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sellNotable cluster of 5

Daniel N Wesson sold $1.6M of FANG

Exec. VP & COO at Diamondback Energy, Inc.. 7,500 shares at an average of $215.21, traded Aug 20, 2026, filed Aug 24, 2026.

Warning score
60
Value
$1.6M
7,500 shares
Holdings after
70,789
-10% from before
From 52-week low
+61%
low $131.37, close $211.02
From 52-week high
-0%
high $211.36, as of Aug 20, 2026

Score components

  • Role
    COO
    +20
  • Trade size
    $1.6M at market
    +25
  • Share of holdings sold
    Sold 9.6% of holdings
    0
  • Cluster
    5 insiders selling within 14 days
    +15

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

FANGOct 12, 2026 · close 195.11
Since filing Aug 24, 2026: -5.1%SPY +2.2% · excess -7.3%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001539838-26-000153, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 20, 2026SOpen-market sale
Common Stock
-7,500$215.21$1.6M70,789Aug 24, 2026

Related signals

Other insiders at Diamondback Energy, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
Pro nowfree Oct 14, 2026
FANGsell10b5-1
Diamondback Energy, Inc.
Charles Alvin Meloy
director
$6.1M
33,333 shares
-4%
57Moderate
FANGsell 4
Diamondback Energy, Inc.
SGF FANG Holdings, LP
owner
$1.9B
9,079,675 shares
-12%
57Moderate
FANGsell 4
Diamondback Energy, Inc.
SGF FANG Holdings, LP
owner
$1.9B
9,079,675 shares
-12%
55Moderate
FANGsell 4
Diamondback Energy, Inc.
Teresa L. Dick
EVP Accounting, Assist. Sec.
$1.1M
5,000 shares
-6%
44Moderate
FANGsell 4
Diamondback Energy, Inc.
Matt Zmigrosky
EVP, Chief Legal and Admin Off
$282k
1,326 shares
-3%
75Notable
FANGsell 4
Diamondback Energy, Inc.
Travis D. Stice
Chief Executive Officer
$15M
75,000 shares
-60%
42Moderate
FANGsell 5
Diamondback Energy, Inc.
Mark Lawrence Plaumann
director
$211k
1,000 shares
-7%
65Notable
FANGsell 5
Diamondback Energy, Inc.
Hof Matthew Kaes Van't
Chief Executive Officer
$2.1M
10,000 shares
-8%
47Moderate
FANGsell 6
Diamondback Energy, Inc.
Jere W Thompson III
CFO, Executive VP
$102k
500 shares
-3%
48Moderate
FANGsell 6
Diamondback Energy, Inc.
Matt Zmigrosky
EVP, Chief Legal and Admin Off
$507k
2,500 shares
-6%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Daniel N Wesson sold $1.6M of FANG | InsiderTell