04-18 | BX Guidon Topco LLC | TenPercentOwner | −Sell | 110,400 | $30.43 | $3M |
| 2023-04-18 | Blackstone Inc. | TenPercentOwner | −Sell | 110,400 | $30.43 | $3M |
| 2023-04-18 | Blackstone Inc. | TenPercentOwner | −Sell | 1,700,000 | $30.00 | $51M |
| 2023-04-17 | Blackstone EMA II L.L.C. | TenPercentOwner | −Sell | 180,000 | $30.63 | $6M |
| 2023-04-17 | Blackstone Group Management L.L.C. | TenPercentOwner | −Sell | 180,000 | $30.63 | $6M |
| 2023-04-14 | Blackstone EMA II L.L.C. | TenPercentOwner | −Sell | 91,100 | $30.53 | $3M |
| 2023-04-14 | Blackstone Group Management L.L.C. | TenPercentOwner | −Sell | 91,100 | $30.53 | $3M |
| 2023-04-13 | Blackstone EMA II L.L.C. | TenPercentOwner | −Sell | 656,381 | $30.63 | $20M |
| 2023-04-13 | Blackstone Holdings III GP L.P. | TenPercentOwner | −Sell | 656,381 | $30.63 | $20M |
| 2023-04-12 | Blackstone EMA II L.L.C. | TenPercentOwner | −Sell | 40,000 | $30.58 | $1M |
| 2023-04-12 | Blackstone Holdings III GP L.P. | TenPercentOwner | −Sell | 40,000 | $30.58 | $1M |
| 2023-04-11 | BX SWT ML Holdco LLC | TenPercentOwner | −Sell | 28,000 | $30.42 | $851,760 |
| 2023-04-11 | SCHWARZMAN STEPHEN A | TenPercentOwner | −Sell | 28,000 | $30.42 | $851,760 |
| 2023-04-10 | BX SWT ML Holdco LLC | TenPercentOwner | −Sell | 34,000 | $30.15 | $1M |
| 2023-04-10 | SCHWARZMAN STEPHEN A | TenPercentOwner | −Sell | 34,000 | $30.15 | $1M |
| 2023-03-20 | Hu Frank C. | Director | +Buy | 2,000 | $27.50 | $55,000 |
| 2023-03-15 | Armour Spencer D III | Director | +Buy | 4,000 | $26.44 | $105,760 |
| 2023-01-27 | Blackstone Management Associates VI L.L.C. | TenPercentOwner | −Sell | 2,000 | $33.05 | $66,100 |
| 2023-01-27 | Blackstone Group Management L.L.C. | TenPercentOwner | −Sell | 2,000 | $33.05 | $66,100 |
| 2023-01-26 | Blackstone Management Associates VI L.L.C. | TenPercentOwner | −Sell | 205,500 | $33.00 | $7M |
| 2023-01-26 | Blackstone Group Management L.L.C. | TenPercentOwner | −Sell | 205,500 | $33.00 | $7M |
| 2022-11-15 | Blackstone Management Associates VI L.L.C. | TenPercentOwner | −Sell | 85,000 | $33.45 | $3M |
| 2022-11-15 | Blackstone Holdings III GP Management L.L.C. | TenPercentOwner | −Sell | 85,000 | $33.45 | $3M |
| 2022-11-14 | Blackstone Management Associates VI L.L.C. | TenPercentOwner | −Sell | 128,200 | $33.83 | $4M |
| 2022-11-14 | Blackstone Holdings III GP Management L.L.C. | TenPercentOwner | −Sell | 128,200 | $33.83 | $4M |
| 2022-11-08 | Blackstone Management Associates VI L.L.C. | TenPercentOwner | −Sell | 32,072 | $35.52 | $1M |
| 2022-11-08 | Blackstone Inc. | TenPercentOwner | −Sell | 32,072 | $35.52 | $1M |
| 2022-11-07 | BMA VI L.L.C. | TenPercentOwner | −Sell | 2,773 | $35.81 | $99,301 |
| 2022-11-07 | BMA VI L.L.C. | TenPercentOwner | −Sell | 177,227 | $35.47 | $6M |
| 2022-11-07 | SCHWARZMAN STEPHEN A | TenPercentOwner | −Sell | 177,227 | $35.47 | $6M |
| 2022-11-07 | SCHWARZMAN STEPHEN A | TenPercentOwner | −Sell | 2,773 | $35.81 | $99,301 |
