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144 ·Filed Oct 7, 2026

ALAB

Astera Labs, Inc.
NEUTRAL
Impact 2/10
Horizondays Processed20d 17h ago SEC0001973251-26-000040
Form 144, notice of proposed sale of securities
Actionable Insight • Neutral

This is a standard affiliate sale notice with no material operational signal. The seller is a venture-affiliated holder, not management. Monitor for any subsequent Form 4 filings to confirm execution, but no immediate trading catalyst.

DirectionNeutral
Confidencehigh
Horizondays
Latest settled: T+5d
ALAB ▼ -12.99% at T+5d
NEUTRAL call -12.99% · α vs SPY -12.71% · entry $347.05 → $301.98
Next anchor: T+20d in 7d
Latest observation: T+11 -7.91% FF3 residual α
Entry = T+0 close
Oct 7, 2026
via day close
T+1d
-1.39%
call -1.39% · α -1.99%
$342.21
settled 20d ago
T+5d
-12.99%
call -12.99% · α -12.71%
$301.98
settled 14d ago
T+20d
Pending
in 7d
T+60d
Pending
in 2mo

Price Chart

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Executive Summary

Stefan A. Dyckerhoff, an affiliate of Astera Labs, filed a Form 144 notice of intent to sell 12,499 shares of common stock, with an approximate market value of $4.7 million based on the filing date. The shares were acquired through a pro-rata distribution from a venture fund, a private placement, and cash purchases dating back to 2019-2024. This is a routine insider sale notice from a venture-affiliated holder, not an executive officer, and does not signal operational concerns.

Key Facts

  • Stefan A. Dyckerhoff, an affiliate, filed Form 144 to sell 12,499 shares of Astera Labs common stock.
  • Estimated aggregate market value of the proposed sale is approximately $4.7 million.
  • Shares were acquired via pro-rata distribution from Sutter Hill Ventures (8,333 shares), private placement (3,505 shares via IRA, 661 shares via limited partnership), and cash purchase.
  • The sale is proposed to occur on or after October 7, 2026, through Stifel Nicolaus & Company.
  • Mr. Dyckerhoff is not an executive officer (CEO/CFO) but an affiliate/venture-related holder.
  • The filing notes that 8,333 shares are held by a trust where Mr. Dyckerhoff is trustee; 3,505 by his IRA; and 661 by a limited partnership.

Financial Impact

Proposed sale of 12,499 shares valued at approximately $4.7 million, representing a small fraction of the company's market cap.

dilution

Risk Factors

  • Insider selling may create short-term overhang if executed, but the size is small relative to float.
  • No indication of operational deterioration; this appears to be routine portfolio diversification.

Investment Themes

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
144 Filing (Primary)0001973251-26-000040
Document: 0001973251-26-000040-index.html0001973251-26-000040
Document: 0001973251-26-000040.txt0001973251-26-000040
31 reports for ALAB
Performance horizon
45% Hit rate @ T+1 5 of 11 directional calls Went positive at some point 7 of 11 best @ T+20▲ +69.95%May 5, 2026
Filters
Rows
Reports for ALAB, sortable and filterable
TypeNow
Oct 23, 2026
4d ago
Institutional Cluster
BULLISH ★ 4/10
$257.16 $259.51▲ +0.91%▲ +0.20%$293.99 (+14.32%)
Oct 7, 2026
20d ago
144
NEUTRAL ★ 2/10
$347.05 $342.21▼ −1.39%▼ −1.99%$293.99 (−15.29%)
Oct 7, 2026
20d ago
SC 13G/A
NEUTRAL ★ 3/10
$382.25 $347.05▼ −9.21%▼ −8.79%$293.99 (−23.09%)
Sep 2, 2026
7w ago
144
BEARISH ★ 6/10
$274.13 $282.82▼ −3.17%▼ −2.12%$293.99 (−7.24%)
Sep 1, 2026
8w ago
144
NEUTRAL ★ 4/10
$274.13 $282.82▲ +3.17%▲ +2.12%$293.99 (+7.24%)
Aug 19, 2026
9w ago
Insider Cluster
NEUTRAL ★ 2/10
$290.52 $284.97▼ −1.91%▼ −2.32%$293.99 (+1.19%)
Aug 4, 2026
12w ago
8-K
BULLISH ★ 8/10
$318.43 $331.50▲ +4.10%▲ +4.26%$293.99 (−7.68%)
Jul 23, 2026
13w ago
Institutional Cluster
MIXED ★ 5/10
$326.97 $291.58▼ −10.82%▼ −10.93%$293.99 (−10.09%)
Jul 6, 2026
16w ago
Insider Cluster
NEUTRAL ★ 2/10
$382.89 $393.16▲ +2.68%▲ +2.99%$293.99 (−23.22%)
Jul 2, 2026
16w ago
Insider Cluster
NEUTRAL ★ 2/10
$406.42 $432.74▲ +6.48%▲ +5.60%$293.99 (−27.66%)
Showing 10 of 31

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Report published Oct 7, 2026