Astera Labs director sells 12,499 shares in plan trade
Astera Labs, Inc. director Stefan A. Dyckerhoff reported sales of 12,499 shares of common stock on 2026-08-06.
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Form Type
4
Rhea-AI Filing Summary
Astera Labs, Inc. director Stefan A. Dyckerhoff reported sales of 12,499 shares of common stock on 2026-08-06. The shares were sold in multiple open-market transactions at weighted average prices around $309–$313 per share, pursuant to a Rule 10b5-1 trading plan adopted on December 1, 2025. Some shares were held directly, while others were held through trusts and a limited partnership for which he serves as trustee or through related roles, and he disclaims beneficial ownership beyond his pecuniary interest.
Insider Trade Summary 10b5-1
Net Seller: 12,499 shares
Net Sell
14 txns
Insider
Dyckerhoff Stefan A
Role
Director
Sold
12,499 shs ($3.90M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock F1, F2, F3 | 1,029 | $309.289 | $318K |
| Sale | Common Stock F1, F2, F4 | 2,447 | $309.289 | $757K |
| Sale | Common Stock F1, F2, F5 | 194 | $309.289 | $60K |
| Sale | Common Stock F1, F6, F3 | 269 | $311.372 | $84K |
| Sale | Common Stock F1, F6, F4 | 640 | $311.372 | $199K |
| Sale | Common Stock F1, F6, F5 | 51 | $311.372 | $16K |
| Sale | Common Stock F1, F7, F3 | 2,207 | $313.074 | $691K |
| Sale | Common Stock F1, F7, F4 | 5,246 | $313.074 | $1.64M |
| Sale | Common Stock F1, F7, F5 | 416 | $313.074 | $130K |
| holding | Common Stock F8 | -- | -- | -- |
| holding | Common Stock F8 | -- | -- | -- |
| holding | Common Stock F8 | -- | -- | -- |
| holding | Common Stock F8 | -- | -- | -- |
| holding | Common Stock F8 | -- | -- | -- |
Holdings After Transaction:
Common Stock — 53,961 shares (Direct);
Common Stock — 303,066 shares (Indirect, By Trust);
Common Stock — 3,970 shares (Indirect, By Limited Partnership (TF));
Common Stock — 3,767 shares (Indirect, By DIFT-2);
Common Stock — 3,765 shares (Indirect, By DIFT-AMD);
Common Stock — 3,765 shares (Indirect, By DIFT-BAD);
Common Stock — 3,765 shares (Indirect, By DIFT-SHD);
Common Stock — 3,765 shares (Indirect, By DIFT-IND)
Footnotes (8)
- F1. Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.
- F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $308.67 to $309.34 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
- F3. Includes shares to be issued in connection with the vesting of one or more restricted stock units. The Reporting Person shares pecuniary interest in these shares with other parties pursuant to contractual relationships. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares.
- F4. Shares held by a trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.
- F5. Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.
- F6. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $311.20 to $312.02 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
- F7. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $312.41 to $313.211 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
- F8. Shares held by an irrevocable trust of which the Reporting Person is a Trustee. The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein.
Key Figures
Shares sold: 12,499 shares
Weighted average price tranche 1: $309.2890 per share
Weighted average price tranche 2: $311.3720 per share
+3 more
6 metrics
Shares sold
12,499 shares
Total common shares sold across reported transactions on 2026-08-06
Weighted average price tranche 1
$309.2890 per share
Weighted average price for certain sales on 2026-08-06 (footnote F2 range)
Weighted average price tranche 2
$311.3720 per share
Weighted average price for certain sales on 2026-08-06 (footnote F6 range)
Weighted average price tranche 3
$313.0740 per share
Weighted average price for certain sales on 2026-08-06 (footnote F7 range)
Price range footnote F2
$308.67–$309.34 per share
Range of prices for trades summarized in the $309.2890 weighted average
DIFT-2 holdings after
3,767 shares
Indirect common stock holdings by irrevocable trust DIFT-2 as of 2026-08-06
Key Terms
Rule 10b5-1 trading plan, weighted average price, pecuniary interest, irrevocable trust, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price. These shares were sold"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
pecuniary interest financial
"The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest"
irrevocable trust financial
"Shares held by an irrevocable trust of which the Reporting Person is a Trustee"
An irrevocable trust is a legal arrangement where an owner transfers assets into a separate entity managed by a trustee and gives up the power to modify or reclaim those assets. For investors it matters because putting stock or other holdings into such a trust can change who controls and benefits from the assets, affect taxes and creditor protection, and influence how easy it is to sell or value those holdings—like placing valuables in a locked safe overseen by someone else.
restricted stock units financial
"Includes shares to be issued in connection with the vesting of one or more restricted stock units"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did Astera Labs (ALAB) director Stefan Dyckerhoff report in this Form 4?
Stefan A. Dyckerhoff reported selling 12,499 shares of Astera Labs common stock on 2026-08-06. The sales occurred in multiple open-market transactions at weighted average prices between approximately $308.67 and $313.211 per share, under a pre-adopted trading plan.
Was the Astera Labs (ALAB) insider sale under a Rule 10b5-1 plan?
Yes. A footnote states the shares were sold pursuant to a Rule 10b5-1 trading plan adopted by Stefan A. Dyckerhoff on December 1, 2025. Such plans pre-schedule trades, reducing the informational value of trade timing for investors.
What indirect ownership structures are involved in this Astera Labs (ALAB) Form 4?
Indirect holdings include shares by trust, by limited partnership (TF), and several irrevocable trusts labeled DIFT-2, DIFT-AMD, DIFT-BAD, DIFT-SHD, and DIFT-IND. Dyckerhoff disclaims beneficial ownership in these except for his pecuniary interest.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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