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sellWeak

Mark Robert Tobin sold $135k of LTBR

director at LIGHTBRIDGE Corp. 15,000 shares at an average of $8.99, traded Aug 11, 2026, filed Aug 12, 2026.

Warning score
31
Value
$135k
15,000 shares
Holdings after
66,669
-18% from before
From 52-week low
+26%
low $7.20, close $9.06
From 52-week high
-67%
high $27.72, as of Aug 11, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $135k at market
    +11
  • Share of holdings sold
    Sold 18% of holdings
    +5
  • 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.

LTBROct 12, 2026 · close 5.73
Since filing Aug 12, 2026: -35.5%SPY +1.0% · excess -36.5%

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 0000891839-26-000355, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 11, 2026SOpen-market sale
Common Stock
-15,000$8.99$135k66,669Aug 12, 2026

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
0Weak
LTBRsell10b5-1
LIGHTBRIDGE Corp
Sherri Goodman
director
$7,020
1,116 shares
-2%
0Weak
LTBRsell10b5-1
LIGHTBRIDGE Corp
Sweta Chakraborty
director
$5,327
717 shares
-1%
3Weak
LTBRsell 210b5-1
LIGHTBRIDGE Corp
Sweta Chakraborty
director
$11k
1,143 shares
-2%
3Weak
LTBRsell 210b5-1
LIGHTBRIDGE Corp
Sherri Goodman
director
$10k
1,116 shares
-2%
3Weak
LTBRsell 210b5-1
LIGHTBRIDGE Corp
Sherri Goodman
director
$11k
1,116 shares
-2%
13Weak
LTBRsell10b5-1
LIGHTBRIDGE Corp
Andrey Mushakov
EVP, Nuclear Operations
$502k
30,289 shares
-7%
28Weak
LTBRsell 310b5-1
LIGHTBRIDGE Corp
Larry Goldman
CFO
$160k
8,869 shares
-3%
10Weak
LTBRsell 310b5-1
LIGHTBRIDGE Corp
Jesse L. Funches
director
$25k
1,449 shares
-2%
10Weak
LTBRsell 310b5-1
LIGHTBRIDGE Corp
Sweta Chakraborty
director
$20k
1,245 shares
-2%
15Weak
LTBRsell 310b5-1
LIGHTBRIDGE Corp
Sweta Chakraborty
director
$25k
1,947 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.