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sellWeak cluster of 210b5-1 plan

Robert Ainscow sold $1.1M of ASPI

Chief Operating Officer at ASP Isotopes Inc.. 200,000 shares at an average of $5.61, traded Apr 15, 2025, filed Apr 17, 2025.

Warning score
38
Value
$1.1M
200,000 shares
Holdings after
1,419,992
-12% from before
From 52-week low
+127%
low $2.52, close $5.72
From 52-week high
-35%
high $8.77, as of Apr 15, 2025

Score components

  • Role
    COO
    +20
  • Trade size
    $1.1M at market
    +25
  • Share of holdings sold
    Sold 12% of holdings
    +5
  • Cluster
    2 insiders selling within 14 days
    +8
  • 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 +24.8%, 3m +65.2%, 6m +89.2%.

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 12, 2026 · close 2.44
Since filing Apr 17, 2025: -58.2%SPY +50.3% · excess -108.5%

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 0001477932-25-002834, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Apr 15, 2025SOpen-market sale
Common Stock10b5-1
-66,666$5.75$384k1,553,326Apr 17, 2025
Apr 16, 2025SOpen-market sale
Common Stock10b5-1
-66,666$5.45$363k1,486,660Apr 17, 2025
Apr 17, 2025SOpen-market sale
Common Stock10b5-1
-66,668$5.62$375k1,419,992Apr 17, 2025

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.

Robert Ainscow sold $1.1M of ASPI | InsiderTell