Skip to content
sellWeak cluster of 3

Diane L Dewbrey sold $36k of MBI

director at MBIA INC. 4,975 shares at an average of $7.15, traded Aug 21, 2025, filed Aug 25, 2025.

Warning score
36
Value
$36k
4,975 shares
Holdings after
105,017
-5% from before
From 52-week low
+123%
low $3.34, close $7.45
From 52-week high
0%
high $7.45, as of Aug 21, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $36k at market
    +6
  • Share of holdings sold
    Sold 4.5% of holdings
    0
  • Cluster
    3 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 -1.6%, 3m -3.2%, 6m -22.1%.

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.

MBIOct 12, 2026 · close 4.48
Since filing Aug 25, 2025: -42.0%SPY +22.7% · excess -64.7%

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 0000814585-25-000030, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 21, 2025SOpen-market sale
Common Stock
-4,975$7.15$36k105,017Aug 25, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
35Weak
MBIsell 2
MBIA INC
Theodore Shasta
director
$50k
6,382 shares
-11%
42Moderate
MBIsell 3
MBIA INC
Theodore Shasta
director
$56k
8,361 shares
-13%
45Moderate
MBIsell 3
MBIA INC
Theodore Shasta
director
$123k
20,000 shares
-24%
46Moderate
MBIsell 3
MBIA INC
Richard C Vaughan
director
$152k
25,086 shares
-22%
29Weak
MBIsell
MBIA INC
Richard C Vaughan
director
$84k
12,821 shares
-17%
30Weak
MBIsell
MBIA INC
Theodore Shasta
director
$118k
21,405 shares
-21%
30Weak
MBIsell
MBIA INC
Richard C Vaughan
director
$94k
15,000 shares
-15%

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.

Diane L Dewbrey sold $36k of MBI | InsiderTell