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Diamondback Energy, Inc.

FANG
Exchange
Nasdaq
Industry
Crude Petroleum & Natural Gas
SEC CIK
0001539838

In the last 90 days, Diamondback Energy, Inc. insiders filed 0 open-market purchases and 11 sales; 1,196 institutions reported holding it in 13F filings for Q2 2026, worth $35.4B in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Diamondback Energy, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
11 filings
9 insiders, $1.89B in total
Insiders trading
9
Net value
−$1.89B
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Diamondback Energy, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Diamondback Energy, Inc.
NameTitleLast reported holdingLast filingFilings, past year
Greth Lyndal10% Owner64,957,047Sep 17, 20267
SGF FANG Holdings, LP10% Owner64,957,047Sep 17, 20267
Zmigrosky MattEVP, Chief Legal and Admin Off36,705Sep 17, 202610
Dick Teresa L.EVP Accounting, Assist. Sec.75,755Sep 17, 20269
Meloy Charles AlvinDirector28,257Sep 17, 202611
Stice Travis D.Director49,727Sep 14, 20265
Barkmann AlbertExec. VP and Chief Engineer23,889Sep 14, 20264
Van't Hof Matthew KaesChief Executive Officer115,940Aug 24, 20268
Wesson Daniel NExec. VP & COO70,789Aug 24, 20265
Plaumann Mark LawrenceDirector12,437Aug 24, 20263
Thompson Jere W IIICFO, Executive VP18,475Aug 17, 20266
Holderness Darin GDirector2,798May 21, 20261
Reeves Robert KDirector6,066May 21, 20261
West Steven EDirector5,466May 21, 20262
Trent Melanie MontagueDirector15,039May 21, 20261
Klein Rebecca ADirector6,129May 21, 20261
Robertson Lance WDirector9,999May 21, 20261
Mains Stephanie K.Director11,635May 21, 20261
Brooks Vincent KDirector11,635IndirectMay 21, 20261
Tsuru Frank D.Director8,129May 21, 20261
McAllaster ChadEVP-Operations5,889Mar 3, 20261
Autry Stephens Management Trust10% Owner31,947,366IndirectSep 24, 20240
Endeavor Manager, LLC10% Owner31,947,366IndirectSep 24, 20240
Stephens Family Trust #210% Owner31,947,366IndirectSep 24, 20240
Stephens Family Trust10% Owner31,947,366IndirectSep 24, 20240
SFT 2 Holdings, LLC10% Owner31,947,366IndirectSep 24, 20240
SFT 1 Holdings, LLC10% Owner31,947,366IndirectSep 24, 20240
SFT Management, LLC10% Owner31,947,366IndirectSep 24, 20240
ACS Capital Management, LLC10% Owner31,947,366IndirectSep 24, 20240
ACS Capital Holdings, LP10% Owner31,947,366IndirectSep 24, 20240
Houston David LDirector12,600Jun 10, 20240
Soliman JenniferExec. VP and Chief HR Officer10,989Jan 12, 20230
Cross Michael PDirector13,538IndirectJun 13, 20220
Hawkins Thomas F.Exec. VP - Special Projects13,795Mar 3, 20220
Pantermuehl RussellExec. VP & Chief Engineer123,419Dec 9, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Sep 17, 2026 (view filing)5:12 PM ETSep 161 dayGreth Lyndal and 1 other10% OwnerSSale−9.08M$205.26−$1.86B−12.3%65.0M afterDuplicate filing
Sep 17, 2026 (view filing)5:08 PM ETSep 161 dayGreth Lyndal and 1 other10% OwnerSSale−9.08M$205.26−$1.86B−12.3%65.0M after
