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buyNotable cluster of 4

Judith Anne Shizuru bought $100k of JSPR

director at Jasper Therapeutics, Inc.. 41,000 shares at an average of $2.43, traded Sep 22, 2025, filed Sep 24, 2025.

Conviction score
64
Value
$100k
41,000 shares
Holdings after
156,901
+35% from before
From 52-week low
+9%
low $2.33, close $2.54
From 52-week high
-90%
high $24.73, as of Sep 22, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $100k at market
    +10
  • Relative to holdings
    Holdings up 35%
    +6
  • Price context
    9% above the 52-week low; 90% below the 52-week high
    +18
  • Cluster
    4 insiders buying within 14 days
    +15
  • Repeat buying
    First buy in 90 days
    0
  • 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.

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.

JSPROct 9, 2026 · close 0.57
Since filing Sep 24, 2025: -75.5%SPY +19.0% · excess -94.6%

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 0001213900-25-091096, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Sep 22, 2025POpen-market purchase
Voting Common Stock
+41,000$2.43$100k156,901Sep 24, 2025
Sep 22, 2025POpen-market purchase
Common Stock Warrant (right to buy)derivative
+41,000--41,000Sep 24, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
78Notable
JSPRbuy 4
Jasper Therapeutics, Inc.
Ron Martell
President and CEO
$100k
41,000 shares
+124%
63Notable
JSPRbuy 4
Jasper Therapeutics, Inc.
Svetlana Lucas
director
$49k
20,000 shares
-
66Notable
JSPRbuy 4
Jasper Therapeutics, Inc.
Thomas G Wiggans
director
$100k
41,000 shares
-
0Weak
JSPRsell10b5-1
Jasper Therapeutics, Inc.
Jeetinder Singh Mahal
Chief Operating Officer
$20k
900 shares
-3%

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.

Judith Anne Shizuru bought $100k of JSPR | InsiderTell