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buyNotable cluster of 3

Marcio Souza bought $60k of PRAX

Chief Executive Officer at Praxis Precision Medicines, Inc.. 70,002 shares at an average of $0.86, traded Mar 23, 2023, filed Mar 27, 2023.

Conviction score
71
Value
$60k
70,002 shares
Holdings after
35,002
+37% from before
From 52-week low
0%
low $12.81, close $12.81
From 52-week high
-93%
high $173.55, as of Mar 23, 2023

Score components

  • Role
    CEO
    +25
  • Trade size
    $60k at market
    +7
  • Relative to holdings
    Holdings up 37%
    +6
  • Price context
    0% above the 52-week low; 93% below the 52-week high
    +18
  • Cluster
    3 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.

PRAXOct 14, 2026 · close 239.02
Since filing Mar 27, 2023: +1670.5%SPY +102.7% · excess +1567.8%

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 0001104659-23-037023, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Mar 23, 2023POpen-market purchase
Common Stock
+35,000$0.86$30k226,299Mar 27, 2023
Mar 23, 2023POpen-market purchase
Common Stockindirect: Held by spouse
+35,002$0.86$30k35,002Mar 27, 2023

Related signals

Other insiders at Praxis Precision Medicines, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
25Weak
PRAXsell10b5-1
Praxis Precision Medicines, Inc.
Jill DeSimone
director
$3.6M
11,600 shares
-83%
53Moderate
PRAXsell 2
Praxis Precision Medicines, Inc.
Lauren Mastrocola
Principal Accounting Officer
$2.6M
13,600 shares
-57%
53Moderate
PRAXsell 2
Praxis Precision Medicines, Inc.
Alex Nemiroff
General Counsel and Secretary
$4.9M
25,130 shares
-55%
42Moderate
PRAXsell
Praxis Precision Medicines, Inc.
Adage Capital Management, L.P.
owner
$33M
313,910 shares
-13%
34Weak
PRAXsell 2
Praxis Precision Medicines, Inc.
Lauren Mastrocola
Principal Accounting Officer
$424k
5,188 shares
-48%
38Weak
PRAXsell 2
Praxis Precision Medicines, Inc.
Alex Nemiroff
General Counsel and Secretary
$661k
8,239 shares
-44%
39Weak
PRAXbuy
Praxis Precision Medicines, Inc.
Marcio Souza
Chief Executive Officer
$11k
10,000 shares
+29%
61Notable
PRAXbuy 3
Praxis Precision Medicines, Inc.
Timothy Edwin Kelly
Chief Financial Officer
$6,998
8,000 shares
+21%
61Notable
PRAXbuy 3
Praxis Precision Medicines, Inc.
Timothy Edwin Kelly
Chief Financial Officer
$6,998
8,000 shares
+21%
64Notable
PRAXbuy 3
Praxis Precision Medicines, Inc.
Dean J Mitchell
director
$42k
50,000 shares
+200%

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.

Marcio Souza bought $60k of PRAX | InsiderTell