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sellWeak cluster of 4

Thomas Kempster sold $10k of DTST

EVP at Data Storage Corp. 3,500 shares at an average of $2.93, traded Sep 11, 2026, filed Sep 14, 2026.

Warning score
35
Value
$10k
3,500 shares
Holdings after
18,500
-16% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    Director
    +15
  • Trade size
    $10k at market
    0
  • Share of holdings sold
    Sold 16% of holdings
    +5
  • Cluster
    4 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.

DTSTOct 12, 2026 · close 3.25
Since filing Sep 14, 2026: +10.9%SPY +2.5% · excess +8.4%

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 0001731122-26-001242, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 11, 2026SOpen-market sale
Common Stock
-3,500$2.93$10k18,50030 d ago

Related signals

Other insiders at Data Storage Corp and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
35Weak
DTSTsell 4
Data Storage Corp
John Argen
director
$8,910
3,000 shares
-14%
35Weak
DTSTsell 4
Data Storage Corp
Uwayne A. Mitchell
director
$8,850
3,000 shares
-14%
35Weak
DTSTsell 4
Data Storage Corp
Clifford Stein
director
$12k
3,991 shares
-18%
50Moderate
DTSTsell
Data Storage Corp
Charles M. Piluso
Chairman and CEO
$333k
86,958 shares
-28%
27Weak
DTSTsell 5
Data Storage Corp
Todd A. Correll
director
$52k
10,471 shares
-24%
35Weak
DTSTsell 5
Data Storage Corp
Lawrence A. Maglione
director
$108k
21,529 shares
-47%
49Moderate
DTSTsell 5
Data Storage Corp
Christos Panagiotakos
Chief Financial Officer
$55k
11,053 shares
-21%
36Weak
DTSTsell 5
Data Storage Corp
Thomas Kempster
EVP
$34k
6,846 shares
-1%
50Moderate
DTSTsell 5
Data Storage Corp
Charles M. Piluso
Chairman and CEO
$100k
20,089 shares
-5%
2Weak
DTSTsell 410b5-1
Data Storage Corp
Christos Panagiotakos
Chief Financial Officer
$7,231
2,003 shares
-5%

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.

Thomas Kempster sold $10k of DTST | InsiderTell