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sellWeak cluster of 610b5-1 plan

Manuel Alba sold $5.5M of ALAB

director at Astera Labs, Inc.. 33,000 shares at an average of $166.18, traded Dec 1, 2025, filed Dec 3, 2025.

Warning score
35
Value
$5.5M
33,000 shares
Holdings after
352,863
-9% from before
From 52-week low
+212%
low $52.94, close $165.19
From 52-week high
-34%
high $251.88, as of Dec 1, 2025

Score components

  • Role
    Director
    +15
  • Trade size
    $5.5M at market
    +25
  • Share of holdings sold
    Sold 8.6% 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 Dec 3, 2025: +124.4%SPY +15.1% · excess +109.3%

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 0001134727-25-000007, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-991$153.80$152k384,872Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-711$154.74$110k384,161Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-234$155.50$36k383,927Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-178$156.88$28k383,749Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-93$158.11$15k383,656Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-212$159.29$34k383,444Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-235$160.54$38k383,209Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-897$161.63$145k382,312Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-510$162.52$83k381,802Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-2,362$163.68$387k379,440Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-2,742$164.60$451k376,698Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-8,502$165.39$1.4M368,196Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-2,831$166.67$472k365,365Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-2,455$167.52$411k362,910Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-1,008$168.57$170k361,902Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-1,952$169.84$332k359,950Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-3,019$170.63$515k356,931Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-2,680$171.57$460k354,251Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Casa Alameda 2007, LLC10b5-1
-1,388$172.57$240k352,863Dec 3, 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 610b5-1
Astera Labs, Inc.
Manuel Alba
director
$25M
150,000 shares
-9%
25Weak
ALABsell 610b5-1
Astera Labs, Inc.
Jack R Lazar
director
$374k
2,500 shares
-3%
62Notable
ALABsell 6
Astera Labs, Inc.
Michael Truett Tate
Chief Financial Officer
$1.7M
11,430 shares
-6%
65Notable
ALABsell 6
Astera Labs, Inc.
Jitendra Mohan
Chief Executive Officer
$13M
90,459 shares
-4%
50Moderate
ALABsell 6
Astera Labs, Inc.
Philip Mazzara
General Counsel and Secretary
$668k
4,620 shares
-3%
60Notable
ALABsell 6
Astera Labs, Inc.
Sanjay Gajendra
President and COO
$13M
90,459 shares
-5%
20Weak
ALABsell10b5-1
Astera Labs, Inc.
Philip Mazzara
General Counsel and Secretary
$1.9M
10,000 shares
-6%

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.

Manuel Alba sold $5.5M of ALAB | InsiderTell