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sellModerate cluster of 10

Albert Barkmann sold $732k of FANG

Exec. VP and Chief Engineer at Diamondback Energy, Inc.. 4,000 shares at an average of $182.90, traded Mar 13, 2026, filed Mar 17, 2026.

Warning score
56
Value
$732k
4,000 shares
Holdings after
27,571
-13% from before
From 52-week low
+57%
low $114.81, close $180.38
From 52-week high
-0%
high $180.86, as of Mar 13, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $732k at market
    +21
  • Share of holdings sold
    Sold 13% of holdings
    +5
  • Cluster
    10 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.

This signal so far: 1m -0.3%, 3m +1.0%, 6m +14.2%.

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 Mar 17, 2026: +5.4%SPY +16.9% · excess -11.5%

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 0001539838-26-000050, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 13, 2026SOpen-market sale
Common Stock
-4,000$182.90$732k27,571Mar 17, 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%
60Notable
FANGsell 5
Diamondback Energy, Inc.
Daniel N Wesson
Exec. VP & COO
$1.6M
7,500 shares
-10%
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%

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.

Albert Barkmann sold $732k of FANG | InsiderTell