While the raw dollar amount is small relative to market cap, the combination of a board-level insider filing intent to sell, concurrent $16.4M insider selling over the past 30 days, and the stock's historical pattern of negative returns following non-bullish filings suggests elevated distribution risk. Monitor for additional 144 filings from other insiders or a potential lock-up expiration that could signal broader supply overhang.
Price Chart
Executive Summary
Director Stefan A. Dyckerhoff filed a Form 144 to sell 12,499 shares of Astera Labs common stock, with an aggregate estimated market value of approximately $3.44 million based on a $275.00 share price and current market cap of $48.6B. The shares were acquired via pro-rata distribution from Sutter Hill Ventures and prior private placements dating back to 2019-2024. This is a modest disposition relative to the company's market cap and the insider's disclosed holdings, but the filing comes amid a 30-day insider selling pattern of $16.4M across 10 transactions and follows historically poor T+20 performance on neutral-score ALAB filings (25% win rate).
Key Facts
- Director Stefan A. Dyckerhoff filed a Form 144 to sell 12,499 shares of common stock.
- Estimated aggregate market value of the proposed sale is approximately $3,436,755 based on $275.00 per share.
- Shares to be sold were acquired via pro-rata distribution from Sutter Hill Ventures (8,333 shares) and private placements at Astera Labs in 2019, 2020, and 2022.
- The selling plan covers shares held across multiple accounts: 8,333 from a trust where Dyckerhoff is trustee, 3,505 from an IRA, and 661 from a limited partnership where his trust is the general partner.
- Recent insider activity on ALAB shows 10 sells totaling $16.4M over the past 30 days.
- Astera Labs has a market cap of $48.6B; the proposed sale represents less than 0.01% of shares outstanding.
- The 12,499-share planned sale represents roughly 24% of the shares previously sold by Dyckerhoff in July 2026 (also 12,499) and August 2026 (12,499).
- Historical calibration shows ALAB filing reports with neutral-to-low scores have posted negative average T+20 returns (-13.94% mean, 25% win rate).
Financial Impact
Proposed sale of ~12,499 shares at ~$275/share = ~$3.44M; represents approximately 0.007% of the company's $48.6B market cap.
Risk Factors
- Insider selling may signal board-level concerns about valuation or near-term fundamentals despite analyst consensus being 69% bullish.
- The stock has historically underperformed following routine or neutral filings (25% win rate at T+20); further selling could exacerbate negative drift.
- If other directors or officers file similar 144s in the coming days, the signal would amplify and likely pressure the stock.
- No cross-filing context (e.g., earnings, material agreements) was provided to explain the timing of this sale.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 6 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 144 Filing (ALAB) — Batch item 1 | 0001973251-26-000033 |
| Document: 0001973251-26-000033-index.html | 0001973251-26-000033 |
| Document: 0001973251-26-000033.txt | 0001973251-26-000033 |
| 144 Filing (ALAB) — Batch item 4 | 0001973251-26-000033 |
| Document: 0001973251-26-000033-index.html | 0001973251-26-000033 |
| Document: 0001973251-26-000033.txt | 0001973251-26-000033 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 2, 2026 6w ago | 144 | $274.13 $355.97 | ▼ −29.85% | ▼ −30.19% | $285.82 (−4.26%) |
Sep 1, 2026 6w ago | 144 | $274.13 $355.97 | ▲ +29.85% | ▲ +30.19% | $285.82 (+4.26%) |
Aug 19, 2026 8w ago | Insider Cluster | $289.02 $293.56 | ▲ +1.57% | ▲ +2.41% | $285.82 (−1.11%) |
Aug 4, 2026 10w ago | 8-K | $318.43 $274.13 | ▼ −13.91% | ▼ −13.31% | $285.82 (−10.24%) |
Jul 23, 2026 12w ago | Institutional Cluster | $326.97 $290.52 | ▼ −11.15% | ▼ −14.46% | $285.82 (−12.59%) |
Jul 7, 2026 14w ago | Insider Cluster | $382.89 $321.05 | ▼ −16.15% | ▼ −17.48% | $285.82 (−25.35%) |
Jul 2, 2026 15w ago | Insider Cluster | $406.42 $299.69 | ▼ −26.26% | ▼ −25.85% | $285.82 (−29.67%) |
Jul 1, 2026 15w ago | 144 | $430.86 $249.74 | ▼ −42.04% | ▼ −39.85% | $285.82 (−33.66%) |
Jun 24, 2026 16w ago | 144 | $398.00 $326.97 | ▼ −17.85% | ▼ −18.38% | $285.82 (−28.19%) |
Jun 11, 2026 18w ago | Institutional Cluster | $367.15 $412.97 | ▲ +12.48% | ▲ +10.70% | $285.82 (−22.15%) |
US Market Status
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