Skip to content
sellModerate

Ernst N Csiszar sold $2.4M of MTZ

director at MASTEC INC. 6,500 shares at an average of $371.17, traded Jun 3, 2026, filed Jun 5, 2026.

Warning score
50
Value
$2.4M
6,500 shares
Holdings after
10,816
-38% from before
From 52-week low
+135%
low $157.63, close $369.66
From 52-week high
-16%
high $437.51, as of Jun 3, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $2.4M at market
    +25
  • Share of holdings sold
    Sold 38% of holdings
    +10
  • Cluster
    No other insider selling within 14 days
    0

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.

MTZOct 13, 2026 · close 206.12
Since filing Jun 5, 2026: -43.4%SPY +6.0% · excess -49.4%

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 0000015615-26-000067, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jun 3, 2026SOpen-market sale
Common Stock
-6,500$371.17$2.4M10,816Jun 5, 2026

Related signals

Other insiders at MASTEC INC and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
40Moderate
MTZsell
MASTEC INC
C Robert Campbell
director
$1.3M
3,000 shares
-9%
29Weak
MTZsell
MASTEC INC
Javier Alberto Palomarez
director
$309k
950 shares
-8%
50Moderate
MTZsell
MASTEC INC
Ernst N Csiszar
director
$2.0M
6,500 shares
-27%
36Weak
MTZsell
MASTEC INC
Timothy Michael Love
CAO
$398k
1,929 shares
-17%
39Weak
MTZsell 2
MASTEC INC
C Robert Campbell
director
$421k
2,000 shares
-6%
33Weak
MTZsell 210b5-1
MASTEC INC
Robert E Apple
COO
$2.0M
10,000 shares
-5%
42Moderate
MTZsell 2
MASTEC INC
C Robert Campbell
director
$571k
3,000 shares
-8%
40Moderate
MTZsell
MASTEC INC
Alberto de Cardenas
EVP, General Counsel
$1.8M
10,000 shares
-9%
25Weak
MTZsell10b5-1
MASTEC INC
Robert E Apple
COO
$1.8M
10,000 shares
-5%
42Moderate
MTZsell
MASTEC INC
C Robert Campbell
director
$772k
5,000 shares
-12%

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.

Ernst N Csiszar sold $2.4M of MTZ | InsiderTell