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sellModerate cluster of 410b5-1 plan

Stefan A Dyckerhoff sold $3.9M of ALAB

director at Astera Labs, Inc.. 12,499 shares at an average of $311.83, traded Aug 6, 2026, filed Aug 10, 2026.

Warning score
40
Value
$3.9M
12,499 shares
Holdings after
3,970
-22% from before
From 52-week low
+231%
low $100.27, close $331.50
From 52-week high
-31%
high $483.02, as of Aug 6, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $3.9M at market
    +25
  • Share of holdings sold
    Sold 22% of holdings
    +5
  • Cluster
    4 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 10, 2026: +7.9%SPY +1.0% · excess +6.9%

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 0001484394-26-000009, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 6, 2026SOpen-market sale
Common Stock10b5-1
-1,029$309.29$318k56,437Aug 10, 2026
Aug 6, 2026SOpen-market sale
Common Stockindirect: By Trust10b5-1
-2,447$309.29$757k308,952Aug 10, 2026
Aug 6, 2026SOpen-market sale
Common Stockindirect: By Limited Partnership (TF)10b5-1
-194$309.29$60k4,437Aug 10, 2026
Aug 6, 2026SOpen-market sale
Common Stock10b5-1
-269$311.37$84k56,168Aug 10, 2026
Aug 6, 2026SOpen-market sale
Common Stockindirect: By Trust10b5-1
-640$311.37$199k308,312Aug 10, 2026
Aug 6, 2026SOpen-market sale
Common Stockindirect: By Limited Partnership (TF)10b5-1
-51$311.37$16k4,386Aug 10, 2026
Aug 6, 2026SOpen-market sale
Common Stock10b5-1
-2,207$313.07$691k53,961Aug 10, 2026
Aug 6, 2026SOpen-market sale
Common Stockindirect: By Trust10b5-1
-5,246$313.07$1.6M303,066Aug 10, 2026
Aug 6, 2026SOpen-market sale
Common Stockindirect: By Limited Partnership (TF)10b5-1
-416$313.07$130k3,970Aug 10, 2026

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%
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%
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%
40Moderate
ALABsell 310b5-1
Astera Labs, Inc.
Stefan A Dyckerhoff
director
$5.6M
12,499 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.

Stefan A Dyckerhoff sold $3.9M of ALAB | InsiderTell