Skip to content
sellWeak

Martin Brenner sold $1,296 of IBIO

See Remarks at iBio, Inc.. 4,881 shares at an average of $0.27, traded Nov 1, 2023, filed Nov 3, 2023.

Warning score
15
Value
$1,296
4,881 shares
Holdings after
182,502
-3% from before
From 52-week low
+4%
low $5.20, close $5.40
From 52-week high
-89%
high $49.20, as of Nov 1, 2023

Score components

  • Role
    Officer
    +15
  • Trade size
    $1k at market
    0
  • Share of holdings sold
    Sold 2.6% of holdings
    0
  • 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.

This signal so far: 1m -48.3%, 3m -81.0%, 6m -65.7%.

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.

IBIOOct 12, 2026 · close 0.90
Since filing Nov 3, 2023: -84.5%SPY +85.6% · excess -170.1%

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 0001104659-23-114269, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 1, 2023SOpen-market sale
Common Stock
-4,881$0.27$1,296182,502Nov 3, 2023

Related signals

Other insiders at iBio, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
48Moderate
IBIObuy 3
iBio, Inc.
Marc Banjak
Chief Legal Officer
$23k
13,934 shares
+126%
48Moderate
IBIObuy 3
iBio, Inc.
Martin Brenner
See Remarks
$25k
12,336 shares
+67%
62Notable
IBIObuy 3
iBio, Inc.
Felipe Duran
Chief Financial Officer
$50k
24,835 shares
+223%
45Moderate
IBIObuy 5
iBio, Inc.
David Arkowitz
director
$50k
18,382 shares
-
40Moderate
IBIObuy 5
iBio, Inc.
Marc Banjak
Chief Legal Officer
$25k
9,191 shares
+490%
40Moderate
IBIObuy 5
iBio, Inc.
Martin Brenner
See Remarks
$25k
9,191 shares
+101%
38Weak
IBIObuy 5
iBio, Inc.
William D Clark
director
$4,999
1,838 shares
-
47Moderate
IBIObuy 5
iBio, Inc.
Felipe Duran
Chief Financial Officer
$25k
9,191 shares
+472%

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.

Martin Brenner sold $1,296 of IBIO | InsiderTell