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buyNotable cluster of 2

Paula Dowdy bought $104k of QSI

director at Quantum-Si Inc. 109,890 shares at an average of $0.95, traded Mar 5, 2026, filed Mar 9, 2026.

Conviction score
61
Value
$104k
109,890 shares
Holdings after
269,107
+69% from before
From 52-week low
+0%
low $0.91, close $0.91
From 52-week high
-65%
high $2.63, as of Mar 5, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $104k at market
    +10
  • Relative to holdings
    Holdings up 69%
    +10
  • Price context
    0% above the 52-week low; 65% below the 52-week high
    +18
  • Cluster
    2 insiders buying within 14 days
    +8
  • 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.

QSIOct 9, 2026 · close 1.53
Since filing Mar 9, 2026: +65.2%SPY +15.7% · excess +49.5%

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 0001140361-26-008320, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 5, 2026POpen-market purchase
Class A Common Stock
+109,890$0.95$104k269,107Mar 9, 2026

Related signals

Other insiders at Quantum-Si Inc and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
40Moderate
QSIsell 3
Quantum-Si Inc
Jeffrey Alan Hawkins
President & CEO
$23k
29,852 shares
-1%
37Weak
QSIsell 3
Quantum-Si Inc
Jeffry R. Keyes
Chief Financial Officer
$5,806
7,665 shares
-0%
30Weak
QSIsell 3
Quantum-Si Inc
Christian LaPointe
GC & Corp. Secretary
$11k
14,516 shares
-1%
40Moderate
QSIsell 4
Quantum-Si Inc
Jeffrey Alan Hawkins
President & CEO
$20k
23,777 shares
-1%
37Weak
QSIsell 4
Quantum-Si Inc
Jeffry R. Keyes
Chief Financial Officer
$7,246
8,655 shares
-0%
30Weak
QSIsell 4
Quantum-Si Inc
Christian LaPointe
GC & Corp. Secretary
$10k
11,959 shares
-1%
30Weak
QSIsell 4
Quantum-Si Inc
John S. Vieceli
Chief Product Officer
$18k
21,997 shares
-2%
68Notable
QSIbuy 2
Quantum-Si Inc
Charles R. Kummeth
director
$460k
500,000 shares
+141%
45Moderate
QSIsell 4
Quantum-Si Inc
Jeffrey Alan Hawkins
President & CEO
$30k
23,707 shares
-1%
37Weak
QSIsell 4
Quantum-Si Inc
Jeffry R. Keyes
Chief Financial Officer
$11k
8,627 shares
-1%

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.

Paula Dowdy bought $104k of QSI | InsiderTell