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sellWeak cluster of 310b5-1 plan

Duncan Moore sold $61k of ASPI

director at ASP Isotopes Inc.. 11,642 shares at an average of $5.21, traded Apr 16, 2026, filed Apr 17, 2026.

Warning score
17
Value
$61k
11,642 shares
Holdings after
1,044,928
-1% from before
From 52-week low
+26%
low $4.07, close $5.11
From 52-week high
-64%
high $14.05, as of Apr 16, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $61k at market
    +7
  • Share of holdings sold
    Sold 1.1% of holdings
    0
  • Cluster
    3 insiders selling within 14 days
    +15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

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 +8.0%, 3m -27.8%, 6m -.

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.

ASPIOct 9, 2026 · close 2.65
Since filing Apr 17, 2026: -50.7%SPY +10.1% · excess -60.8%

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 0001477932-26-002387, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 12, 2025AGrant or award
Common Stock10b5-1
+25,469--1,020,022Apr 17, 2026
Dec 18, 2025AGrant or award
Common Stock10b5-1
+36,548--1,056,570Apr 17, 2026
Apr 16, 2026SOpen-market sale
Common Stock10b5-1
-11,642$5.21$61k1,044,928Apr 17, 2026

Related signals

Other insiders at ASP Isotopes Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
44Moderate
ASPIbuy
ASP Isotopes Inc.
Robert John Andrew Ryan
director
$40k
15,000 shares
+2%
33Weak
ASPIbuy
ASP Isotopes Inc.
Robert John Andrew Ryan
director
$22k
8,000 shares
+1%
21Weak
ASPIsell 310b5-1
ASP Isotopes Inc.
Robert Ainscow
COO
$36k
8,438 shares
-0%
45Moderate
ASPIsell 310b5-1
ASP Isotopes Inc.
Paul Elliot Mann
Chairman and CEO
$999k
251,275 shares
-3%
25Weak
ASPIsell 310b5-1
ASP Isotopes Inc.
Robert Ainscow
COO
$98k
25,000 shares
-1%
39Weak
ASPIsell 3
ASP Isotopes Inc.
Donald George Ainscow
EVP, Gen Counsel, Secretary
$92k
23,678 shares
-3%
55Moderate
ASPIsell 4
ASP Isotopes Inc.
Donald George Ainscow
EVP, Gen Counsel, Secretary
$614k
100,000 shares
-11%
28Weak
ASPIsell 410b5-1
ASP Isotopes Inc.
Heather Kiessling
Chief Financial Officer
$145k
23,124 shares
-1%
52Moderate
ASPIsell 4
ASP Isotopes Inc.
Michael Gorley
director
$188k
30,000 shares
-25%
55Moderate
ASPIsell 4
ASP Isotopes Inc.
Todd Wider
director
$619k
100,000 shares
-13%

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.

Duncan Moore sold $61k of ASPI | InsiderTell