Key facts
- This page summarizes Manuel Alba's Form 4 filing for Astera Labs, Inc. (ALAB).
- 24 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 03 Sep 2026, 16:30.
Manuel Alba - 01 Sep 2026 Form 4 Insider Report for Astera Labs, Inc. (ALAB)
- Reporting relationship
- Director
- Issuer ticker
- ALAB
- Reported as of
- 01 Sep 2026
- Net transaction value
- -$51,263,695
- SEC form
- 4
- Accepted by SEC
- 03 Sep 2026, 16:30:46 UTC
- Prior SEC filing
- 06 Jul 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Philip Mazzara, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Manuel Alba filed Form 4 for Astera Labs, Inc. (ALAB) on 03 Sep 2026.
Change
- Previous filing in this sequence was filed on 06 Jul 2026.
- Current net transaction value: -$51,263,695.
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 0001134727
Primary reporting owner
ALBA MANUEL
- Relationship
- Director
- Address
- C/O ASTERA LABS, INC., 2345 NORTH FIRST STREET, SAN JOSE
- Signature
- /s/ Philip Mazzara, 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
- $714,100
- Shares
- -2,575
- Change %
- -0.2%
- Price
- $277.32
- Shares after
- 1,271,923
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F2, F3
ALAB
transaction
Common Stock
Sale
- Transaction value
- $5,842,387
- Shares
- -20,991
- Change %
- -1.7%
- Price
- $278.33
- Shares after
- 1,250,932
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F4
ALAB
transaction
Common Stock
Sale
- Transaction value
- $10,382,521
- Shares
- -37,176
- Change %
- -3%
- Price
- $279.28
- Shares after
- 1,213,756
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F5
ALAB
transaction
Common Stock
Sale
- Transaction value
- $16,628,388
- Shares
- -59,379
- Change %
- -4.9%
- Price
- $280.04
- Shares after
- 1,154,377
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F6
ALAB
transaction
Common Stock
Sale
- Transaction value
- $3,621,877
- Shares
- -12,882
- Change %
- -1.1%
- Price
- $281.16
- Shares after
- 1,141,495
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F7
ALAB
transaction
Common Stock
Sale
- Transaction value
- $1,656,093
- Shares
- -5,870
- Change %
- -0.51%
- Price
- $282.13
- Shares after
- 1,135,625
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F8
ALAB
transaction
Common Stock
Sale
- Transaction value
- $1,119,713
- Shares
- -3,954
- Change %
- -0.35%
- Price
- $283.18
- Shares after
- 1,131,671
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F9
ALAB
transaction
Common Stock
Sale
- Transaction value
- $637,973
- Shares
- -2,245
- Change %
- -0.2%
- Price
- $284.17
- Shares after
- 1,129,426
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F10
ALAB
transaction
Common Stock
Sale
- Transaction value
- $96,960
- Shares
- -340
- Change %
- -0.03%
- Price
- $285.18
- Shares after
- 1,129,086
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F11
ALAB
transaction
Common Stock
Sale
- Transaction value
- $768,284
- Shares
- -2,677
- Change %
- -0.24%
- Price
- $286.99
- Shares after
- 1,126,409
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F12
ALAB
transaction
Common Stock
Sale
- Transaction value
- $293,405
- Shares
- -1,019
- Change %
- -0.09%
- Price
- $287.93
- Shares after
- 1,125,390
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F13
ALAB
transaction
Common Stock
Sale
- Transaction value
- $257,747
- Shares
- -892
- Change %
- -0.08%
- Price
- $288.95
- Shares after
- 1,124,498
- Date
- 01 Sep 2026
- Ownership
- By Alba Trust
- Footnotes
- F1, F3, F14
ALAB
transaction
Common Stock
Sale
- Transaction value
- $157,517
- Shares
- -568
- Change %
- -0.2%
- Price
- $277.32
- Shares after
- 286,295
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F2, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $1,285,320
- Shares
- -4,618
- Change %
- -1.6%
- Price
- $278.33
- Shares after
- 281,677
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F4, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $2,284,234
- Shares
- -8,179
- Change %
- -2.9%
- Price
- $279.28
- Shares after
- 273,498
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F5, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $3,660,101
- Shares
- -13,070
- Change %
- -4.8%
- Price
- $280.04
- Shares after
- 260,428
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F6, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $797,083
- Shares
- -2,835
- Change %
- -1.1%
- Price
- $281.16
- Shares after
- 257,593
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F7, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $363,381
- Shares
- -1,288
- Change %
- -0.5%
- Price
- $282.13
- Shares after
- 256,305
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F8, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $245,804
- Shares
- -868
- Change %
- -0.34%
- Price
- $283.18
- Shares after
- 255,437
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F9, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $139,530
- Shares
- -491
- Change %
- -0.19%
- Price
- $284.18
- Shares after
- 254,946
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F10, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $21,103
- Shares
- -74
- Change %
- -0.03%
- Price
- $285.18
- Shares after
- 254,872
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F11, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $168,754
- Shares
- -588
- Change %
- -0.23%
- Price
- $287.00
- Shares after
- 254,284
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F12, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $64,785
- Shares
- -225
- Change %
- -0.09%
- Price
- $287.93
- Shares after
- 254,059
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F13, F15
ALAB
transaction
Common Stock
Sale
- Transaction value
- $56,635
- Shares
- -196
- Change %
- -0.08%
- Price
- $288.95
- Shares after
- 253,863
- Date
- 01 Sep 2026
- Ownership
- By Casa Alameda 2007, LLC
- Footnotes
- F1, F14, F15
ALAB
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 5,000
- Date
- 01 Sep 2026
- Ownership
- By spouse
ALAB
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,351
- Date
- 01 Sep 2026
- Ownership
- Direct
* 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 15 footnotes
Footnote F1
The sales reported in this Form 4 occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 22, 2026.
Footnote F2
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $276.7200 to $277.7100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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
These shares are owned directly by Manuel Alba-Marquez in trust for Alba 2003 Living Trust (the "Alba Trust"), of which the Reporting Person and his spouse are co-trustees. The Reporting Person disclaims beneficial ownership of these securities, except to the extent, if any, of his pecuniary interest therein, and the filing of this Form 4 is not an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.
Footnote F4
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $277.7200 to $278.7100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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 F5
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $278.7200 to $279.7100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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 F6
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $279.7200 to $280.7100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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. The shares were sold in multiple transactions at prices ranging from $280.7200 to $281.7100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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. The shares were sold in multiple transactions at prices ranging from $281.7200 to $282.7000, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $282.7200 to $283.7000, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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 F10
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $283.7200 to $284.7100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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 F11
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $284.7600 to $285.5900, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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 F12
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $286.3600 to $287.3500, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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 F13
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $287.6400 to $288.4100, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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 F14
The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $288.9400 to $288.9900, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. 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 F15
These shares are owned directly by Casa Alameda 2007, LLC, of which the Reporting Person is a manager. The Reporting Person disclaims beneficial ownership of these securities, except to the extent, if any, of his pecuniary interest therein, and the filing of this Form 4 is not an admission that the Reporting Person is the beneficial owner of these securities for purposes of Section 16 or for any other purpose.