INVESTABOT
Equity Research
XNAS · CRUDE PETROLEUM & NATURAL GAS
Includes notes from domestic 8-K and foreign private issuer 6-K disclosures.
TL;DR: Darin Holderness and Lance Robertson resigned from Diamondback Energy's board on September 29 and September 30, 2026, respectively, following a contractual "Board Stepdown" provision tied to a stockholder…
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-09-16. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 2 Form 144 pre-sale notices filed on 2026-09-15. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-09-11. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-08-21. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 2 Form 144 pre-sale notices filed on 2026-08-20. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-08-11. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 2 Form 144 pre-sale notices filed on 2026-08-14. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-06-02. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-06-16. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction. At least one…
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-06-09. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-06-03. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 2 Form 144 pre-sale notices filed on 2026-06-04. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-05-14. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 2 Form 144 pre-sale notices filed on 2026-05-15. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Diamondback Energy (FANG) had 1 Form 144 pre-sale notice filed on 2026-05-13. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
open-market Form 4 only - grants, exercises, tax withholding excluded
0 buyers - 9 unique sellers · 9 accumulating - 4 trimming - 0 unchanged
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| September 16, 2026 | Meloy Charles Alvin | — | GIFT | 25,000 | — | — |
| September 16, 2026 | Meloy Charles Alvin | — | GIFT | -12,500 | — | — |
| September 16, 2026 | SGF FANG Holdings, LP | — | SELL | -9,079,675 | $205 | ~$1.9B |
| September 16, 2026 | SGF FANG Holdings, LP | — | SELL | -9,079,675 | $205 | ~$1.9B |
| September 15, 2026 | Meloy Charles Alvin | — | GIFT | 12,500 | — | — |
| September 15, 2026 | Meloy Charles Alvin | — | GIFT | -25,000 | — | — |
| September 15, 2026 | Dick Teresa L. | EVP Accounting, Assist. Sec. | SELL | -5,000 | $210 | ~$1.1M |
| September 15, 2026 | Zmigrosky Matt | EVP, Chief Legal and Admin Off | SELL | -1,326 | $213 | ~$0.3M |
| September 11, 2026 | Stice Travis D. | — | SELL | -75,000 | $204 | ~$15.3M |
| September 10, 2026 | Zmigrosky Matt | EVP, Chief Legal and Admin Off | TAX_WITHHOLD | -861 | $203 | ~$0.2M |
| September 10, 2026 | Barkmann Albert | Exec. VP and Chief Engineer | TAX_WITHHOLD | -682 | $203 | ~$0.1M |
| August 21, 2026 | Plaumann Mark Lawrence | — | SELL | -1,000 | $211 | ~$0.2M |
| August 20, 2026 | Van't Hof Matthew Kaes | Chief Executive Officer | SELL | -9,500 | $215 | ~$2.0M |
| August 20, 2026 | Van't Hof Matthew Kaes | Chief Executive Officer | SELL | -500 | $215 | ~$0.1M |
| August 20, 2026 | Wesson Daniel N | Exec. VP & COO | SELL | -7,500 | $215 | ~$1.6M |
| August 14, 2026 | Zmigrosky Matt | EVP, Chief Legal and Admin Off | SELL | -2,500 | $203 | ~$0.5M |
| August 14, 2026 | Thompson Jere W III | CFO, Executive VP | SELL | -500 | $204 | ~$0.1M |
| August 11, 2026 | Van't Hof Matthew Kaes | Chief Executive Officer | SELL | -5,000 | $202 | ~$1.0M |
| August 3, 2026 | Meloy Charles Alvin | — | SELL | -3,986 | $197 | ~$0.8M |
| August 3, 2026 | Meloy Charles Alvin | — | SELL | -7,562 | $198 | ~$1.5M |
| Date | Filer | Relationship | Est. shares | Filing |
|---|---|---|---|---|
| September 16, 2026 | SGF FANG Holdings, LP | — | 9,079,675 | SEC |
| September 15, 2026 | Dick Teresa L. | — | 5,000 | SEC |
| September 15, 2026 | Zmigrosky Matt | — | 1,326 | SEC |
| September 11, 2026 | Stice Travis D. | — | 75,000 | SEC |
| August 21, 2026 | Plaumann Mark Lawrence | — | 1,000 | SEC |
| August 20, 2026 | Van't Hof Matthew Kaes | — | 10,000 | SEC |
| August 20, 2026 | Wesson Daniel N | — | 7,500 | SEC |
| August 14, 2026 | Zmigrosky Matt | — | 2,500 | SEC |
| August 14, 2026 | Thompson Jere W III | — | 500 | SEC |
| August 11, 2026 | Van't Hof Matthew Kaes | — | 5,000 | SEC |
| Institution | Shares | Value ($) | Change % | Filing date |
|---|---|---|---|---|
| BlackRock | 18,506,255 | ~$3.7B | 3.2% | May 13, 2026 |
| Vanguard Group | 23,010,298 | ~$3.5B | — | January 29, 2026 |
| BlackRock | 18,792,594 | ~$3.3B | 1.6% | August 7, 2026 |
| BlackRock | 14,924,232 | ~$3.0B | — | August 13, 2024 |
| BlackRock | 17,936,364 | ~$2.7B | — | February 12, 2026 |
| State Street | 12,051,943 | ~$2.4B | 12.6% | May 15, 2026 |
| State Street | 12,562,224 | ~$2.2B | 4.2% | August 7, 2026 |
| State Street | 10,704,084 | ~$1.6B | — | February 13, 2026 |
| JP Morgan Chase | 6,656,798 | ~$1.3B | 31.8% | May 13, 2026 |
| Fidelity (FMR) | 4,878,279 | ~$964.9M | -1.5% | May 15, 2026 |
| Fidelity (FMR) | 4,594,399 | ~$807.6M | -5.8% | August 13, 2026 |
| JP Morgan Chase | 5,049,441 | ~$759.1M | — | February 11, 2026 |
| JP Morgan Chase | 4,140,466 | ~$747.5M | -37.8% | August 12, 2026 |
| Fidelity (FMR) | 4,952,402 | ~$744.5M | — | February 17, 2026 |
| Morgan Stanley | 3,751,908 | ~$742.1M | -2.0% | May 15, 2026 |
| Morgan Stanley | 3,895,346 | ~$684.7M | 3.8% | August 13, 2026 |
| Morgan Stanley | 3,828,941 | ~$575.6M | — | May 27, 2026 |
| DE Shaw | 2,742,058 | ~$482.0M | 62.4% | August 14, 2026 |
| Goldman Sachs | 2,352,124 | ~$465.2M | -3.6% | May 15, 2026 |
| Goldman Sachs | 2,319,669 | ~$407.8M | -1.4% | August 14, 2026 |