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sellWeak10b5-1 plan

Gina Mazzariello sold $246k of AMLX

Chief Legal Officer at Amylyx Pharmaceuticals, Inc.. 30,000 shares at an average of $8.20, traded Aug 12, 2025, filed Aug 14, 2025.

Warning score
13
Value
$246k
30,000 shares
Holdings after
156,969
-16% from before
From 52-week low
+229%
low $2.49, close $8.20
From 52-week high
-3%
high $8.43, as of Aug 12, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $246k at market
    +13
  • Share of holdings sold
    Sold 16% of holdings
    +5
  • Cluster
    No other insider selling within 14 days
    0
  • 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.

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.

AMLXOct 9, 2026 · close 28.14
Since filing Aug 14, 2025: +234.6%SPY +22.4% · excess +212.2%

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 0000950170-25-108912, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 12, 2025SOpen-market sale
Common Stock10b5-1
-15,000$8.07$121k171,969Aug 14, 2025
Aug 13, 2025SOpen-market sale
Common Stock10b5-1
-15,000$8.34$125k156,969Aug 14, 2025

Related signals

Other insiders at Amylyx Pharmaceuticals, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
18Weak
AMLXsell10b5-1
Amylyx Pharmaceuticals, Inc.
George M Milne Jr
director
$831k
30,000 shares
-4%
65Notable
AMLXsell 5
Amylyx Pharmaceuticals, Inc.
Justin B. Klee
Co-Chief Executive Officer
$980k
30,464 shares
-1%
65Notable
AMLXsell 5
Amylyx Pharmaceuticals, Inc.
Joshua B Cohen
Co-Chief Executive Officer
$981k
30,464 shares
-1%
44Moderate
AMLXsell 5
Amylyx Pharmaceuticals, Inc.
Gina Mazzariello
Chief Legal Officer
$310k
9,536 shares
-5%
52Moderate
AMLXsell 5
Amylyx Pharmaceuticals, Inc.
James M Frates
Chief Financial Officer
$350k
10,810 shares
-4%
44Moderate
AMLXsell 5
Amylyx Pharmaceuticals, Inc.
Camille L Bedrosian
Chief Medical Officer
$325k
10,028 shares
-3%
32Weak
AMLXbuy
Amylyx Pharmaceuticals, Inc.
Karen Firestone
director
$101k
8,100 shares
+15%
25Weak
AMLXsell
Amylyx Pharmaceuticals, Inc.
Camille L Bedrosian
Chief Medical Officer
$94k
6,580 shares
-4%
42Moderate
AMLXsell 5
Amylyx Pharmaceuticals, Inc.
Camille L Bedrosian
Chief Medical Officer
$176k
12,039 shares
-6%
57Moderate
AMLXsell 5
Amylyx Pharmaceuticals, Inc.
Joshua B Cohen
Co-Chief Executive Officer
$429k
29,933 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.

Gina Mazzariello sold $246k of AMLX | InsiderTell