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Astera Labs director Dyckerhoff sells 12,499 shares

The reported sales were made under a Rule 10b5-1 trading plan adopted December 1, 2025.

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Form Type
4

Rhea-AI Filing Summary

Astera Labs, Inc. (ALAB) director Stefan A. Dyckerhoff reported selling 12,499 shares on November 5, 2026, at $211.41 per share: 3,505 held directly, 8,333 by a trust of which he is trustee, and 661 by a limited partnership. The sales were under a Rule 10b5-1 trading plan adopted December 1, 2025. Reported post-sale holdings were 43,514 directly, 278,067 in the trust, and 1,987 in the partnership. He disclaims beneficial ownership of entity-held shares except for his pecuniary interest.

Insider Dyckerhoff Stefan A
Role Director
Sold 12,499 shs ($2.64M)
Type Security Shares Price Value
Sale Common Stock F1, F2 3,505 $211.41 $741K
Sale Common Stock F1, F3 8,333 $211.41 $1.76M
Sale Common Stock F1, F4 661 $211.41 $140K
Holding Common Stock F5 -- -- --
Holding Common Stock F5 -- -- --
Holding Common Stock F5 -- -- --
Holding Common Stock F5 -- -- --
Holding Common Stock F5 -- -- --
Holdings After Transaction: Common Stock — 43,514 shares (Direct); Common Stock — 278,067 shares (Indirect, By Trust); Common Stock — 1,987 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 (5)
  1. F1. Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.
  2. F2. 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.
  3. 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.
  4. 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.
  5. F5. 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.
Direct shares sold 3,505 shares November 5, 2026
Trust shares sold 8,333 shares Held by a trust of which Stefan A. Dyckerhoff is trustee; November 5, 2026
Limited partnership shares sold 661 shares November 5, 2026
Sale price per share $211.41 per share November 5, 2026 transactions
Direct shares after sale 43,514 shares Reported following the November 5, 2026 transaction
Trust shares after sale 278,067 shares Reported following the November 5, 2026 transaction
Limited partnership shares after sale 1,987 shares Reported following the November 5, 2026 transaction
Rule 10b5-1 trading plan regulatory
"Shares were sold pursuant to a Rule 10b5-1 trading plan"
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
"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
"shares pecuniary interest in these shares with other parties"
beneficial ownership financial
"disclaims beneficial ownership in these shares"
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

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ALAB shares did Stefan A. Dyckerhoff report selling?

Stefan A. Dyckerhoff reported sales of 12,499 Astera Labs common shares on November 5, 2026, at $211.41 per share: 3,505 held directly, 8,333 held by a trust of which he is trustee, and 661 held by a limited partnership. The sales were under a Rule 10b5-1 trading plan adopted December 1, 2025.

What were Stefan A. Dyckerhoff's ALAB holdings after the reported sales?

Reported post-sale positions were 43,514 shares held directly, 278,067 by a trust, and 1,987 by a limited partnership. Additional positions listed were 3,767 shares by DIFT-2 and 3,765 shares each by DIFT-AMD, DIFT-BAD, DIFT-SHD, and DIFT-IND; those shares were held by irrevocable trusts of which Dyckerhoff was a trustee.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Dyckerhoff Stefan A

(Last)(First)(Middle)
755 PAGE MILL ROAD, SUITE A-200

(Street)
PALO ALTO CALIFORNIA 94304-1005

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Astera Labs, Inc. [ ALAB ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
11/05/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock11/05/2026S(1)3,505D$211.4143,514D(2)
Common Stock11/05/2026S(1)8,333D$211.41278,067IBy Trust(3)
Common Stock11/05/2026S(1)661D$211.411,987IBy Limited Partnership (TF)(4)
Common Stock3,767IBy DIFT-2(5)
Common Stock3,765IBy DIFT-AMD(5)
Common Stock3,765IBy DIFT-BAD(5)
Common Stock3,765IBy DIFT-SHD(5)
Common Stock3,765IBy DIFT-IND(5)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.
2. 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.
3. 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.
4. 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.
5. 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.
/s/ Kanwalpreet S. Kalra, Attorney-in-Fact11/09/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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