FANG insider buying and SEC filings, explained
Diamondback Energy, Inc. · CIK 1539838
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Crude Petroleum & Natural Gas
- State of incorporation
- DE
- Fiscal year end
- Dec 31
- Former names
- Diamondback Energy, Inc.
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$299.7M
Planned sales (10b5-1)
$47.4M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 5, 2026 | Planned (10b5-1) | Charles Alvin Meloy (Director) sold 33,333 shares indirectly (by entity) at about $183.74 ($6.1M), marked as a 10b5-1 plan trade. Holdings by entity down 4% to 759,864 shares. | SEC filing Filed Oct 7, 2026, 5:18 PM ET |
| Sep 15, 2026 | Sale | Matt Zmigrosky (EVP, Chief Legal and Admin Off) sold 1,326 shares at $212.56 ($282K). Holdings down 3% to 36,705 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 17, 2026 |
| Sep 15, 2026 | Sale | Teresa L. Dick (EVP Accounting, Assist. Sec.) sold 5,000 shares at $210.00 ($1.1M). Holdings down 6% to 75,755 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 17, 2026 |
| Sep 11, 2026 | Sale | Travis D. Stice (Director) sold 75,000 shares at about $204.31 ($15.3M). Holdings down 60% to 49,727 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Sep 14, 2026 |
| Aug 21, 2026 | Sale | Mark Lawrence Plaumann (Director) sold 1,000 shares at $210.58 ($211K). Holdings down 7% to 12,437 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 24, 2026 |
| Aug 20, 2026 | Sale | Hof Matthew Kaes Van't (CEO and Director) sold 10,000 shares at about $214.66 ($2.1M). Holdings down 8% to 115,940 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 24, 2026 |
| Aug 20, 2026 | Sale | Daniel N Wesson (President / COO) sold 7,500 shares at about $215.21 ($1.6M). Holdings down 10% to 70,789 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 24, 2026 |
| Aug 14, 2026 | Sale | Matt Zmigrosky (EVP, Chief Legal and Admin Off) sold 2,500 shares at about $202.77 ($507K). Holdings down 6% to 38,892 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 17, 2026 |
| Aug 14, 2026 | Sale | Jere W Thompson III (CFO) sold 500 shares at $204.14 ($102K). Holdings down 3% to 18,475 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 17, 2026 |
| Aug 11, 2026 | Sale | Hof Matthew Kaes Van't (CEO and Director) sold 5,000 shares at about $202.46 ($1.0M). Holdings down 4% to 125,940 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 12, 2026 |
| Aug 3, 2026 | Planned (10b5-1) | Charles Alvin Meloy (Director) sold 33,333 shares indirectly (by entity) at about $198.41 ($6.6M), marked as a 10b5-1 plan trade. Holdings by entity down 4% to 818,197 shares. | SEC filing Filed Aug 4, 2026 |
| Jun 16, 2026 | Planned (10b5-1) | Charles Alvin Meloy (Director) sold 83,334 shares indirectly (by entity) at about $187.12 ($15.6M), marked as a 10b5-1 plan trade. Holdings by entity down 9% to 851,530 shares. | SEC filing Filed Jun 17, 2026 |
| Jun 9, 2026 | Sale | Mark Lawrence Plaumann (Director) sold 500 shares at $196.50 ($98K). Holdings down 4% to 13,437 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 10, 2026 |
| Jun 4, 2026 | Sale | Teresa L. Dick (CAO, Exec. VP, Assist. Sec.) sold 5,000 shares at $205.00 ($1.0M). Holdings down 6% to 80,755 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 8, 2026 |
| Jun 3, 2026 | Sale | Hof Matthew Kaes Van't (CEO and Director) sold 15,000 shares at about $208.33 ($3.1M). Holdings down 10% to 133,614 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 4, 2026 |
| Jun 3, 2026 | Sale | Matt Zmigrosky (EVP, Chief Legal and Admin Off) sold 5,000 shares at $210.00 ($1.1M). Holdings down 11% to 41,392 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 4, 2026 |
| Jun 2, 2026 | Sale | Teresa L. Dick (CAO, Exec. VP, Assist. Sec.) sold 7,000 shares at $200.90 ($1.4M). Holdings down 8% to 85,755 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 2, 2026 |
| Jun 1, 2026 | Sale | Matt Zmigrosky (EVP, Chief Legal and Admin Off) sold 5,000 shares at $200.54 ($1.0M). Holdings down 10% to 46,392 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 2, 2026 |
| May 19, 2026 | Sale | Teresa L. Dick (CAO, Exec. VP, Assist. Sec.) sold 5,000 shares at $207.00 ($1.0M). Holdings down 5% to 92,755 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 21, 2026 |
| May 15, 2026 | Sale | Albert Barkmann (Exec. VP and Chief Engineer) sold 3,000 shares at about $204.04 ($612K). Holdings down 11% to 24,571 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 19, 2026 |
| May 15, 2026 | Sale | Jere W Thompson III (CFO) sold 1,000 shares at $203.16 ($203K). Holdings down 5% to 18,975 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 19, 2026 |
| May 14, 2026 | Sale | Teresa L. Dick (CAO, Exec. VP, Assist. Sec.) sold 5,000 shares at $200.00 ($1.0M). Holdings down 5% to 97,755 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 14, 2026 |
| May 13, 2026 | Sale | Matt Zmigrosky (EVP, Chief Legal and Admin Off) sold 5,000 shares at $200.10 ($1.0M). Holdings down 9% to 51,392 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 14, 2026 |
