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sellWeak cluster of 610b5-1 plan

Manuel Alba sold $25M of ALAB

director at Astera Labs, Inc.. 150,000 shares at an average of $166.18, traded Dec 1, 2025, filed Dec 3, 2025.

Warning score
35
Value
$25M
150,000 shares
Holdings after
1,574,498
-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
    $24.9M at market
    +25
  • Share of holdings sold
    Sold 8.7% 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 0001134727-25-000006, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-4,504$153.80$693k1,719,994Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-3,232$154.74$500k1,716,762Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-1,062$155.50$165k1,715,700Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-807$156.88$127k1,714,893Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-425$158.11$67k1,714,468Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-963$159.29$153k1,713,505Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-1,068$160.54$171k1,712,437Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-4,076$161.63$659k1,708,361Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-2,322$162.52$377k1,706,039Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-10,732$163.68$1.8M1,695,307Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-12,468$164.60$2.1M1,682,839Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-38,644$165.39$6.4M1,644,195Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-12,868$166.67$2.1M1,631,327Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-11,158$167.52$1.9M1,620,169Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-4,582$168.57$772k1,615,587Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-8,872$169.84$1.5M1,606,715Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-13,722$170.63$2.3M1,592,993Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-12,186$171.57$2.1M1,580,807Dec 3, 2025
Dec 1, 2025SOpen-market sale
Common Stockindirect: By Alba Trust10b5-1
-6,309$172.58$1.1M1,574,498Dec 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
$5.5M
33,000 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 $25M of ALAB | InsiderTell