Key facts
- This page summarizes Stefan A. Dyckerhoff's Form 4 filing for Astera Labs, Inc. (ALAB).
- 12 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 03 Sep 2026, 19:07.
Stefan A. Dyckerhoff - 02 Sep 2026 Form 4 Insider Report for Astera Labs, Inc. (ALAB)
- Reporting relationship
- Director
- Issuer ticker
- ALAB
- Reported as of
- 02 Sep 2026
- Net transaction value
- -$3,436,753
- SEC form
- 4
- Accepted by SEC
- 03 Sep 2026, 19:07:44 UTC
- Prior SEC filing
- 10 Aug 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Kanwalpreet S. Kalra, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Stefan A. Dyckerhoff filed Form 4 for Astera Labs, Inc. (ALAB) on 03 Sep 2026.
Change
- Previous filing in this sequence was filed on 10 Aug 2026.
- Current net transaction value: -$3,436,753.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001484394
Primary reporting owner
Dyckerhoff Stefan A
- Relationship
- Director
- Address
- 755 PAGE MILL ROAD, SUITE A-200, PALO ALTO
- Signature
- /s/ Kanwalpreet S. Kalra, Attorney-in-Fact
- Signature date
- 03 Sep 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
ALAB
transaction
Common Stock
Sale
- Transaction value
- $74,705
- Shares
- -273
- Change %
- -0.51%
- Price
- $273.64
- Shares after
- 53,688
- Date
- 02 Sep 2026
- Ownership
- Direct
- Footnotes
- F1, F2, F3
ALAB
transaction
Common Stock
Sale
- Transaction value
- $177,868
- Shares
- -650
- Change %
- -0.21%
- Price
- $273.64
- Shares after
- 302,416
- Date
- 02 Sep 2026
- Ownership
- By Trust
- Footnotes
- F1, F2, F4
ALAB
transaction
Common Stock
Sale
- Transaction value
- $14,229
- Shares
- -52
- Change %
- -1.3%
- Price
- $273.64
- Shares after
- 3,918
- Date
- 02 Sep 2026
- Ownership
- By Limited Partnership (TF)
- Footnotes
- F1, F2, F5
ALAB
transaction
Common Stock
Sale
- Transaction value
- $625,145
- Shares
- -2,275
- Change %
- -4.2%
- Price
- $274.79
- Shares after
- 51,413
- Date
- 02 Sep 2026
- Ownership
- Direct
- Footnotes
- F1, F3, F6
ALAB
transaction
Common Stock
Sale
- Transaction value
- $1,486,334
- Shares
- -5,409
- Change %
- -1.8%
- Price
- $274.79
- Shares after
- 297,007
- Date
- 02 Sep 2026
- Ownership
- By Trust
- Footnotes
- F1, F4, F6
ALAB
transaction
Common Stock
Sale
- Transaction value
- $117,884
- Shares
- -429
- Change %
- -11%
- Price
- $274.79
- Shares after
- 3,489
- Date
- 02 Sep 2026
- Ownership
- By Limited Partnership (TF)
- Footnotes
- F1, F5, F6
ALAB
transaction
Common Stock
Sale
- Transaction value
- $216,293
- Shares
- -785
- Change %
- -1.5%
- Price
- $275.53
- Shares after
- 50,628
- Date
- 02 Sep 2026
- Ownership
- Direct
- Footnotes
- F1, F3, F7
ALAB
transaction
Common Stock
Sale
- Transaction value
- $514,420
- Shares
- -1,867
- Change %
- -0.63%
- Price
- $275.53
- Shares after
- 295,140
- Date
- 02 Sep 2026
- Ownership
- By Trust
- Footnotes
- F1, F4, F7
ALAB
transaction
Common Stock
Sale
- Transaction value
- $40,779
- Shares
- -148
- Change %
- -4.2%
- Price
- $275.53
- Shares after
- 3,341
- Date
- 02 Sep 2026
- Ownership
- By Limited Partnership (TF)
- Footnotes
- F1, F5, F7
ALAB
transaction
Common Stock
Sale
- Transaction value
- $47,601
- Shares
- -172
- Change %
- -0.34%
- Price
- $276.75
- Shares after
- 50,456
- Date
- 02 Sep 2026
- Ownership
- Direct
- Footnotes
- F1, F8
ALAB
transaction
Common Stock
Sale
- Transaction value
- $112,638
- Shares
- -407
- Change %
- -0.14%
- Price
- $276.75
- Shares after
- 294,733
- Date
- 02 Sep 2026
- Ownership
- By Trust
- Footnotes
- F1, F4, F8
ALAB
transaction
Common Stock
Sale
- Transaction value
- $8,856
- Shares
- -32
- Change %
- -0.96%
- Price
- $276.75
- Shares after
- 3,309
- Date
- 02 Sep 2026
- Ownership
- By Limited Partnership (TF)
- Footnotes
- F1, F5, F8
ALAB
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 3,767
- Date
- 02 Sep 2026
- Ownership
- By DIFT-2
- Footnotes
- F9
ALAB
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 3,765
- Date
- 02 Sep 2026
- Ownership
- By DIFT-AMD
- Footnotes
- F9
ALAB
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 3,765
- Date
- 02 Sep 2026
- Ownership
- By DIFT-BAD
- Footnotes
- F9
ALAB
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 3,765
- Date
- 02 Sep 2026
- Ownership
- By DIFT-SHD
- Footnotes
- F9
ALAB
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 3,765
- Date
- 02 Sep 2026
- Ownership
- By DIFT-IND
- Footnotes
- F9
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 9 footnotes
Footnote F1
Shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 1, 2025.
Footnote F2
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $273.27 to $274.04 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.
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.
Footnote 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.
Footnote 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.
Footnote F6
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $274.07 to $275.05 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.
Footnote F7
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $275.15 to $276.05 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.
Footnote F8
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $276.29 to $277.12 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.
Footnote F9
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.