| 2022-11-04 | BMA VI L.L.C. | TenPercentOwner | −Sell | 205,000 | $34.36 | $7M |
| 2022-11-04 | SCHWARZMAN STEPHEN A | TenPercentOwner | −Sell | 205,000 | $34.36 | $7M |
| 2022-11-03 | BMA VI L.L.C. | TenPercentOwner | −Sell | 262,870 | $34.33 | $9M |
| 2022-11-03 | BMA VI L.L.C. | TenPercentOwner | −Sell | 77,130 | $33.86 | $3M |
| 2022-11-03 | SCHWARZMAN STEPHEN A | TenPercentOwner | −Sell | 77,130 | $33.86 | $3M |
| 2022-11-03 | SCHWARZMAN STEPHEN A | TenPercentOwner | −Sell | 262,870 | $34.33 | $9M |
| 2022-11-02 | BX Guidon Topco LLC | TenPercentOwner | −Sell | 728 | $34.25 | $24,934 |
| 2022-11-02 | BX Guidon Topco LLC | TenPercentOwner | −Sell | 124,272 | $33.73 | $4M |
| 2022-11-02 | Blackstone Holdings III GP Management L.L.C. | TenPercentOwner | −Sell | 124,272 | $33.73 | $4M |
| 2022-11-02 | Blackstone Holdings III GP Management L.L.C. | TenPercentOwner | −Sell | 728 | $34.25 | $24,934 |
| 2022-11-01 | BX Guidon Topco LLC | TenPercentOwner | −Sell | 60,000 | $33.59 | $2M |
| 2022-11-01 | Blackstone Holdings III GP Management L.L.C. | TenPercentOwner | −Sell | 60,000 | $33.59 | $2M |
| 2022-10-31 | BMA VI L.L.C. | TenPercentOwner | −Sell | 65,000 | $33.42 | $2M |
| 2022-10-31 | Blackstone Holdings III GP Management L.L.C. | TenPercentOwner | −Sell | 65,000 | $33.42 | $2M |
| 2022-10-28 | BMA VI L.L.C. | TenPercentOwner | −Sell | 17,846 | $33.13 | $591,238 |
| 2022-10-28 | BMA VI L.L.C. | TenPercentOwner | −Sell | 30,000 | $33.15 | $994,500 |
| 2022-10-28 | Blackstone Holdings III GP Management L.L.C. | TenPercentOwner | −Sell | 30,000 | $33.15 | $994,500 |
| 2022-10-28 | Blackstone Holdings III GP Management L.L.C. | TenPercentOwner | −Sell | 17,846 | $33.13 | $591,238 |
| 2022-10-27 | Blackstone Management Associates VI L.L.C. | TenPercentOwner | −Sell | 59,399 | $33.61 | $2M |
| 2022-10-27 | Blackstone Management Associates VI L.L.C. | TenPercentOwner | −Sell | 6,601 | $34.11 | $225,160 |
| 2022-10-27 | Blackstone Inc. | TenPercentOwner | −Sell | 6,601 | $34.11 | $225,160 |
| 2022-10-27 | Blackstone Inc. | TenPercentOwner | −Sell | 59,399 | $33.61 | $2M |
| 2022-10-26 | Blackstone Management Associates VI L.L.C. | TenPercentOwner | −Sell | 85,000 | $33.69 | $3M |
| 2022-10-26 | Blackstone Inc. | TenPercentOwner | −Sell | 85,000 | $33.69 | $3M |
| 2022-10-25 | Blackstone EMA II L.L.C. | TenPercentOwner | −Sell | 15,000 | $33.04 | $495,600 |
| 2022-10-25 | Blackstone Holdings III GP L.P. | TenPercentOwner | −Sell | 15,000 | $33.04 | $495,600 |
Source: the SEC bulk insider (Form 3/4/5) data sets — non-derivative transactions in the issuer's common stock, most recent first, covering filings through 2026-06-30. Insiders file within 2 business days of a transaction, but the bulk sets publish quarterly, so this store lags live filings; option/derivative lines are excluded. Codes: P buy · S sell · A grant · M/X/C exercise · F tax · G gift.
Model-derived estimate for research. See the Disclaimer.