| May 7–8, 2026 | Planned (10b5-1) | Charles Alvin Meloy (Director) sold 15,714 shares indirectly (by entity) between May 7 and May 8 at about $189.14 ($3.0M), marked as a 10b5-1 plan trade. Holdings by entity down 2% to 934,864 shares. | SEC filing Filed May 11, 2026 |
| Apr 6–7, 2026 | Planned (10b5-1) | Charles Alvin Meloy (Director) sold 15,714 shares indirectly (by entity) between Apr 6 and Apr 7 at about $195.47 ($3.1M), marked as a 10b5-1 plan trade. Holdings by entity down 2% to 950,578 shares. | SEC filing Filed Apr 8, 2026 |
| Mar 20, 2026 | Sale | Daniel N Wesson (President / COO) sold 5,000 shares at about $191.96 ($960K). Holdings down 6% to 78,289 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 24, 2026 |
| Mar 20, 2026 | Sale | Teresa L. Dick (CAO, Exec. VP, Assist. Sec.) sold 5,000 shares at $193.00 ($965K). Holdings down 5% to 102,755 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 24, 2026 |
| Mar 18, 2026 | Sale | Steven E. West (Director) sold 6,000 shares at about $188.35 ($1.1M). Holdings down 57% to 4,484 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 19, 2026 |
| Mar 18, 2026 | Sale | Matt Zmigrosky (EVP, Chief Legal and Admin Off) sold 4,101 shares at about $190.51 ($781K). Holdings down 7% to 56,392 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 19, 2026 |
| Mar 18, 2026 | Sale | Teresa L. Dick (CAO, Exec. VP, Assist. Sec.) sold 5,000 shares at $190.00 ($950K). Holdings down 4% to 107,755 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 19, 2026 |
| Mar 16, 2026 | Sale | Jere W Thompson III (CFO) sold 750 shares at $182.47 ($137K). Holdings down 4% to 19,975 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 13, 2026 | Sale | Matt Zmigrosky (EVP, Chief Legal and Admin Off) sold 20,899 shares at about $180.00 ($3.8M). Holdings down 26% to 60,493 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 13, 2026 | Sale | Albert Barkmann (Exec. VP and Chief Engineer) sold 4,000 shares at $182.90 ($732K). Holdings down 13% to 27,571 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 17, 2026 |
| Mar 9–10, 2026 | Planned (10b5-1) | Charles Alvin Meloy (Director) sold 15,714 shares indirectly (by entity) between Mar 9 and Mar 10 at about $181.50 ($2.9M), marked as a 10b5-1 plan trade. Holdings by entity down 2% to 966,292 shares. | SEC filing Filed Mar 11, 2026 |
| Mar 6, 2026 | Sale | Jere W Thompson III (CFO) sold 750 shares at $181.68 ($136K). Holdings down 3% to 20,725 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 6, 2026 | Sale | Daniel N Wesson (President / COO) sold 20,000 shares at about $181.11 ($3.6M). Holdings down 19% to 83,289 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 6, 2026 | Sale | Travis D. Stice (Chair and Director) sold 100,000 shares directly and indirectly at about $181.13 ($18.1M). Direct holdings down 23% to 123,745 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 6, 2026 | Sale | Hof Matthew Kaes Van't (CEO and Director) sold 10,000 shares at about $180.84 ($1.8M). Holdings down 6% to 148,614 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 6–9, 2026 | Sale | Teresa L. Dick (CAO, Exec. VP, Assist. Sec.) sold 5,500 shares between Mar 6 and Mar 9 at about $183.07 ($1.0M). Holdings down 5% to 112,755 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Mar 10, 2026 |
| Mar 4, 2026 | Sale | Lyndal Greth (10% owner) sold 1,000,000 shares at $176.71 ($176.7M). Holdings down 1% to 96,686,727 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed Mar 5, 2026 |
| Feb 2–3, 2026 | Planned (10b5-1) | Charles Alvin Meloy (Director) sold 62,805 shares indirectly (by entity) between Feb 2 and Feb 3 at about $161.09 ($10.1M), marked as a 10b5-1 plan trade. Holdings by entity down 6% to 982,006 shares. | SEC filing Filed Feb 4, 2026 |
| Dec 8, 2025 | Planned (10b5-1) | Charles Alvin Meloy (Director) sold 53 shares indirectly (by entity) at about $160.13 ($8K), marked as a 10b5-1 plan trade. Holdings by entity down <1% to 1,044,811 shares. | SEC filing Filed Dec 10, 2025 |
| Dec 4, 2025 | Sale | Charles Alvin Meloy (Director) sold 377,911 shares indirectly (by entity) at $138.61 ($52.4M). Holdings by entity down 27% to 1,044,864 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 8, 2025 |
| Nov 26, 2025 | Sale | Daniel N Wesson (President / COO) sold 4,000 shares at about $149.24 ($597K). Holdings down 5% to 80,117 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 1, 2025 |
| Nov 14, 2025 | Sale | Matt Zmigrosky (EVP, Chief Legal and Admin Off) sold 3,500 shares at $148.18 ($519K). Holdings down 5% to 63,534 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 18, 2025 |
| Nov 11, 2025 | Sale | Jere W Thompson III (CFO) sold 1,000 shares at $147.73 ($148K). Holdings down 7% to 12,788 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 13, 2025 |
| Nov 6, 2025 | Sale | Hof Matthew Kaes Van't (CEO and Director) sold 10,000 shares at about $140.61 ($1.4M). Holdings down 8% to 119,264 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 10, 2025 |
28 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
| Filed | Items | Tag | Source |
|---|---|---|---|
| Nov 2, 2026, 4:06 PM ET 8-K | Earnings released (Item 2.02) | SEC filing |
Red flags are objective triggers only: the item or form filed, never an opinion.
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