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buyModerate

Leon O Moulder Jr bought $718k of ZBIO

Chief Executive Officer at Zenas BioPharma, Inc.. 70,000 shares at an average of $10.26, traded Dec 3, 2024, filed Dec 4, 2024.

Conviction score
57
Value
$718k
70,000 shares
Holdings after
241,155
+41% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    CEO
    +25
  • Trade size
    $718k at market
    +21
  • Relative to holdings
    Holdings up 41%
    +6
  • Price context
    No price history yet
    0
  • Cluster
    No other insider buying within 14 days
    0
  • Repeat buying
    2 buys in 90 days
    +5
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

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 -0.1%, 3m -29.3%, 6m -2.9%.

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.

ZBIOOct 9, 2026 · close 27.26
Since filing Dec 4, 2024: +177.0%SPY +31.1% · excess +145.9%

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 0001104659-24-125677, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 3, 2024POpen-market purchase
Common Stock
+25,000$10.76$269k196,155Dec 4, 2024
Dec 4, 2024POpen-market purchase
Common Stock
+45,000$9.98$449k241,155Dec 4, 2024

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
67Notable
ZBIObuy 2
Zenas BioPharma, Inc.
Hongbo Lu
director
$1.5M
75,000 shares
+22%
71Notable
ZBIObuy 2
Zenas BioPharma, Inc.
Leon O Moulder Jr
Chief Executive Officer
$1.0M
54,000 shares
+3%
64Notable
ZBIObuy 3
Zenas BioPharma, Inc.
Patricia L Allen
director
$500k
19,860 shares
-
60Notable
ZBIObuy 3
Zenas BioPharma, Inc.
Hongbo Lu
director
$585k
25,985 shares
+8%
81Strong
ZBIObuy 3
Zenas BioPharma, Inc.
Leon O Moulder Jr
Chief Executive Officer
$1.0M
57,000 shares
+16%
64Notable
ZBIObuy
Zenas BioPharma, Inc.
Leon O Moulder Jr
Chief Executive Officer
$1.6M
100,000 shares
+38%
58Moderate
ZBIObuy 5
Zenas BioPharma, Inc.
Patrick G Enright
director
$2.3M
117,255 shares
+7%
50Moderate
ZBIObuy 5
Zenas BioPharma, Inc.
Sr One Capital Management, LLC
owner
$2.4M
126,315 shares
+11%
58Moderate
ZBIObuy 5
Zenas BioPharma, Inc.
Jason Raleigh Nunn
director
$1.2M
63,158 shares
+6%
62Notable
ZBIObuy 5
Zenas BioPharma, Inc.
Fairmount Funds Management LLC
director
$6.0M
316,219 shares
+17%

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.