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sellWeak cluster of 610b5-1 plan

Jack R Lazar sold $374k of ALAB

director at Astera Labs, Inc.. 2,500 shares at an average of $149.55, traded Nov 20, 2025, filed Nov 21, 2025.

Warning score
25
Value
$374k
2,500 shares
Holdings after
94,851
-3% from before
From 52-week low
+163%
low $52.94, close $139.29
From 52-week high
-45%
high $251.88, as of Nov 20, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $374k at market
    +15
  • Share of holdings sold
    Sold 2.6% of holdings
    0
  • Cluster
    6 insiders selling within 14 days
    +15
  • 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.

ALABOct 9, 2026 · close 342.21
Since filing Nov 21, 2025: +141.3%SPY +19.4% · excess +121.9%

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 0001277624-25-000007, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 20, 2025SOpen-market sale
Common Stock10b5-1
-168$142.31$24k97,183Nov 21, 2025
Nov 20, 2025SOpen-market sale
Common Stock10b5-1
-461$143.60$66k96,722Nov 21, 2025
Nov 20, 2025SOpen-market sale
Common Stock10b5-1
-577$145.97$84k96,145Nov 21, 2025
Nov 20, 2025SOpen-market sale
Common Stock10b5-1
-168$147.58$25k95,977Nov 21, 2025
Nov 20, 2025SOpen-market sale
Common Stock10b5-1
-219$149.17$33k95,758Nov 21, 2025
Nov 20, 2025SOpen-market sale
Common Stock10b5-1
-166$152.67$25k95,592Nov 21, 2025
Nov 20, 2025SOpen-market sale
Common Stock10b5-1
-159$154.08$24k95,433Nov 21, 2025
Nov 20, 2025SOpen-market sale
Common Stock10b5-1
-286$157.85$45k95,147Nov 21, 2025
Nov 20, 2025SOpen-market sale
Common Stock10b5-1
-296$159.09$47k94,851Nov 21, 2025

Related signals

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

ScoreCompanyInsiderValueHoldingsFiled
25Weak
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%
38Weak
ALABsell 210b5-1
Astera Labs, Inc.
Jitendra Mohan
Chief Executive Officer
$21M
157,500 shares
-3%
24Weak
ALABsell 310b5-1
Astera Labs, Inc.
Jack R Lazar
director
$325k
2,500 shares
-3%
34Weak
ALABsell 310b5-1
Astera Labs, Inc.
Jack R Lazar
director
$898k
7,500 shares
-8%
35Weak
ALABsell 510b5-1
Astera Labs, Inc.
Philip Mazzara
General Counsel and Secretary
$1.2M
10,000 shares
-7%
62Notable
ALABsell 4
Astera Labs, Inc.
Michael Truett Tate
Chief Financial Officer
$1.5M
12,001 shares
-6%
65Notable
ALABsell 4
Astera Labs, Inc.
Jitendra Mohan
Chief Executive Officer
$12M
94,971 shares
-6%
49Moderate
ALABsell 4
Astera Labs, Inc.
Philip Mazzara
General Counsel and Secretary
$600k
4,849 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.

Jack R Lazar sold $374k of ALAB | InsiderTell