Sep 17, 2026 (view filing)4:03 PM ETSep 152 daysZmigrosky MattEVP, Chief Legal and Admin OffSSale−1.33K$212.56−$281.8K−3.5%36.7K after
Sep 17, 2026 (view filing)4:03 PM ETSep 152 daysDick Teresa L.EVP Accounting, Assist. Sec.SSale−5.00K$210.00−$1.05M−6.2%75.8K after
Sep 14, 2026 (view filing)4:07 PM ETSep 113 daysStice Travis D.DirectorSSale−75.0K$204.31−$15.3M−60.1%49.7K after
Aug 24, 2026 (view filing)4:01 PM ETAug 204 daysVan't Hof Matthew KaesChief Executive OfficerSSale−10.0K$214.66−$2.15M−7.9%115.9K after2 lots
Aug 24, 2026 (view filing)4:01 PM ETAug 204 daysWesson Daniel NExec. VP & COOSSale−7.50K$215.21−$1.61M−9.6%70.8K after
Aug 24, 2026 (view filing)4:01 PM ETAug 213 daysPlaumann Mark LawrenceDirectorSSale−1.00K$210.58−$210.6K−7.4%12.4K after
Aug 17, 2026 (view filing)4:02 PM ETAug 143 daysZmigrosky MattEVP, Chief Legal and Admin OffSSale−2.50K$202.77−$506.9K−6.0%38.9K after
Aug 17, 2026 (view filing)4:02 PM ETAug 143 daysThompson Jere W IIICFO, Executive VPSSale−500$204.14−$102.1K−2.6%18.5K after
Aug 12, 2026 (view filing)4:01 PM ETAug 111 dayVan't Hof Matthew KaesChief Executive OfficerSSale−5.00K$202.46−$1.01M−3.8%125.9K after
Aug 4, 2026 (view filing)4:01 PM ETAug 31 dayMeloy Charles AlvinDirectorSSale−33.3K$198.41−$6.61M−3.9%818.2K after4 lots10b5-1
Jun 17, 2026 (view filing)Jun 161 dayMeloy Charles AlvinDirectorSSale−83.3K$187.12−$15.6M−8.9%851.5K after3 lots10b5-1
Jun 10, 2026 (view filing)Jun 91 dayPlaumann Mark LawrenceDirectorSSale−500$196.50−$98.3K−3.6%13.4K after
Jun 8, 2026 (view filing)Jun 44 daysDick Teresa L.CAO, Exec. VP, Assist. Sec.SSale−5.00K$205.00−$1.02M−5.8%80.8K after
Jun 5, 2026 (view filing)4:05 PM ETJun 41 dayGreth Lyndal and 1 other10% OwnerSSale−10.0M$204.25−$2.04B−11.9%74.0M after
Jun 4, 2026 (view filing)Jun 31 dayVan't Hof Matthew KaesChief Executive OfficerSSale−15.0K$208.33−$3.13M−10.1%133.6K after2 lots
Jun 4, 2026 (view filing)Jun 31 dayZmigrosky MattEVP, Chief Legal and Admin OffSSale−5.00K$210.00−$1.05M−10.8%41.4K after
Jun 2, 2026 (view filing)Jun 2Same dayDick Teresa L.CAO, Exec. VP, Assist. Sec.SSale−7.00K$200.90−$1.41M−7.5%85.8K after
Jun 2, 2026 (view filing)Jun 11 dayZmigrosky MattEVP, Chief Legal and Admin OffSSale−5.00K$200.54−$1.00M−9.7%46.4K after
May 21, 2026 (view filing)May 192 daysDick Teresa L.CAO, Exec. VP, Assist. Sec.SSale−5.00K$207.00−$1.03M−5.1%92.8K after
May 19, 2026 (view filing)May 154 daysBarkmann AlbertExec. VP and Chief EngineerSSale−3.00K$204.04−$612.1K−10.9%24.6K after
May 19, 2026 (view filing)May 154 daysThompson Jere W IIICFO, Executive VPSSale−1.00K$203.16−$203.2K−5.0%19.0K after
May 14, 2026 (view filing)May 131 dayZmigrosky MattEVP, Chief Legal and Admin OffSSale−5.00K$200.10−$1.00M−8.9%51.4K after
May 14, 2026 (view filing)May 14Same dayDick Teresa L.CAO, Exec. VP, Assist. Sec.SSale−5.00K$200.00−$1.00M−4.9%97.8K after
