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Diamondback Energy (FANG)Officer sold ~$781K

Matt Zmigrosky, Officer at Diamondback Energy, sold ~$781K of Diamondback Energy shares.

~$781K
Approx. value · 4,101 sh @ $190.51
56K
Holds after · shares reported
Traded
Mar 18, 2026
Filed
Mar 19, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

  1. Feb 2, 2026InsiderDirector sold ~$352K of FANG shares in the open market
  2. Feb 3, 2026Insider · 2 peopleInsiders: 4 sales (~$172.6M)
  3. Feb 4, 2026Insider10% owner sold ~$169M of FANG shares in the open market
  4. Feb 5, 20265% stakeSGF FANG Holdings, LP filed an activist stake (13D) of 34.1%
  5. Feb 23, 2026Company filing · Form 8-K · ResultsReported its results
  6. Mar 4, 2026Insider10% owner sold ~$177M of FANG shares in the open market
  7. Mar 6, 2026Insider · 5 peopleInsiders: 9 sales (~$24.2M)
  8. Mar 9, 2026Insider · 2 peopleInsiders: 8 sales (~$1.9M)
  9. Mar 10, 2026Company filing · Form 8-K · Material agreement, Other newsSigned an important agreement, and reported other company news
  10. Mar 10, 2026Insider · 1 personInsiders: 6 sales (~$1.4M)
  11. Mar 12, 2026Insider10% owner sold ~$2.15B of FANG shares in the open market
  12. Mar 13, 2026Insider · 2 peopleInsiders: 2 sales (~$4.5M)
  13. Mar 16, 20265% stakeSGF FANG Holdings, LP filed an activist stake (13D) of 29.9%
  14. Mar 16, 2026InsiderCFO sold ~$137K of FANG shares in the open market
  15. Mar 18, 2026 · this disclosureInsiderOfficer sold ~$781K of FANG shares in the open market

What came next

  1. Mar 18, 2026Insider · 2 peopleInsiders: 2 sales (~$2.1M)
  2. Mar 20, 2026Insider · 2 peopleInsiders: 2 sales (~$1.9M)
  3. Mar 26, 20265% stakeThe Vanguard Group reported a passive stake (13G)
  4. Apr 6, 2026Insider · 1 personInsiders: 3 sales (~$1.5M)
  5. Apr 7, 2026Insider · 1 personInsiders: 4 sales (~$1.5M)
  6. Apr 13, 2026Company filing · Form 8-K · ResultsReported its results
  7. Apr 29, 20265% stakeVanguard Capital Management reported a passive stake (13G) of 5.2%
  8. May 4, 2026Company filing · Form 8-K · ResultsReported its results
  9. May 7, 2026Insider · 1 personInsiders: 4 sales (~$1.5M)
  10. May 8, 2026Insider · 1 personInsiders: 3 sales (~$1.5M)
  11. May 13, 2026Insider · 7 days before an 8-KOfficer sold ~$1M of FANG shares in the open market
  12. May 14, 2026Insider · 6 days before an 8-KOfficer sold ~$1M of FANG shares in the open market
  13. May 15, 2026Insider · 2 peopleInsiders: 2 sales (~$815K)
  14. May 19, 2026Insider · 1 day before an 8-KOfficer sold ~$1.03M of FANG shares in the open market
  15. May 20, 2026Company filing · Form 8-K · Executive change, Shareholder voteChanged a top executive or board member, and held a shareholder vote“As part of the leadership transition plan previously announced by Diamondback Energy, Inc. (the “Company”) in its Current Report on Form 8-K filed with the Securities and Exchange Commission (the “SEC”) on February 20, 2025 (the “Original Form 8-K”), Travis D. Stice stepped down as Executive Chairman of the Board of Directors of the Company (the “Board”) and became non-executive Chairman of the Board, in each case…”
  16. Jun 1, 2026InsiderOfficer sold ~$1M of FANG shares in the open market
  17. Jun 2, 2026Insider · Their largest sale since 2013Officer sold ~$1.41M of FANG shares in the open market
  18. Jun 3, 2026Insider · 2 peopleInsiders: 3 sales (~$4.2M)
  19. Jun 4, 2026Insider · 2 peopleInsiders: 2 sales (~$2.0B)
  20. Jun 5, 20265% stakeSGF FANG Holdings, LP filed an activist stake (13D) of 26.3%
View the official recordSEC Form 4

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Diamondback Energy

For Diamondback Energy, OQRO holds 23 insider filings (SEC Form 4 or Form 144) and 13 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its FANG page.

Other recent filings by Matt Zmigrosky, EVP, Chief Legal and Admin Off

The full history of Matt Zmigrosky, EVP, Chief Legal and Admin Off is on the profile page.

How this filing works

Other disclosures at Diamondback Energy

Everything OQRO holds on this company is on its FANG page.

This is one filing. OQRO holds the rest

Insider trades filed with the SEC, stock trades disclosed by members of Congress, fund holdings from 13F filings and federal contract awards, each one in plain words next to its official filing. On this page it opens why the trade stands out, what the company did around that time, the price since, and every field of the form.

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