Astera Labs (ALAB) director logs 24,998-share Rule 10b5-1 stock sale
Rhea-AI Filing Summary
Astera Labs, Inc. director Stefan A. Dyckerhoff reported open-market sales of Astera Labs common stock totaling 24,998 shares. The transactions on April 17 and April 20, 2026 were executed at weighted average prices around $175.00–$175.51 per share.
Entities associated with Dyckerhoff, including a trust and a limited partnership, sold shares, and he also sold shares held directly. Footnotes state the shares held by these entities are in trusts and a partnership where he disclaims beneficial ownership except for his pecuniary interest.
The filing notes that the sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on December 1, 2025, indicating the trades were scheduled in advance rather than timed discretionarily.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Net Seller: 24,998 shares
Net Sell
11 txns
Insider
Dyckerhoff Stefan A
Role
Director
Sold
24,998 shs ($4.38M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock | 3,757 | $175.12 | $658K |
| Sale | Common Stock | 8,933 | $175.12 | $1.56M |
| Sale | Common Stock | 709 | $175.12 | $124K |
| Sale | Common Stock | 3,253 | $175.00 | $569K |
| Sale | Common Stock | 7,733 | $175.00 | $1.35M |
| Sale | Common Stock | 613 | $175.00 | $107K |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Common Stock — 67,144 shares (Direct);
Common Stock — 336,398 shares (Indirect, By Trust);
Common Stock — 6,614 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 (6)
- 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 $175.00 to $175.01 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. 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.
- F4. 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.
- F5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $175.02 to $175.51 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.
- F6. 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
Total shares sold: 24,998 shares
April 17 sales: 11,599 shares
April 20 sales: 13,399 shares
+5 more
8 metrics
Total shares sold
24,998 shares
Net open-market sales reported in this Form 4
April 17 sales
11,599 shares
Open-market sales on April 17, 2026
April 20 sales
13,399 shares
Open-market sales on April 20, 2026
Weighted average price 4/17
$175.00 per share
Price range $175.00 to $175.01 on April 17, 2026
Weighted average price 4/20
$175.12 per share
Price range $175.02 to $175.51 on April 20, 2026
Direct shares after 4/20 sale
67,144 shares
Direct common stock holdings following April 20, 2026 transaction
Trust shares after 4/20 sale
336,398 shares
Common stock held by trust associated with reporting person
Limited partnership shares after 4/20 sale
6,614 shares
Common stock held by limited partnership associated with reporting person
Key Terms
Rule 10b5-1 trading plan, weighted average price, beneficial ownership, irrevocable trust, +1 more
5 terms
Rule 10b5-1 trading plan financial
"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 in multiple transactions"
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.
beneficial ownership financial
"The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
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.
limited partnership financial
"Shares held by a limited partnership of which the Reporting Person is a trustee of a trust which is the general partner"
A limited partnership is a legal business structure with two types of partners: at least one general partner who runs the business and bears full legal responsibility, and one or more limited partners who contribute money, share profits, and have liability capped at their investment. For investors, it matters because it separates control from financial exposure — like putting money into a store without managing it — and affects how returns, risks, taxes and transferability of ownership are handled.
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What did Astera Labs (ALAB) director Stefan Dyckerhoff report in this Form 4?
He reported open-market sales totaling 24,998 shares of Astera Labs common stock. The transactions occurred on April 17 and April 20, 2026 at weighted average prices around $175 per share, involving both direct holdings and shares held through related entities.
How much stock did Astera Labs (ALAB) entities associated with Stefan Dyckerhoff sell on April 17, 2026?
On April 17, 2026, reported open-market sales totaled 11,599 shares of common stock. These included 3,253 shares from direct holdings, 7,733 shares from a trust, and 613 shares from a limited partnership, all at a weighted average price of $175.00.
What additional Astera Labs (ALAB) sales did Stefan Dyckerhoff report for April 20, 2026?
On April 20, 2026, the filing shows open-market sales of 13,399 shares. These included 3,757 direct shares, 8,933 shares sold by a trust, and 709 shares sold by a limited partnership, at a weighted average price of about $175.12 per share.