May 11, 2026 (view filing)May 7-84 daysMeloy Charles AlvinDirectorSSale−15.7K$189.14−$2.97M−1.7%934.9K after7 lots10b5-1
Apr 8, 2026 (view filing)Apr 6-72 daysMeloy Charles AlvinDirectorSSale−15.7K$195.47−$3.07M−1.6%950.6K after7 lots10b5-1
Mar 24, 2026 (view filing)Mar 204 daysWesson Daniel NExec. VP & COOSSale−5.00K$191.96−$959.8K−6.0%78.3K after
Mar 24, 2026 (view filing)Mar 204 daysDick Teresa L.CAO, Exec. VP, Assist. Sec.SSale−5.00K$193.00−$965.0K−4.6%102.8K after
Mar 19, 2026 (view filing)Mar 181 dayWest Steven EDirectorSSale−6.00K$188.35−$1.13M−57.2%4.48K after
Mar 19, 2026 (view filing)Mar 181 dayZmigrosky MattEVP, Chief Legal and Admin OffSSale−4.10K$190.51−$781.3K−6.8%56.4K after
Mar 19, 2026 (view filing)Mar 181 dayDick Teresa L.CAO, Exec. VP, Assist. Sec.SSale−5.00K$190.00−$950.0K−4.4%107.8K after
Mar 17, 2026 (view filing)Mar 134 daysZmigrosky MattEVP, Chief Legal and Admin OffSSale−20.9K$180.00−$3.76M−25.7%60.5K after
Mar 17, 2026 (view filing)Mar 161 dayThompson Jere W IIICFO, Executive VPSSale−750$182.47−$136.9K−3.6%20.0K after
Mar 17, 2026 (view filing)Mar 134 daysBarkmann AlbertExec. VP and Chief EngineerSSale−4.00K$182.90−$731.6K−12.7%27.6K after
Mar 16, 2026 (view filing)4:31 PM ETMar 124 daysGreth Lyndal and 1 other10% OwnerSSale−12.7M$170.19−$2.15B−13.1%84.0M after
Mar 11, 2026 (view filing)Mar 9-102 daysMeloy Charles AlvinDirectorSSale−15.7K$181.50−$2.85M−1.6%966.3K after13 lots10b5-1
Mar 10, 2026 (view filing)Mar 64 daysThompson Jere W IIICFO, Executive VPSSale−750$181.68−$136.3K−3.5%20.7K after
Mar 10, 2026 (view filing)Mar 64 daysWesson Daniel NExec. VP & COOSSale−20.0K$181.11−$3.62M−19.4%83.3K after2 lots
Mar 10, 2026 (view filing)Mar 64 daysStice Travis D.Executive ChairmanSSale−64.0K$181.16−$11.6M−17.3%305.3K after2 lots
Mar 10, 2026 (view filing)Mar 64 daysStice Travis D.Executive ChairmanSSale−36.0K$181.08−$6.53M−22.6%123.7K after2 lots
Mar 10, 2026 (view filing)Mar 64 daysVan't Hof Matthew KaesChief Executive OfficerSSale−10.0K$180.84−$1.81M−6.3%148.6K after
Mar 10, 2026 (view filing)Mar 6-94 daysDick Teresa L.CAO, Exec. VP, Assist. Sec.SSale−5.50K$183.07−$1.01M−4.7%112.8K after2 lots
Mar 5, 2026 (view filing)4:15 PM ETMar 41 dayGreth Lyndal and 1 other10% OwnerSSale−1.00M$176.71−$176.7M−1.0%96.7M after
Feb 5, 2026 (view filing)4:15 PM ETFeb 3-42 daysGreth Lyndal and 1 other10% OwnerSSale−2.00M$165.94−$331.9M−2.0%97.7M after2 lots
Feb 4, 2026 (view filing)Feb 2-32 daysMeloy Charles AlvinDirectorSSale−62.8K$161.09−$10.1M−6.0%982.0K after4 lots10b5-1
Dec 10, 2025 (view filing)Dec 82 daysMeloy Charles AlvinDirectorSSale−53$160.13−$8.49K0.0%1.04M after10b5-1
Dec 8, 2025 (view filing)Dec 44 daysMeloy Charles AlvinDirectorSSale−377.9K$138.61−$52.4M−26.6%1.04M after
Dec 2, 2025 (view filing)5:02 PM ETNov 284 daysGreth Lyndal and 1 other10% OwnerSSale−2.00M$152.59−$305.2M−2.0%99.7M after
Dec 1, 2025 (view filing)Nov 265 daysWesson Daniel NExec. VP & COOSSale−4.00K$149.24−$597.0K−4.8%80.1K after