Diamondback Energy, Inc. (FANG) Insider Trading
Over the last 3 months, FANG insiders made 0 open-market buys and 20 sales, a net sale of -$2.1B (SEC Form 4). Over the last 6 months, 881 institutions increased and 849 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
20
Net (3m)
-$2.1B
Insider trades by month Buys Sells
Feb
Mar
Apr
May
Jun
Aug
Context3-month price -0.1%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 24, 2026 | Plaumann Mark Lawrencedirector | Sell | 1,000 | $210.58 |
| Aug 24, 2026 | Van't Hof Matthew Kaesdirector, officer: Chief Executive Officer | Sell | 9,500 | $214.64 |
| Aug 24, 2026 | Wesson Daniel Nofficer: Exec. VP & COO | Sell | 7,500 | $215.21 |
| Aug 24, 2026 | Van't Hof Matthew Kaesdirector, officer: Chief Executive Officer | Sell | 500 | $215.06 |
| Aug 17, 2026 | Zmigrosky Mattofficer: EVP, Chief Legal and Admin Off | Sell | 2,500 | $202.77 |
| Aug 17, 2026 | Thompson Jere W IIIofficer: CFO, Executive VP | Sell | 500 | $204.14 |
| Aug 12, 2026 | Van't Hof Matthew Kaesdirector, officer: Chief Executive Officer | Sell | 5,000 | $202.46 |
| Aug 4, 2026 | Meloy Charles Alvindirector | Sell | 3,986 | $197.06 |
| Aug 4, 2026 | Meloy Charles Alvindirector | Sell | 2,730 | $199.44 |
| Aug 4, 2026 | Meloy Charles Alvindirector | Sell | 19,055 | $198.74 |
| Aug 4, 2026 | Meloy Charles Alvindirector | Sell | 7,562 | $197.91 |
| Jun 17, 2026 | Meloy Charles Alvindirector | Sell | 4,049 | $187.68 |
| Jun 17, 2026 | Meloy Charles Alvindirector | Sell | 14,538 | $186.37 |
| Jun 17, 2026 | Meloy Charles Alvindirector | Sell | 64,747 | $187.25 |
| Jun 10, 2026 | Plaumann Mark Lawrencedirector | Sell | 500 | $196.50 |
| Jun 8, 2026 | Dick Teresa L.officer: CAO, Exec. VP, Assist. Sec. | Sell | 5,000 | $205.00 |
| Jun 5, 2026 | SGF FANG Holdings, LP10 percent owner | Sell | 10,000,000 | $204.25 |
| Jun 4, 2026 | Zmigrosky Mattofficer: EVP, Chief Legal and Admin Off | Sell | 5,000 | $210.00 |
| Jun 4, 2026 | Van't Hof Matthew Kaesdirector, officer: Chief Executive Officer | Sell | 5,000 | $205.00 |
| Jun 4, 2026 | Van't Hof Matthew Kaesdirector, officer: Chief Executive Officer | Sell | 10,000 | $210.00 |
| Jun 2, 2026 | Zmigrosky Mattofficer: EVP, Chief Legal and Admin Off | Sell | 5,000 | $200.54 |
| Jun 2, 2026 | Dick Teresa L.officer: CAO, Exec. VP, Assist. Sec. | Sell | 7,000 | $200.90 |
| May 21, 2026 | Dick Teresa L.officer: CAO, Exec. VP, Assist. Sec. | Sell | 5,000 | $207.00 |
| May 21, 2026 | REEVES ROBERT Kdirector | Grant | 982 | — |
| May 21, 2026 | Robertson Lance Wdirector | Grant | 982 | — |
| May 21, 2026 | Stice Travis D.director | Grant | 982 | — |
| May 21, 2026 | Meloy Charles Alvindirector | Grant | 982 | — |
| May 21, 2026 | KLEIN REBECCA Adirector | Grant | 982 | — |
| May 21, 2026 | Mains Stephanie K.director | Grant | 982 | — |
| May 21, 2026 | Brooks Vincent Kdirector | Grant | 982 | — |
Source: FANG SEC Form 4 filings, latest Aug 24, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their FANG positions over the last 6 months (SEC Form 13F).
Increased
881
New positions
346
Reduced
849
Sold out
129
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 18.8M | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 18.5M | May 13, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 16.4M | Aug 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 12.8M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 12.7M | May 15, 2026 |
| STATE STREET CORP | Increased | 12.6M | Aug 7, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 12.5M | May 15, 2026 |
| STATE STREET CORP | Increased | 12.1M | May 15, 2026 |
| Invesco Ltd. | Increased | 11.2M | Aug 14, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 9.7M | May 8, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 9.7M | Aug 13, 2026 |
| Capital World Investors | Increased | 8.9M | Aug 12, 2026 |
| JPMORGAN CHASE & CO | Increased | 6.3M | May 13, 2026 |
| INVESCO LTD. | Reduced | 5.9M | Jul 15, 2026 |
| Boston Partners | Increased | 5.9M | Aug 4, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.