Astera Labs (ALAB) director’s entities sell 12,499 shares under Rule 10b5-1 plan
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
Astera Labs, Inc. director Stefan A. Dyckerhoff reported planned stock sales through various entities. On 2026-07-01, entities associated with him sold a total of 12,499 shares of Astera Labs common stock at $450.00 per share in open-market transactions under a pre-arranged Rule 10b5-1 trading plan.
The sales included 3,505 shares from his direct holdings, 8,333 shares held by a trust, and 661 shares held by a limited partnership. After these transactions, reported positions include 57,466 shares held directly, 311,399 shares held by a trust, 4,631 shares held by a limited partnership, and several smaller indirect holdings, with Dyckerhoff disclaiming beneficial ownership except for his pecuniary interests.
Positive
- None.
Negative
- None.
Insights
Planned sales by entities linked to an Astera Labs director look routine and partial.
The filing shows entities associated with director Stefan A. Dyckerhoff sold 12,499 shares of Astera Labs, Inc. common stock at $450.00 per share. These are open-market sales coded “S” and were executed pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on December 1, 2025, indicating they were scheduled in advance.
Post-transaction, Dyckerhoff still reports substantial holdings: 57,466 shares directly and 311,399 shares through a trust, plus additional indirect positions. Footnotes state many of these are held via trusts and a limited partnership, with Dyckerhoff disclaiming beneficial ownership beyond his pecuniary interest. Taken together, the activity appears as a planned, partial reduction rather than a full exit, and derivative positions are not shown, suggesting no options were exercised in this filing.
Insider Trade Summary 10b5-1
Net Seller: 12,499 shares ($5,624,550)
Net Sell
8 txns
Insider
Dyckerhoff Stefan A
Role
null
Sold
12,499 shs ($5.62M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock | 3,505 | $450.00 | $1.58M |
| Sale | Common Stock | 8,333 | $450.00 | $3.75M |
| Sale | Common Stock | 661 | $450.00 | $297K |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Common Stock — 57,466 shares (Direct, null);
Common Stock — 311,399 shares (Indirect, By Trust)
Footnotes (1)
- Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025. 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. 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. 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. 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: 12,499 shares
Sale price: $450.00 per share
Direct sale volume: 3,505 shares
+5 more
8 metrics
Total shares sold
12,499 shares
Open-market sales on July 1, 2026
Sale price
$450.00 per share
Price for all reported sales
Direct sale volume
3,505 shares
Direct holdings sold, Common Stock
Trust sale volume
8,333 shares
Common Stock held by trust sold
Limited partnership sale volume
661 shares
Common Stock held by limited partnership sold
Direct holdings after sale
57,466 shares
Common Stock held directly post-transaction
Trust holdings after sale
311,399 shares
Common Stock held by trust post-transaction
Limited partnership holdings after sale
4,631 shares
Common Stock held by limited partnership post-transaction
Key Terms
Rule 10b5-1 trading plan, restricted stock units, pecuniary interest, limited partnership, +2 more
6 terms
Rule 10b5-1 trading plan regulatory
"Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025."
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.
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.
pecuniary interest financial
"The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest in these shares."
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.
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.
beneficial ownership financial
"The Reporting Person disclaims beneficial ownership in these shares except as to the Reporting Person's pecuniary interest therein."
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.
FAQ
What insider transactions did Astera Labs (ALAB) report for Stefan Dyckerhoff?
Astera Labs reported that entities linked to director Stefan Dyckerhoff sold 12,499 shares of common stock on July 1, 2026. These sales were open-market transactions executed at $450.00 per share under a pre-arranged Rule 10b5-1 trading plan.
Were the Astera Labs (ALAB) insider sales by Stefan Dyckerhoff pre-planned under Rule 10b5-1?
Yes. The filing states the shares were sold under a Rule 10b5-1 trading plan adopted on December 1, 2025. Such plans allow insiders to schedule trades in advance, helping separate normal portfolio management from short-term market timing concerns.
What prices and volumes were involved in Stefan Dyckerhoff’s Astera Labs (ALAB) stock sales?
The filing shows total sales of 12,499 Astera Labs common shares at $450.00 per share. This includes 3,505 shares from direct holdings, 8,333 shares from a trust, and 661 shares from a limited partnership, all coded as open-market sales.
How are trusts and partnerships involved in Stefan Dyckerhoff’s Astera Labs (ALAB) holdings?
Many shares are held through trusts and a limited partnership where Stefan Dyckerhoff serves in trustee or related roles. The filing notes he disclaims beneficial ownership of these shares except for his pecuniary interest, clarifying that legal ownership resides with those entities.
Did the Astera Labs (ALAB) Form 4 include any option exercises or derivative transactions?
No derivative transactions are listed in the filing’s derivative summary. The reported activity consists solely of common stock entries, with three open-market sale transactions and several holding entries, indicating no option exercises or other derivative conversions in this report.