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sellModerate cluster of 610b5-1 plan

Jack R Lazar sold $4.0M of ALAB

director at Astera Labs, Inc.. 22,500 shares at an average of $178.42, traded Aug 27, 2025, filed Aug 28, 2025.

Warning score
40
Value
$4.0M
22,500 shares
Holdings after
97,351
-19% from before
From 52-week low
+333%
low $41.36, close $179.20
From 52-week high
-7%
high $193.64, as of Aug 27, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $4.0M at market
    +25
  • Share of holdings sold
    Sold 19% of holdings
    +5
  • 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 Aug 28, 2025: +80.9%SPY +21.6% · excess +59.3%

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 0001736297-25-000122, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 27, 2025SOpen-market sale
Common Stock10b5-1
-1,553$176.73$274k118,298Aug 28, 2025
Aug 27, 2025SOpen-market sale
Common Stock10b5-1
-8,718$177.73$1.5M109,580Aug 28, 2025
Aug 27, 2025SOpen-market sale
Common Stock10b5-1
-8,706$178.83$1.6M100,874Aug 28, 2025
Aug 27, 2025SOpen-market sale
Common Stock10b5-1
-3,450$179.79$620k97,424Aug 28, 2025
Aug 27, 2025SOpen-market sale
Common Stock10b5-1
-73$183.09$13k97,351Aug 28, 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%
35Weak
ALABsell 310b5-1
Astera Labs, Inc.
Manuel Alba
director
$32M
183,000 shares
-10%
35Weak
ALABsell 610b5-1
Astera Labs, Inc.
Philip Mazzara
General Counsel and Secretary
$1.9M
10,000 shares
-6%
62Notable
ALABsell 6
Astera Labs, Inc.
Michael Truett Tate
Chief Financial Officer
$3.5M
18,861 shares
-7%
65Notable
ALABsell 6
Astera Labs, Inc.
Jitendra Mohan
Chief Executive Officer
$17M
91,441 shares
-4%
55Moderate
ALABsell 6
Astera Labs, Inc.
Philip Mazzara
General Counsel and Secretary
$1.3M
7,237 shares
-4%
60Notable
ALABsell 6
Astera Labs, Inc.
Sanjay Gajendra
President and COO
$17M
91,441 shares
-4%
67Notable
ALABsell 5
Astera Labs, Inc.
Michael Truett Tate
Chief Financial Officer
$19M
100,000 shares
-20%

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 $4.0M of ALAB | InsiderTell