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sellModerate cluster of 5

Philip Mazzara sold $232k of ALAB

General Counsel and Secretary at Astera Labs, Inc.. 796 shares at an average of $291.03, traded May 21, 2026, filed May 26, 2026.

Warning score
43
Value
$232k
796 shares
Holdings after
103,343
-1% from before
From 52-week low
+247%
low $85.95, close $297.84
From 52-week high
0%
high $297.84, as of May 21, 2026

Score components

  • Role
    Officer
    +15
  • Trade size
    $232k at market
    +13
  • Share of holdings sold
    Sold 0.8% of holdings
    0
  • Cluster
    5 insiders selling within 14 days
    +15

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.

ALABOct 9, 2026 · close 342.21
Since filing May 26, 2026: +7.4%SPY +4.2% · excess +3.2%

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 0001998163-26-000019, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 21, 2026SOpen-market sale
Common Stock
-796$291.03$232k103,343May 26, 2026

Related signals

Other insiders at Astera Labs, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
Pro nowfree Oct 16, 2026
ALABsell10b5-1
Astera Labs, Inc.
Stefan A Dyckerhoff
director
$4.7M
12,499 shares
-25%
33Weak
ALABsell 210b5-1
Astera Labs, Inc.
Manuel Alba
director
$51M
183,000 shares
-14%
33Weak
ALABsell 210b5-1
Astera Labs, Inc.
Stefan A Dyckerhoff
director
$3.4M
12,499 shares
-23%
65Notable
ALABsell 4
Astera Labs, Inc.
Jitendra Mohan
Chief Executive Officer
$31M
90,630 shares
-7%
55Moderate
ALABsell 4
Astera Labs, Inc.
Philip Mazzara
General Counsel and Secretary
$2.3M
6,801 shares
-7%
60Notable
ALABsell 4
Astera Labs, Inc.
Sanjay Gajendra
President and COO
$31M
90,630 shares
-7%
40Moderate
ALABsell 410b5-1
Astera Labs, Inc.
Stefan A Dyckerhoff
director
$3.9M
12,499 shares
-22%
35Weak
ALABsell 310b5-1
Astera Labs, Inc.
Manuel Alba
director
$61M
136,974 shares
-10%
35Weak
ALABsell 310b5-1
Astera Labs, Inc.
Manuel Alba
director
$17M
37,535 shares
-3%
35Weak
ALABsell 310b5-1
Astera Labs, Inc.
Manuel Alba
director
$3.9M
8,491 shares
-3%

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.